Retracting screw assembly

Details Retracting screw assembly Retracting screw assembly

F - Mech Eng,Light,Heat,Weapons

16

B

190/71

F16B 43/00 (2006.01) F16B 41/00 (2006.01) F16B 21/18 (2006.01)

Patent

CA 2012440

ABSTRACT A retracting screw assembly 10 for maintaining a screw 12 in the retracted position so that flame proof surface 28 is not scratched during opening and closing cover 18. Retracting screw assembly is comprised of a screw 12 with a threaded portion 34, washer 14, conical spring 16. When threaded portion 34 is disengaged from body portion 26, conical spring 16 pulls screw 12 into a retracted position so that threaded portion 34 rests against shoulder 20.

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