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Патент USA US3072297

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Jan- 8, 1963
Filed July 10, 1961
Inventor .“
Redrick S. Sampson,
531 20% fag“
United States Patent 6 ”
Patented Jan. 8, 1963
may be brought to bear on the part used to close the
aperture. To assemble applicant’s simple, inexpensive,
one-piece device in the aperture provided in the support 5,
Frederick S. Sampson, Saugus, Mass, assignor to United
the device is ?rst inserted prongs ?rst through the aperture
as shown in FIG. 5. Thereafter the top of the hollow
collapsible head 1 is preferably struck a quick blow or
Filed July 10, 1961, Ser. No. 122,924
blows with a hammer thereby forcing the head to col
2 Claims. (Cl. ZED-59)
lapse or ?atten and move the expanding element 3 down
This invention relates to improvements in devices that
wardly between the ?ngers. This movement of the ex
may be used either as a plug button to close a hole in an 10 panding element 3 engaging the dimples '4 causes the
article of commerce or as a rivet to secure two or more
bendable ?ngers 2 to be moved outwardly so that the head
pieces in assembly.
i and the ?ngers 2 engage opposite sides of the support 5
An object of the invention is to provide a device that
?rmly holding the device in position as best shown in FIG.
will close a desired aperture in a support member in
6. Since the protuberances 4 on the ?ngers 2 are very
such a manner that the device will be tightly locked to the 15 strong in structure, the ?ngers are locked in their outward
Carr Fastener Corporation, Cambridge, Mass, 21 corpo
ration of Delaware
support member and prevented from being removed by
ly moved positions by the expanding element and it is
strong pressures that are built up within the support mem
practically impossible to remove the device from the
ber. An example of the use of the device may be in con
apertured support 5 while the parts of the device are in
nection with a motor vehicle mu?ler.
the relative positions shown in FIG. 6.
Another object of the invention is to provide a one 20
It will be understood by those skilled in the art that
piece hole closing or riveting device so constructed that
the device may be used also as a rivet when it is desirable
one or more hammer blows on the head of the device will
to secure together two or more apertured pieces. ‘ Such
move an axially movable expanding element to force bend
able ?ngers of the device outwardly and into engagement
with a support.
Other objects of the invention, in part, will be obvious
and, in part, will appear hereinafter.
use is so obvious that it is believed unnecessary to disclose
it in the drawings. It is also obvious that the protuber
25 ances may be placed in any desired position along the
?ngers depending upon the thickness of the support; and,
as a matter of fact, the device will accommodate itself
In the drawings:
to limited variations of thicknesses of materials.
FIG. 1 is a top plan view of the device of the invention;
While there has been illustrated and described a pre
FIG. 2 is a side elevation of the device shown in FIG. 1; 30 ferred embodiment of the device, it should be understood
FIG. 3 is a bottom plan view of the device shown in
that the invention is best de?ned by the following claims.
FIG. 2;
I claim:
FIG. 4 is a plan view of the device as it appears at
1. A one-piece device of the class described having a
tached to a supporting structure;
hollow collapsible head portion, a plurality of bendable
FIG. 5 is a section taken on the line 5-5 of FIG. 4 35 ?ngers extending from beneath said head portion, each
showing the construction of the device prior to ?nal as
?nger having an embossed protuberance extending there
from on an inner surface and an axially movable ex
FIG. 6 is a section on the line 5-5 similar to FIG. 5
panding element extending from said head and into a
but showing the construction of the device in ?nal locked
In the drawings, which illustrate a preferred embodi
space surrounded by said ?ngers whereby, when said col
40 lapsible head is ?attened, said expanding element engages
ment of the invention, there is shown a device formed
from a single piece of sheet metal having a hollow col
lapsible head portion 1, a plurality of bendable ?ngers 2
said protuberances and bends said ?ngers outwardly to
cooperate with said head and attach said device securely
to an apertured supporting means.
2. A device of the class described having a collapsible
(FIGS. 2, 3) and an axially movable means in the form 45 head portion, a plurality of attaching ?ngers extending
from beneath said head portion, at least one of the ?ngers
having an embossed protuberance extending therefrom on
an inner surface and an axially movable expanding ele
4 of any desired shape. The protuberances 4 are formed
ment extending from and connected to said head and into
from the material of the ?ngers within the edges of the 50 a space surrounded by said ?ngers whereby, when said
of a hollow expanding element 3 (FIGS. 5, 6) extending
from the collapsible head portion 1 between the ?ngers 2.
Each ?nger 2 preferably is provided with a protuberance
material of the ?ngers. In the drawing the protuberances
4 are shown as circular dimples extending from the inner
head is ?attened axially movable expanding element is
moved axially in said space, said expanding element en
surfaces of the ?ngers in spaced relation to the underside
gages said protuberance and bends said one ?nger out
of the head portion 1 (FIG. 2) so that they are in the
wardly to co-operate with a portion of said head and at
path of movement of the expanding element 3, as best 55 tach said device securely to an apertured supporting means.
shown in FIG. 5.
T0 illustrate one example of how the improved device
References Cited in the ?le of this patent
may be used, there is shown, in FIGS. 4, 5, and 6, an
apertured support 5 which may be a part of any article
of commerce that has an aperture ‘which must be closed 60
by a device to be more or less permanently locked in
place. Applicant is aware of the many so called snap-in
plug buttons on the market for closing apertures; but they
are unsatisfactory where unusual pressures of air, gas, etc.
Carpmael _____________ .._ Oct. 22,
Bedford ______________ __ Oct. 24,
Woodward ____________ __ Feb. 12,
Fuller _________________ __ Jan. 2,
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