1
Robert L Boyd, Richard Krukowski, Daniel Y Gezari: Muscle exercise and rehabilitation apparatus. Biodex Corporation, Cobrin & Godsberg, September 8, 1987: US04691694 (142 worldwide citation)

A muscle exercise and rahabilitation apparatus includes a movable fixture against which a force can be applied; a servo motor having an output shaft coupled to the fixture; a strain gauge effectively coupled between the output shaft and the fixture for producing a load signal corresponding to the fo ...


2
Richard Krukowski: Muscle exercise and rehabilitation apparatus. Biodex Corporation, Stempler Cobrin & Godsberg, December 16, 1986: US04628910 (56 worldwide citation)

A muscle exercise and rehabilitation apparatus comprises a movable arm against which a force can be applied; a servo motor mechanically coupled to the arm through a gear reducer; a sensing device for sensing the force applied to the arm and for producing a load signal corresponding thereto; a tachom ...


3
James A Nicholas, Richard Krukowski: Manual muscle tester. Brumbaugh Graves Donohue & Raymond, February 26, 1985: US04501148 (27 worldwide citation)

A portable manual muscle tester has an external actuator, a case capable of being held in one hand and a digital display indicating peak force applied to the actuator. Strain gages connected in a bridge circuit are located on a flexure contacted by the actuator. The flexure is a cantilever beam shap ...


4
Richard Krukowski: Particle brake clutch muscle exercise and rehabilitation apparatus. Biodex Corporation, Cobrin Feingertz & Godsberg, August 23, 1988: US04765315 (27 worldwide citation)

A muscle exercise and rehabilitation apparatus includes a movable fixture against which an actuating force can be applied; a particle brake clutch for applying a braking force to the fixture in linear dependence on a braking current supplied thereto, in counteracting relation to the actuating force; ...


5
Richard D Brugger, Robert H Wager Jr, Richard Krukowski: Device for calibrating a transmissometer. December 14, 1976: US03997271 (7 worldwide citation)

This specification discloses a device for resetting the zero calibration of an opacity sensing meter (transmissometer) made up of a light source which may be located on one side of a smokestack, and a sensing element located on the other side of the smokestack. The rezeroing device will rezero the s ...