Patent US3647997A successfully refreshed from Google Patents.
US3647997A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Load transfer switch assembly
Assignee: Individual
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Filing: 1970-11-16
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Granted: 1972-03-07
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Expires: 1990-11-16
Abstract
Abstract An electric circuit load center for recreational vehicles equipped with a load transfer switch assembly operable to connect a utility power supply to a load and separately operable to connect a generator power supply to the load. The load transfer switch assembly has a control member operable in response to movement of separate switch handles to insure that only one power supply is connected to the load at any one time.
Inventors
- 👤 Marvin E Nerem
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 17:36
CPC Classifications
H; H01; H01H; H01H71/00; H01H71/02; H01H71/0264; H01H71/0271; H01H9/00; H01H9/20; H01H9/26; H01H2300/00; H01H2300/018
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
234 words
A load transfer switch assembly operable to connect a first power source and a second power source selectively and independently to a load comprising: a first switch means having a first operating member selectively movable to ''''on'''' and ''''off'''' positions, said first switch means adapted to be connected to the first power source and the load whereby when the first member is in the ''''on'''' position, the first power source is connected to the load, a second switch means generally longitudinally aligned with said first switch means and having a second operating member selectively movable to ''''on'''' and ''''off'''' positions, said second switch means adapted to be connected to the second power source and the load whereby when the second member is in the ''''on'''' position, the second power source is connected to the load, and longitudinally movable control means comprised of a generally Ushaped unit, having a pair of sidewalls connected with first and second top transverse walls, said top transverse walls having respective first and second transverse edges engageable with the first member and the second member, respectively, and operable to move the second member to its ''''off'''' position when the first member is moved to its ''''on'''' position and to move the first member to the ''''off'''' position when the second member is moved to its ''''on'''' position, whereby only one power source at a time is connected to the load.
Claim 2
Dependent Claim
234 words
A load transfer switch assembly operable to connect a first power source and a second power source selectively and independently to a load comprising: a first switch means having a first operating member selectively movable to ''''on'''' and ''''off'''' positions, said first switch means adapted to be connected to the first power source and the load whereby when the first member is in the ''''on'''' position, the first power source is connected to the load, a second switch means generally longitudinally aligned with said first switch means and having a second operating member selectively movable to ''''on'''' and ''''off'''' positions, said second switch means adapted to be connected to the second power source and the load whereby when the second member is in the ''''on'''' position, the second power source is connected to the load, and longitudinally movable control means comprised of a generally Ushaped unit, having a pair of sidewalls connected with first and second top transverse walls, said top transverse walls having respective first and second transverse edges engageable with the first member and the second member, respectively, and operable to move the second member to its ''''off'''' position when the first member is moved to its ''''on'''' position and to move the first member to the ''''off'''' position when the second member is moved to its ''''on'''' position, whereby only one power source at a time is connected to the load.
Claim 3
Dependent Claim
43 words
The switch assembly of claim 1 wherein: the first switch means and the second switch means are circuit breakers having operating handles, said control means located between the operating handles of the circuit breakers to control the relative positions of the operating handles.
Claim 4
Dependent Claim
20 words
The switch assembly of claim 2 including: means mounting the U-shaped unit for general longitudinal movement between the operating handles.
Claim 5
Dependent Claim
29 words
The switch assembly of claim 3 wherein: the mounting means comprises a block mounted on the circuit breakers and guide means movably connecting the U-shaped unit with the block.
Claim 6
Dependent Claim
42 words
The switch assembly of claim 1 wherein: the first switch means and the second switch means each have an elongated casing, said U-shaped unit slideably positioned on the elongated casings of the switch means between the operating members of the switch means.
Claim 7
Dependent Claim
22 words
The switch assembly of claim 5 including: means secured to at least one casing for guiding the movement of the U-shaped unit.
Claim 8
Dependent Claim
39 words
The switch assembly of claim 1 wherein: the first switch means and the second switch means are longitudinally aligned circuit breakers having operating handles, said control means located between the operating handles and slideably mounted on the circuit breakers.
Claim 9
Dependent Claim
78 words
The switch assembly of claim 1 wherein: the first switch means comprise a first pair of circuit breakers having operating handles linked together, and the second switch means comprise a second pair of circuit breakers having operating handles linked together, said first pair of circuit breakers being located in longitudinal alignment with the second pair of circuit breakers, said control means having a movable member engageable with at least one operating handle on each pair of circuit breakers.
Claim 10
Dependent Claim
25 words
The switch assembly of claim 8 including: block means mounted on the circuit breakers and guide means mounting the movable means on the block means.
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) | 1975-03-07 | 1975-09-06 | 1976-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-03-07 | 1979-09-06 | 1980-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-03-07 | 1983-09-06 | 1984-03-07 | $7700.00 | Window Closed / Lapsed |