US3904731A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Molded plastic bearing assembly
Assignee: Kamatics Corp
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Filing: 1973-11-08
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Granted: 1975-09-09
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Expires: 1993-11-08
Abstract
Abstract A bearing assembly comprises two engaging members movable relative to one another. One of said members has a bearing surface made of metal or ceramic coated with a thin film of a parting agent, and the other bearing surface is a cured mixture of a curable acrylate composition and particulate polytetrafluoroethylene.
Inventors
- 👤 Stanley S Orkin
- 👤 Edward John Nagy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 19:31
CPC Classifications
F; F16; F16C; F16C33/00; F16C33/02; F16C33/04; F16C33/043; F16C11/00; F16C11/04; F16C11/06; F16C11/0614; F16C33/20; F16C33/201; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49636; Y10T29/49643; Y10T29/49647; Y10T29/49648; Y10T29/49657; Y10T29/49661; Y10T29/4971
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
159 words
A method of producing a molded bearing assembly comprising two coengaging members movable relative to one another, the first of said members having a bearing surface selected from the group consisting of metal and ceramic and the bearing surface of said other member comprising a molded mixture of an acrylate composition and particulate solid lubricant, the bearing surface of said first member being coated with a thin film of a parting agent to prevent adhesion thereof to said molded bearing surface, the steps comprising coating said first bearing member with a thin film of a parting agent, applying a curable mixture of said acrylate composition and particulate solid lubricant to the parting agent coated first bearing member and curing said mixture in the absence of an oxygen-containing gas at a temperature ranging from ambient temperature to 325*F, thereby producing said other member and said molded bearing assembly, said acrylate composition comprising a mixture of an acrylate having the formula
Claim 2
Independent Claim
159 words
A method of producing a molded bearing assembly comprising two coengaging members movable relative to one another, the first of said members having a bearing surface selected from the group consisting of metal and ceramic and the bearing surface of said other member comprising a molded mixture of an acrylate composition and particulate solid lubricant, the bearing surface of said first member being coated with a thin film of a parting agent to prevent adhesion thereof to said molded bearing surface, the steps comprising coating said first bearing member with a thin film of a parting agent, applying a curable mixture of said acrylate composition and particulate solid lubricant to the parting agent coated first bearing member and curing said mixture in the absence of an oxygen-containing gas at a temperature ranging from ambient temperature to 325*F, thereby producing said other member and said molded bearing assembly, said acrylate composition comprising a mixture of an acrylate having the formula
Claim 3
Independent Claim
157 words
A method of producing a molded bearing assembly comprising two coengaging members movable relative to one another, the first of said members having a bearing surface selected from the group consisting of metal and ceramic and the bearing surface of said other member comprising a molded mixture of an acrylate composition and particulate solid lubricant, the bearing surface of said firsT member being coated with a thin film of a parting agent to prevent adhesion thereof to said molded bearing surface, the steps comprising coating said first bearing member with a thin film of a parting agent, applying a curable mixture of said acrylate composition and particulate solid lubricant to the parting agent coated first bearing member and curing said mixture in the presence of an oxygen-containing gas at a temperature ranging from about 100*-325*F, thereby producing said other member and said molded bearing assembly, said acrylate composition comprising a mixture of an acrylate having the formula
Claim 4
Independent Claim
157 words
A method of producing a molded bearing assembly comprising two coengaging members movable relative to one another, the first of said members having a bearing surface selected from the group consisting of metal and ceramic and the bearing surface of said other member comprising a molded mixture of an acrylate composition and particulate solid lubricant, the bearing surface of said firsT member being coated with a thin film of a parting agent to prevent adhesion thereof to said molded bearing surface, the steps comprising coating said first bearing member with a thin film of a parting agent, applying a curable mixture of said acrylate composition and particulate solid lubricant to the parting agent coated first bearing member and curing said mixture in the presence of an oxygen-containing gas at a temperature ranging from about 100*-325*F, thereby producing said other member and said molded bearing assembly, said acrylate composition comprising a mixture of an acrylate having the formula
Claim 5
Independent Claim
115 words
A METHOD FOR PRODUCING A MOLDED BEARING ASSEMBLY COMPRISING TWO COENGAGING MEMBERS MOVABLE RELATIVE TO ONE ANOTHER, THE FIRST OF SAID MEMBERS HAVING A BEARING SURFACE SELECTED FROM THE GROUP CONSISTING OF METAL AND CERAMIC AND THE BEARING SURFACE OF SAID OTHER MEMBER COMPRISING A MOLDED MIXTURE OF AN ACRYLATE COMPOSITION WHICH EXHIBITS ANAEROBIC CURING CHARACTERISTICS AND WHICH IS A LIQUID AT AMBIENT TEMPERATURE AND PRESSURE AND PARTICULATE SOLID LUBRICANT, THE BEARING SURFACE OF SAID FIRST MEMBER BEING COATED WITH A THIN FILM OF A PARTING AGENT TO PREVENT ADHESION THEREOF TO SAID MOLDED BEARING SURFACE, THE STEPS COMPRISING COATING SAID FIRST BEARING MEMBER WITH A THIN FILM OF A PARTING AGENT, APPLYING A CURABLE
Claim 6
Independent Claim
115 words
A METHOD FOR PRODUCING A MOLDED BEARING ASSEMBLY COMPRISING TWO COENGAGING MEMBERS MOVABLE RELATIVE TO ONE ANOTHER, THE FIRST OF SAID MEMBERS HAVING A BEARING SURFACE SELECTED FROM THE GROUP CONSISTING OF METAL AND CERAMIC AND THE BEARING SURFACE OF SAID OTHER MEMBER COMPRISING A MOLDED MIXTURE OF AN ACRYLATE COMPOSITION WHICH EXHIBITS ANAEROBIC CURING CHARACTERISTICS AND WHICH IS A LIQUID AT AMBIENT TEMPERATURE AND PRESSURE AND PARTICULATE SOLID LUBRICANT, THE BEARING SURFACE OF SAID FIRST MEMBER BEING COATED WITH A THIN FILM OF A PARTING AGENT TO PREVENT ADHESION THEREOF TO SAID MOLDED BEARING SURFACE, THE STEPS COMPRISING COATING SAID FIRST BEARING MEMBER WITH A THIN FILM OF A PARTING AGENT, APPLYING A CURABLE
Claim 7
Dependent Claim
22 words
The method of claim 3 wherein said acrylate composition is applied to said parting agent coated first bearing member at ambient temperature.
Claim 8
Dependent Claim
29 words
The method of claim 4 wherein said acrylate composition is applied to said parting agent coated first bearing member by injection at a pressure as low as 0.25 lbs/in2.
Claim 9
Independent Claim
167 words
A method for producing a molded bearing assembly comprising two coengaging members movable relative to one another, the first of said members having a bearing surface selected from the group consisting of metal and ceramic and the bearing surface of said other member comprising a molded mixture of an acrylate composition which exhibits anaerobic curing characteristics and which is a liquid under ambient temperature and pressure and particulate solid lubricant, the bearing surface of said first member being coated with a thin film of a parting agent to prevent adhesion thereof to said molded bearing surface, the steps comprising locating said inner bearing member within an outer housing member with the spacing therebetween being sufficient so that on injection of said mixture of acrylate composition and particulate solid lubricant no appreciable separation of said particulate solid lubricant from the mixture occurs, coating the inner bearing surface with a parting agent, injecting said mixture of acrylate composition aNd particulate solid lubricant into said spacing and curing said mixture.
Claim 10
Independent Claim
167 words
A method for producing a molded bearing assembly comprising two coengaging members movable relative to one another, the first of said members having a bearing surface selected from the group consisting of metal and ceramic and the bearing surface of said other member comprising a molded mixture of an acrylate composition which exhibits anaerobic curing characteristics and which is a liquid under ambient temperature and pressure and particulate solid lubricant, the bearing surface of said first member being coated with a thin film of a parting agent to prevent adhesion thereof to said molded bearing surface, the steps comprising locating said inner bearing member within an outer housing member with the spacing therebetween being sufficient so that on injection of said mixture of acrylate composition and particulate solid lubricant no appreciable separation of said particulate solid lubricant from the mixture occurs, coating the inner bearing surface with a parting agent, injecting said mixture of acrylate composition aNd particulate solid lubricant into said spacing and curing said mixture.
Claim 11
Dependent Claim
21 words
The method of claim 6 wherein the spacing between the inner bearing member and outer housing ranges between about 5-60 mils.
Claim 12
Dependent Claim
18 words
The method of claim 6 wherein said mixture is injected at a pressure between 0.25 - 1,000 psi.
Claim 13
Dependent Claim
16 words
The method of claim 6 wherein said mixture is injected at a pressure between 0.25-50 psi.
Claim 14
Dependent Claim
13 words
The method of claim 6 wherein said mixture is injected at ambient temperature.
Claim 15
Dependent Claim
34 words
The method of claim 6 wherein said mixture is cured in the presence of an oxygen-containing gas at a temperature ranging from about 100*-325*F for a period ranging from about 1/4 to 2 hours.
Claim 16
Dependent Claim
18 words
The method of claim 6 wherein said acrylate composition comprises a mixture of an acrylate having the formula
Claim 17
Dependent Claim
37 words
The method of claim 6 which also includes treating the interior surface of the outer housing member prior to injection of said mixture into said spacing to enhance the bonding of the moldable outer bearing composition therewith.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-09-08 | 1979-03-10 | 1979-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-08 | 1983-03-10 | 1983-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-08 | 1987-03-10 | 1987-09-09 | $7700.00 | Window Closed / Lapsed |