Steven Alexander Frank

US Patent:

50588885, Oct 22, 1991

Filed:

Nov 13, 1989

Appl. No.:

7/436191

Inventors:

Christopher W. Walker - Middleburg VA
Michael M. Szafranski - Fairfax VA
Sung H. Kim - Palo Alto CA
Howell F. Hsiao - Mountain Beach CA
Steven R. Frank - Golden CO

Assignee:

Walker Fitness Systems, Inc. - Reston VA

International Classification:

A63B 21008

US Classification:

272130

Abstract:

An automatic force generating and control system including a lever pivotally attached to a monolith and a lower body exerciser pivotally attached to a bench, with both the bench and monolith attached to a platform. The rotation of the lower body exerciser is translated into linear movement by a series of sprockets and timing belts. The electrical output from load cells and potentiometers are processed by the electronic controls to determine the speed, direction and position and the amount and direction of force being exerted on the lever and lower body exerciser. Resistance to movement is provided by a lever hydraulics assembly and a lower body hydraulics assembly. The lever has arms and handles which articulate to the physique of the user and the exercise to be performed. The arms pivot in mirror relationship and the lower body exerciser may be lengthened or shortened. Electric solenoid clutches or hydraulics may engage the handles to the arms and the arms to the head of the lever.

US Patent:

52097153, May 11, 1993

Filed:

Sep 26, 1991

Appl. No.:

7/765968

Inventors:

Christopher W. Walker - Middleburg VA
Michael M. Szafranski - Fairfax VA
Sung H. Kim - Palo Alto CA
Howell F. Hsiao - Mountain View CA
Steven R. Frank - Golden CO

Assignee:

Walker Fitness Systems, Inc. - Reston VA

International Classification:

A63B 2100

US Classification:

482137

Abstract:

An automatic force generating and control system including a lever pivotally attached to a monolith and a lower body exerciser pivotally attached to a bench, with both the bench and monolith attached to a platform. The rotation of the lower body exerciser is translated into linear movement by a series of sprockets and timing belts. The electrical output from load cells and potentiometers are processed by the electronic controls to determine the speed, direction and position and the amount and direction of force being exerted on the lever and lower body exerciser. Resistance to movement is provided by a lever hydraulics assembly and a lower body hydraulics assembly. The lever has arms and handles which articulate to the physique of the user and the exercise to be performed. The arms pivot in mirror relationship and the lower body exerciser may be lengthened or shortened. Electric solenoid clutches or hydraulics may engage the handles to the arms and the arms to the head of the lever.