Patent US3794888A successfully refreshed from Google Patents.
US3794888A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Remote control switch circuit
Assignee: Panasonic Electric Works Co Ltd
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Filing: 1972-09-27
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Granted: 1974-02-26
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Expires: 1992-09-27
Abstract
Abstract A remote control switch circuit for switching on and off an associated load with a remote control relay operated by one of a plurality of remote control switches which is actuated independently of others. The circuit comprises a series circuit of a remote load section including the remote control relay connected to the load and normally closed and normally opened contacts connected in series through a pair of reversely connected diodes to the relay and a first operating switch section including the remote control switch for initiating and interrupting current fed to a polar relay and normally closed and normally opened contacts connected in series through a pair of reversly connected diodes to the switch, and an AC source providing source voltage to said series circuit. Other operating switch section or sections will be connected to said first section in parallel relation thereto.
Inventors
- 👤 T Hisano
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:20
CPC Classifications
H; H01; H01H; H01H3/00; H01H3/22; H01H3/28
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
256 words
A remote control switch circuit comprising the combination of a. a remote load section comprising 1. a first polarized relay coil for operating the contacts of a load, 2. a pair of oppositely facing diodes connected in parallel with each other with one end of the parallel diodes connected to said coil, 3. and a switch operated by said first polarized relay coil and connected to the other end of the parallel diodes for connecting alternate ones of said diodes in series with said coil in response to energization of said coil by signals of alternate polarities, b. and at least one operating switch section comprising 1. a second polarized relay coil, 2. a second pair of oppositely facing diodes connected in parallel with each other and with said second coil, 3. a manually operated switch connected in series with said first polarized relay coil for connecting either said secOnd coil or the second pair of diodes in series with said first coil, 4. a switch operated by said second polarized relay coil connected between said manually operated switch and said second pair of diodes for connecting alternate ones of said second pair of diodes in series with said manually operated switch in response to energization of said second coil by signals of alternate polarities, 5. and an indicating lamp connected in series with said first polarized relay coil and at least one of the diodes in said second pair. c. and an a-c source connected across said remote load section and said operating switch section.
Claim 2
Dependent Claim
256 words
A remote control switch circuit comprising the combination of a. a remote load section comprising 1. a first polarized relay coil for operating the contacts of a load, 2. a pair of oppositely facing diodes connected in parallel with each other with one end of the parallel diodes connected to said coil, 3. and a switch operated by said first polarized relay coil and connected to the other end of the parallel diodes for connecting alternate ones of said diodes in series with said coil in response to energization of said coil by signals of alternate polarities, b. and at least one operating switch section comprising 1. a second polarized relay coil, 2. a second pair of oppositely facing diodes connected in parallel with each other and with said second coil, 3. a manually operated switch connected in series with said first polarized relay coil for connecting either said secOnd coil or the second pair of diodes in series with said first coil, 4. a switch operated by said second polarized relay coil connected between said manually operated switch and said second pair of diodes for connecting alternate ones of said second pair of diodes in series with said manually operated switch in response to energization of said second coil by signals of alternate polarities, 5. and an indicating lamp connected in series with said first polarized relay coil and at least one of the diodes in said second pair. c. and an a-c source connected across said remote load section and said operating switch section.
Claim 3
Dependent Claim
23 words
a pair of oppositely facing diodes connected in parallel with each other with one end of the parallel diodes connected to said coil,
Claim 4
Dependent Claim
23 words
a pair of oppositely facing diodes connected in parallel with each other with one end of the parallel diodes connected to said coil,
Claim 5
Dependent Claim
18 words
a second pair of oppositely facing diodes connected in parallel with each other and with said second coil,
Claim 6
Dependent Claim
18 words
a second pair of oppositely facing diodes connected in parallel with each other and with said second coil,
Claim 7
Dependent Claim
60 words
A remote control switch circuit as set forth in claim 1 which includes a plurality of said operating switch sections in at least one of which the indicating lamp is connected in series with at least one of the diodes in said second pair and said a-c. source, and including a further diode connected in series with said indicating lamp.
Claim 8
Dependent Claim
31 words
a manually operated switch connected in series with said first polarized relay coil for connecting either said secOnd coil or the second pair of diodes in series with said first coil,
Claim 9
Dependent Claim
31 words
a manually operated switch connected in series with said first polarized relay coil for connecting either said secOnd coil or the second pair of diodes in series with said first coil,
Claim 10
Dependent Claim
53 words
and a switch operated by said first polarized relay coil and connected to the other end of the parallel diodes for connecting alternate ones of said diodes in series with said coil in response to energization of said coil by signals of alternate polarities, b. and at least one operating switch section comprising
Claim 11
Dependent Claim
53 words
and a switch operated by said first polarized relay coil and connected to the other end of the parallel diodes for connecting alternate ones of said diodes in series with said coil in response to energization of said coil by signals of alternate polarities, b. and at least one operating switch section comprising
Claim 12
Dependent Claim
51 words
a switch operated by said second polarized relay coil connected between said manually operated switch and said second pair of diodes for connecting alternate ones of said second pair of diodes in series with said manually operated switch in response to energization of said second coil by signals of alternate polarities,
Claim 13
Dependent Claim
51 words
a switch operated by said second polarized relay coil connected between said manually operated switch and said second pair of diodes for connecting alternate ones of said second pair of diodes in series with said manually operated switch in response to energization of said second coil by signals of alternate polarities,
Claim 14
Dependent Claim
40 words
and an indicating lamp connected in series with said first polarized relay coil and at least one of the diodes in said second pair. c. and an a-c source connected across said remote load section and said operating switch section.
Claim 15
Dependent Claim
40 words
and an indicating lamp connected in series with said first polarized relay coil and at least one of the diodes in said second pair. c. and an a-c source connected across said remote load section and said operating switch section.
References Cited (Backward Citations)
US3201754A
Cited
US3273024A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-02-25 | 1977-08-27 | 1978-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-25 | 1981-08-27 | 1982-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-25 | 1985-08-27 | 1986-02-26 | $7700.00 | Window Closed / Lapsed |