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
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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Direct Current Motors (AREA)
- Harvester Elements (AREA)
- Motor Or Generator Cooling System (AREA)
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.
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)
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)
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 |
-
1968
- 1968-09-30 DE DE19681788084 patent/DE1788084B2/en active Pending
-
1969
- 1969-09-10 AT AT861169A patent/AT288534B/en not_active IP Right Cessation
- 1969-09-10 CH CH1364669A patent/CH497811A/en not_active IP Right Cessation
- 1969-09-24 GB GB1289359D patent/GB1289359A/en not_active Expired
- 1969-09-25 FR FR6932796A patent/FR2019175A1/fr not_active Withdrawn
Cited By (2)
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 |
---|---|
CH497811A (en) | 1970-10-15 |
DE1788084A1 (en) | 1972-01-13 |
FR2019175A1 (en) | 1970-06-26 |
AT288534B (en) | 1971-03-10 |
DE1788084B2 (en) | 1973-08-09 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
ES440677A2 (en) | Zener diode effect on long acceleration module | |
GB960910A (en) | Electric hand mixer | |
GB1229198A (en) | ||
GB1289359A (en) | ||
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) | ||
GB1106589A (en) | Dynamoelectric machine | |
GB1174557A (en) | End Face Commutator | |
GB1133818A (en) | Convertible power appliance | |
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 | |
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 | |
GB1044711A (en) | Speed responsive electric switch | |
GB1338258A (en) | Extractor fans | |
GB991071A (en) | Speed stabilization for d.c. motors, more particularly for phonograph recorders | |
GB958902A (en) | Improvements in and relating to d.c. electric motors | |
GB647692A (en) | Improvements in or relating to electric motors | |
GB596604A (en) | Improvements in dynamo electric machines | |
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 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PLNP | Patent lapsed through nonpayment of renewal fees |