Claims
- 1. A gravity actuated automatic closure device, comprising:
- a closure for sealing an opening, said closure being roll mounted above said opening;
- means for holding said closure in a ready position; and
- means for disengaging said holding means said means for disengaging further comprising:
- (a) a pivotally mounted moment arm connected at its first end to said means for holding;
- (b) a release weight at a second end of said moment arm; and
- (c) a plurality of compression springs radially attached to said moment arm below a pivot point on said moment arm.
Parent Case Info
This application is a continuation-in-part of U.S. Ser. No. 681,526, filed Dec. 14, 1984, now abandoned.
US Referenced Citations (10)
Continuation in Parts (1)
|
Number |
Date |
Country |
Parent |
681526 |
Dec 1984 |
|