Patent US4941214A successfully refreshed from Google Patents.
Patent US3227420A successfully refreshed from Google Patents.
US3227420A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for moving loads
Assignee: Individual
•
Filing: 1962-09-04
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Granted: 1966-01-04
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Expires: 1982-09-04
Abstract
No abstract record available.
Inventors
- 👤 Frederick L Scott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 19:22
CPC Classifications
B; B66; B66D; B66D1/00; B66D1/02; B66D1/12; B66D2700/00; B66D2700/01; B66D2700/0125; B66D2700/0141; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19642; Y10T74/19647; Y10T74/19651
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
161 words
A HOIST APPARATUS COMPRISING IN COMBINATION: AN ELONGATED, FLEXIBLE FRICTION-DRIVABLE TAPE HAVING OPPOSED SURFACES WHICH PROVIDE GRIPPING THEREON, A FIRST ROTATABLE MEMBER HAVING AN OUTER PREIPHERY OVER WHICH SAID TAPE IS PASSED TO PROVIDE A SUBSTANTIAL PERIPHERAL WRAP EFFECTING A DRIVING ACTION BETWEEN SAID TAPE AND FIRST ROTATABLE MEMBER, A SECOND ROTATABLE MEMBER OPPOSING SAID FIRST ROTATABLE MEMBER AND ALSO HAVING A SUBSTANTIAL WRAP OVER ITS OUTER PERIPHERY BY SAID TAPE AND FORMING, TOGETHER WITH SAID FIRST ROTATABLE MEMBER, A DRIVING NIP WHICH GRIPS SAID TAPE THEREBETWEEN AND PRODUCES A FRICTIONAL DRIVING FORCE CONTROLLING THE TENSILE FORCE EFFORT COMMUNICATED THROUGH SAID TAPE, MEANS FOR ADJUSTABLY CONTROLLING THE SIZE OF SAID NIP TO REGULATE THE CLAMPING EFFORT ON SAID TAPE AND THEREBY DETERMINE THE FORCE COMMUNICABLE THROUGH SAID TAPE. MOTOR MEANS FOR DRIVING ONE OF SAID ROTATABLE MEMBERS, AND A TAKE-UP MEMBER FOR RECEIVING THE TAPE AS IT IS DRAWN INTO SAID APPARATUS, THEREBY MAINTAINING THE WRAP AROUND SAID SECOND ROTATABLE MEMBER.
Claim 2
Dependent Claim
161 words
A HOIST APPARATUS COMPRISING IN COMBINATION: AN ELONGATED, FLEXIBLE FRICTION-DRIVABLE TAPE HAVING OPPOSED SURFACES WHICH PROVIDE GRIPPING THEREON, A FIRST ROTATABLE MEMBER HAVING AN OUTER PREIPHERY OVER WHICH SAID TAPE IS PASSED TO PROVIDE A SUBSTANTIAL PERIPHERAL WRAP EFFECTING A DRIVING ACTION BETWEEN SAID TAPE AND FIRST ROTATABLE MEMBER, A SECOND ROTATABLE MEMBER OPPOSING SAID FIRST ROTATABLE MEMBER AND ALSO HAVING A SUBSTANTIAL WRAP OVER ITS OUTER PERIPHERY BY SAID TAPE AND FORMING, TOGETHER WITH SAID FIRST ROTATABLE MEMBER, A DRIVING NIP WHICH GRIPS SAID TAPE THEREBETWEEN AND PRODUCES A FRICTIONAL DRIVING FORCE CONTROLLING THE TENSILE FORCE EFFORT COMMUNICATED THROUGH SAID TAPE, MEANS FOR ADJUSTABLY CONTROLLING THE SIZE OF SAID NIP TO REGULATE THE CLAMPING EFFORT ON SAID TAPE AND THEREBY DETERMINE THE FORCE COMMUNICABLE THROUGH SAID TAPE. MOTOR MEANS FOR DRIVING ONE OF SAID ROTATABLE MEMBERS, AND A TAKE-UP MEMBER FOR RECEIVING THE TAPE AS IT IS DRAWN INTO SAID APPARATUS, THEREBY MAINTAINING THE WRAP AROUND SAID SECOND ROTATABLE MEMBER.
References Cited (Backward Citations)
US2363353A
Cited
US2695957A
Cited
US2907416A
Cited
US2744788A
Cited
FR1121039A
Cited
US2947516A
Cited
US2898083A
Cited
US3005621A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-01-03 | 1969-07-05 | 1970-01-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-03 | 1973-07-05 | 1974-01-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-03 | 1977-07-05 | 1978-01-04 | $7700.00 | Window Closed / Lapsed |