Patent US4909814A successfully refreshed from Google Patents.
Patent US3332566A successfully refreshed from Google Patents.
US3332566A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Accessories for chemical glassware apparatus
Assignee: Individual
•
Filing: 1965-03-31
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Granted: 1967-07-25
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Expires: 1985-03-31
Abstract
No abstract record available.
Inventors
- 👤 Edwin D Phillips
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:41
CPC Classifications
B; B01; B01L; B01L3/00; B01L3/56; B01L3/565; F; F16; F16J; F16J15/00; F16J15/02; F16J15/06; F16J15/10; F16J15/104; F16J15/106; Y; Y10; Y10S; Y10S285/00; Y10S285/911
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
145 words
A GASKET COMPRISING A FLAT ONE-PIECE ANNULAR BODY FORMED OF A SYNTHETIC RESIN PLASTIC HAVING RELATIVELY WIDE TOP AND BOTTOM PARALLEL SURFACES AS COMPARED TO THE BODY THICKNESS WHICH IS APPROXIMATELY 10/100 OF AN INCH, THE GASKET HAVING GROOVES FORMED IN EACH OF SAID SURFACES, THE GROOVES BEING V-SHAPED IN TRANSVERSE SECTION, THE GROOVES BEING CONCENTRIC WITH ONE ANOTHER AND LYING SIDE BY SIDE DEFINING ALTERNATING V-SHAPED RIBS HAVING ALTERNATING OPPOSITELY DIRECTED APICES AND CHANNELS, THE CHANNELS BEING SEPARATED BY SLOPING WALLS THAT ARE RELATIVELY THIN AND OF APPROXIMATELY 20/1000 OF AN INCH THICKNESS SO THAT THE RELATIVELY THIN WALLS SEPARATING THE GROOVES WILL BE FLEXED WHEN PRESSURE IS APPLIED IN A DIRECTION TO FORCE THE TOP AND BOTTOM SURFACES OF THE GASKET TOWARD ONE ANOTHER WHEREBY THE APICES OF THE RIBS WILL BE TIGHTLY PRESSED AGAINST COOPERATING SURFACES TO ESTABLISH A TIGHT SEAL THEREWITH.
Claim 2
Dependent Claim
145 words
A GASKET COMPRISING A FLAT ONE-PIECE ANNULAR BODY FORMED OF A SYNTHETIC RESIN PLASTIC HAVING RELATIVELY WIDE TOP AND BOTTOM PARALLEL SURFACES AS COMPARED TO THE BODY THICKNESS WHICH IS APPROXIMATELY 10/100 OF AN INCH, THE GASKET HAVING GROOVES FORMED IN EACH OF SAID SURFACES, THE GROOVES BEING V-SHAPED IN TRANSVERSE SECTION, THE GROOVES BEING CONCENTRIC WITH ONE ANOTHER AND LYING SIDE BY SIDE DEFINING ALTERNATING V-SHAPED RIBS HAVING ALTERNATING OPPOSITELY DIRECTED APICES AND CHANNELS, THE CHANNELS BEING SEPARATED BY SLOPING WALLS THAT ARE RELATIVELY THIN AND OF APPROXIMATELY 20/1000 OF AN INCH THICKNESS SO THAT THE RELATIVELY THIN WALLS SEPARATING THE GROOVES WILL BE FLEXED WHEN PRESSURE IS APPLIED IN A DIRECTION TO FORCE THE TOP AND BOTTOM SURFACES OF THE GASKET TOWARD ONE ANOTHER WHEREBY THE APICES OF THE RIBS WILL BE TIGHTLY PRESSED AGAINST COOPERATING SURFACES TO ESTABLISH A TIGHT SEAL THEREWITH.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-07-24 | 1971-01-23 | 1971-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-24 | 1975-01-23 | 1975-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-24 | 1979-01-23 | 1979-07-25 | $7700.00 | Window Closed / Lapsed |