Title: Load signaling device for a patient's foot

Abstract: A device for signaling a patient when a predetermined load is placed on the patient's foot comprises a resilient foot pad having a toe end and a heel end and adapted to substantially cover the inner sole of a shoe. A resilient liquid filled tube is mounted within the pad with the tube extending from adjacent the toe end to adjacent the heel end of the pad. A signaling device is controlled by a pressure responsive means in communication with the liquid in the tube for the actuation of the signaling means at a predetermined pressure of said liquid.

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Inventors: Sipe, John Joseph (Philadelphia, PA, US)

Application Number: 490313
Filing Date: 1974-07-22
Publication_date: 1976-08-10
Assignee: Smithkline Corporation (Philadelphia, PA)
Primary Class(es): 340/573.1 33/3A, 36/137, 36/139, 73/172, 177/46, 177/209, 177/245, 200/85R, 200/86.5, 340/666, 482/8, 482/51, 600/592
Other Classes:
US Patent Ref:

1824663	Sep, 1931	Munbrun	340/273.
2558805	Jul, 1951	Yaglou	73/172.
2972132	Feb, 1961	Putney	340/240.
3305036	Feb, 1967	Walters	177/209.
3699398	Oct, 1972	Newmeyer	340/272.
3702999	Nov, 1972	Gradisar	340/272.
3791375	Feb, 1974	Pfeiffer	177/209.

Other Refs:
Primary Examiner: Caldwell, John W.
Assistant Examiner: Wannisky, William M.
Attorney: Smith, Harding, Earley & Follmer