US3971885A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Remote control system for passenger conveyors
Assignee: Mitsubishi Electric Corp
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Filing: 1975-07-17
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Granted: 1976-07-27
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Expires: 1995-07-17
Abstract
Abstract One monitor pushbuttons for each of two passenger conveyors is pushed to energize a relay through normally closed contacts of a similar relay and monitor pushbutton for the other passenger conveyor to monitor the associated passenger conveyor by a television receiver. In order to remotely start and stop each passenger conveyor, a contactor for operating an associated electric motor is connected to a remotely operated start pushbutton through normally open contacts of the relay and to a remotely operated stop pushbutton. When energized, the relay and contactor are self-held.
Inventors
- 👤 Katsumi Kito
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:23
CPC Classifications
H; H04; H04N; H04N7/00; H04N7/18; H04N7/181
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
92 words
A control system for remotely controlling the operation of a plurality of passenger conveyors, comprising one monitor switch for each of the passenger conveyors, television receiver means responsive to the operation of each of said monitor switches to remotely monitor the operation of that passenger conveyor operatively associated with the operated monitor switch, remotely operated switch means operative to remotely control the operation of the respective passenger conveyors, and means for remotely controlling the operation of each of the passenger conveyors only when the latter is monitored by said television receiver means.
Claim 2
Dependent Claim
92 words
A control system for remotely controlling the operation of a plurality of passenger conveyors, comprising one monitor switch for each of the passenger conveyors, television receiver means responsive to the operation of each of said monitor switches to remotely monitor the operation of that passenger conveyor operatively associated with the operated monitor switch, remotely operated switch means operative to remotely control the operation of the respective passenger conveyors, and means for remotely controlling the operation of each of the passenger conveyors only when the latter is monitored by said television receiver means.
Claim 3
Dependent Claim
33 words
A control system as claimed in claim 1 wherein said television receiver means comprises one television receiver having the operation of a single one of the passenger conveyors reproduced thereon at a time.
Claim 4
Dependent Claim
111 words
A control system for remotely controlling the operation of a plurality of passenger conveyors, comprising one monitor switch for each of the passenger conveyors, television receiver means responsive to the operation of each of said monitor switches to remotely monitor the operation of that passenger conveyor operatively associated to the operated monitor switch, remotely operated switch means operative to remotely control the operation of the respective passenger conveyors, and one means interlocking with each of said monitor switches, the arrangement being such that only duration the operation of said interlocking means, said remotely operated switch means is enabled to remotely operate that passenger conveyor operatively associated with the operated interlocking means.
Claim 5
Dependent Claim
111 words
A control system for remotely controlling the operation of a plurality of passenger conveyors, comprising one monitor switch for each of the passenger conveyors, television receiver means responsive to the operation of each of said monitor switches to remotely monitor the operation of that passenger conveyor operatively associated to the operated monitor switch, remotely operated switch means operative to remotely control the operation of the respective passenger conveyors, and one means interlocking with each of said monitor switches, the arrangement being such that only duration the operation of said interlocking means, said remotely operated switch means is enabled to remotely operate that passenger conveyor operatively associated with the operated interlocking means.
Claim 6
Dependent Claim
33 words
A control system as claimed in claim 3 wherein said television receiver means comprises one television receiver having the operation of a single one of the passenger conveyors reproduced thereon at a time.
Claim 7
Dependent Claim
94 words
A control system for remotely controlling the operation of a plurality of passenger conveyors, comprising one monitor switch for each of the passenger conveyors, television receiver means responsive to the operation of each of said monitor switches to remotely monitor the operation of that passenger conveyor operatively associated to the operated monitor switch, remotely operated switch means for remotely controlling the start and stop the respective passenger conveyors, and means for remotely controlling the start and stop of each of the passenger conveyors only when the latter is monitored by said television receiver means.
Claim 8
Dependent Claim
94 words
A control system for remotely controlling the operation of a plurality of passenger conveyors, comprising one monitor switch for each of the passenger conveyors, television receiver means responsive to the operation of each of said monitor switches to remotely monitor the operation of that passenger conveyor operatively associated to the operated monitor switch, remotely operated switch means for remotely controlling the start and stop the respective passenger conveyors, and means for remotely controlling the start and stop of each of the passenger conveyors only when the latter is monitored by said television receiver means.
Claim 9
Dependent Claim
33 words
A control system as claimed in claim 5 wherein said television receiver means comprises one television receiver having the operation of a single one of the passenger conveyors reproduced thereon at a time.
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) | 1979-07-27 | 1980-01-26 | 1980-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-07-27 | 1984-01-26 | 1984-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-07-27 | 1988-01-26 | 1988-07-27 | $7700.00 | Window Closed / Lapsed |