Patent US508389A successfully refreshed from Google Patents.
Patent US2028318A successfully refreshed from Google Patents.
Patent DE218341C successfully refreshed from Google Patents.
US3663773A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Switchgear draw-out apparatus with clutch interlock
Assignee: General Electric Co
•
Filing: 1970-11-09
•
Granted: 1972-05-16
•
Expires: 1990-11-09
Abstract
Abstract An assembly comprising an outer and an inner frame, the inner frame riding on rail portions and being cammed by a mechanism operated by a side mounted handle. Mating electrical contacts are provided on the inner and outer frames. Mechanical interlocks are provided to guard against breaking or making the load current path at the mating connectors. The interlocks disconnect the side mounted handle from the camming mechanism if electrical contacts in an electrical switching device carried by the inner frame are in the closed position.
Inventors
- 👤 David B Powell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 02:42
CPC Classifications
H; H02; H02B; H02B11/00; H02B11/12; H02B11/127; H02B11/133
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
250 words
A draw-out mechanism for an electrical control device comprising: a. a stationary chassis unit; b. a carriage unit supported by said stationary chassis unit; c. a slide mounting assembly carried by said stationary chassis unit; d. manually operable propelling means for moving said carriage unit along said slide mounting assembly, said manually operable propelling means including connecting means movable between a first position in which said means serves to transmit force from said manually operable propelling means to said carriage unit and a second position in which said means does noT transmit force from said manually operable propelling means to said carriage unit; and e. an electrical control device supported on said carriage unit and having a plurality of contacts movable between ''''open'''' and ''''closed'''' circuit position and operating means for operating said movable contacts; f. means actuated by said operating means for said movable contacts and engaging said connecting means of said manually operable means and moving said connecting means to said second position when said control device contacts are in said ''''closed'''' position, g. means moving said connecting means to said first position in response to movement of said control device contacts to said ''''off'''' position, and h. said manually operable propelling means for moving said carriage unit comprising a lever pivotally mounted on said chassis unit and cam plate pivotally mounted on said chassis unit, said connecting means comprising a member carried by said lever and movable into and out of engaging relation with said cam plate.
Claim 2
Dependent Claim
250 words
A draw-out mechanism for an electrical control device comprising: a. a stationary chassis unit; b. a carriage unit supported by said stationary chassis unit; c. a slide mounting assembly carried by said stationary chassis unit; d. manually operable propelling means for moving said carriage unit along said slide mounting assembly, said manually operable propelling means including connecting means movable between a first position in which said means serves to transmit force from said manually operable propelling means to said carriage unit and a second position in which said means does noT transmit force from said manually operable propelling means to said carriage unit; and e. an electrical control device supported on said carriage unit and having a plurality of contacts movable between ''''open'''' and ''''closed'''' circuit position and operating means for operating said movable contacts; f. means actuated by said operating means for said movable contacts and engaging said connecting means of said manually operable means and moving said connecting means to said second position when said control device contacts are in said ''''closed'''' position, g. means moving said connecting means to said first position in response to movement of said control device contacts to said ''''off'''' position, and h. said manually operable propelling means for moving said carriage unit comprising a lever pivotally mounted on said chassis unit and cam plate pivotally mounted on said chassis unit, said connecting means comprising a member carried by said lever and movable into and out of engaging relation with said cam plate.
Claim 3
Dependent Claim
70 words
A draw-out mechanism as set forth in claim 1, said mechanism also comprising a. means movably mounting said slide mounting assembly for movement between an operative and a retracted position, and b. means engaged by said slide mounting assembly in said retracted position restraining said connecting means in said second position in which said connecting means does not transmit force from said manually operable propelling means to said carriage unit.
References Cited (Backward Citations)
US2711452A
Cited
US3005064A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-05-16 | 1975-11-15 | 1976-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-16 | 1979-11-15 | 1980-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-16 | 1983-11-15 | 1984-05-16 | $7700.00 | Window Closed / Lapsed |