Patent US3345077A successfully refreshed from Google Patents.
US3345077A
Expired / Lapsed
US
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Sealing washer for rotary mechanical seal
Assignee: JOHN CRANE HOUDAILLE Inc A CORP OF
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Filing: 1965-07-15
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Granted: 1967-10-03
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Expires: 1985-07-15
Abstract
No abstract record available.
Inventors
- 👤 Novosad Eugene
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 07:20
CPC Classifications
B; B29; B29C; B29C45/00; B29C45/14; F; F16; F16J; F16J15/00; F16J15/16; F16J15/34; F16J15/3496; Y; Y10; Y10S; Y10S277/00; Y10S277/924
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
125 words
A SEALING WASHER FOR A MECHANICAL SEAL OR THE LIKE, SAID WASHER COMPRISING A MAIN ANNULAR BODY OF SYNTHETIC PLASTIC MATERIAL MOLDABLE UNDER HEAT AND PRESSURE, A FLANGE EXTENDING RADIALLY FROM THE MAIN BODY, AN AXIALLY EXTENDING ANNULAR NOSE AT ONE END OF THE MAIN BODY, AND A RING OF A METALLIC MATERIAL WHICH REMAINS HARD UNDER SUCH HEAT AND PRESSURE FORMING A PART OF SAID NOSE, SAID RING EXTENDING THROUGH SAID FLANGE AND HAVING RADIALLY DISPOSED SURFACES EXPOSED TO THE EXTERIOR OF THE WASHER AT BOTH AXIAL ENDS OF SAID RING, SAID RING FORMING THE RADIALLY OUTER PART OF SAID NOSE, AND SAID NOSE HAVING A RADIALLY DISPOSED SURFACES THEREON WHICH IS CO-PLANAR WITH ONE OF THE RADIALLY DISPOSED SURFACES ON THE SAID RING.
Claim 2
Dependent Claim
125 words
A SEALING WASHER FOR A MECHANICAL SEAL OR THE LIKE, SAID WASHER COMPRISING A MAIN ANNULAR BODY OF SYNTHETIC PLASTIC MATERIAL MOLDABLE UNDER HEAT AND PRESSURE, A FLANGE EXTENDING RADIALLY FROM THE MAIN BODY, AN AXIALLY EXTENDING ANNULAR NOSE AT ONE END OF THE MAIN BODY, AND A RING OF A METALLIC MATERIAL WHICH REMAINS HARD UNDER SUCH HEAT AND PRESSURE FORMING A PART OF SAID NOSE, SAID RING EXTENDING THROUGH SAID FLANGE AND HAVING RADIALLY DISPOSED SURFACES EXPOSED TO THE EXTERIOR OF THE WASHER AT BOTH AXIAL ENDS OF SAID RING, SAID RING FORMING THE RADIALLY OUTER PART OF SAID NOSE, AND SAID NOSE HAVING A RADIALLY DISPOSED SURFACES THEREON WHICH IS CO-PLANAR WITH ONE OF THE RADIALLY DISPOSED SURFACES ON THE SAID RING.
References Cited (Backward Citations)
US2425209A
Cited
US3122375A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-10-02 | 1971-04-03 | 1971-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-02 | 1975-04-03 | 1975-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-02 | 1979-04-03 | 1979-10-03 | $7700.00 | Window Closed / Lapsed |