Patent US1932633A successfully refreshed from Google Patents.
US4197352A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composite friction assemblies and methods of making such assemblies
Assignee: Occidental Chemical Corp
•
Filing: 1977-12-22
•
Granted: 1980-04-08
•
Expires: 1997-12-22
Abstract
Abstract The present invention relates to composite friction assemblies and to methods of making the assemblies. The assemblies include at least one friction member and a support member. The friction member is formed from a mixture of thermosettable phenol-aldehyde resin and filler material under conditions less than those which would thermoset the resin component. The preformed friction member is joined to the support member by molding a mixture of phenol-aldehyde resin and filler material in a mold cavity which utilizes a face of the preformed friction member as a portion thereof. The molding conditions are such that the resin component of the members are commonly cured, or thermoset, to produce a composite friction assembly.
Inventors
- 👤 John E. Emmett
- 👤 James R. Gregson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 03:51
CPC Classifications
F; F16; F16D; F16D69/00; F16D69/02; F16D69/025; F16D69/021; Y; Y10; Y10T; Y10T428/00; Y10T428/25; Y10T428/252; Y10T428/256; Y10T428/31; Y10T428/31504; Y10T428/31652; Y10T428/31942; Y10T428/31946
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
134 words
A composite friction assembly comprised of a friction member and a support member, (a) said friction member containing from about 10 to about 30 percent by weight of a phenol-aldehyde resin and from about 70 to about 90 percent by weight filler material, said filler material being predominantly metallic or asbestos, (b) said support member containing from about 20 to about 50 percent by weight of a phenol-aldehyde resin and from about 50 to about 80 percent by weight filler material, (c) said friction member having been separately preformed under conditions less stringent than those conditions required to thermoset the resin component thereof, (d) said friction member joined along at least one surface thereof to said support member by the common curing of the resin components of said friction member and said support member.
Claim 2
Dependent Claim
134 words
A composite friction assembly comprised of a friction member and a support member, (a) said friction member containing from about 10 to about 30 percent by weight of a phenol-aldehyde resin and from about 70 to about 90 percent by weight filler material, said filler material being predominantly metallic or asbestos, (b) said support member containing from about 20 to about 50 percent by weight of a phenol-aldehyde resin and from about 50 to about 80 percent by weight filler material, (c) said friction member having been separately preformed under conditions less stringent than those conditions required to thermoset the resin component thereof, (d) said friction member joined along at least one surface thereof to said support member by the common curing of the resin components of said friction member and said support member.
Claim 3
Dependent Claim
11 words
The assembly of claim 1 wherein the phenol-aldehyde resin is phenol-formaldehyde.
Claim 4
Dependent Claim
18 words
The assembly of claim 1 wherein the metal in said friction member is in the form of powder.
Claim 5
Dependent Claim
12 words
The assembly of claim 1 wherein the assembly is a brake assembly.
Claim 6
Dependent Claim
12 words
The assembly of claim 1 wherein the assembly is a clutch assembly.
Claim 7
Dependent Claim
14 words
The assembly of claim 1 wherein the assembly includes a plurality of friction members.
Claim 8
Dependent Claim
152 words
In a brake or clutch assembly comprising a friction member and a support member, the improvement wherein said friction member and said support member form a composite friction assembly wherein: (a) said friction member contains from about 10 to about 30 percent by weight of a phenol-aldehyde resin and from about 70 to about 90 percent by weight filler material, said filler material being predominantly metallic or asbestos, (b) said support member contains from about 20 to about 50 percent by weight of a phenol-aldehyde resin and from about 50 to about 80 percent by weight filler material, (c) said friction member has been separately preformed under conditions less stringent than those conditions required to thermoset the resin component thereof, (d) said friction member is joined along at least one surface thereof to said support member by the common curing of the resin components of said friction member and said support member.
Claim 9
Dependent Claim
152 words
In a brake or clutch assembly comprising a friction member and a support member, the improvement wherein said friction member and said support member form a composite friction assembly wherein: (a) said friction member contains from about 10 to about 30 percent by weight of a phenol-aldehyde resin and from about 70 to about 90 percent by weight filler material, said filler material being predominantly metallic or asbestos, (b) said support member contains from about 20 to about 50 percent by weight of a phenol-aldehyde resin and from about 50 to about 80 percent by weight filler material, (c) said friction member has been separately preformed under conditions less stringent than those conditions required to thermoset the resin component thereof, (d) said friction member is joined along at least one surface thereof to said support member by the common curing of the resin components of said friction member and said support member.
Claim 10
Dependent Claim
11 words
The assembly of claim 7 wherein the phenol-aldehyde resin is phenol-formaldehyde.
Claim 11
Dependent Claim
18 words
The assembly of claim 7 wherein the metal in said friction member is in the form of powder.
Claim 12
Dependent Claim
14 words
The assembly of claim 7 wherein the assembly includes a plurality of friction members.
Claim 13
Independent Claim
127 words
A method of producing a composite friction assembly comprising a friction member and a support member which comprises the steps of: (a) charging a mold having the capacity of said friction member with a mixture of thermosetting phenol-aldehyde resin and filler material, (b) forming a friction member in said mold under conditions less stringent than those which would substantially thermoset the resin component of said member, (c) charging a second mold with a mixture of a thermosetting phenol-aldehyde resin and filler material, wherein such second mold has the capacity of said support member and utilizes a face of the preformed friction member as an internal portion thereof, (d) molding said support member under conditions to thermoset the resin components of both members and produce a composite assembly.
Claim 14
Independent Claim
127 words
A method of producing a composite friction assembly comprising a friction member and a support member which comprises the steps of: (a) charging a mold having the capacity of said friction member with a mixture of thermosetting phenol-aldehyde resin and filler material, (b) forming a friction member in said mold under conditions less stringent than those which would substantially thermoset the resin component of said member, (c) charging a second mold with a mixture of a thermosetting phenol-aldehyde resin and filler material, wherein such second mold has the capacity of said support member and utilizes a face of the preformed friction member as an internal portion thereof, (d) molding said support member under conditions to thermoset the resin components of both members and produce a composite assembly.
Claim 15
Dependent Claim
35 words
The method of claim 11 wherein the product from step (d) is baked at a temperature of between about 120° C. and about 175° C. for a period between about 9 and about 15 hours.
Claim 16
Dependent Claim
11 words
The method of claim 11 wherein the phenol-aldehyde resin is phenol-formaldehyde.
Claim 17
Dependent Claim
29 words
The method of claim 11 wherein the mixture in step (a) contains from about 70 to about 90 percent by weight filler material which is predominantly metallic or asbestos.
Claim 18
Dependent Claim
20 words
The method of claim 11 wherein step (b) is carried out at pressures between about 20,000 and about 50,000 psi.
Claim 19
Dependent Claim
20 words
The method of claim 11 wherein step (d) is carried out at pressures between about 4,000 to about 50,000 psi.
Claim 20
Dependent Claim
12 words
The method of claim 11 wherein the assembly is a brake assembly.
Claim 21
Dependent Claim
12 words
The method of claim 11 wherein the assembly is a clutch assembly.
Claim 22
Dependent Claim
14 words
The method of claim 11 wherein the assembly includes a plurality of friction members.
References Cited (Backward Citations)
US1781074A
Cited
US1851087A
Cited
GB399738A
Cited
US2149483A
Cited
US2137986A
Cited
US2369502A
Cited
US2686140A
Cited
US3241391A
Cited
GB1019341A
Cited
FR1347812A
Cited
GB1040225A
Cited
GB1195114A
Cited
US4044188A
Cited
US4042085A
Cited
US4098943A
Cited
US4117185A
Cited
US4119591A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-04-08 | 1983-10-08 | 1984-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-04-08 | 1987-10-08 | 1988-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-04-08 | 1991-10-08 | 1992-04-08 | $7700.00 | Window Closed / Lapsed |