GB775631A - Improvements relating to the control of electric motors driving windshield wipers - Google Patents

Improvements relating to the control of electric motors driving windshield wipers

Info

Publication number
GB775631A
GB775631A GB24341/55A GB2434155A GB775631A GB 775631 A GB775631 A GB 775631A GB 24341/55 A GB24341/55 A GB 24341/55A GB 2434155 A GB2434155 A GB 2434155A GB 775631 A GB775631 A GB 775631A
Authority
GB
United Kingdom
Prior art keywords
motor
switch
heating
coil
intermittent operation
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
GB24341/55A
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.)
Alfa Romeo SpA
Original Assignee
Alfa Romeo SpA
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 Alfa Romeo SpA filed Critical Alfa Romeo SpA
Publication of GB775631A publication Critical patent/GB775631A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
    • B60S1/00—Cleaning of vehicles
    • B60S1/02—Cleaning windscreens, windows or optical devices
    • B60S1/04—Wipers or the like, e.g. scrapers
    • B60S1/06—Wipers or the like, e.g. scrapers characterised by the drive
    • B60S1/08—Wipers or the like, e.g. scrapers characterised by the drive electrically driven
    • B60S1/0803—Intermittent control circuits

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Motor And Converter Starters (AREA)

Abstract

775,631. Windscreen cleaners. ALFA ROMEO SOC. PER AZIONI. Aug. 24, 1955 [Sept. 17, 1954], No. 24341/55. Class 138(1) [Also in Group XXXVII] An electric motor 1 driving the blade of a windscreen wiper is controlled by a switch 3 having an "off" position and two operative positions. When the switch is set to engage contact 4, the motor is continuously energized. Movement of the switch to engage contact 7 energizes the heating-coil of a bimetallic strip 12 which is adapted to expand and to actuate a spring-biassed switch-member 8 for opening the heating circuit and closing the motor circuit. After a time delay, the bimetallic element cools sufficiently to allow the member 8 to snap back to its original position, so providing intermittent operation of the motor and preventing excessive wear of the wiper when the screen is only slightly wet. The switch 3 may be coupled to a rheostat for adjusting the current through the heating-coil when the switch is positioned for intermittent operation of the motor, thus controlling the on-off periods of the motor, Fig. 2 (not shown). The heating-coil may be connected in parallel with an adjustable resistor and in series with the motor so as to act as an overload release to protect the motor against excessive current, Fig. 3 (not shown). The thermal 'switch may be replaced by one of the clockwork type.
GB24341/55A 1954-09-17 1955-08-24 Improvements relating to the control of electric motors driving windshield wipers Expired GB775631A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT775631X 1954-09-17

Publications (1)

Publication Number Publication Date
GB775631A true GB775631A (en) 1957-05-29

Family

ID=11316253

Family Applications (1)

Application Number Title Priority Date Filing Date
GB24341/55A Expired GB775631A (en) 1954-09-17 1955-08-24 Improvements relating to the control of electric motors driving windshield wipers

Country Status (1)

Country Link
GB (1) GB775631A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3497790A (en) * 1966-02-04 1970-02-24 Renault Windscreen wiper control circuits
GB2212664A (en) * 1987-11-23 1989-07-26 Otter Controls Ltd Thermal sensors
GB2248520A (en) * 1987-11-23 1992-04-08 Otter Controls Ltd Thermal sensors

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3497790A (en) * 1966-02-04 1970-02-24 Renault Windscreen wiper control circuits
GB2212664A (en) * 1987-11-23 1989-07-26 Otter Controls Ltd Thermal sensors
GB2248520A (en) * 1987-11-23 1992-04-08 Otter Controls Ltd Thermal sensors
GB2248519A (en) * 1987-11-23 1992-04-08 Otter Controls Ltd Thermal sensors
GB2248519B (en) * 1987-11-23 1992-06-24 Otter Controls Ltd Improvements relating to thermally responsive controls for water boiling vessels
GB2248520B (en) * 1987-11-23 1992-06-24 Otter Controls Ltd Improvements relating to thermally responsive controls for water boiling vessels
GB2212664B (en) * 1987-11-23 1992-07-08 Otter Controls Ltd Improvements relating to thermally responsive actuators

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