US4228917A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gasket for yarn spinning pack
Assignee: EIDP Inc
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Filing: 1979-05-07
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Granted: 1980-10-21
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Expires: 1999-05-07
Abstract
Abstract The addition of a circumferential groove in the inner peripheral surface of the ring gasket made of cold-flowable metal induces diametrical expansion of the gasket during compression.
Inventors
- 👤 Lyles H. Sowell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 11:10
CPC Classifications
B; B01; B01D; B01D29/00; B01D29/01; D; D01; D01D; D01D1/00; D01D1/10; D01D1/106; D01D4/00; D01D4/08; F; F16; F16J; F16J15/00; F16J15/02; F16J15/021; F16J15/022; F16J15/024; F16J15/025; F16J15/46; F16J15/48; B01D2201/00; B01D2201/34
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
89 words
In a polymer filter that includes a body and a lid joined together at juncture surfaces, said surfaces having matching annular V-shaped grooves forming a chamber, the improvement comprising a ring gasket of cold-flowable metal in said chamber, said ring gasket having an inner peripheral surface that includes a circumferential groove, and a height greater than the combined depth of the V-shaped grooves whereby the gasket is compressed when said lid and said body are joined together and said gasket permanently increases in thickness as its height is reduced.
Claim 2
Dependent Claim
89 words
In a polymer filter that includes a body and a lid joined together at juncture surfaces, said surfaces having matching annular V-shaped grooves forming a chamber, the improvement comprising a ring gasket of cold-flowable metal in said chamber, said ring gasket having an inner peripheral surface that includes a circumferential groove, and a height greater than the combined depth of the V-shaped grooves whereby the gasket is compressed when said lid and said body are joined together and said gasket permanently increases in thickness as its height is reduced.
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) | 1983-10-21 | 1984-04-21 | 1984-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-10-21 | 1988-04-21 | 1988-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-10-21 | 1992-04-21 | 1992-10-21 | $7700.00 | Window Closed / Lapsed |