Patent EP0461791A1 successfully refreshed from Google Patents.
US3233687A
Expired / Lapsed
US
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Assignee: Individual
•
Filing: 1963-03-22
•
Granted: 1966-02-08
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Expires: 1983-03-22
Abstract
No abstract record available.
Inventors
- 👤 Grimes Homer Jay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:34
CPC Classifications
E; E01; E01C; E01C23/00; E01C23/06; E01C23/12; E01C23/122; E01C23/124; E02; E02F; E02F3/00; E02F3/04; E02F3/96; E02F3/961
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
183 words
IN COMBINATION, A SUPPORT, A BOOM PIVOTED AT ITS REAR END OF THE SUPPORT, A BUCKET PIVOTED ON THE FORWARD END OF THE BOOM, MEANS FOR TILTING THE BUCKET EXTENDING BETWEEN AND PIVOTED TO THE SUPPORT AND THE BUCKET, SAID MEANS ALSO SERVING TO RAISE AND LOWER THE BOOM, ARM MEANS PIVOTED AT THE REAR END OF SAID BUCKET AND NORMALLY EXTENDING FORWARDLY THEREOF, A WINCH ASSEMBLY MOUNTED ON SAID ARM MEANS AT THE FORWARD END THEREOF, SAID ASSEMBLY COMPRISING A STATIONARY TRANSVERSE SHAFT, A DURM ROTATABLY CIRCUMPOSED ON SAID SHAFT, A CABLE WOUND ON AND FIXED AT ONE END TO SAID DRUM, A DROP HAMMER SECURED ON THE OTHER END OF THE CABLE, SPRING MEANS ACTING BETWEEN THE SHAFT AND THE DRUM, SPRING-PRESSED BRAKE MEANS MOUNTED ON THE SHAFT AND NORMALLY HAVING BRAKE APPLICATION TO THE DRUM, MEANS FOR RELEASING THE BRAKE MEANS SO AS TO PERMIT THE HAMMER TO FALL AND TO ROTATE THE DRUM ON THE SHAFT, SAID SPRING MEANS BEING ARRANGED TO BE TENSIONED BY THE FALL OF THE HAMMER SO AS TO KEEP BOOM IS LOWERED AND RAISED.
Claim 2
Dependent Claim
183 words
IN COMBINATION, A SUPPORT, A BOOM PIVOTED AT ITS REAR END OF THE SUPPORT, A BUCKET PIVOTED ON THE FORWARD END OF THE BOOM, MEANS FOR TILTING THE BUCKET EXTENDING BETWEEN AND PIVOTED TO THE SUPPORT AND THE BUCKET, SAID MEANS ALSO SERVING TO RAISE AND LOWER THE BOOM, ARM MEANS PIVOTED AT THE REAR END OF SAID BUCKET AND NORMALLY EXTENDING FORWARDLY THEREOF, A WINCH ASSEMBLY MOUNTED ON SAID ARM MEANS AT THE FORWARD END THEREOF, SAID ASSEMBLY COMPRISING A STATIONARY TRANSVERSE SHAFT, A DURM ROTATABLY CIRCUMPOSED ON SAID SHAFT, A CABLE WOUND ON AND FIXED AT ONE END TO SAID DRUM, A DROP HAMMER SECURED ON THE OTHER END OF THE CABLE, SPRING MEANS ACTING BETWEEN THE SHAFT AND THE DRUM, SPRING-PRESSED BRAKE MEANS MOUNTED ON THE SHAFT AND NORMALLY HAVING BRAKE APPLICATION TO THE DRUM, MEANS FOR RELEASING THE BRAKE MEANS SO AS TO PERMIT THE HAMMER TO FALL AND TO ROTATE THE DRUM ON THE SHAFT, SAID SPRING MEANS BEING ARRANGED TO BE TENSIONED BY THE FALL OF THE HAMMER SO AS TO KEEP BOOM IS LOWERED AND RAISED.
References Cited (Backward Citations)
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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) | 1969-02-07 | 1969-08-09 | 1970-02-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-07 | 1973-08-09 | 1974-02-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-07 | 1977-08-09 | 1978-02-08 | $7700.00 | Window Closed / Lapsed |