Patent US3893496A successfully refreshed from Google Patents.
US3893496A
Expired / Lapsed
US
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Friction coating and sealant for threaded parts
Assignee: Oakland Corp
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Filing: 1973-07-27
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Granted: 1975-07-08
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Expires: 1993-07-27
Abstract
Abstract A viscous non-tacky friction coating or deposit is provided on the threads of a threaded part to frictionally oppose separation of the coated part from a mating threaded member. The coating comprises a mixture of one or more suitable acrylic resins, and silicone or a polyamide. In one embodiment the resin includes finely divided material such as nylon plastic which cooperates with the viscous resin material to provide a sealant impervious to relatively high gas pressure.
Inventors
- 👤 Richard B Wallace
- 👤 Sidney L Reegen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 14:47
CPC Classifications
F; F16; F16B; F16B39/00; F16B39/22; F16B39/28; F16B39/34; C; C09; C09D; C09D133/00; F16B33/00; F16B33/06; F16B33/004; Y; Y10; Y10S; Y10S411/00; Y10S411/924; Y10S411/929; Y10S411/93
Claims Analysis
Total Claims: 36
Claim 1
Independent Claim
210 words
A FRICTION CONSTRUCTION COMPRISING A FIRST MEMBER HAVING A SMOTH SURFACE NORMALLY MOVABLE IN SLIDING RELATION UNDER PRESSURE AGAINST A SIMILARLY SHAPED SMOOTH SURFACE OF A COMPANION MEMBER, SAID FIRST MEMBER HAVING A DRY DEPOSIT OF A SOLID FRICTION PRODUCING MATERIAL PERMANENTLY BONDED TO THE SMOOTH SUFACE OF SAID FIRST MEMBER PRIOR TO BRINING SAID FIRST MEMBER INTO JUXTAPOSITION TO SAID COMPANION MEMBER, SAID DEPOSIT HAVING A NON-TACKY OUTER SURFACE TO PREVENT TREATED MEMBERS FROM STICKING TOGETHER, HAVING A HIGH VISCOSITY SUCH THAT VISCOUS FLOW TAKES PLACE UNDER CONTINUOUS APPLIED FORCE, AND CHARACTERIZED IN THAT THE RESISTANCE TO SEPERATION OF THE BOND TO THE SMOOTH SURFACE OF SAID ONE MEMBER EXCEEDS THE RESISTANCE TO VISCOUS FLOW UNDER CONTINUOUS APPLIED FORCE, AND IN THAT THE OUTER SURFACE OF SAID DEPOSIT HAS A HIGH FRICTION VALUE OPPOSING RELATIVE MOVEMENT BETWEEN SAID ONE MEMBER AND A COMPANION MEMBER, SAID MATERIAL BEING ESSENTIALLY A RESINOUS MIXTURE COMPRISING A MAJOR PROPORTION OF AN ACRYLIC POLYMERIC MATERIAL AND A MINOR PROPORTION OF AN ADHESION PROMOTING POLYMER IN AN AMOUNT EFFECTIVE TO INCREASE THE STRENGTH OF THE BOND OF THE RESINOUS MIXTURE TO THE SMOOTH SURFACE OF SAID FIRST MEMBER COMPARED TO THE TRENGTH OF THE CHARACTERISTIC BOND BETWEEN THE ACRYLIC POLYMERIC MATERIAL AND THE SMOOTH SURFACE.
Claim 2
Dependent Claim
210 words
A FRICTION CONSTRUCTION COMPRISING A FIRST MEMBER HAVING A SMOTH SURFACE NORMALLY MOVABLE IN SLIDING RELATION UNDER PRESSURE AGAINST A SIMILARLY SHAPED SMOOTH SURFACE OF A COMPANION MEMBER, SAID FIRST MEMBER HAVING A DRY DEPOSIT OF A SOLID FRICTION PRODUCING MATERIAL PERMANENTLY BONDED TO THE SMOOTH SUFACE OF SAID FIRST MEMBER PRIOR TO BRINING SAID FIRST MEMBER INTO JUXTAPOSITION TO SAID COMPANION MEMBER, SAID DEPOSIT HAVING A NON-TACKY OUTER SURFACE TO PREVENT TREATED MEMBERS FROM STICKING TOGETHER, HAVING A HIGH VISCOSITY SUCH THAT VISCOUS FLOW TAKES PLACE UNDER CONTINUOUS APPLIED FORCE, AND CHARACTERIZED IN THAT THE RESISTANCE TO SEPERATION OF THE BOND TO THE SMOOTH SURFACE OF SAID ONE MEMBER EXCEEDS THE RESISTANCE TO VISCOUS FLOW UNDER CONTINUOUS APPLIED FORCE, AND IN THAT THE OUTER SURFACE OF SAID DEPOSIT HAS A HIGH FRICTION VALUE OPPOSING RELATIVE MOVEMENT BETWEEN SAID ONE MEMBER AND A COMPANION MEMBER, SAID MATERIAL BEING ESSENTIALLY A RESINOUS MIXTURE COMPRISING A MAJOR PROPORTION OF AN ACRYLIC POLYMERIC MATERIAL AND A MINOR PROPORTION OF AN ADHESION PROMOTING POLYMER IN AN AMOUNT EFFECTIVE TO INCREASE THE STRENGTH OF THE BOND OF THE RESINOUS MIXTURE TO THE SMOOTH SURFACE OF SAID FIRST MEMBER COMPARED TO THE TRENGTH OF THE CHARACTERISTIC BOND BETWEEN THE ACRYLIC POLYMERIC MATERIAL AND THE SMOOTH SURFACE.
Claim 3
Dependent Claim
26 words
A construction as defined in claim 1 in which said first member is a threaded member and said smooth surface is the flank of a thread.
Claim 4
Dependent Claim
70 words
A construction as defined in claim 2 modified to increase the effectiveness of the sealing action to prevent leakage of fluids under pressure along the thread and to maintain resistance to rotation of the treated member relative to the threaded companion member at substantially elevated temperature, in which the resinous mixture comprises a dispersion of solid particles therein, said solid particles having an average transverse dimension of about 0.004 inch.
Claim 5
Dependent Claim
17 words
A construction as defined in claim 3 in which said solid particles comprise particles of fly ash.
Claim 6
Dependent Claim
19 words
A construction as defined in claim 3 in which said solid particles comprise particles of finely chopped glass fibers.
Claim 7
Dependent Claim
22 words
A construction as defined in claim 3 in which said solid particles have a dry volume of 10-40% of the complete mixture.
Claim 8
Dependent Claim
17 words
A construction as defined in claim 3 in which the solid particles comprise particles of nylon resin.
Claim 9
Dependent Claim
17 words
A construction as defined in claim 2 in which the adhesion promoting polymer is an organopolysiloxane resin.
Claim 10
Dependent Claim
25 words
A construction as defined in claim 8 in which the polysiloxane resin is provided in an amount of 5-15% by weight of the acrylic resin.
Claim 11
Dependent Claim
26 words
A construction as defined in claim 8 in which the polysiloxane resin is provided in an amount of about 10% by weight of the acrylic resin.
Claim 12
Dependent Claim
21 words
A construction as defined in claim 2 in which the adhesion promoting polymer is a polyamide having active amine end groups.
Claim 13
Dependent Claim
22 words
A construction as defined in claim 11 wherein said polyamide is a reactive product of a polybasic carboxylic acid and a polyamine.
Claim 14
Dependent Claim
23 words
A construction as defined in clain 12 wherein said polybasic carboxylic acid is a dibasic carboxylic acid and said polyamine is a diamine.
Claim 15
Dependent Claim
23 words
A construction as defined in clain 12 wherein said polybasic carboxylic acid is a dibasic carboxylic acid and said polyamine is a diamine.
Claim 16
Dependent Claim
16 words
A construction as defined in claim 13 wherein said dibasic carboxylic acid is dImerized linoleic acid.
Claim 17
Dependent Claim
13 words
A construction as defined in claim 13 wherein said diamine is ethylene diamine.
Claim 18
Dependent Claim
26 words
A construction as defined in claim 11 in which said adhesion promoting polymer is provided in an amount of 10-15% by weight of the resin mixture.
Claim 19
Dependent Claim
28 words
A construction as defined in claim 2 in which said acrylic polymeric material comprises a material selected from the group consisting of an acrylic polymer having the structure:
Claim 20
Dependent Claim
58 words
A construction as defined in claim 17 wherein the acrylic polymeric material comprises a mixture of at least one acrylic polymer and at least one methacrylic polymer in which one of said polymers has a characteristic hardness greater than that of the mixture and another of said polymers has a characteristic hardness less than that of the mixture.
Claim 21
Dependent Claim
52 words
A construction as defined in claim 17 wherein the acrylic polymeric material comprises a mixture of at least two acrylic polymers in which one of said polymers has a characteristic hardness greater than that of the mixture and another of said polymers has a characteristic hardness less than that of the mixture.
Claim 22
Dependent Claim
52 words
A construction as defined in claim 17 wherein the acrylic polymeric material comprises a mixture of at least two methacrylic polymers in which one of said polymers has a characteristic hardness greater than that of the mixture and another of said polymers has a characteristic hardness less than that of the mixture.
Claim 23
Dependent Claim
17 words
A construction as defined in claim 17 in which the adhesion promoting polymer is an organopolysiloxane resin.
Claim 24
Dependent Claim
25 words
A construction as defined in claim 4 in which the polysiloxane resin is provided in an amount of 5-15% by weight of the acrylic resin.
Claim 25
Dependent Claim
26 words
A construction as defined in claim 4 in which the polysiloxane resin is provided in an amount of about 10% by weight of the acrylic resin.
Claim 26
Dependent Claim
21 words
A construction as defined in claim 17 in which the adhesion promoting polymer is a polyamide having active amine end groups.
Claim 27
Dependent Claim
22 words
A construction as defined in claim 24 wherein said polyamide is a reactive product of a polybasic carboxylic acid and a polyamine.
Claim 28
Dependent Claim
23 words
A construction as defined in claim 25 wherein said polybasic carboxyl acid is a dibasic carboxylic acid and said polyamine is a diamine.
Claim 29
Dependent Claim
16 words
A construction as defined in claim 26 wherein said dibasic carboxylic acid is dimerized linoleic acid.
Claim 30
Dependent Claim
13 words
A construction as defined in claim 26 wherein said diamine is ethylene diamine.
Claim 31
Dependent Claim
26 words
A construction as defined in claim 24 in which said adhesjon promoting polymer is provided in an amount of 10-15% by weight of the resin mixture.
Claim 32
Dependent Claim
70 words
A construction as defined in claim 17 modified to increase the effectiveness of the sealing action to prevent leakage of fluids under pressure along the thread and to maintain resistance to rotation of the treated member relative to the threaded companion member at substantially elevated temperature, in which the resinous mixture comprises a dispersion of solid particles therein, said solid particles having an average transverse dimension of about 0.004 inch.
Claim 33
Dependent Claim
22 words
A construction as defined in claim 30 in which said solid particles have a dry volume of 10-40% of the complete mixture.
Claim 34
Dependent Claim
17 words
A construction as defined in claim 30 in which the solid particles comprise particles of nylon resin.
Claim 35
Dependent Claim
17 words
A construction as defined in claim 30 in which said solid particles comprise particles of fly ash.
Claim 36
Dependent Claim
19 words
A construction as defined in claim 30 in which said solid particles comprise particles of finely chopped glass fibers.
References Cited (Backward Citations)
US3022197A
Cited
US3814156A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-07-07 | 1979-01-06 | 1979-07-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-07-07 | 1983-01-06 | 1983-07-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-07-07 | 1987-01-06 | 1987-07-08 | $7700.00 | Window Closed / Lapsed |