Disc switch

Details Disc switch Disc switch

1974-10-29

1977-01-25

Smith, Jr., David

Electricity: circuit makers and breakers

Weight

128423W, 340272, H01H 314

Patent

active

040052966

ABSTRACT:
Apparatus adapted for cooperation with the human foot for performing a switching function in response to ambulation. A substrate is provided with a generally centrally located contact. Posts extend from the substrate and space a flexible disc from the contact while allowing the central portion of the disc to flex into electrical communication therewith. The assembly may be positioned in the heel portion of a shoe insole so as to switch between open and closed positions as weight is placed on the heel and removed, as in walking. The switch may be employed in association with muscle and/or nerve stimulators for objectives such as combating foot drop or providing hip stabilization. In addition, proper selection of the flexible disc and post spacing will provide a normally open switch which will close when a preselected limb load has been applied. Also, the apparatus may be made bi-directional such that the same insole assembly may be employed with either foot.

REFERENCES:
patent: 3083712 (1963-04-01), Keegan, Jr.
patent: 3204637 (1965-09-01), Frank et al.
patent: 3209089 (1965-09-01), Weissburg
patent: 3688066 (1972-08-01), Adelson et al.
patent: 3702999 (1972-11-01), Gradisar
patent: 3777086 (1973-12-01), Riedo
patent: 3806673 (1974-04-01), Boulanger
patent: 3808384 (1974-04-01), Boulanger
patent: 3811025 (1974-05-01), Bach

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