Safety device for apparatus having relatively movable members

Details Safety device for apparatus having relatively movable members Safety device for apparatus having relatively movable members

1986-03-13

1987-09-22

Goldberg, E. A.

Electrical resistors

Mechanically variable

Movable contact electrically adjustable over length of...

338176, 338198, 338199, 338200, H01C 1038

Patent

active

046958207

ABSTRACT:
In electrical control apparatus having a first member disposed in an opening in a second member, the first and second members being adapted and arranged for relative movement with respect to each other, a safety device for covering the open portions of the opening as the first member moves relative to the opening. A primary shield is located adjacent to and overlaps the opening. The primary shield is operatively associated with the first member for movement in response to relative movement of the first member. The primary shield has a shape adapted to permit unrestrained movement of the first member while overlapping the open portions of the opening to cover those portions for all positions of the first member in the opening.

REFERENCES:
patent: 3746923 (1973-07-01), Spira et al.
patent: 4085399 (1978-04-01), Wall
patent: 4104606 (1978-08-01), DeWitt
patent: 4117445 (1978-09-01), Forman et al.
patent: 4520306 (1985-05-01), Kirby

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