Electric heating – Heating devices – With power supply and voltage or current regulation or...
Patent
1975-04-30
1976-09-21
Miller, J D
Electric heating
Heating devices
With power supply and voltage or current regulation or...
219483, 219497, 219501, H05B 102
Patent
active
039820971
ABSTRACT:
A programmable electronic control system for an array of electrical stations exemplified by food tray stations each of which is adapted to receive a food tray having two or more electrical heaters embedded in the tray. Each tray is detachable from its station. A separate power circuit is associated with each heater element at each tray station for supplying separately controllable power to each individual heater. A manually controlled programming channel is connected to each power circuit and includes means for generating control signals to enable or disable each separate power circuit to permit the programming of the entire array of tray stations. A manually controlled station reset device is connected to the programming channels for each tray station to remove any enabling control signals generated by the respective programming channels for that station to permit the re-programming of individual tray stations. A manually controlled master reset device is connected to all the programming channels for all the stations to remove any enabling control signals generating by any of the programming channels to permit the re-programming of the entire array of tray stations. A tray sensing device disables the power circuits associated with the respective tray stations whenever trays are absent from the respective stations, and enable the programming channels associated with the respective tray stations whenever trays are present at the respective stations. A locking device is provided for locking in all the control signals to prevent the re-programming or clearing of any of the tray stations after a complete program has been selected.
REFERENCES:
patent: 3227858 (1966-01-01), Rees
patent: 3315063 (1967-04-01), Ihlenfeldt
patent: 3371191 (1968-02-01), Seney
patent: 3431399 (1969-03-01), Venning
patent: 3560712 (1971-02-01), Toohill
patent: 3566079 (1971-02-01), O'Neill
patent: 3579264 (1971-05-01), Mork et al.
patent: 3855452 (1974-12-01), Flasza et al.
Freund Michael C.
Seider Gene J.
Bell Fred E.
Gould Inc.
Miller J D
LandOfFree
Programmable electronic control system for multiple electric sta does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Programmable electronic control system for multiple electric sta, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Programmable electronic control system for multiple electric sta will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1414955