Patent US3097854A successfully refreshed from Google Patents.
US3097854A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shaft packing gland
Assignee: Francis Shaw and Co Manchester Ltd
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Filing: 1960-06-09
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Granted: 1963-07-16
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Expires: 1980-06-09
Abstract
No abstract record available.
Inventors
- 👤 Kaiser Herbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:32
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/16; F16J15/34; F16J15/3404; B; B29; B29B; B29B7/00; B29B7/02; B29B7/22; F16J15/3464; F16J15/3488; B29B7/06; B29B7/10; B29B7/18; B29B7/183; B29B7/74; B29B7/7476; B29B7/7495
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
127 words
A SHAFT GLAND FOR AN INTERNAL MIXER FOR RUBBER OR PLASTIC MATERIAL, SAID MIXER INCLUDING A HOUSING AND A SHAFT, SAID GLAND COMPRISING AN ELONGATED PACKING MEMBER ADAPTED TO BE SECURED TO AND TO ROTATE WITH THE SHAFT WITH ONE END DISPOSED WITHIN THE HOUSING, AN ELONGATED STATIONARY GLAND BUSH DISPOSED IN THE HOUSING SURROUNDING THE PACKING MEMBER AND SPACED THEREFROM, SAID PACKING MEMBER HAVING A HELICAL GROOVE ON ITS OUTER SURFACE, A RING OF RADIAL TEETH ON SAID ONE END OF THE PACKING MEMBER, AND RADIAL TEETH ON SAID BUSH IN FACING SPACED RELATIONSHIP WITH AND ADAPTED TO COOPERATE WITH THE TEETH ON SAID PACKING MEMBER TO GRIND AND REDUCE MATERIAL PASSING BETWEEN SAID TEETH, SAID MATERIAL FLOWING OUTWARDLY BETWEEN SAID PACKING MEMBER AND SAID BUSH.
Claim 2
Dependent Claim
127 words
A SHAFT GLAND FOR AN INTERNAL MIXER FOR RUBBER OR PLASTIC MATERIAL, SAID MIXER INCLUDING A HOUSING AND A SHAFT, SAID GLAND COMPRISING AN ELONGATED PACKING MEMBER ADAPTED TO BE SECURED TO AND TO ROTATE WITH THE SHAFT WITH ONE END DISPOSED WITHIN THE HOUSING, AN ELONGATED STATIONARY GLAND BUSH DISPOSED IN THE HOUSING SURROUNDING THE PACKING MEMBER AND SPACED THEREFROM, SAID PACKING MEMBER HAVING A HELICAL GROOVE ON ITS OUTER SURFACE, A RING OF RADIAL TEETH ON SAID ONE END OF THE PACKING MEMBER, AND RADIAL TEETH ON SAID BUSH IN FACING SPACED RELATIONSHIP WITH AND ADAPTED TO COOPERATE WITH THE TEETH ON SAID PACKING MEMBER TO GRIND AND REDUCE MATERIAL PASSING BETWEEN SAID TEETH, SAID MATERIAL FLOWING OUTWARDLY BETWEEN SAID PACKING MEMBER AND SAID BUSH.
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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) | 1966-07-15 | 1967-01-14 | 1967-07-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-07-15 | 1971-01-14 | 1971-07-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-07-15 | 1975-01-14 | 1975-07-16 | $7700.00 | Window Closed / Lapsed |