Adams Rite Manufacturing Co.

Stephen P Graber

Stephen A Harris

Apparatus to provide controlled frictional resistance to cyclic displacement of a member, comprising a base, a friction part frictionally and slidably engagable with base, in response to displacement of member, at least one spring element transmitting force acting to hold part in frictional engagement with the base, one of friction part and base having a friction surface engaged with the other of part and base, and characterized in that the force to overcome friction between the base and part remains substantially constant over a large number of displacement cycles of the member.

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Lakewood, CA, United States of America

Stephen P Graber