US3679852A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spring operated making driving mechanism for circuit breaking and switching device
Assignee: Meidensha Corp
•
Filing: 1971-03-22
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Granted: 1972-07-25
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Expires: 1991-03-22
Abstract
Abstract The actuating mechanism for a circuit breaker or switch has a bar moved longitudinally by a spring. The spring is charged by a reversible electric motor which first turns an internally threaded gear on the bar to shift the gear along the bar and thereby to engage a latch on the gear with a remotely controlled mechanism, and thereafter turns the axially secured gear to shift the bar and thereby to tension the spring. The bar is moved by the spring when the mechanism releases the latch.
Inventors
- 👤 Hitoshi Himi
- 👤 Yasuhiro Shinmon
- 👤 Tokuro Teshima
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:29
CPC Classifications
H; H01; H01H; H01H3/00; H01H3/32; H01H3/40; H01H3/22; H01H3/30; H01H2003/405; Y; Y10; Y10T; Y10T74/00; Y10T74/11
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
187 words
An actuating mechanism for a circuit breaking and switching device comprising, in combination: a. a driving bar member having a longitudinal axis; b. bearing means supporting said bar member for axial movement; c. an internally threaded member carrying gear teeth and threadedly engaging said bar member for movement about said axis; d. spring means arranged for being energized by movement of said bar member in one axial direction, said spring means moving said bar member in the opposite axial direction when relaxing; e. operating means for turning said threaded member about said axis relative to said bar member, said operating means including a gear member meshing with said internally threaded member, and motor means for turning said gear member in either of two opposite directions while said gear member meshes with said internally threaded mEmber; f. latch means engageable with said threaded member for preventing axial movement of the threaded member in said opposite direction; and g. releasing means for releasing said latch means when in the engaged condition and for thereby permitting said axial movement of the threaded member and of the bar member engaged thereby.
Claim 2
Dependent Claim
187 words
An actuating mechanism for a circuit breaking and switching device comprising, in combination: a. a driving bar member having a longitudinal axis; b. bearing means supporting said bar member for axial movement; c. an internally threaded member carrying gear teeth and threadedly engaging said bar member for movement about said axis; d. spring means arranged for being energized by movement of said bar member in one axial direction, said spring means moving said bar member in the opposite axial direction when relaxing; e. operating means for turning said threaded member about said axis relative to said bar member, said operating means including a gear member meshing with said internally threaded member, and motor means for turning said gear member in either of two opposite directions while said gear member meshes with said internally threaded mEmber; f. latch means engageable with said threaded member for preventing axial movement of the threaded member in said opposite direction; and g. releasing means for releasing said latch means when in the engaged condition and for thereby permitting said axial movement of the threaded member and of the bar member engaged thereby.
Claim 3
Dependent Claim
36 words
A mechanism as set forth in claim 1, wherein said teeth are mounted on a carrier secured on said internally threaded member against relative rotation about said axis, but axially slidable on the internally threaded member.
References Cited (Backward Citations)
US3255636A
Cited
US3597560A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-07-25 | 1976-01-24 | 1976-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-25 | 1980-01-24 | 1980-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-25 | 1984-01-24 | 1984-07-25 | $7700.00 | Window Closed / Lapsed |