US3170643A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for crushing rock or the like including a swinging breaker bar
Assignee: Pettibone Traverse Lift LLC
•
Filing: 1962-06-15
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Granted: 1965-02-23
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Expires: 1982-06-15
Abstract
No abstract record available.
Inventors
- 👤 Albert B Hanse
- 👤 Leonard N Kint
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:36
CPC Classifications
B; B02; B02C; B02C13/00; B02C13/02; B02C13/06; B02C13/09; B02C13/095
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
115 words
AN APPARATUS FOR CRUSHING ROCK OR THE LIKE INCLUDING: A CASING HAVING A PAIR OF GENERALLY PARALLEL SIDE WALLS; AN IMPELLER MOUNTED IN SAID CASING FOR ROTATION ABOUT A GENERALLY HORIZONTAL AXIS INTERSECTING SAID SIDE WALL, AND DRIVEN IN A GIVEN DIRECTION, MEANS TO FEED ROCK TOWARD THE UPPER SIDE OF SAID IMPELLER AT A ZONE FROM WHICH IT WILL BE THROWN BOTH UPWARDLY AND IN SAID GIVEN DIRECTION; A FIXED GRATE DEVICE SECURED TO SAID WALLS AND EXTENDING THEREBETWEEN, SAID DEVICE HAVING AN IMPACTING FACE ABOVE AND GENERALLY IN SAID DIRECTION FROM SAID AXIS WITH ITS BOTTOM TERMINUS BEING SPACED FROM THE IMPELLER WHEREBY PART OF THE ROCK WOULD PASS THROUGH THE SPACE BETWEEN
Claim 2
Independent Claim
115 words
AN APPARATUS FOR CRUSHING ROCK OR THE LIKE INCLUDING: A CASING HAVING A PAIR OF GENERALLY PARALLEL SIDE WALLS; AN IMPELLER MOUNTED IN SAID CASING FOR ROTATION ABOUT A GENERALLY HORIZONTAL AXIS INTERSECTING SAID SIDE WALL, AND DRIVEN IN A GIVEN DIRECTION, MEANS TO FEED ROCK TOWARD THE UPPER SIDE OF SAID IMPELLER AT A ZONE FROM WHICH IT WILL BE THROWN BOTH UPWARDLY AND IN SAID GIVEN DIRECTION; A FIXED GRATE DEVICE SECURED TO SAID WALLS AND EXTENDING THEREBETWEEN, SAID DEVICE HAVING AN IMPACTING FACE ABOVE AND GENERALLY IN SAID DIRECTION FROM SAID AXIS WITH ITS BOTTOM TERMINUS BEING SPACED FROM THE IMPELLER WHEREBY PART OF THE ROCK WOULD PASS THROUGH THE SPACE BETWEEN
References Cited (Backward Citations)
CA564053A
Cited
US2889119A
Cited
US2767928A
Cited
DE1033491B
Cited
FR1134953A
Cited
DE1022082B
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-02-23 | 1968-08-24 | 1969-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-02-23 | 1972-08-24 | 1973-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-02-23 | 1976-08-24 | 1977-02-23 | $7700.00 | Window Closed / Lapsed |