US3365076A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for stabilizing the hook swing of a crane boom
Assignee: CLYDE IRON WORKS Inc
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Filing: 1966-10-13
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Granted: 1968-01-23
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Expires: 1986-10-13
Abstract
No abstract record available.
Inventors
- 👤 Lee C Mcmanus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 11:34
CPC Classifications
B; B66; B66C; B66C13/00; B66C13/04; B66C13/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
93 words
A STABILIZING DEVICE FOR DAMPING THE SWINGING MOVEMENT OF A CRANE HOOK BY ROTATING THE BOOM OF THE CRANE, SAID DEVICE COMPRISING: (A) A PRIMARY PENDULUM ADAPTED TO BE PIVOTED TO SAID BOOM AS A VERTICAL REFERENCE AND TO SWING IN OPPOSITE DIRECTIONS, (B) A SECONDARY PENDULUM PIVOTED TO SAID BOOM TO SWING IN THE SAME DIRECTIONS, (C) ONE OF SAID PENDULUMS BEING SHORTER THAN THE OTHER TO PRODUCE RELATIVE MOVEMENT THEREBETWEEN, AND (D) ACTUATING MEANS DEPENDING UPON THE RELATIVE MOVEMENT OF SAID PENDULUMS FOR CONTROLLING THE HOOK SWING MOVEMENT OF THE BOOM.
Claim 2
Dependent Claim
93 words
A STABILIZING DEVICE FOR DAMPING THE SWINGING MOVEMENT OF A CRANE HOOK BY ROTATING THE BOOM OF THE CRANE, SAID DEVICE COMPRISING: (A) A PRIMARY PENDULUM ADAPTED TO BE PIVOTED TO SAID BOOM AS A VERTICAL REFERENCE AND TO SWING IN OPPOSITE DIRECTIONS, (B) A SECONDARY PENDULUM PIVOTED TO SAID BOOM TO SWING IN THE SAME DIRECTIONS, (C) ONE OF SAID PENDULUMS BEING SHORTER THAN THE OTHER TO PRODUCE RELATIVE MOVEMENT THEREBETWEEN, AND (D) ACTUATING MEANS DEPENDING UPON THE RELATIVE MOVEMENT OF SAID PENDULUMS FOR CONTROLLING THE HOOK SWING MOVEMENT OF THE BOOM.
References Cited (Backward Citations)
US2164128A
Cited
US2772411A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-01-22 | 1971-07-24 | 1972-01-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-01-22 | 1975-07-24 | 1976-01-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-01-22 | 1979-07-24 | 1980-01-23 | $7700.00 | Window Closed / Lapsed |