Patent US3275331A successfully refreshed from Google Patents.
US3275331A
Expired / Lapsed
US
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Seal and method of manufacture
Assignee: Acadia Elastomers Corp
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Filing: 1962-12-21
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Granted: 1966-09-27
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Expires: 1982-12-21
Abstract
No abstract record available.
Inventors
- 👤 Alex A Mastrobattista
- 👤 William J Fordon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:05
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/16; F16J15/32; F16J15/3284; Y; Y10; Y10S; Y10S277/00; Y10S277/935; Y10S277/936
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
158 words
CARTRIDGE-TYPE SEALING FOR INTERPOSITION BETWEEN RELATIVELY MOVABLE PARTS COMPRISING: A CASING ADAPTED TO FIT BETWEEN SAID PARTS AND FOR FIXED RELATION WITH ONE OF SAID PARTS, AND A LAMINATION OF ESSENTIALLY THIN ANNULI, EACH OF THE ANNULI HAVING A RADIAL WIDTH GREATER THAN ITS THICKNESS, AND BEING DISPOSED RADIALLY INTERMEDIATE OF SAID CASING AND ANOTHER OF SAID PARTS, AT LEAST ONE OF SAID ANNULI BEING OF INERT SYNTHETIC RESINOUS MATERIAL HAVING A LOW COEFFICIENT FRICTION AND HAVING A RADIAL DIMENSION COMPARED TO A CORRESPONDING RADIAL DIMENSION OF SAID OTHER OF SAID PARTS TO BE IN AT LEAST TANGENTIAL LINE CONTACT THEREWITH, AND AT LEAST ONE OF SAID ANNULI BEING OF ELASTOMERIC MATERIAL HAVING A RADIAL DIMENSION SUBSTANTIALLY CORRESPONDING TO SAID RADIAL DIMENSION OF SAID RESINOUS ANNULUS BEING ADAPTED TO RESILIENTLY MAINTAIN SAID RESINOUS ANNULUS IN CONTACT WITH SAID OTHER PART, AND BEING POSITIONED TO ESTABLISH AT LEAST LINE CONTACT WITH SAID OTHER PART AS SAID RESINOUS ANNULUS WEARS.
Claim 2
Dependent Claim
158 words
CARTRIDGE-TYPE SEALING FOR INTERPOSITION BETWEEN RELATIVELY MOVABLE PARTS COMPRISING: A CASING ADAPTED TO FIT BETWEEN SAID PARTS AND FOR FIXED RELATION WITH ONE OF SAID PARTS, AND A LAMINATION OF ESSENTIALLY THIN ANNULI, EACH OF THE ANNULI HAVING A RADIAL WIDTH GREATER THAN ITS THICKNESS, AND BEING DISPOSED RADIALLY INTERMEDIATE OF SAID CASING AND ANOTHER OF SAID PARTS, AT LEAST ONE OF SAID ANNULI BEING OF INERT SYNTHETIC RESINOUS MATERIAL HAVING A LOW COEFFICIENT FRICTION AND HAVING A RADIAL DIMENSION COMPARED TO A CORRESPONDING RADIAL DIMENSION OF SAID OTHER OF SAID PARTS TO BE IN AT LEAST TANGENTIAL LINE CONTACT THEREWITH, AND AT LEAST ONE OF SAID ANNULI BEING OF ELASTOMERIC MATERIAL HAVING A RADIAL DIMENSION SUBSTANTIALLY CORRESPONDING TO SAID RADIAL DIMENSION OF SAID RESINOUS ANNULUS BEING ADAPTED TO RESILIENTLY MAINTAIN SAID RESINOUS ANNULUS IN CONTACT WITH SAID OTHER PART, AND BEING POSITIONED TO ESTABLISH AT LEAST LINE CONTACT WITH SAID OTHER PART AS SAID RESINOUS ANNULUS WEARS.
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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) | 1969-09-26 | 1970-03-28 | 1970-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-26 | 1974-03-28 | 1974-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-26 | 1978-03-28 | 1978-09-27 | $7700.00 | Window Closed / Lapsed |