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Патент USA US2113152

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April 5, 1938;
’
J. F. JOHNSTON
v
2,113,152 -
SEALING STRIP
Filed Feb. 2'7, 1936
Jrm/E?f'aa
John .T'z-Jahnsi'bn
Patented Apr. 5, 1938
‘ 2,113,152
UNITED STATES PATENT OFFICE
2,113,152
SEALING STRIP
John F. Johnston, Ravenna, Ohio, assignor to The
B. F. Goodrich Company, New York, N. Y., a
corporation of New York
Application February 27, 1936, Serial No. 65,990
6 Claims. (CI. 20-69)
1
This invention relates to sealing strips such as
are used between an aperture and a cover there
shown in Figs. 1 to 3 except that the sponge run
ber strip is tapered to assist in placing the strip
for, and is especially useful in the sealing of re
in the groove.
frigerator doors and the like.
5
‘
-
The principal objects of the invention are to
provide efficient sealing with a minimum of force
and to provide a high degree of cushioning with
resistance to deterioration.
Other objects will appear from the following
1O
description and the accompanying drawing.
Of the drawing:
Fig. 1 is a perspective view of the preferred
form of the device.
Fig. 2 is a fragmentary cross sectional view of
the margin of a door with the strip in place, the
strip being shown uncompressed and in cross
1
section.
,
Fig. 3 is a similar view including a portion of
the door jamb and showing the strip compressed
as when the door is closed.
20
Fig. 4 is a cross-sectional view of a modi?ed
form of the invention.
'
Fig. 5 is a cross-sectional view of a further
modi?cation of the invention.
Referring to the drawing, the numeral l0 des
2 Ol ignates a hollow tubular body of dense elastic
rubber formed with a ?at base II and a- wall l2
extending therefrom, and therewith de?ning a
chamber l3. A reentrant groove I4 is formed be
tween the base and the wall de?ning the cham
30 ber, so as to permit a structural part of the door
to engage the strip.
-
,
'
~
In order to provide a high degree of compressi
bility, a deep strip of sponge rubber I5 is cement
ed or vulcanized to the base of the strip 10 and is
35 adapted to be received in a groove it formed in
the door I]. When the wall l2 ofthe rubber
strip is deformed by contact with the~jamb l8,
the base It thereof is also depressed, locally de
40
pressing the sponge rubber strip.
Where the cylindrical wall I2 rests at one mar
gin directly against a rigid portion of the door,
as in the preferred form shown in Figs. 1° to 3,
and the other margin is supported by the sponge
rubber, the greater distortion of the margin sup
ported by the sponge rubber causes a slight sliding
of the cylindrical wall l2 against the jamb I 8 at
> the time of engagement which insures clean con
tact of the strip with the jamb.
50
In the preferred form of the device one of the
metal sheathing plates IQ of the door projects
over the groove l6 of the door and enters the
groove H of the strip and a second sheathing
plate 20 projects over the base I l of the strip.
The form shown in Fig. 4 is the same as that
'
In the form of. the invention shown in Fig. 5
the dense rubber portion of the strip comprises a 5
?at base 2| formed at both margins withreen
trant grooves 22, 23, to receive metal sheathing
plates, a cylindrical wall 24 extending therefrom
and therewith de?ning a chamber 25. A strip of
sponge rubber 26 is cemented or vulcanized to the 10
base of the dense rubber strip to provide addi
tionalcushioning. In use the cushioning strip
26 is retained in a groove formed in the dooras
in the preferred form of the device.
In all forms of the device, the sponge rubber 15
cushion, which requires very little force to deform
it, is protected from contact with oils and greases
and from light and air by the dense rubber there
over.
I claim:
1
'
r:
1. A sealing strip comprising a body of sponge 20
rubber adapted to occupy a cavity in a closure
member, and a hollow strip of dense elastic rub
ber covering the face of the sponge rubber body -
and adapted to engage an opposing closure mem
ber, one margin of the hollow strip being formed 25
with a, reentrant groove for supporting it from
said ?rst named closure member and the other
margin being supporteddirectly by said body.
2. A sealing strip comprising a body of sponge 30
rubber adapted to occupy a cavity in a closure
member, a facing of dense elastic rubber on one
face thereof, and a semi-cylindrical wall of dense
elastic rubber integral with said facing and sup
ported at one of its margins by said facing and 35
at the other margin by said closure member.
3. A sealing‘strip comprising a body of sponge
rubber adapted to occupy a cavity in a closure
“member, a facing of dense elastic rubber on one
face thereof and a semi-cylindrical wall of dense 40
elastic rubber integral with said facing at the
side opposite the sponge rubber body, one margin
of said wall being, supported directly by said
facing, the other margin being attached to said
facing and formed with a reentrant groove 45
whereby said margin may be supported by the
closure member.
.
4.‘ A sealing strip comprising a body of sponge
rubber, a hollow sealing element of elastic dense '
rubber having a-wall, portion disposed at a face 50
of the sponge rubber approximately normal to
the. face, whereby when the hollow element is
pressed toward said body said wall portion causes
local depression of and cushioning by the sponge
2
9,118,162
5. A sealing strip as de?ned in claim 4 in which
a layer of dense elastic rubber is disposed upon
the face of the sponge rubber at the base 0! the
said wall portion to protect the sponge rubber and
transmit the pressure of the wall portion thereto.
6. A sealing member comprising a body 01' rub
ber material adapted to ?ll a cavity in a closure
member and compressible therein, and a hollow
arched sealing member of rubber attached there
to and extending beyond said cavity to engage the
mating closure member, said arched sealing
member having one legsupported directly by the
closure member and the other supported directly 5
by said body.'
7
JOHN F. J OHNBTON;
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