1
Edward L Farrar Jr: Apparatus for measuring range of motion. Duckworth Hobby & Allen, May 11, 1976: US03955562 (13 worldwide citation)

The range of motion that an individual can move his head or other body portions can be measured and recorded in an apparatus having a base with a plurality of switches mounted thereto in a plurality of predetermined positions with each switch being actuated by movement of the base as the individual ...


2
Edward L Farrar Jr: Pelvic traction belt. Duckworth Hobby & Allen, February 14, 1978: US04073290 (5 worldwide citation)

A pelvic traction belt for transmitting a longitudinal traction force and a rotary traction force through the pelvic area to the spinal column of a human wearer located generally in the supine position. The pelvic traction belt includes a circumferential section for encircling the pelvic area of the ...