04814661 is referenced by 295 patents and cites 9 patents.

Systems including piezoelectric sensor elements advantageously mounted between supporting hard plastic material of various types or other mechanically similar materials. The sensor can further be supported by backup plate structures. Some backup plates show full shoe coverage and others show partial sole coverage. Detachable mounting formed by mechanically interengaging parts allow transducer inserts to be made in a modular manner for use in different sensor shoes or sensor insole pads, thus allowing many more patients to be analyzed and treated through use of the invention. Also disclosed is a digital charge signal integrator circuit.

Title
Systems for measurement and analysis of forces exerted during human locomotion
Application Number
866875
Publication Number
4814661
Application Date
October 26, 1987
Publication Date
March 21, 1989
Inventor
John M Frame
Pullman
WA, US
Barrie D Grant
Pullman
WA, US
Marc H Ratzlaff
Moscow
ID, US
Agent
Wells St John & Roberts
Assignee
Washington State University Research Foundation
WA, US
IPC
H01L 41/08
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