Patent US3330490A successfully refreshed from Google Patents.
US3330490A
Expired / Lapsed
US
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Sand or gravel treating machine
Assignee: Individual
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Filing: 1964-05-22
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Granted: 1967-07-11
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Expires: 1984-05-22
Abstract
No abstract record available.
Inventors
- 👤 Jr Daniel M Cowher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:30
CPC Classifications
B; B02; B02C; B02C1/00; B02C1/02; B02C1/04; Y; Y10; Y10S; Y10S241/00; Y10S241/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
163 words
A SAND AND GRAVEL TREATING DEVICE COMPRISING A SUPPORTING FRAME, A PAIR OF CRUSHER PLATES POSITIONED TRANSVERSELY OF THE FRAME IN SPACED RELATION, EACH OF SAID CRUSHER PLATES HAVING AN UPPER ANGULAR PORTION AND A LOWER VERTICALLY DISPOSED PORTION, ONE OF SAID CRUSHER PLATES HAVING RESILIENT MEANS NORMALLY HOLDING THE SAME IN A FIRST POSITION, SAID CRUSHER PLATE HAVING A RESILIENT CRUSHER PAD ON SAID LOWER VERTICAL PORTION THEREOF IN OPPOSITELY DISPOSED RELATION TO SAID RESILIENT SUPPORTING MEANS, THE OTHER OF SAID CRUSHER PLATES HAVING A RESILIENT CRUSHER PAD ON SAID LOWER VERTICAL PORTION THEREOF IN ABUTTING FACE TO FACE RELATION TO THE RESILIENT CRUSHER PAD ON SAID FIRST CRUSHER PLATE, A DEVICE ON SAID FRAME FOR IMPARTING RECIPROCAL MOVEMENT TO SAID LAST-MENTIONED CRUSHER PLATE AND ARRANGED TO MOVE THE SAME FROM A POSITION SPACED WITH RESPECT TO SAID FIRST CRUSHER PLATE TO A SECOND POSITION WITH SAID RESILIENT CRUSHER PADS IN CONTACTING RELATION TO ONE ANOTHER THROUGHOUT THEIR ENTIRE OPPOSED SURFACE AREAS.
Claim 2
Dependent Claim
163 words
A SAND AND GRAVEL TREATING DEVICE COMPRISING A SUPPORTING FRAME, A PAIR OF CRUSHER PLATES POSITIONED TRANSVERSELY OF THE FRAME IN SPACED RELATION, EACH OF SAID CRUSHER PLATES HAVING AN UPPER ANGULAR PORTION AND A LOWER VERTICALLY DISPOSED PORTION, ONE OF SAID CRUSHER PLATES HAVING RESILIENT MEANS NORMALLY HOLDING THE SAME IN A FIRST POSITION, SAID CRUSHER PLATE HAVING A RESILIENT CRUSHER PAD ON SAID LOWER VERTICAL PORTION THEREOF IN OPPOSITELY DISPOSED RELATION TO SAID RESILIENT SUPPORTING MEANS, THE OTHER OF SAID CRUSHER PLATES HAVING A RESILIENT CRUSHER PAD ON SAID LOWER VERTICAL PORTION THEREOF IN ABUTTING FACE TO FACE RELATION TO THE RESILIENT CRUSHER PAD ON SAID FIRST CRUSHER PLATE, A DEVICE ON SAID FRAME FOR IMPARTING RECIPROCAL MOVEMENT TO SAID LAST-MENTIONED CRUSHER PLATE AND ARRANGED TO MOVE THE SAME FROM A POSITION SPACED WITH RESPECT TO SAID FIRST CRUSHER PLATE TO A SECOND POSITION WITH SAID RESILIENT CRUSHER PADS IN CONTACTING RELATION TO ONE ANOTHER THROUGHOUT THEIR ENTIRE OPPOSED SURFACE AREAS.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-07-10 | 1971-01-09 | 1971-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-10 | 1975-01-09 | 1975-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-10 | 1979-01-09 | 1979-07-11 | $7700.00 | Window Closed / Lapsed |