US3244405A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cable hoist brake
Assignee: Aro Corp
•
Filing: 1964-02-17
•
Granted: 1966-04-05
•
Expires: 1984-02-17
Abstract
No abstract record available.
Inventors
- 👤 John R Hanning
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 00:19
CPC Classifications
B; B66; B66D; B66D3/00; B66D3/18; B66D5/00; B66D2700/00; B66D2700/02; B66D2700/026; B66D2700/03
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
138 words
FOR USE WITH A MOTOR OPERATED HOIST OF THE TYPE HAVING BRAKE MECHANISM COMPRISING A FRICTION NUT AND SCREW CONNECTION FROM A MOTOR TO THE DRUM OF THE HOIST, THE NUT SCREW THEREOF HAVING OPPOSED FLANGES WHICH APPROACH EACH OTHER WHEN THE MOTOR OPERATES FOR RAISING A LOAD, A RATCHET DISC BETWEEN SAID FLANGES, AND A PAWL COACTING THEREWITH AND OPERABLE TO PREVENT RETROGRADE ROTATION OF SAID RATCHET DISC; MEANS NORMALLY ARRESTING ROTATION OF THAT PORTION OF SAID FRICTION NUT AND SCREWS CONNECTION LOCATED BETWEEN SAID RATCHET DISC AND THE MOTOR, THE MOTOR BEING FLUID PRESSURE OPERABLE AND REVERSIBLE, ACTUATABLE MEANS FOR RELEASING SAID ROTATION ARRESTING MEANS, SAID ACTUATABLE MEANS BEING FLUID PRESSURE OPERABLE, AND MEANS FOR SUPPLYING FLUID PRESSURE TO SAID ACTUATABLE MEANS WHENEVER FLUID PRESSURE IS SUPPLIED TO THE MOTOR FOR ROTATING IT IN EITHER DIRECTION.
Claim 2
Dependent Claim
138 words
FOR USE WITH A MOTOR OPERATED HOIST OF THE TYPE HAVING BRAKE MECHANISM COMPRISING A FRICTION NUT AND SCREW CONNECTION FROM A MOTOR TO THE DRUM OF THE HOIST, THE NUT SCREW THEREOF HAVING OPPOSED FLANGES WHICH APPROACH EACH OTHER WHEN THE MOTOR OPERATES FOR RAISING A LOAD, A RATCHET DISC BETWEEN SAID FLANGES, AND A PAWL COACTING THEREWITH AND OPERABLE TO PREVENT RETROGRADE ROTATION OF SAID RATCHET DISC; MEANS NORMALLY ARRESTING ROTATION OF THAT PORTION OF SAID FRICTION NUT AND SCREWS CONNECTION LOCATED BETWEEN SAID RATCHET DISC AND THE MOTOR, THE MOTOR BEING FLUID PRESSURE OPERABLE AND REVERSIBLE, ACTUATABLE MEANS FOR RELEASING SAID ROTATION ARRESTING MEANS, SAID ACTUATABLE MEANS BEING FLUID PRESSURE OPERABLE, AND MEANS FOR SUPPLYING FLUID PRESSURE TO SAID ACTUATABLE MEANS WHENEVER FLUID PRESSURE IS SUPPLIED TO THE MOTOR FOR ROTATING IT IN EITHER DIRECTION.
References Cited (Backward Citations)
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Cited
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US2695086A
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US2656736A
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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) | 1969-04-04 | 1969-10-04 | 1970-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-04 | 1973-10-04 | 1974-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-04 | 1977-10-04 | 1978-04-05 | $7700.00 | Window Closed / Lapsed |