Note: Descriptions are shown in the official language in which they were submitted.
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BACKGROUND OF THE INVENTION
Field of the Invention:
The present invention relates to slide fasteners,
and more particularly to a slide fastener slider having
a detachable pull tab.
Description of the Prior Art:
French Patent 2,453,614 discloses a slide fastener
slider having a pull tab which is removably attached to a
connector pivotally connec~ed to a slider body. The
disclosed pull tab however has a relatively complex mechanism
by which the pull tab is removably attached to the connector
and which re~uires a special tool or jig to detach the
pull tab from the connector. Further, this complex mechanism
bulges on opposite surfaces of the pull tab, thus making
the latter unsightly.
SUMMARY OF THE INVEN~IO~
It is therefore an object of the invention to
provide a slide fastener slider in which a pull tab can
be surely attached to pull tab connector and also can be
easily detached therefrom without using a special tool or
jig.
Another object of the invention is to provide a
slide fastener slider having a detachable pull tab which
is simple in construction with no bulges on either its top
or bottom surface so that a design or emblem, as desired,
can be borne over virtually the whole area of either pull
tab surface.
According to the present invention~ a sliderpull
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tab, which is removably attached to a pintle of a pull
tab connector pivotally connected to a slider body,
includes an elongate base having at one end a generally
C-shaped neck portion, and a closure rod telescopically
supported by the base and normally urged by a spring to
close a gap between opposite ends of the C-shaped neck
portion to thereby prevent the pull tab from being removed
from the connector. When the closure rod is retracted
from the gap against the bias of the spring, the connector
pintle is allowed to pass through the gap so that the pull
tab can be removed from the connector.
Many other advantages, features and additional objects
o the present invention will become mani~est to those versed
in the art upon making reference to the detailed description
and the accompanying drawings in which two preferred
embodiments incorporating the principles of the presen-t
invention are shown by way o~ illustrative example.
BRIEF DESCRIPrrION OF THE DR~WINGS
FIG. 1 is a plan view of a slide fastener slider
having a detachable pull tab embodying the present invention;
FIG. 2 iS an enlarged, partially cross-sectiona].
view taken along line II - II of FIG. 1, showing the pull
tab having been attached to a pull tab connector;
FIG. 3 is a transverse cross-sectional view taken
along line III - III of FIG. 2;
FIG. 4 is a partially cross-sectional view similar
to FIG. 2, showing the manner in whlch the pull tab is
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detached from the pull tab connector; and
FIG. 5 is a ~artially cross-sectional view similar to
FIG, 2, showing a modiLied pull tab.
DETAILED DESRCIPTION
The principles of the present invention are par-
ticularly useful when embodied in a slide fastener slider
such as shown in FIG. 1~ wholly indica-ted by the numeral
10. The slide fastener slider 10 generally comprises a
slider body 11, a pull tab connector 12 pivotally
connected at one end to a support lug lla on the slider
body 11 and having a-t the other end a pintle 12a, and a
pull tab 13 pivotally connected to the connector pintle
12a and detachable therefrom in a manner described below.
As shown in FIG. 2, the pull tab 13 includes an
elongate base 14 having at one end a generally C-shaped
neck portion 15, and a closure rod 16 telescopically
supported by the base 14. The closure rod 16 is partially
received in a lonyitudinal or axial hole 17 of the base 14
and is movable with respect to the la-tter b~tween a first
or "closed" position ~FIG. 2) in which the closure rod 16
closes a yap s between opposite ends of suc~ a C shape of
the n.eck portion 1~ to thereby prevent the passage of the
connector pintle 12a through the gap s, and a secord or
"open" position (FIG. 3) in which the closure rod 16 is
retracted from the gap s to thereby allow the connector
pintle 12a to pass through the gap s~ ~ compression
spring 18 is mounted in the hole 17 of the base 14 to
normally u.rge the closure rod 16 to the closed position
(FIG. 2).
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~ Y2~
At 1ts free or right end portion 19, the closure
rod 16 is dog-legged upwardly, i.e. toward the C-shaped
neck portion lS, so that when the closure rod 16 is in the
closed position (FIG. 2), its distal end l9a is engageable
with the free end 15a of the neck portion 15 so as to
limit the outward or rightward movement of the closure rod
16 against the bias of the spring 18.
To detach the pull tab 13 from the connector 12,
the closure rod 16 is moved simply by the finger (not
shown) in the direction of an arrow A against the bias of
the spring 18 until the closure rod 16 is retracted
from the gap s to allow the connector pintle 12a to pass
therethrough. Thus the pull tab 13 can be detached from
the connector 12 by s~nplygetting the connector pintle 12a
out of the C shape of the neck portion 15. To attach the
pull tab 13 again; with the closure rod 16 held in the
retracted or open position (FIG. ~ the connector pintle
12a is placed in the C shape of the neck portion lS, and
then the closure rod 16, when released, is moved to the
advanced or closed position (FIG.2) by the action of the
spring 18,
Accordingly, the pull tab 13 can be easily and
surely attached to the connector 12 and also can be easily
detached therefrom without using a special tool or jig.
Eurther, since the closure rod 16 is telescopically
supported through the base 14, there appear no bulges on
either the top or bottom surface of the base 14 so that a
desi~n or emblem, as desired, can be borne over the whole
area of either surface of the base 14.
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3~2
In order to facilitate its manual retraction, the
closure rod 16 may have on its bottom side (opposite to
the C-sha~ed neck portion 15) a projection 20 adjacent to
the heel l9b of the dog-leg shape, as indicated by phantom
lines in FIGS. 2 and 4.
FIG. 5 shows a modified pull tab 23 in which the
base 14 has, in one side opposi~e to the C-shaped neck
portion 15,a longitudinal sl.ot 24 communicating with
~he hole 17 and in which a straight closure rod 16 has a
projection 25 received in the slot 24 and slidable
therea].ong in response to the movement of the closure rod 16
between the closed and open positions. With this
arrangement, the extent to which the closure rod 16 is
moved is limited within the length of the slot 24.
Although various minor modifications may be
suygested by those versed in the art, it should be
understood that we wish to embody within the scope of the
patent warranted hereon, all such embodiments as
reasonab~y and properly come within the scope of my
contribution to the art.
