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Патент USA US3037903

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June 5, 1962
c. 5. WHITE
.
3,037,893
BEARING ELEMENT COMPRISING FIBROUS FLUOROCARBON
Original Filed May 9, 1956
,1)
FEE: .5.
'IIZJIILYI/AE
13
50/1/0451‘; Mmem-ZZ
INVENTOR.
United States ‘Patent 0 ”
2
1
ous surface which prevents the material of the backing
3,037,893
layer from passing therethrough.
BEARH‘IG ELEMENT COMPRISING
FEBROUS FLUDROCARBON
Charles S. White, Rte. 3, Box 454-h, Palmdaie, Calif.
Original application May 9, 1956, Ser. No. 583,656, new
The bonding layer 22 secures the surface layer 23 to the
backing member 21. The ?bers and/ or ?laments of the
low friction surface layer 23 is made from fluorocarbon
Divided
resin, preferably polytetra?uoroethylene commonly sold
and this application Aug. 3, 1959, Ser. No. 831,393
5 Claims. (Cl. 154—43)
This invention pertains to low friction bearing material,
under the well-known name Te?on. The ?bers and/or
?laments are made into threads along with ?bers and/ or
?laments of a bondable material. The threads are woven
or otherwise interrelated into a cloth-like layer contain
Patent No. 2,907,612, dated Oct. 6, 1959.
is
3,037,893
Patented June 5, 1962
and particularly to a low friction bearing material made 10
ing low friction and bondable ?laments or ?bers by which
from clothlike fabric woven with threads containing low
it is secured to the backing layer 21 by the bondable
friction and bondable ?bers, and is a division of applica
layer 22. While in Patent No. 2,804,886 above men
tion Serial No. 583,656, ?led on May 9, 1956, now United
tioned the Woven ?ber material has bondable cords on
States Patent No. 2,907,612 issued October 6, 1959.
one face thereof, in FIG. 2 the layer of low friction ma
In the United States patents to C. S. White No. 2,804,
terial is illustrated as being made of threads 26 which are
886 issued September 3, 1957, and No. 2,906,552 issued
obtained from ?bers 27 of the low friction ?uorocarbon
September 29, 1959, and in C. S. White United States
resin material, such as Te?on, along with ?bers 28 of
application Serial No. 483,657 ?led May 9, 1956, for A
bondable material, such as cotton, nylon, vinyl and like
Metal Bearing Having a Low Friction Resin Surface, now
abandoned, bearing seals and the like are illustrated hav 20 resins, wool, glass and the like. Each of the threads 26
will have a varying proportion of the low friction mate
ing a dry surface of low friction resin material. When
rial therein and have exposed ?bers of a material which
the low friction ?uorocarbon resins, such as Te?on, are
will readily bond to other resins. The layer 23, when
drawn into threads and woven or otherwise formed into a
woven from the threads 26, will have a face containing
clothh'ke layer, additional bonding material is employed
therewith to retain the Te?on ?laments in ?xed position. 25 low friction resin material as well as ?bers or ?laments to
which an adhesive material 22 will bond so that the
It is an object of the present invention to provide a
clothlike material made from threads containing ?laments
resulting layer 23v may be directly bonded to backing
materials of any substance to which‘thc adhesive material
of Te?on and ?bers or ?laments of a bondable material.
will bond.
When the clothlike material is porous, a layer of latex or
other bondable material may be bonded to the bondable 30 The thread of the present invention is unique in that it
provides a layer 23 which has low friction ?laments
material to form a barrier layer. Any well-known bond
able resin or other material may be employed as a barrier
which are retained in position by the bondable ?laments
or ?bers which are provided therewith. The layer 23
material if it is capable‘ of preventing the passage of the
is of clothlike form made from threads which are woven,
material of the backing element and has a?inity to bond
compacted, matted or otherwise secured together.
therewith.
35
What is claimed is:
Accordingly, the main objects of the invention are: to
I. A bearing element comprising a backing member,
form a clothlike material from threads at least some of
and a fabric made from threads having polytetra?uoro
which have ?laments of Te?on therein along with other
ethylene ?bers and ?bers which readily bond to said
?laments or ?bers; to weave a cloth from threads con
taining low friction ?laments and ?bers or ?laments of a 40 backing member, said latter bondable ?bers being bond
ed to said backing member to mechanically secure said
bondable material, and, in general, to form a low friction
polytetra?uoroethylene
?bers in position to form the low
surface from threads containing bondable and nonbond
friction
surface
of
said
element.
able ?laments and/ or ?bers.
2. A bearing element comprising a backing member,
Other objects and features of novelty of the invention
will be speci?cally pointed out or will become apparent 45 and a fabric made from threads having low friction ?bers
and ?bers which readily bond to said backing member,
when referring, for a better understanding of the inven
said latter bondable ?bers being bonded to said backing
tion, to the following description taken in conjunction with
member to mechanically secure said low friction ?bers in
the accompanying drawing, wherein:
position to form the low friction surface of said element.
FIGURE 1 is a sectional view of a washer cut from a
‘3. A cloth woven from therads, at least some of said
sheet having a base material bonded to a material contain 50
threads having ?bers of low friction ?uorocarbon resin
ing threads at least some of which have low friction and
and ?bers which readily bond to a material which will
bondable ?bers and/or ?laments, and
not bond to the ?uorocarbon resin for bonding the cloth
FIG. 2 is an exploded View of a low friction layer show
to an element to which the material will bond.
ing a thread thereof containing the bondable and non
4. The invention as de?ned in claim 3 wherein said
bondable ?bers and/ or ?laments.
55 low friction ?bers are polytetra?uoroethylene ?bers.
In the above mentioned Patent No. 2,906,552, seals are
5. A cloth woven from threads, at least some of said
illustrated having a low friction resin material applied
threads having ?bers of low friction ?uorocarbon resin
to the shaft engaging faces thereof. The low friction ma
and ?bers which readily bond to a material which will not
terial employed therein was of the woven type having ?ne
interstices between the Te?on threads of the cloth mate 60 bond to the fluorocarbon resin for bonding the cloth to
an element to which the material will bond, the threads
rial. The present invention pertains to the use of threads
containing the low friction nonbondable and the bond
able ?bers and/ or ?laments.
In FIGS. 1 and 2, resilient backing members are illus
trated with the low friction material secured thereto in a 65
manner to prevent the passage of the material of the back
being made up of a preponderance of ?bers of low friction
?uorocarbon material.
References Cited in the ?le of this patent
UNITED STATES PATENTS
ing member through to the engaging face of the low fric
2,681,223
Walters et al ___________ __ June 15, 1954
tion material. In FIG. 1 a washer 24 is illustrated by
way of example having a backing layer 21 of rubber,
2,777,783
2,804,886
or other resilient material well known in the art. A bar 70
rier and bondable layer 22 secures a low friction layer 23
to the backing layer 21 in a manner to provide an impervi
2,906,552
2,907,612
2,919,219
Welch ______________ __ Jan. 15,
White ________________ __ Sept. 3,
White _______________ __ Sept. 29,
White ________________ _._. Oct. 6,
Smith _______________ __ Dec. 29,
1957
1957
1959
1959
1959
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