Catch device for a roll-up door, grate, grill or the like

Details Catch device for a roll-up door, grate, grill or the like Catch device for a roll-up door, grate, grill or the like

1989-01-10

1990-03-13

Reger, Duane A.

Brakes

Operators

Speed-responsive

188 828, B60T 712

Patent

active

049076795

ABSTRACT:
A catch device to prevent a rapid rotation of the shaft of a roll-up door or the like has a toothed brake wheel received in an asymmetric clamping ring in a housing. A pawl on the clamping ring engages in a toothed recess of the brake ring at excessive speeds of the wheel to entrain the clamping ring and wedge the latter against the housing.

REFERENCES:
patent: 3016113 (1962-01-01), Easley
patent: 4015696 (1977-04-01), Lichti

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