Note: Descriptions are shown in the official language in which they were submitted.
3~3~ 7~
50~
1PAIL MOUNT PUMP WITH INTEGRAL COVER
3 SPECIFICATION
FIELD OF THE I~VENTION
.
4This invention relates to pumps and more particularly
relates to a low profile integrally formed pump and pail cover.
6 I BACKGROUND OF THE INVENTION
7 l
¦ Often, for portability, pumps are mounted directly on
8 ¦ ~aint containers or pails. It simplifies and eliminates the
¦ need for trans~erring the paint or other liquid from the pail to
another container. Such procedures are generally messy and time
12~ consuming and are unnecessary where there are relatively small
~ ~obs involved.
13 To solve these problems purnps have been mounted directly
I on the pail for delivering the fluid from the pail to the joh
15¦ site. The usual procedure is simply to have a lid, very similar
17~ to the normal flat lid pressed on the pail, with the pump simply
l bolted to the lid with its intake tube immersed in the fluid.
I81 problem with such an arlangement is that the pump is heavy and
20~ has a high center of gravity making the combination of pump and
¦ pail unwieldly and as well as unstable. ~ further problem is
22 that pump failure completely shuts down the system. Often in
23 trying to move the pump and pail the system can easily be tipped
24 over causing spillage as well as damage to the pump. It would
251 be advantageous if the pump and pail cover arrangement could be
made to be compact, stable minimize shut-downs and have as low a
profile as possible
¦ Thus the present invention in one aspect seeks
¦; to provide an integral pump and pail cover having a very
low proiile.
31 Further the present invention seeks to p:rovide
32 a pump and pail cover arrangement which is compact in
design and easy to use.
I
~30~i7~
1 S-till further the present invention seeks to
2 provide a pump and pail cover arrangement which is
3 integral in design and easy to mount on a pail and to
4 provide a pump and pa:il cover arrangement which is very
portable and easlly carried to hard to reach jobs and
6 areas.
7 More particularly -the present invention seeks
8 to provide a pail mounted pump having a pail cover which
9 provides a low profile to prevent tipping of the pail~
1~ The pail cover is constructed with a skirt which will
11 fit around the periphery of the pail. Beneath the skirt
12 is a flange having an annulus to :Eit around the rim of
13 the pail to seal and minimize spilling of fluids in the
14 pail and stabilize the purnp and pail cover. Preferably
threaded apertures in the skirt receive thumb screws to
16 firmly secure the pail cover and pump to the pail. The
17 thumb screws allow the pump and pail cover to be easily
18 and conveniently removed and transported to another
19 pail. The pail cover is constructed with a recess for
receiving the pump housing to maintain the pump and pail
Z1 cover to provide very low profile. In a preferred
23 aspect, the pail cover receives a return tube diverted
24 from a manifold on the pumping system which allows fluid
to be recirculated back to the pall from the pump. A
26 return tube extension is connected to the aperture to
27 return recirculated fluid to the bottom of the pail
28 thereby preventing air from entering the system and
29 agitating fluid at the bottom of the pail to keep the
fluid well mixed.
.. . . . . .. " ..
vs~
1 BRIEF DESCRIPTION OF THE DRAWINGS
.
2 These and other aspects of the invention will
3 become apparent from the following detailed description
4 and the detailed drawings in which:
Figure 1 is a top view of a pump and pail
6 cover assembly.
7 Figure 2 is a side elevation of the pump and
8 pail cover assembly mounted on a fluid container.
g Figure 3 is a top elevation of the pail cover
with the pump removed.
11 Figure 4 is a sectional view taken at 4-4 of
12 Figure 3.
13 Figure 5 is a sectiona:L view taken a-t 5-5 of
14 Figure 4.
DETAILED DESCRIPTION OF THE INVENTION
_
16 This invention is for use with pumps such as
17 that disclosed and described in United States Patent No.
18 4,516,725 and the patents cited therein. The pump is
19 constructed to be very efficient and pump effectively, a
variety of high viscosity and abrasive fluids.
21 Referring to Figure 1, pump 10 is comprised of a pair of
22 alternating reciprocal pumps 12 and 14, driven by a
23 double acting reciprocal air motor 16. Air motor 16 is
24 driven by an adjustable valve 18 from a source ~not
shown) which is regulated by pressure gage 19. Outlets
26 20 and 22 of alternating reciprocal pumps connect to
27 manifold 24, 25 for delivery to quick connect/
28 disconnect hose fitting 26. The quick connect fitting
29 is normally closed when no hose is connected. This
2a
IL~0057:~L
1 fitting allows the pumping system to be easily and quickly
2 connected to a delivery system (not shown) such as a spray head
3 or gun.
4 The pumps 12, 14 draw fluid from pail or container 28
through intake or pickup tubes 30 and 32 which alternately draw
6 the fluid and deliver it through manifold 24, 25 to fitting 26.
7 The dual alternately reciprocal pumps have an added advantage
8 over prior pail mounted pumps in that one pump will continue to
9 deliver fluid should the other stop pumping. This provides the
distinct advantage of two pumps for the same fluid in which one
l1 ¦ would keep pumping should the other fa~l.
12 ¦ Pail cover 34 is formed to securely mount on the pail 28
13 and is designed to be integral with pump 10. The cover 34 has a
l4 ¦ skirt 36, mounting holes 38 for securing the pump, and a well or
15¦ recess 40 for receiving the air motor housing at 42 (~ig.2).
16¦ The purnp 10 is secured to pail cover 34 by bolting through bolt
171 holes 44 into hosses 46 and 48 mounting intake tubes 30 and 32
181 on the pumping system.
l9¦ Skirt 36 has a circumferential flange 50 on its interior
surface forming an annulus 52 which seats on the rim of pall 28
21l with thumb screws or wing nuts 5~ adjustably mount~d in threaded
22~ holes. The integral pump and pail cover assembly is mounted by
23 seating the rim of pail 28 in annulus 52 and tightening thumb
241 screws 54 tightly against the outside surface of the pail.
25l A recirculation and agitation mode is provided by
261 recirculating hose 58 secured to hole 56 in the cover by lock
27 i1 nut 59. Valve 60 opens and closes flow from coupling 26 and
28 ! rnanifold 24, 25 to hose 58 diverting flow back to the pail 58
29~ diverting flow back to the pail for continuous recirculation.
30l During .spraying operations when the delivery system is
31¦ ternporarily off the fluid is kept agitated ~nd recirculated by
32 op~ning valve G0 allowing continuous flow of fluid throu-~h the
~ s~
1 pump back to the pail to keep the paint or other fluid fully
2 mixed. As an alternative, a return pipe 62 (Fig. 2) could be
3 pxovided to be sure fluid return is beneath the surface of the
4 fluid in the pail. This prevents air frorn entering the system.
S It also assures that material at the bottom of the pail will be
6 stirred to prevent it from thickening. Lid 64 is secured by a
7¦ thumb screw 66 covers a port in pail cover 34 permitting the
81 user to view the fluid contents in pail 28 or to act as a vent.
9¦ Thus there has been described a unique pump system and
10¦ pail cover assembly for use on paint pails or the like which
¦ provides an inteqral compact assembly which is both stable and
2¦ low in ~rofile when mounted on a pail. The system provides the
131 added features of a recirculating system to keep the fluid in
14~ the pail constantly recirculating or agitating when the system
151 i5 not in use. The pump system when mounted on the pail is very
16¦ portable, easy to carry and ideal for hard to reach jobs.
17 This invention is not to be limited by the embodiment
18 shown in the drawings and descrihed in the description which is
19 given by w~y of example and not of limitation but only in
accordance with the scope of the appended claims.
21 !
22
23
24 11
26
27
28l1
291
32
I!
