Steven N Frank

US Patent:

47559306, Jul 5, 1988

Filed:

Jun 27, 1985

Appl. No.:

6/749581

Inventors:

Andrew W. Wilson - Pittsburgh PA
Steven J. Frank - Southboro MA

Assignee:

Encore Computer Corporation - Marlboro MA

International Classification:

G06F 1208
G06F 1212

US Classification:

364200

Abstract:

A caching system for a shared bus multiprocessor which includes several processors each having its own private cache memory. Each private cache is connected to a first bus to which a second, higher level cache memory is also connected. The second, higher level cache in turn is connected either to another bus and higher level cache memory or to main system memory through a global bus. Each higher level cache includes enough memory space so as to enable the higher level cache to have a copy of every memory location in the caches on the level immediately below it. In turn, main memory includes enough space for a copy of each memory location of the highest level of cache memories. The caching can be used with either write-through or write-deferred cache coherency management schemes.

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.