Safety disk assembly

Details Safety disk assembly Safety disk assembly

F - Mech Eng,Light,Heat,Weapons

16

B

85/5, 116/66

F16B 31/02 (2006.01) F16B 13/06 (2006.01)

Patent

CA 1105779

ABSTRACT OF THE DISCLOSURE A safety disk assembly is used is determining when a predetermined force is exerted in tightening a nut, bolt or similar fastening member to a base structure. The safety disk assembly is positioned between a fastening part, such as a nut, and the surface of the base structure. The safety disk assembly includes a first disk and a second disk with a shear pin inter- connecting them. Additional shear elements can be used in the assembly. Preferably, a thin layer of Teflon is positioned between the disks. When a torque is applied to the fastening member, the shear pin or elements break when a predetermined breaking point is reached. The friction coefficients of the disk surfaces and the effective radii of the disks are selected to provide the predetermined break point characteristics. When the shear pin breaks one of the disks can move relative to the other. An indicator is incorporated into the safety disk assembly to show when the predetermined break point has been exceeded.

282786

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