Contact sensing device

Details Contact sensing device Contact sensing device

1982-03-18

1984-07-24

Scott, J. R.

Electricity: circuit makers and breakers

Special application

Stationary feeler detects transient object

H01H 316

Patent

active

044619367

ABSTRACT:
This invention discloses a contact sensing device for detecting the contact of a moving element such as a welding torch attached to a robot arm with a fixed body. The contact sensing device substantially comprises a support-side member, a work-side member, a spherical bearing mounted on either the support-side member or work-side member, a slide shaft slidably mounted on the spherical bearing, the slide shaft being slidable in an axial direction, an elastic member mounted on the slide shaft for making the work-side member biasingly come into contact with the support-side member, at least three rollers mounted on a first surface of either the support-side member or the work-side member, the rollers capable of coming into contact with a second surface of either the support-side member or the work-side member which opposes the first surface, at least one roller engaging member mounted on the second surface on which one of the rollers runs, and a limit switch actuated by the displacement of the slide shaft.

REFERENCES:
patent: 4301338 (1981-11-01), McMurtry

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