Patent US3140834A successfully refreshed from Google Patents.
US3140834A
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Seal for gyratory crushers
Assignee: Nordberg Manufacturing Co
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Filing: 1961-11-14
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Granted: 1964-07-14
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Expires: 1981-11-14
Abstract
No abstract record available.
Inventors
- 👤 Loren G Symons
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:27
CPC Classifications
B; B02; B02C; B02C2/00; B02C2/02; B02C2/04; B02C2/045
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
78 words
IN COMBINATION, IN A CRUSHER OF THE TYPE WHICH INCLUDES A CIRCUMFERENTIAL MAIN FRAME AND A HEAD WITHIN THE FRAME AND MEANS FOR GYRATING IT, A SUPPORT FOR THE HEAD, AND A FLOATING CLOSURE BETWEEN THE HEAD AND THE SUPPORT WHICH INCLUDES A FLEXIBLE, COMPRESSIBLE ANNULUS CONTACTING THE SUPPORT AND A MOVABLE SEALING MEMBER SLIDABLE IN THE HEAD, SAID SEALING MEMBER ABUTTING AND SURROUNDING SAID ANNULUS AND BEING OUT OF CONTACT, EXCEPT THROUGH SAID ANNULUS, WITH THE SUPPORT.
Claim 2
Dependent Claim
78 words
IN COMBINATION, IN A CRUSHER OF THE TYPE WHICH INCLUDES A CIRCUMFERENTIAL MAIN FRAME AND A HEAD WITHIN THE FRAME AND MEANS FOR GYRATING IT, A SUPPORT FOR THE HEAD, AND A FLOATING CLOSURE BETWEEN THE HEAD AND THE SUPPORT WHICH INCLUDES A FLEXIBLE, COMPRESSIBLE ANNULUS CONTACTING THE SUPPORT AND A MOVABLE SEALING MEMBER SLIDABLE IN THE HEAD, SAID SEALING MEMBER ABUTTING AND SURROUNDING SAID ANNULUS AND BEING OUT OF CONTACT, EXCEPT THROUGH SAID ANNULUS, WITH THE SUPPORT.
References Cited (Backward Citations)
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US2916219A
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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) | 1967-07-14 | 1968-01-13 | 1968-07-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-07-14 | 1972-01-13 | 1972-07-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-07-14 | 1976-01-13 | 1976-07-14 | $7700.00 | Window Closed / Lapsed |