Patent US4390926A successfully refreshed from Google Patents.
US4390926A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Portable switching unit
Assignee: Lexus Liting Inc
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Filing: 1981-05-01
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Granted: 1983-06-28
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Expires: 2001-05-01
Abstract
Abstract A switching apparatus contained inside box B consists of standard electrical units, and arranged in a way which is particularly advantageous for the purpose at hand. One of these units is a circuit breaker box containing two interruptible circuits, and having a mechanical reset switch. There are also a pair of magnetic contactors. Each magnetic contactor is used for switching a single conductor, and includes a pair of contact plates which are normally open so that current cannot pass through them, together with a coil which can be energized for causing the plates to close. In addition to the circuit breaker box and the magnetic contactors, there are heavy copper conductors, or buss bars, which make the necessary connections between the circuit units.
Inventors
- 👤 Randall A. Hart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:59
CPC Classifications
H; H02; H02B; H02B1/00; H02B1/26; H02B1/52
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
365 words
A remotely controlled portable heavy duty electrical switch including: a lower base plate, having two ends and corresponding feet for maintaining the base plate in an elevated position; a pair of magnetic contactors which rest on top of the lower base plate and are secured to it, each contactor having an input terminal and an output terminal, both input terminals being located at one end of said lower base plate and the output terminals being located at the other end of said lower base plate; an upper base plate disposed above the magnetic contactors and having associated sidewall means which extend downwardly towards and are secured to the lower base plate; a circuit breaker box disposed upon and secured to said upper base plate, said circuit breaker box containing two interruptible circuits and also having a mechanical reset switch on its exposed upper surface; an input terminal board carrying a set of three input terminals and secured to one end of said breaker box above said one end of said lower base plate, the first and third input terminals being connected to respective ones of said interruptible circuits; a pair of heavy duty electrical conductors each connected to a corresponding interruptible circuit at the other end of said circuit box, said conductors extending around corresponding lateral sides of said circuit box to locations beneath said input terminal board and being there connected to input terminals of corresponding magnetic contactors; a third heavy duty electrical conductor connected to the second one of said terminals on said input terminal board and extending underneath said circuit breaker box and between said magnetic contactors to the other end of said contactors; an output terminal board secured to the other end of said lower base plate and carrying at least one set of three output terminals, the first and third output terminals being connected to output ends of respective ones of said magnetic contactors, and the third output terminal being connected to said third heavy duty conductor; and each of said magnetic contactors having a normally open pair of contact plates, and coil means energizable for closing said plates so as to energize a corresponding pair of said output terminals.
Claim 2
Dependent Claim
365 words
A remotely controlled portable heavy duty electrical switch including: a lower base plate, having two ends and corresponding feet for maintaining the base plate in an elevated position; a pair of magnetic contactors which rest on top of the lower base plate and are secured to it, each contactor having an input terminal and an output terminal, both input terminals being located at one end of said lower base plate and the output terminals being located at the other end of said lower base plate; an upper base plate disposed above the magnetic contactors and having associated sidewall means which extend downwardly towards and are secured to the lower base plate; a circuit breaker box disposed upon and secured to said upper base plate, said circuit breaker box containing two interruptible circuits and also having a mechanical reset switch on its exposed upper surface; an input terminal board carrying a set of three input terminals and secured to one end of said breaker box above said one end of said lower base plate, the first and third input terminals being connected to respective ones of said interruptible circuits; a pair of heavy duty electrical conductors each connected to a corresponding interruptible circuit at the other end of said circuit box, said conductors extending around corresponding lateral sides of said circuit box to locations beneath said input terminal board and being there connected to input terminals of corresponding magnetic contactors; a third heavy duty electrical conductor connected to the second one of said terminals on said input terminal board and extending underneath said circuit breaker box and between said magnetic contactors to the other end of said contactors; an output terminal board secured to the other end of said lower base plate and carrying at least one set of three output terminals, the first and third output terminals being connected to output ends of respective ones of said magnetic contactors, and the third output terminal being connected to said third heavy duty conductor; and each of said magnetic contactors having a normally open pair of contact plates, and coil means energizable for closing said plates so as to energize a corresponding pair of said output terminals.
Claim 3
Dependent Claim
272 words
A remotely controlled portable heavy duty electrical switch comprising, in combination: a rectangular open-topped carrying box having side and end walls and a bottom wall, having a lid hingedly fastened to one side wall of said box, having latch means on the other side wall of said box manually operable for securing the lid when in the closed position, and having carrying handle means for carrying the box and contents; a pair of magnetic contactors positioned within the lower part of said box; a circuit breaker having a pair of interruptible circuits disposed within the upper part of said box, said circuit breaker having a mechanical reset switch which is exposed when the box is open; an input terminal board positioned in an opening in one wall of said box and accessible for externally connecting a power circuit thereto, said input terminal board being internally connected to said interruptible circuits of said circuit breaker; an output terminal board carried in another opening in a wall in said box and being externally accessible for connecting load circuits thereto, said output terminal board being internally connected to said magnetic contactors; conductor means connecting said magnetic contactors in series with corresponding interruptible circuits of said circuit breaker; a remote control cable normally coiled within the upper portion of said carrying box, and having control switch means on its remote end; and the inner end of said remote control cable containing conductors connectable to said magnetic contactors for controlling the operation thereof, and also containing additional conductors connectable to said input terminal board for receiving the energy by which to control and actuate said magnetic contactors.
Claim 4
Dependent Claim
272 words
A remotely controlled portable heavy duty electrical switch comprising, in combination: a rectangular open-topped carrying box having side and end walls and a bottom wall, having a lid hingedly fastened to one side wall of said box, having latch means on the other side wall of said box manually operable for securing the lid when in the closed position, and having carrying handle means for carrying the box and contents; a pair of magnetic contactors positioned within the lower part of said box; a circuit breaker having a pair of interruptible circuits disposed within the upper part of said box, said circuit breaker having a mechanical reset switch which is exposed when the box is open; an input terminal board positioned in an opening in one wall of said box and accessible for externally connecting a power circuit thereto, said input terminal board being internally connected to said interruptible circuits of said circuit breaker; an output terminal board carried in another opening in a wall in said box and being externally accessible for connecting load circuits thereto, said output terminal board being internally connected to said magnetic contactors; conductor means connecting said magnetic contactors in series with corresponding interruptible circuits of said circuit breaker; a remote control cable normally coiled within the upper portion of said carrying box, and having control switch means on its remote end; and the inner end of said remote control cable containing conductors connectable to said magnetic contactors for controlling the operation thereof, and also containing additional conductors connectable to said input terminal board for receiving the energy by which to control and actuate said magnetic contactors.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-06-27 | 1986-12-27 | 1987-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-06-27 | 1990-12-27 | 1991-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-06-27 | 1994-12-27 | 1995-06-28 | $7700.00 | Window Closed / Lapsed |