GB1289359A - - Google Patents

Info

Publication number
GB1289359A
GB1289359A GB1289359DA GB1289359A GB 1289359 A GB1289359 A GB 1289359A GB 1289359D A GB1289359D A GB 1289359DA GB 1289359 A GB1289359 A GB 1289359A
Authority
GB
United Kingdom
Prior art keywords
switch
motor
diode
cover
brush carrier
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
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 filed Critical
Publication of GB1289359A publication Critical patent/GB1289359A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K23/00—DC commutator motors or generators having mechanical commutator; Universal AC/DC commutator motors
    • H02K23/66—Structural association with auxiliary electric devices influencing the characteristic of, or controlling, the machine, e.g. with impedances or switches

Abstract

1289359 Control of AC motors; cooling motor rectifiers ROBERT BOSCH GmbH 24 Sept 1969 [30 Sept 1968] 47002/69 Headings H2A and H2J An electric drill is driven by a universal motor associated with a single-pole switch 25 and a diode 31 in parallel therewith, arranged in a supply lead for the motor. The switch is inserted by lugs 26 into corresponding depressions in a brush carrier, and abuts against the rear wall of extension 17 of the carrier by means of lug 26a. A sliding piece 27 for operating the switch extends through opening 28 in cover 18. The diode is suspended on wires in fron of an opening of the brush carrier and thus in the intake air stream of the motor. The switch is additionally held by guide 24 incorporated in the cover 18. In another arrangement, additional ribs are formed on the brush carrier to prevent any connection wires, which may become detached from tags of the switch, from entering the region of cooling air inlet openings in the cover, Fig. 5 (not shown). The speed of the motor is reduced when the diode is conductive to supply half-wave current. The diode may be used in conjunction with other speed-changing devices such as a mechanical transmission.
GB1289359D 1968-09-30 1969-09-24 Expired GB1289359A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19681788084 DE1788084B2 (en) 1968-09-30 1968-09-30 UNIVERSAL MOTOR WITH ELECTRICALLY SWITCHABLE SPEED

Publications (1)

Publication Number Publication Date
GB1289359A true GB1289359A (en) 1972-09-20

Family

ID=5706645

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1289359D Expired GB1289359A (en) 1968-09-30 1969-09-24

Country Status (5)

Country Link
AT (1) AT288534B (en)
CH (1) CH497811A (en)
DE (1) DE1788084B2 (en)
FR (1) FR2019175A1 (en)
GB (1) GB1289359A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2117981A (en) * 1982-03-31 1983-10-19 Fiat Auto Spa Electrical generator apparatus
US4896067A (en) * 1986-08-30 1990-01-23 Swf Auto-Electric Gmbh Electrical machine, especially electric motor

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0149418A1 (en) * 1984-01-11 1985-07-24 Perles Elektrowerkzeuge Und Motoren Ag Interconnection process for an electric motor having auxiliary elements, and device for carrying it out

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2117981A (en) * 1982-03-31 1983-10-19 Fiat Auto Spa Electrical generator apparatus
US4896067A (en) * 1986-08-30 1990-01-23 Swf Auto-Electric Gmbh Electrical machine, especially electric motor

Also Published As

Publication number Publication date
FR2019175A1 (en) 1970-06-26
DE1788084B2 (en) 1973-08-09
DE1788084A1 (en) 1972-01-13
AT288534B (en) 1971-03-10
CH497811A (en) 1970-10-15

Similar Documents

Publication Publication Date Title
GB960910A (en) Electric hand mixer
GB1229198A (en)
GB1289359A (en)
ES367344A1 (en) Electronic speed arrangement for electrically operated power tools
ES336484A1 (en) Improvements in electrical control circuits for vehicles equipped with a battery-driven drive motor. (Machine-translation by Google Translate, not legally binding)
GB1227791A (en)
ES344581A1 (en) Cooling device in an electric motor, particularly adapted for machines for washing clothes. (Machine-translation by Google Translate, not legally binding)
GB1068990A (en) Variable-speed portable electric tools
FR2425921A1 (en) CONTROL SYSTEM FOR WORKSTATIONS
GB1073109A (en) Trigger operated speed control assembly for electric motors
GB1117007A (en) Improvements in and relating to d.c. motor control circuits
ES306991A1 (en) Improvements introduced in electric collector engines. (Machine-translation by Google Translate, not legally binding)
ES486820A1 (en) Electric vacuum cleaner.
GB977762A (en) Apparatus controlling the speed of direct current motors
GB1118242A (en) Multi-speed portable electric tools
GB1339352A (en) Safety device for an electric motor reversing switch
GB1338258A (en) Extractor fans
GB958902A (en) Improvements in and relating to d.c. electric motors
GB647692A (en) Improvements in or relating to electric motors
GB1056594A (en) A high speed winding collet
GB1010801A (en) Improvements in casings or ducts for fans
GB1079357A (en) A plug-in solid state speed control unit for d.c. shunt-wound motors
GB1044711A (en) Speed responsive electric switch
ES28181U (en) Protective device for electric appliances refrigerated by a fan (Machine-translation by Google Translate, not legally binding)
SE7905597L (en) SPEED CONTROL DEVICE

Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees