Mark Rask resumes & CV records
Resumes
Big Schamoke
Location:
Minneapolis, MN
Industry:
Writing And Editing
Work:
Grand Poobaa
Big Schamoke
Big Schamoke
Mark C Rask, 674812 33Rd St, Minneapolis, MN 55422
Mark Rask Phones & Addresses
4812 33Rd St, Minneapolis, MN 55422 763-5887454
4812 33Rd Ave N, Minneapolis, MN 55422 763-5887454
Golden Valley, MN
4812 33Rd Ave N, Minneapolis, MN 55422
Work
Position:
Production Occupations
Education
Degree:
Graduate or professional degree
Mentions for Mark C Rask
Publications & IP owners
Us Patents
Electrically-Powered Expansion/Contraction Apparatus
US Patent:
4516102, May 7, 1985
Filed:
Nov 2, 1983
Appl. No.:
6/548214
Inventors:
Mark C. Rask - Minneapolis MN
International Classification:
H01F 708
US Classification:
335267
Abstract:
An electrically-powered expansion/contraction apparatus is disclosed. The apparatus preferably contracts and expands due to magnetic interaction within a plurality of motor units (20) or (21). Each motor unit (20) or (21) is in turn made up of a pair of interlinked subunits (22), (24). The subunits (22), (24) include inner elements (22) and outer elements (24) which contract when unlike magnetic poles are juxtaposed and expand when opposite poles are proximate to one another. A control circuit (44) for each subunit (22), (24) selectively prevents current flow or directs it in one of two directions to appropriately empower electromagnets (26) on the inner elements (22). Outer elements (24) can either include permanent magnets (40) or electromagnets (27). Mechanical stop means are provided by the nature of the interlinked design to give the motor unit (20) or (21) an "all-or-none" behavior akin to that of natural muscle.
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