ELECTRIC DRIVE TO BE EMPLOYED IN A DRILLING RIG
United States Patent 3538363
US Patent References:
Variable speed alternating current motor
- - 2246372
Adjustable pole pitch dynamoelectric machinery
- - 2675494
Variable speed alternating current motor
- - 2246372
Adjustable pole pitch dynamoelectric machinery
- - 2675494
Inventors:
Maryanovsky, David Isaakovich
Kagan, Solomon Yakovlevich
Takoev, Dzandar Avsimaikhovich
Pekhviashvili, Vasily Vissarion
Trifonov, Valentin Lavrovich
Kagan, Solomon Yakovlevich
Takoev, Dzandar Avsimaikhovich
Pekhviashvili, Vasily Vissarion
Trifonov, Valentin Lavrovich
Publication Date:
11/03/1970
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Assignee:
David, Isaakovich Maryanovsky
Solomon, Yakovlevich Kagan
Dzandar, Avsimaikhovich Takoev
Vasily, Vissarionovich Pekhvias
Valentin, Lavrovich Trifonov
Solomon, Yakovlevich Kagan
Dzandar, Avsimaikhovich Takoev
Vasily, Vissarionovich Pekhvias
Valentin, Lavrovich Trifonov
Primary Class:
Other Classes:
310/254, 310/74, 310/166
International Classes:
H02P1/16; H02K49/04
Foreign References:
| GB754140A |