AIR MATTRESS WITH FILLER CHECK VALVE AND CAP THEREFOR

MATELAS PNEUMATIQUE A CLAPET ANTIRETOUR ET BOUCHON SUR TUBE DE GONFLEMENT

English Abstract

ABSTRACT OF DISCLOSURE
An air mattress has a filler check valve connected to
an air blower to supply air to the mattress chamber. A holder
secured to the air mattress locates the filler check valve in a
recessed position relative to an outer wall of the mattress.
The filler check valve has a sleeve mounted on the holder and a
rod attached to a valve head carrying an annular sealing
member. A spring biases the valve head to a closed position
wherein annular sealing member engages a beveled face on the
inner end of the sleeve. The outer end of the sleeve has a
cylindrical collar with internal and external threads. The
internal threads of the collar engage external threads of the
holder to secure the sleeve on the holder. A cap has an
annular flange with internal threads of the collar to close an
air passage in the sleeve. Seals located between the collar
and sleeve and between the cap and the sleeve inhibit leakage
of air from the chamber of the air mattress.

Claims

The embodiments of the invention in which an exclusive
property or privilege is claimed are defined as follows:
1. An air mattress comprising: air impervious wall
means surrounding a chamber for accommodating air under
pressure, filler check valve assembly for use in selectively
supplying air under pressure to said chamber and venting air
from said chamber, holder means mounting said filler check
valve assembly on said wall means, said holder means having a
tubular body and an annular flexible wall joined to the body to
locate the check valve assembly in said chamber, and means
securing said annular flexible wall to said wall means, said
tubular body having a smooth inside cylindrical surface, said
valve assembly having a sleeve with an inside tubular surface
surrounding an air passage open to said chamber and externally
of the air mattress mounted on the tubular body, said sleeve
having a smooth outside cylindrical surface located in a tight
fit relation with the inside cylindrical surface of the tubular
body, valving means movably mounted on the sleeve operable to
open and close the air passage, said valving means including
head means located in said chamber engageable with the sleeve
to close said passage, a rod secured to said head means
projected axially into said passage, a tubular guide joined to
said sleeve slidably accommodating said rod, a spider head
secured to the rod having outer end portions slidably
engageable with the inside tubular surface of the sleeve,
biasing means engageable with said tubular guide and spider
head for holding the head means in a closed position, said
valving means being movable against the force of the biasing
means to open said air passage thereby allowing air to flow out
of the chamber, and a cap means mounted on the sleeve for
closing air passage in said sleeve.
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2. The mattress of Claim 1 wherein: said sleeve has
an inner end having an annular face, said head means being
engageable with said annular face to close said air passage in
said sleeve.
3. The mattress of Claim 2 wherein: said annular face
has an inside annular beveled face.
4. The mattress of Claim 1 wherein: said tubular body
has an annular outer end, said sleeve having an outwardly
directed annular flange located adjacent said annular outer
end, and annular seal means located between said outer end of
the body and flange.
5. The mattress of Claim 1 wherein: said tubular body
has external threads thereon, said sleeve having a cylindrical
collar with internal threads adapted to cooperate with the
external threads to mount the sleeve on the body in a tight fit
relation with the inside surface of the body.
6. The mattress of Claim 1 wherein: said tubular
guide has a hole, said rod being slidably positioned through
said hole.
7. The mattress of Claim 1 wherein: said tubular body
has an outer end and external threads thereon, said cap means
having an annular flange with internal threads thereon, said
sleeve having an outer end and a collar secured to said outer
end of the sleeve, said collar having internal threads
cooperating with said external threads on the body to hold the
sleeve on the tubular body, said collar having external threads
cooperating with said internal threads of the flange to hold
the cap means on the sleeve, whereby the cap means closes the
air passage in said sleeve.
8. The mattress of Claim 7 including: seal means
located between said outer end of the sleeve and collar whereby
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when said collar is threaded on said tubular body the seal
means prevents escape of air from the chamber of the air
mattress.
9. The mattress of Claim 7 wherein: said sleeve has
an inner end having an annular face, said head means being
engageable with said annular face to close said valve assembly.
10. The mattress of Claim 9 wherein: said annular
face has an inside annular beveled face.
11. An air mattress and filler check valve assembly
for selectively allowing air to be introduced into and vented
from the air mattress comprising: air impervious top and bottom
walls and side walls secured to the top and bottom walls
surrounding a chamber for accommodating air under pressure,
one-way valve means useable to supply air under pressure to
said chamber and vent air from said chamber, holder means
mounted said valve means on one of said walls, said holder
means having a tubular body with a smooth cylindrical inside
surface open to the chamber and externally of the air mattress,
said valve means having a sleeve with a smooth cylindrical
outside surface located in tight fit relation with the inside
cylindrical surface of the tubular body, said sleeve having an
inside wall surrounding an air passage, an inner end, and an
outer end open to said air passage, said inner end having an
annular face, a tubular guide integral with the inner end of
the sleeve, an elongated rod slidably located through the
tubular guide, first head means secured to the rod slidably
engaging the inside wall of the sleeve, said first head means
having at least one opening allowing air to flow through the
air passage, second head means secured to said rod locating
said second head means adjacent the face on the inner end of
the sleeve, said first head means and guide allowing the rod to
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be linearly moved to selectively move said second head means
between open and closed positions relative to the annular face
on the sleeve, biasing means engaging the guide and first head
means to bias the second head means in a direction for holding
the second head means against the annular face of the sleeve to
close the air passage, said second head means being movable
away from the annular face of the sleeve against the force of
the biasing means to open said air passage, and cap means
mounted on the sleeve for closing the air passage in the
sleeve.
12. The assembly of Claim 11 wherein: said first head
means has a plurality of spider arms with ends, said ends of
the arms being slidably engageable with the inside wall of the
sleeve whereby said spider arms and guide controls the linear
movement of the second head means between its open and closed
positions.
13. The valve assembly of Claim 11 wherein: said
second head means comprises a disc, said disc having an annular
groove, an annular seal located in said groove, said seal
engageable with the annular face when the second head means is
in the closed position.
14. The valve assembly of Claim 13 wherein: said
annular face is an annular beveled face,
15. A filler check valve assembly and holder for use
in selectively allowing air to be introduced into and vented
from an air mattress comprising: a sleeve having a smooth
cylindrical outside surface and an inside wall surrounding an
air passage, an inner end, and an outer end open to said air
passage, said inner end having an annular face, a tubular guide
joined to the inner end of the sleeve, a rod slidably located
through said guide, first head means secured to the rod
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slidably engaging the inside wall of the sleeve, said first
head means having at least one opening allowing passage of air
through the air passage, second head means secured to said rod
locating the second head means adjacent the face on the inner
end of the sleeve, said first head means and guide allowing the
rod to be moved to selectively move said second head means
between open and closed positions relative to the annular face
on the sleeve, biasing means engaging the guide and first head
means to bias the second head means in a direction holding the
second head means in a closed position against the annular face
of the sleeve, said second head means being moved away from
said annular face to an open position against the force of the
biasing means, a tubular body having smooth cylindrical inside
surface surrounding a passage, said sleeve being located in
said passage with the outside surface of the sleeve being in
tight fit relation with the inside surface of the tubular body,
an annular wall joined to said tubular body adapted to mount
the tubular body and filler check valve assembly on an air
mattress, and a cup-shaped cap for closing the air passage in
said sleeve.
16. The structure of Claim 15 wherein: the tubular
body has external threads, said sleeve having a collar located
over said tubular body, said collar having internal threads
cooperating with the external threads on the body to mount said
sleeve on said tubular body, said cap means having an annular
flange with internal threads thereon, said collar having
external threads cooperating with said internal threads of the
flange to hold the cap means on the sleeve whereby the cap
means closes the air passage in said sleeve.
17. The structure of Claim 16 including: seal means
located between said collar and the sleeve to mount the sleeve

in sealing relation on the tubular body.
18. A filler check valve assembly and mount for
inflating and deflating an air mattress comprising: a
cylindrical sleeve having a smooth cylindrical outside surface,
an inner end, an outer end, and an inside wall surrounding an
axial air passage, tubular guide integral with the inner end of
the sleeve, radial arms securing the guide to the sleeve, an
elongated linear rod slidably located within the guide, said
rod having an inner end and an outer end, a circular head
secured to the inner end of the rod, said circular head having
an annular groove to accommodate an annular seal, an annular
face located on the inner end of the sleeve, a spider head
secured to the outer end of the rod, said spider head having
ends located in slidable contact with the inside wall of the
sleeve, the spider head and the guide allowing the rod to be
linearly moved to selectively move the circular head between
open and closed positions relative to said annular face, a coil
spring surrounding the rod and engaging the guide and the
spider head, said spring biasing the circular head in an
outward direction and holding the seal in engagement with said
face to close the passage, a tubular body having a smooth
cylindrical inside surface surrounding a passage, said sleeve
being located in said passage with the outside surface of the
sleeve being in tight fit relation with the inside surface of
the tubular body, a flexible annular wall secured to said
tubular body adapted to be attached to a side of the air
mattress 22, said annular wall having a generally cup shape
providing a recess for accommodating the tubular body and to
conceal the valve assembly, and a cup-shaped cap mounted on the
sleeve for closing the air passage in the sleeve.
19. The structure of Claim 18 wherein: said annular
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face has an inside annular beveled face.
20. The structure of Claim 18 wherein: the tubular
body has external threads, said sleeve having a collar located
over the said tubular body, said collar having internal threads
cooperating with the external threads on the body to mount said
sleeve on said tubular body, said cap means having an annular
flange with internal threads, said collar having external
threads cooperating with the internal threads on the flange to
mount said cap means on the sleeve.
21. The structure of Claim 20 including: seal means
located between the cap means and sleeve to locate the cap
means in sealing relation on the sleeve whereby when said cap
means is threaded on the collar the seal means inhibits the
escape of air through the air passage in the sleeve.
22. The structure of Claim 20 including: seal means
located between said collar and sleeve to locate the sleeve in
sealing relation on the tubular body whereby when said collar
is threaded on said tubular body the seal means inhibits the
escape of air between the sleeve and tubular body.
23. The mattress and filer check valve assembly of
Claim 11 wherein: said tubular body has an outer end and
external threads thereon, said sleeve having an outer end and a
collar secured to said outer end of the sleeve, said collar
having internal threads cooperating with said external threads
on the body to hold the sleeve on the tubular body, said cap
means having an annular flange with internal threads, said
collar having external threads cooperating with the internal
threads on the flange to mount said cap means on the sleeve.
24. The air mattress and filler check valve assembly
of Claim 23 including: seal means located between the cap
means and the outer end of the sleeve whereby the cap means is
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threaded on the collar and the seal means inhibits escape of
air from the chamber of the air mattress.
25. The air mattress and filler check valve assembly
of Claim 23 including: seal means located between said outer
end of the sleeve and collar whereby said collar is threaded on
said tubular body and the seal means inhibits escape of air
from the chamber of the air mattress.
26. The air mattress and filler check valve of Claim
11 wherein: said holder means includes an annular flexible
wall joined to the tubular body extended into the chamber
providing a recess for the body to locate the check valve
assembly in said chamber, and means securing said annular
flexible wall to one of said walls of the air mattress.
27. A fluid accommodating mattress comprising: fluid
impervious wall means surrounding a chamber for accommodating
fluid, filler check valve assembly for use in selectively
supplying fluid to said chamber and venting fluid from said
chamber, holder means mounting said check valve assembly on
said wall means, said holder means having tubular body, said
body having an inside wall surrounding an opening between the
chamber and externally of the mattress, one-way valve means
located in said opening to allow fluid to flow into the
chamber, said valve means having a collar surrounding the
tubular body, said collar mounted on the tubular body, and cap
means mounted on the collar for closing the one-way valve
means.
28. The mattress of Claim 27 wherein: said valve
means includes a sleeve located in the opening in the tubular
body, said collar being secured to said sleeve.
29. The mattress of Claim 28 including: first thread
means connecting the collar to the body, and second thread
means connecting the cap means to the collar.
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Description

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FIELD OF INVENTION
The inventiorl is directed to filler one-way valves
providing a passage into an air receiving chamber and a one-way
valve to prevent the air from flowing out of the chamber.
BACKGROUND OF INVENTION
Air mattresses are conventionally provided with short
tubea that are connected to hoses for carrying air to mattress
chambers. Plugs inserted into the end3 of the tubes prevent
the flow of air out of the air mattress chambers. The tubes
are used with hoses connected to air pumps to allow air under
pressure to be pumped into the air mattress chambers. One-way
flat-type valves have been incorporated into the tubes to
prevent reverse flow out of the air mattresses. Plugs snapped
into the ends of the tubes are used in association with the
flap valves to prevent leakage of air from the air mattresses.
The tubes are attached directly to outside walls of the air
mattresses. Another type of filler valve has a generally
cup-shaped valve holder having a threaded tubular nipple. A
valve body is threaded onto the nipple. The valve body has a
Plsxible flap valve that allows air to flow into an air
receiving chamber and prevents the air from flowing out of the
chamber. When the valve is turned onto the nipple, it i9
permanently closed.
The prior art structures facilitate the introduction of
air under pressure to an air mattress and like air receiving
structures do not have valving and cap structures that are
effective in eliminating leakage of air from the air
mattresses. The prior one-way valves are not readily released
so that the air in the air mattress can be evacuated. Air
inflators cannot be used to open the valve structures so that
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air can be introduced into the air chamber or evacuated
therefrom. The prior valve structures are not easily
manufactured and assembled.
SUMMARY OF INVENTION
The invention is directed to an air mattress provided
with a Eiller check valve assembly that is usable to permit air
to be selectively introduced into the air mattress and vented
from the air mattress. A cap is used to effectively seal the
valve assembly so as to pravent any leakage of air from the air
mattress. The air mattress has air impervious walls that
surround a chamber that accommodates air under pressure. Air
is supplied to the air mattress with the use of air blowers,
pumps, and the like through a filler check valve assembly. The
filler check valve assembly has a sleeve mounted in a holder
secured to the wall of the air mattress. A valving means
cooperates with the sleeve to allow air to flow into the
chamber of the air mattress and block the flow of air out of
the chamber. The valving means can be moved to an open
position to allow air to flow out of the chamber of the air
mattress. A cap closes the outer end of the valving means to
eliminate leaXage of air from the air mattress.
The filler check valve assembly is mounted as a unit on
the holder so that it can be separately constructed and tested
before it is used on the air mattress. The holder has a
tubular body with a passage for accommodating the sleeve of the
check valve assembly. The sleeve has a smooth cylindrical
outer surface to facilitate the insertion of the sleeve into
the passage of the tubular body. An annular flexible wall
joined to the tubular body is attached to -the air mattress.
The annular wall extends into the chamber of the body to hold
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the filler check valve assembly in a recessed position relative
to the outside wall of the air mattress. The filler check
valve assembly does not project outwardly from the outside wall
of the air mattress. The filler check valve and cap do no-t
interfere with the use of the air mattress. The functioning of
the check valve and cap are not impaired by covers over the air
mattress.
A preferred embodiment of the Piller check valve and
cap therefor has a cylindrical rigid sleeve having an inside
wall surrounding an axial air passage. The sleeve has an inner
end locatable in the chamber in the air mattress and an outer
end in communication with the atmosphere. The sleeve has a
cylindrical collar having internal and external threads. The
internal threads of the collar engage external threads of a
valve holder to secure the collar and the sleeve to the holder.
An O-ring is located between the top of the holder and the
collar. When the collar is threaded onto the holder, the
collar is moved down into a tight relationship with the O-ring
and the holder is wedged betwe0n the collar and the outer
surface of the sleeve. A cap having an annular flange with
internal threads that cooperate with the external threads of
the collar is used to close the air passage. When the cap is
threaded onto the collar, a flat seal member interposed between
the base of the cap and the top of the collar is held in a
close fitting relationship with the collar. The annular flange
of the cap grips the collar to further wedge the valve hold0r
between the collar and the outer surface of th0 sleeve. This
effectively seals the filler check valve onto the valve holder
to inhibit air from leaking Erom the air mattress. The inner
end of the sleeve has an annular beveled face that cooperates
with a valving member to close the air passage. The valving

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member is a disc or circular head carrying an annular seal
adapted to be biased into sealing engagement with the annular
face. A tubular guide is joined to the inner end of the sleeve
and accommodates a linear rod. The upper end of the rod is
attached to a spider head that slidably engages the inside wall
of the sleeve. The guide and spider head control the linear
movement of the valving member between its open and closed
positions. A spring located about the rod engages the guide
and spider head biasing the valving member of a closed
position. The valving member can be moved to an open position
by the application of pressure on the spider head after the cap
has been removed from the collar. This allows air to be vented
from the air mattres~ whereby the user can adjust the firmness
of the air mattress. A tubular filler adaptor is used to move
the valving member to an open position and allow air under
pressure from an air blower pump or the like to be introduced
into the chamber of the air mattress. As soon as the adaptor
is removed from the filler check valve assembly the spring will
bias the valving member to its closed position.
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DESCRIPTION OF DRAWING
Figure 1 is a perspective view of an air mattress
equipped with the filler check valve oE the invention in
assembled relation with an air blower for supplying air under
pres~ure to the air mattressJ
Figure 2 is an enlarged top view of the air mattress of
Figure 1 without the air blower and a cap closing the check
valve;
Figure 3 is an enlarged foreshortened sectional view
taken along the line 3-3 oE Figure 2~
Figure ~ is an enlarged sectional view taken along the

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line 4-4 o~ Figure 3~
Figure 5 is an enlarged sectional view taken along the
line 5-5 of Figure 4;
Figure 6 is an enlarged sectional view taken along the
line 6-6 of Figure 4;
Figure 7 is an enlarged bottom view of Figure 4;
Figure 8 is a top view of Figure 47
Figure 9 i~ an exploded sectional view similar to
Figure 4 showing the cap, sleeve, and holder separate from one
another7 and
Figure 10 is a sectional view similar to Figure 4
showing the valve assembly open and coupled to an apparatus ~or
supplying air to the air mattress.
DESCRIPTION OF PREFERRED EMBODIMENT
Referring to Eigure 1, there is shown an air mattress
indicated generally at 10 being inflated with an air blower 11.
Air mattress 10 i8 usable in an air bed to support one or more
persons. Air blower 11 has an electric motor driving a pump
operable to deliver air through a hose 12 coupled to a filler
check valve assembly indicated generally at 36 mounted on
mattress 10. An electric motor (not shown) within air blower
11 is conn0cted with an electrical conductor 13 and plug 14 to
a source of electric power. A manually operated switch 16
controls the operation of the electric motor. Other air supply
systems, such as a vacuum cleaner as 3hown in Figure 10, or a
manually operated purnp can be used to supply air to air
mattress 10.
Air mattress 10 has a generally rectangular top wall 17
loca-ted over a similar shaped bottom wall 1~. Generally
upright side walls 19 and 20 and end walls 21 and 22 are joined
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to the top and bottom walls 17 and 18 with the peripheral edge
portions or seams 23 and 24 and define mattress chamber 25.
Walls 17 to 22 are air impervious sheet members including an
inner plastic sheet and an outer ~abric sheet. As shown in
Figure 3, an upright web 26 extends transversely across chamber
25. Web 26 has top and bottom portions 31 and 32 secured to
the top and bottom walls 17 and 18 and to opposite end portions
28 and 29 of side walls 19 and 20, respectivèly. Returning to
Figures 1 and 2, a plurality of transverse seam lines 27 extend
across top wall 17 of mattre~s 10. Corner strips 33 ad 34 are
bonded to the inside of seams 23 and 24.
A filler check valve assembly 36 is located in a corner
of top wall 17. As shown in Figure 4, a holder indicated
generally at 103 mounts filler check valve assembly 36 on top
wall 17. Holder 103 has a generally upright tubular body 104
joined to an annular flexible wall 106. The upper end of
annular wall 106 is secured to an outwardly directed lip 107.
Lip 107 is secured with a heat seal to top wall 17. ~nnular
wall 106 extends downwardly into mattress chamber 25 and
provides a recess 108 for accommodating tubular body 104.
Holder 103 locates the entire filler check valve assembly 36
below the plane of top wall 17. In other words, holder 103 and
filler check valve assembly 36 projects into mattress chamber
25 as shown in Figure 4. 'rhere is no obstruction above wall 17
that would interfere with the use of mattress 10. The fiLler
check valve assembly 36 is in a concealed location which
precludes inadvertent opening of the valve assembly.
Filler check valve assembly 36 is a one-way valve
allowing air to flow into air mattress chamber 25 from a air
blower, vacuum cleaner apparatus or the like. As shown in
Figures 4, S, and 6 valve assembly 36 has a cylindrical rigid
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sleeve 109 located in tight fit relation in tubular body 104.
Sleeve 109 has a passage 111 to allow air to flow into and out
of mattress chamber 25. A cylindrical collar 112 is attached
to the upper end of sleeve 109. The body 104 has external
threads 113 that cooperate with threads 115 on the inside of
collar 112 to attach collar 11~ and sleeve 109 to the tubular
body 104. An 0-ring 114 i9 interposed between the top of
tubular body 104 and the juncture 110 of collar 112 and sleeve
109 to prevent air from escaping from chamber 25 between sleeve
109 and tubular body 104.
As shown in Figure 9, the inside wall 105 of the
tubular body 104 is cylindrical and smooth to accommodate
sleeve 109. The sleeve 109 has a smooth cylindrical outer
surface that is located in a tight fit relation with respect to
: 15 the inside surface 105 of tubular body 104. This permits
sleeve 109 to be inserted into and taken out of tubular body
104 without cutting or destroying the tubular body 104 or
taking the valve apart. This facilitates the assembly of the
valve on air mattress 10. The smooth cylindrical inside and
outside surfaces of body 104 and sleeve 109 respectively permit
the rotation of sleeve 109 relative to body 104 so that collar
112 can be firmly threaded onto body 104 thereby wedging body
104 between collar 112 and sleeve 109.
Returning to Figure 4, the lower portion oE sleeve 109
has a central tubular guide 116. As shown in Figure 5, a
plurality of arms 117 attach guide 116 to sleeve 109. Arms 117
are circumferentially spaced from each other to allow air to
flow through passage 111. A rod 11~ i9 slidably positioned in
guide 116 and attached at its upper end to a spider head 119
are slidably engageable with the inside surface oE sleeve 109
whereby sleeve 109 and tubular guide 116 allow linear movement
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of rod 118. 'rhis prevents -the coc~ing and misalignment of rod
118 in the sleeve 109. A circular valving head 122 is integral
with the lower end of rod 118. Head 122 has on its upper side
an annular groove 123 accommodating an annular seal member 124.
Seal member 124 is adapted to be located in surface engagement
with a beveled surface 126 on the lower end of sleeve 109. A
coil spring 121 located about rod 118 and engayeable with the
tubular guide 116 and spider 119 biases valving head 122 into a
closed position as shown in full lines in Figure 4, Valving
head 122 can be moved to an open position by applying downward
pressure on the ~pider head 119 as shown by the arrow 128.
This releases the annular seal member 124 from the beveled
surface 126 and allows air under pressure to flow from chamber
25 via passage 111 to the atmosphere.
The outer surface oE collar 112 has external threads
120 accommodating a cup-shaped cap 130. Cap 130 has an annular
cylindrical flange 131 having internal threads 132 that
cooperate with external threads 120 to hold the cap on collar
112. A flat seal member 133 is interposed between the base of
cap 130 and the top of juncture 110. When cap 130 is threaded
onto collar 112, seal member 133 is held in a tight
relationship with the top of juncture 110. Flange 131 hold3
collar 112 and tubular body 10~ in a tight it rel~tionship
with the outer surface of sleeve 109. This effectively seals
valve assembly 36 onto tubular body 10~ so as to prevent any
leakage of air from mattress chamb~r 25.
Referring to Figure 10, there is shown valve assembly
36 in the open position to discharge air under pre~sure into
mattress chamber 25. Cap 130 has been removed. A vacuum
cleaner 66 provides a source of air under pressure. 'rhe air is
delivered through a hose 67 to a tubular adaptor 68. The

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adaptor 68 slides into the free end of vacuum cleaner hose 67.
Adaptor 68 has a reduced diameter nipple or end 69 that fits
into the top of passage 111. When adaptor 68 is pushed into
sleeve 109, the spider head 119, rod 118, and the valving head
122 are moved down thereby opening the valve. The air flows
through adaptor 68, and passage 111 into the mattress chamber
25. As soon as adaptor 68 is removed from sleeve 109, spring
121 will immediately close the head 122 and hold seal 124 in
tight sealing engagement with beveled end face 126.
While there has been shown and described a preferred
embodiment of the filler check valve assembly of the inven-tion
a used with an air mattress, it i9 understood that changes in
the parts and arrangement of structure can be made by those
skilled in the art without departing from the invention. The
invention is defined in the following claims.
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Representative Drawing