GB1426176A - Road vehicle rear window heater circuits - Google Patents

Road vehicle rear window heater circuits

Info

Publication number
GB1426176A
GB1426176A GB1605572A GB1605572A GB1426176A GB 1426176 A GB1426176 A GB 1426176A GB 1605572 A GB1605572 A GB 1605572A GB 1605572 A GB1605572 A GB 1605572A GB 1426176 A GB1426176 A GB 1426176A
Authority
GB
United Kingdom
Prior art keywords
energized
transistor
relay coil
rear window
capacitor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB1605572A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Lucas Electrical Co Ltd
Original Assignee
Lucas Electrical Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Lucas Electrical Co Ltd filed Critical Lucas Electrical Co Ltd
Priority to GB1605572A priority Critical patent/GB1426176A/en
Priority to US00338221A priority patent/US3858027A/en
Priority to FR7311770A priority patent/FR2179425A5/fr
Priority to IT49233/73A priority patent/IT982960B/en
Priority to DE2317488A priority patent/DE2317488A1/en
Priority to JP48039147A priority patent/JPS4915137A/ja
Publication of GB1426176A publication Critical patent/GB1426176A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/84—Heating arrangements specially adapted for transparent or reflecting areas, e.g. for demisting or de-icing windows, mirrors or vehicle windshields
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B1/00—Details of electric heating devices
    • H05B1/02—Automatic switching arrangements specially adapted to apparatus ; Control of heating devices
    • H05B1/0227—Applications
    • H05B1/023—Industrial applications
    • H05B1/0236—Industrial applications for vehicles
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B2203/00—Aspects relating to Ohmic resistive heating covered by group H05B3/00
    • H05B2203/035—Electrical circuits used in resistive heating apparatus

Landscapes

  • Control Of Resistance Heating (AREA)
  • Control Of Electric Motors In General (AREA)
  • Nozzles (AREA)

Abstract

1426176 Road vehicle rear window heating LUCAS ELECTRICAL CO Ltd 15 Feb 1973 [7 April 1972] 16055/72 Heading H2H A road vehicle rear window heating system comprises capacitor means, the discharge of which determines the period during which the window heater is energized. When an ignition switch 13 is closed a rear window heater 33 is energized by closure of contacts 32 when a relay coil 29 is energized, a lamp 34 indicating energization of the heater. A Schmitt trigger circuit is normally such that transistor 19 is off and transistor 23 on, therefore transistor 28 is off and the relay coil 29 is de-energized. Momentary closure of a manually operable switch 16 causes a capacitor 17 to become charged thereby changing the states of the transistors 19, 23, 28. Relay coil 29 is now energized to close contacts 32 to energize the window heater 33. The capacitor now begins to discharge by way of variable resistor 18, resistor 26 and the baseemitter junction of transistor 19 and when the capacitor is discharged to a predetermined level in, say 5 minutes, the transistors 19, 23, 28 revert to the normal states, the relay coil 29, and hence the window heater 33, are deenergized. A diode 14 is provided for protection of the transistors against reverse polarity transients.
GB1605572A 1972-04-07 1972-04-07 Road vehicle rear window heater circuits Expired GB1426176A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
GB1605572A GB1426176A (en) 1972-04-07 1972-04-07 Road vehicle rear window heater circuits
US00338221A US3858027A (en) 1972-04-07 1973-03-05 Road vehicle rear window heater circuits
FR7311770A FR2179425A5 (en) 1972-04-07 1973-04-02
IT49233/73A IT982960B (en) 1972-04-07 1973-04-04 HEATER CIRCUIT FOR WINDOW OF ROAD VEHICLE
DE2317488A DE2317488A1 (en) 1972-04-07 1973-04-06 HEATING CIRCUIT FOR REAR WINDOWS OF MOTOR VEHICLES
JP48039147A JPS4915137A (en) 1972-04-07 1973-04-07

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1605572A GB1426176A (en) 1972-04-07 1972-04-07 Road vehicle rear window heater circuits

Publications (1)

Publication Number Publication Date
GB1426176A true GB1426176A (en) 1976-02-25

Family

ID=10070338

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1605572A Expired GB1426176A (en) 1972-04-07 1972-04-07 Road vehicle rear window heater circuits

Country Status (6)

Country Link
US (1) US3858027A (en)
JP (1) JPS4915137A (en)
DE (1) DE2317488A1 (en)
FR (1) FR2179425A5 (en)
GB (1) GB1426176A (en)
IT (1) IT982960B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4506137A (en) * 1983-02-18 1985-03-19 Meister Jack B Temperature responsive control circuit for electric window de-fogger/deicer heater

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3944893A (en) * 1973-10-29 1976-03-16 Trw Inc. Vehicle window heater control device
GB1500512A (en) * 1974-01-29 1978-02-08 Lucas Electrical Ltd Control circuits for vehicle rear window heaters
US3937922A (en) * 1974-08-27 1976-02-10 General Electric Company Control system
US4118582A (en) * 1975-10-28 1978-10-03 E. I. Du Pont De Nemours And Company Purification of spent ethylene glycol
GB1483033A (en) * 1976-02-11 1977-08-17 Ford Motor Co Vehicle window heating circuit
FR2421589A1 (en) * 1977-06-17 1979-11-02 Saint Gobain Vehicle rear window heating circuit - consists of humidity detector and time switch for circuit with thermistor
CA1096028A (en) * 1978-04-21 1981-02-17 Rodney Hayden Timed electric switch
US4225777A (en) * 1978-08-18 1980-09-30 Mark Schindler Multiple variable phase control circuit
DE3215802A1 (en) * 1982-04-28 1983-11-03 Bayerische Motoren Werke AG, 8000 München SWITCHING ARRANGEMENT FOR A ELECTRICAL ADDITIONAL HEATING IN MOTOR VEHICLES
US4510376A (en) * 1982-07-22 1985-04-09 Alco Foodservice Equipment Company Variable timing system for toasters and similar appliances
JPS5920732U (en) * 1982-07-27 1984-02-08 株式会社東海理化電機製作所 timer circuit
JPS59137237A (en) * 1983-01-28 1984-08-07 Nissan Motor Co Ltd Electric current supply device of heating element for car
US4673797A (en) * 1985-10-28 1987-06-16 Donnelly Corporation Power control for heated windshields
US4730097A (en) * 1986-08-15 1988-03-08 General Motors Corporation Dual mode windshield heater control
US4829163A (en) * 1988-02-08 1989-05-09 General Motors Corporation Crack detector for heated glass panel
US5072098A (en) * 1990-06-11 1991-12-10 Chrysler Corporation Electrically heated windshield controller
US5852284A (en) * 1997-01-07 1998-12-22 Libbey-Owens-Ford Co. Insulating glass with capacitively coupled heating system
CN101644964B (en) * 2008-08-08 2012-09-19 鸿富锦精密工业（深圳）有限公司 Mouse
US10638543B2 (en) 2017-08-31 2020-04-28 Taiwan Semiconductor Manufacturing Company, Ltd. Photonic heater

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1686146A (en) * 1927-01-31 1928-10-02 Everett H Price Heater for windshields
US2725605A (en) * 1950-04-24 1955-12-06 Haltenberger Jules Automobile glass defrosting and drying
US3287608A (en) * 1963-06-03 1966-11-22 Westinghouse Air Brake Co Time delay control circuit
US3409759A (en) * 1966-07-21 1968-11-05 Libbey Owens Ford Glass Co Laminated transparent panel incorporating electrical heating wires and method of producing same
US3515853A (en) * 1967-09-15 1970-06-02 North American Rockwell Heating apparatus
US3745382A (en) * 1972-02-18 1973-07-10 Rhomega Syst Inc Solid state timer circuit for controlling the energization time of a load
US3721832A (en) * 1972-03-29 1973-03-20 Gen Electric Time delay after de-energization circuit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4506137A (en) * 1983-02-18 1985-03-19 Meister Jack B Temperature responsive control circuit for electric window de-fogger/deicer heater

Also Published As

Publication number Publication date
FR2179425A5 (en) 1973-11-16
JPS4915137A (en) 1974-02-09
DE2317488A1 (en) 1973-10-18
US3858027A (en) 1974-12-31
IT982960B (en) 1974-10-21

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee