US3622167A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sealing fastener assembly
Assignee: Federal Screw Works
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Filing: 1970-02-09
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Granted: 1971-11-23
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Expires: 1990-02-09
Abstract
Abstract A sealing fastener assembly in which a generally washer-shaped plastic seal is snap fitted over the flange of a threaded metal fastener such as a nut, screw or bolt. When the fastener is tightened, the seal is extruded into engagement with the fastener threads to seal the fastened joint against fluid leakage. In one form of the invention, the outer periphery of the seal is caused to roll upwardly to expose a dissimilarly colored area of the seal and thereby indicate that the fastener has been properly tightened.
Inventors
- 👤 Arthur E Velthoven
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:21
CPC Classifications
F; F16; F16B; F16B43/00; F16B43/001; F16B39/00; F16B39/22; F16B39/24; F16B39/28; F16B39/34; Y; Y10; Y10S; Y10S277/00; Y10S277/925; Y10S411/00; Y10S411/924; Y10S411/947
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
123 words
A sealing fastener assembly including a hard metallic fastener body having a thread, a radially outwardly projecting annular flange having a seat adjacent the outer periphery of said body and an annular recess extending radially between one end of said thread and said seat, and an extrudable resinous plastic seal having an annular sealing portion and a retainer portion projecting axially from said sealing portion and snap fitted over said flange to hold said seal on said body with said sealing portion adjacent said seat, said seat being operable to sever said sealing portion and radially inwardly displace a part of said sealing portion through said recess into engagement with said thread upon the tightening of said fastener assembly against an abutment surface.
Claim 2
Dependent Claim
123 words
A sealing fastener assembly including a hard metallic fastener body having a thread, a radially outwardly projecting annular flange having a seat adjacent the outer periphery of said body and an annular recess extending radially between one end of said thread and said seat, and an extrudable resinous plastic seal having an annular sealing portion and a retainer portion projecting axially from said sealing portion and snap fitted over said flange to hold said seal on said body with said sealing portion adjacent said seat, said seat being operable to sever said sealing portion and radially inwardly displace a part of said sealing portion through said recess into engagement with said thread upon the tightening of said fastener assembly against an abutment surface.
Claim 3
Dependent Claim
15 words
The structure set forth in claim 1 in which said fastener body comprises a nut.
Claim 4
Dependent Claim
15 words
The structure set forth in claim 1 in which said fastener body comprises a screw.
Claim 5
Dependent Claim
24 words
The structure set forth in claim 1 in which said retainer portion comprises a continuous collar extending upwardly and inwardly from said sealing portion.
Claim 6
Dependent Claim
45 words
The structures set forth in claim 1 in which said flange is provided with an undercut outer peripheral portion operable to hold a severed outer part of said sealing portion against the abutment surface subsequent to the severIng of said sealing portion by said seat.
Claim 7
Dependent Claim
16 words
The structure set forth in claim 1 in which said seal comprises a unitary polyethylene molding.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-11-22 | 1975-05-24 | 1975-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-22 | 1979-05-24 | 1979-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-22 | 1983-05-24 | 1983-11-23 | $7700.00 | Window Closed / Lapsed |