US3597560A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric switch with releasable screw-threaded spring charging means
Assignee: Empire Switchboard Co Inc
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Filing: 1969-07-22
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Granted: 1971-08-03
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Expires: 1989-07-22
Abstract
Abstract A normally manually operable electric switch is provided with stored energy mechanism which can be remotely controlled to open the switch without interfering with the direct manual operation to open or close the switch. The stored energy mechanism consists of a threaded rod portion and releasable screw-threaded means engaging said rod portion and allowing a spring to be compressed; upon release of the releasable screw-threaded means, the spring discharges. The stored energy mechanism is manually operable to render it potentially operable to open the switch automatically by remote control and provision is made to render said mechanism inoperable when said remote control is not desired.
Inventors
- 👤 Alexander R Norden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:38
CPC Classifications
H; H01; H01H; H01H3/00; H01H3/22; H01H3/30; H01H3/54; H01H3/58; H01H2003/3089; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19642; Y10T74/19698; Y10T74/19702; Y10T74/19735
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
195 words
An electric switch comprising, a stationary contact member, a companion movable contact member, a fuse associated with one of said contact members, mechanism coupled to said movable contact member for opening and closing the switch manually operable means for normally actuating said mechanism to open and close the switch releasably coupled to said mechanism and means operable independently of said manually operable means to actuate said mechanism to open said switch after it is closed by actuation of said mechanism by said manually operable means said independently operable means comprising rotary screw-threaded means, spring means which is stressed by rotation induced longitudinal movement of said screw-threaded means in one direction coupled to said mechanism for rendering it potentially operable to actuate said switch opening mechanism, said spring means being coupled to said screw-threaded means for biasing said screw-threaded means for longitudinal movement in a direction opposite to said one direction, and means coupled to said screw-threaded means for releasably preventing nonrotary longitudinal movement of the screw-threaded means in said opposite direction and permitting said longitudinal movement of said screw-threaded means in said opposite direction by saId spring means for actuation of said switch opening mechanism.
Claim 2
Dependent Claim
195 words
An electric switch comprising, a stationary contact member, a companion movable contact member, a fuse associated with one of said contact members, mechanism coupled to said movable contact member for opening and closing the switch manually operable means for normally actuating said mechanism to open and close the switch releasably coupled to said mechanism and means operable independently of said manually operable means to actuate said mechanism to open said switch after it is closed by actuation of said mechanism by said manually operable means said independently operable means comprising rotary screw-threaded means, spring means which is stressed by rotation induced longitudinal movement of said screw-threaded means in one direction coupled to said mechanism for rendering it potentially operable to actuate said switch opening mechanism, said spring means being coupled to said screw-threaded means for biasing said screw-threaded means for longitudinal movement in a direction opposite to said one direction, and means coupled to said screw-threaded means for releasably preventing nonrotary longitudinal movement of the screw-threaded means in said opposite direction and permitting said longitudinal movement of said screw-threaded means in said opposite direction by saId spring means for actuation of said switch opening mechanism.
Claim 3
Dependent Claim
123 words
An electric switch comprising switch closing mechanism and switch opening mechanism, means to actuate said switch opening mechanism comprising rotary screw-threaded means, spring means which is stressed by rotation-induced longitudinal movement of said screw-threaded means in one direction coupled to said mechanism for rendering it potentially operable to actuate said switch opening mechanism, said spring means being coupled to said screw-threaded means for biasing said screw-threaded means for longitudinal movement in a direction opposite to said one direction, and means coupled to said screw-threaded means for releasably preventing nonrotary longitudinal movement of the screw-threaded means in said opposite direction and permitting said longitudinal movement of said screw-threaded means in said opposite direction by said spring means for actuation of said switch opening mechanism.
Claim 4
Dependent Claim
123 words
An electric switch comprising switch closing mechanism and switch opening mechanism, means to actuate said switch opening mechanism comprising rotary screw-threaded means, spring means which is stressed by rotation-induced longitudinal movement of said screw-threaded means in one direction coupled to said mechanism for rendering it potentially operable to actuate said switch opening mechanism, said spring means being coupled to said screw-threaded means for biasing said screw-threaded means for longitudinal movement in a direction opposite to said one direction, and means coupled to said screw-threaded means for releasably preventing nonrotary longitudinal movement of the screw-threaded means in said opposite direction and permitting said longitudinal movement of said screw-threaded means in said opposite direction by said spring means for actuation of said switch opening mechanism.
Claim 5
Dependent Claim
50 words
An electric switch according to claim 2, wherein said screw-threaded means comprises a screw-threaded rod, the companion confronting sides of rib-defining grooves of the threads defining an obtuse angle therebetween, a split nut coupled to said threaded rod and releasable therefrom to permit said nonrotary longitudinal movement of said rod.
Claim 6
Dependent Claim
50 words
An electric switch according to claim 1 wherein said screw-threaded means comprises a screw-threaded rod, the companion confronting sides of rib-defining grooves of the threads defining an obtuse angle therebetween, a split nut coupled to said threaded rod and releasable therefrom to permit said nonrotary longitudinal movement of said rod.
Claim 7
Dependent Claim
48 words
An electric switch according to claim 3, wherein said split nut comprises two parts, a pivot on which said parts are pivotally mounted for engagement with and disengagement from said rod, and means for moving said parts of the nut into and out of engagement with said rod.
Claim 8
Dependent Claim
45 words
An electric switch according to claim 5 wherein the means for moving said parts of the nut into engagement with said rod comprising manually movable means releasably coupled to said parts of the nut and movable to a projected position and to a retracted position.
Claim 9
Dependent Claim
46 words
An electric switch according to claim 5 wherein the means for moving said parts of the nut into engagement with said rod comprises camming means releasably coupled to one of said parts of the nut and comprising a manually operable means for actuating said camming means.
Claim 10
Dependent Claim
46 words
An electric switch according to claim 5, wherein the means for moving the split nut out of engagement with said rod comprises said stressed spring acting on said rod when said movable means which is releasably coupled to the nut is moved to a retracted position.
Claim 11
Dependent Claim
86 words
Stored energy mechanism comprising, longitudinally movable screw means, spring means stressed by rotation-induced longitudinal movement of said screw means in one direction, said spring means being coupled to said screw means for biasing said screw means for longitudinal movement in a direction opposite to said one direction, and releasable means coupled to said screw means for releasably preventing nonrotary longitudinal movement of the screw means in said opposite direction and permitting said longitudinal movement of said screw means in said opposite direction by said spring means.
Claim 12
Dependent Claim
86 words
Stored energy mechanism comprising, longitudinally movable screw means, spring means stressed by rotation-induced longitudinal movement of said screw means in one direction, said spring means being coupled to said screw means for biasing said screw means for longitudinal movement in a direction opposite to said one direction, and releasable means coupled to said screw means for releasably preventing nonrotary longitudinal movement of the screw means in said opposite direction and permitting said longitudinal movement of said screw means in said opposite direction by said spring means.
Claim 13
Dependent Claim
38 words
Stored energy mechanism according to claim 9, wherein said screw-threaded means comprises a screw-threaded rod and said releasable means comprising a split nut having separable parts disengageable from said rod to permit said longitudinal movement of said rod.
Claim 14
Dependent Claim
26 words
Stored energy mechanism according to claim 10 wherein the companion confronting sides of rib-defining grooves of the threads of said rod define an obtuse angle therebetween.
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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) | 1974-08-02 | 1975-02-01 | 1975-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-02 | 1979-02-01 | 1979-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-02 | 1983-02-01 | 1983-08-03 | $7700.00 | Window Closed / Lapsed |