Catch device for a roll-up door, grate, grill or the like
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Mar 13, 1990
Grant Date -
N/A
app pub date -
Jan 10, 1989
filing date -
Jan 10, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
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.
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