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US5454765A
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Electrically energized oil shear drive system
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US5487456A
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Press drive with oil shear clutch/brake drives with internal flywheel brake
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US5323888A
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Electrical actuated multi-speed drive apparatus
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US5195623A
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Two speed drive with oil shear electro clutch/brake
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US5194057A
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Two speed press drive
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US5186288A
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Electro-shear brake
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US4921078A
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Electro-shear brake
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US4865172A
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Combination brake and inching device
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US4765448A
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Inching drive
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AU4371585A
|
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Universal coupling
|
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US4600368A
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Pressure actuated downhole pump
|
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US4527681A
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Variable speed drive unit with graduated increasing and decreasing speed profile
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CA1196789A
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Universal coupling
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US4598804A
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Motor drive system
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US4552255A
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Multiple speed drive
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US4616739A
|
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Inching drive
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US4496032A
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Brake unit
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US4472077A
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Clutch and brake and improved universal coupling
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GB8300729D0
|
|
Self brake assembly
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DE3243665A1
|
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SPEED-VARIABLE DRIVE WITH DISC CLUTCH
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