US3290931A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Weight sensing crane hook
Assignee: Girling Ltd
•
Filing: 1963-10-30
•
Granted: 1966-12-13
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Expires: 1983-10-30
Abstract
No abstract record available.
Inventors
- 👤 Fowkes Ronald
- 👤 Boadle Campbell Dean
- 👤 Clamp David Warwick Lloyd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 05:37
CPC Classifications
G; G01; G01G; G01G19/00; G01G19/14; G01G19/18; B; B66; B66C; B66C1/00; B66C1/10; B66C1/22; B66C1/34; B66C1/40; G01G7/00; G01G7/02; G01G7/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
135 words
A FALLING BLOCK FOR A CRANE COMPRISING A SHEAVE RUNNING ON A HOUSING CABLE, A PAIR OF SIDE PLATES, A CRANE HOOK SUPPORTED FROM THE SHEAVE BETWEEN SAID SIDE PLATES, WEIGHT-CARRYING MEMBERS HOUSED IN RECESSED IN SAID PLATES, AND FORMING LOAD BEARING CONNECTIONS BETWEEN SAID SHEAVE AND SAID CRANE HOOK, LOAD-LIMITING MEANS CARRIED BY SAID SIDE PLATES AND OPERATIVE TO PREVENT OVERLOADING OF SAID WEIGHT-CARRYING MEMBERS, LOAD SENSING MEANS IN EACH WEIGHT-CARRYING MEMBER CARRIED IN A GAP ADJACENT A PORTION OF REDUCED CROSS-SECTION, THE LOAD SENSING MEANS BEING CAPABLE OF MEASURING THE LOAD SUPPORTED AS A FUNCTION OF THE ELECTRIC DEFORMATION UNDER LOAD OF SAID PORTIONS OF THE WEIGHT-CARRYING MEMBERS, A RADIO-FREQUENCY TRANSMITTER MOUNTED IN THE FALLING BLOCK AND COUPLED TO SAID LOAD SENSING MEANS FOR TRANSMITTING A RADIO SIGNAL CORRESPODING TO THE LOAD SUPPORTED.
Claim 2
Dependent Claim
135 words
A FALLING BLOCK FOR A CRANE COMPRISING A SHEAVE RUNNING ON A HOUSING CABLE, A PAIR OF SIDE PLATES, A CRANE HOOK SUPPORTED FROM THE SHEAVE BETWEEN SAID SIDE PLATES, WEIGHT-CARRYING MEMBERS HOUSED IN RECESSED IN SAID PLATES, AND FORMING LOAD BEARING CONNECTIONS BETWEEN SAID SHEAVE AND SAID CRANE HOOK, LOAD-LIMITING MEANS CARRIED BY SAID SIDE PLATES AND OPERATIVE TO PREVENT OVERLOADING OF SAID WEIGHT-CARRYING MEMBERS, LOAD SENSING MEANS IN EACH WEIGHT-CARRYING MEMBER CARRIED IN A GAP ADJACENT A PORTION OF REDUCED CROSS-SECTION, THE LOAD SENSING MEANS BEING CAPABLE OF MEASURING THE LOAD SUPPORTED AS A FUNCTION OF THE ELECTRIC DEFORMATION UNDER LOAD OF SAID PORTIONS OF THE WEIGHT-CARRYING MEMBERS, A RADIO-FREQUENCY TRANSMITTER MOUNTED IN THE FALLING BLOCK AND COUPLED TO SAID LOAD SENSING MEANS FOR TRANSMITTING A RADIO SIGNAL CORRESPODING TO THE LOAD SUPPORTED.
References Cited (Backward Citations)
US2555355A
Cited
US2667626A
Cited
DE865822C
Cited
US2756411A
Cited
US2820624A
Cited
US3081625A
Cited
US3095057A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-12-12 | 1970-06-13 | 1970-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-12 | 1974-06-13 | 1974-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-12 | 1978-06-13 | 1978-12-13 | $7700.00 | Window Closed / Lapsed |