US3224804A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic loading cargo release
Assignee: Eastern Rotorcraft Corp
•
Filing: 1963-07-25
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Granted: 1965-12-21
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Expires: 1983-07-25
Abstract
No abstract record available.
Inventors
- 👤 Harris S Campbell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 13:31
CPC Classifications
B; B66; B66C; B66C1/00; B66C1/10; B66C1/22; B66C1/34
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
134 words
A CARGO RELEASE HOOK HAVING (A) A FRAME, (B) A LOAD CARRYING BEAM PIVOTALLY MOUNTED ON SAID FRAME FOR SWINGING MOVEMENT, (C) MECHANISM FOR RELEASABLY ENGAGING SAID BEAM TO SUPPORT IT IN LOAD CARRYING POSITION INCLUDING (1) A REACTION STRUT PIVOTALLY SUPPORTED ON SAID FRAME AND HAVING A ROLLER AT ONE END, (2) A BEAM CONNECTED ARM AGAINST WHICH SAID ROLLER ENGAGES WHEN IN LOAD CARRYING POSITIONS, (3) TOGGLE LINKAGE ENGAGING SAID REACTION STRUT TO CONTROL ITS MOVEMENT, (4) AN ELECTRIC ACTUATING DEVICE MECHANICALLY ENGAGEABLE WITH THE TOGGLE LINKAGE, (D) MEANS FOR AUTOMATICALLY RELEASING SAID MECHANISM UPON REDUCTION OF THE LOAD ON SAID BEAM TO A PREDETERMINED VALUE INCLUDING (1) A SPRING LOADED ELEMENT SUPPORTED ON SAID ARM AT THE ROLLER ENGAGING LOCATION, (2) AN ELECTRICAL SWITCH HAVING ELECTRICAL CONNECTIONS TO SAID ELECTRICAL DEVICE
Claim 2
Dependent Claim
134 words
A CARGO RELEASE HOOK HAVING (A) A FRAME, (B) A LOAD CARRYING BEAM PIVOTALLY MOUNTED ON SAID FRAME FOR SWINGING MOVEMENT, (C) MECHANISM FOR RELEASABLY ENGAGING SAID BEAM TO SUPPORT IT IN LOAD CARRYING POSITION INCLUDING (1) A REACTION STRUT PIVOTALLY SUPPORTED ON SAID FRAME AND HAVING A ROLLER AT ONE END, (2) A BEAM CONNECTED ARM AGAINST WHICH SAID ROLLER ENGAGES WHEN IN LOAD CARRYING POSITIONS, (3) TOGGLE LINKAGE ENGAGING SAID REACTION STRUT TO CONTROL ITS MOVEMENT, (4) AN ELECTRIC ACTUATING DEVICE MECHANICALLY ENGAGEABLE WITH THE TOGGLE LINKAGE, (D) MEANS FOR AUTOMATICALLY RELEASING SAID MECHANISM UPON REDUCTION OF THE LOAD ON SAID BEAM TO A PREDETERMINED VALUE INCLUDING (1) A SPRING LOADED ELEMENT SUPPORTED ON SAID ARM AT THE ROLLER ENGAGING LOCATION, (2) AN ELECTRICAL SWITCH HAVING ELECTRICAL CONNECTIONS TO SAID ELECTRICAL DEVICE
References Cited (Backward Citations)
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Cited
US905576A
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US1118618A
Cited
US3068034A
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US3081121A
Cited
US3061355A
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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) | 1968-12-20 | 1969-06-21 | 1969-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-20 | 1973-06-21 | 1973-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-20 | 1977-06-21 | 1977-12-21 | $7700.00 | Window Closed / Lapsed |