US3627334A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid-sealing washer and joint assembly
Assignee: Individual
•
Filing: 1969-03-13
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Granted: 1971-12-14
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Expires: 1989-03-13
Abstract
Abstract A washer for making a fluid-type seal between a pair of surfaces. The washer has an opening through it which carries at least a fragment of a thread so as to prevent the washer from falling off the threaded end of a bolt or stud which forms part of a joint assembly. It also includes a pair of opposed parallel planar surfaces, each of which bears a layer of solid elastomeric material, said layers being not less than 0.001 and not greater than 0.004 inches thick, the material of which in such a thin layer has the inherent property of deforming to conform to irregularities in a surface brought against it, but without cold flow.
Inventors
- 👤 Robert R Reddy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 15:04
CPC Classifications
F; F16; F16B; F16B43/00; F16B43/001; Y; Y10; Y10S; Y10S411/00; Y10S411/915; Y10S411/999
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
104 words
A sealing washer comprising: an annular solid metallic ring having a central axis, a pair of flat parallel surfaces normal to said central axis, a wall defining an opening extending between said surfaces and spaced from their edges, at least a fragment of a thread in said wall, and a layer adhered to both of said surfaces of a solid material having the inherent property in thin sections of deforming to conform, but without cold flow to irregularities in a surface brought against it, wherein each said layer is a fluoroelastomer having a thickness not greater than0.004 inches and not less than 0.001 inches.
Claim 2
Dependent Claim
104 words
A sealing washer comprising: an annular solid metallic ring having a central axis, a pair of flat parallel surfaces normal to said central axis, a wall defining an opening extending between said surfaces and spaced from their edges, at least a fragment of a thread in said wall, and a layer adhered to both of said surfaces of a solid material having the inherent property in thin sections of deforming to conform, but without cold flow to irregularities in a surface brought against it, wherein each said layer is a fluoroelastomer having a thickness not greater than0.004 inches and not less than 0.001 inches.
Claim 3
Dependent Claim
21 words
A sealing washer according to claim 1 in which the material is selected from the group consisting of Kel-F and Teflon.
Claim 4
Dependent Claim
143 words
In combination: a pair of bodies, each with an abutment surface, a threaded element passing through the bodies, and a washer sandwiched and tightly held between said abutment surfaces comprising: a sealing washer comprising an annular solid metallic ring having a central axis, a pair of flat parallel surfaces normal to said central axis, a wall defining an opening extending between said surfaces and spaced from their edges, at least a fragment of a thread in said wall and engaging the thread adhered to The threaded element, and a layer on both of said surfaces of a solid material having the inherent property in thin sections of deforming to conform, but without cold flow, to irregularities in a surface brought against it, wherein each said layer is a fluoroelastomer having a thickness not greater than 0.004 inches and not less than 0.001 inches.
Claim 5
Dependent Claim
143 words
In combination: a pair of bodies, each with an abutment surface, a threaded element passing through the bodies, and a washer sandwiched and tightly held between said abutment surfaces comprising: a sealing washer comprising an annular solid metallic ring having a central axis, a pair of flat parallel surfaces normal to said central axis, a wall defining an opening extending between said surfaces and spaced from their edges, at least a fragment of a thread in said wall and engaging the thread adhered to The threaded element, and a layer on both of said surfaces of a solid material having the inherent property in thin sections of deforming to conform, but without cold flow, to irregularities in a surface brought against it, wherein each said layer is a fluoroelastomer having a thickness not greater than 0.004 inches and not less than 0.001 inches.
Claim 6
Dependent Claim
20 words
A combination according to claim 3 in which the material is selected from the group consisting of Kel-F and Teflon.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-12-13 | 1975-06-14 | 1975-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-13 | 1979-06-14 | 1979-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-13 | 1983-06-14 | 1983-12-14 | $7700.00 | Window Closed / Lapsed |