US3207449A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rock crusher with braked head
Assignee: Cedarapids Inc
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Filing: 1962-12-21
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Granted: 1965-09-21
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Expires: 1982-12-21
Abstract
No abstract record available.
Inventors
- 👤 Louis W Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:49
CPC Classifications
B; B02; B02C; B02C2/00; B02C2/02; B02C2/04; B02C2/047
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
66 words
IN A ROCK CRUSHER OF THE TYPE HAVING A BOWL AND A HEAD COOPERABLE WITH THE BOWL IN A CRUSHING OPERATION, ROTARY MEANS BENEATH THE HEAD ROTATABLY SUPPORTING THE HEAD AND OPERABLE UPON ROTATION TO ACTUATE SAID HEAD, MEANS EXTENDING UPWARDLY THROUGH SAID ROTARY MEANS AND OPERABLE WHEN ACTUATED FOR POSITIVELY PREVENTING ANY ROTARY MOVEMENT OF SAID HEAD IN THE SAME DIRECTION AS SAID ROTARY MEANS,
Claim 2
Dependent Claim
66 words
IN A ROCK CRUSHER OF THE TYPE HAVING A BOWL AND A HEAD COOPERABLE WITH THE BOWL IN A CRUSHING OPERATION, ROTARY MEANS BENEATH THE HEAD ROTATABLY SUPPORTING THE HEAD AND OPERABLE UPON ROTATION TO ACTUATE SAID HEAD, MEANS EXTENDING UPWARDLY THROUGH SAID ROTARY MEANS AND OPERABLE WHEN ACTUATED FOR POSITIVELY PREVENTING ANY ROTARY MOVEMENT OF SAID HEAD IN THE SAME DIRECTION AS SAID ROTARY MEANS,
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) | 1968-09-20 | 1969-03-22 | 1969-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-20 | 1973-03-22 | 1973-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-20 | 1977-03-22 | 1977-09-21 | $7700.00 | Window Closed / Lapsed |