F - Mech Eng,Light,Heat,Weapons – 16 – B
Patent
F - Mech Eng,Light,Heat,Weapons
16
B
F16B 31/02 (2006.01)
Patent
CA 2130127
ABSTRACT OF THE DISCLOSURE A device to monitor tension in a fastener assembly such as a stationary bolt and a moveable nut for securing elements therebetween. The device is in the form of a washer for use in the assembly between the nut and the elements or the bolt head and the elements. In one example, a slot is provided in the surface of the washer and extends radially outwardly from the inner periphery thereof. A recess is formed in the bottom of the slot, creating at least one fulcrum point in the slot. A monitor and indicating strip, for example a spring steel, is located in the slot and, under tension from one of the fastener assembly members, the distal end of the strip rises from the slot to provide a visual and measurable monitor of tension in the assembly. In another example, the monitor strip is located on the surface of the washer and the fulcrum is located on one of the fastener elements, such as on the underside of the nut, for engaging the strip under pressure, causing its distal end to rise.
Gowling Lafleur Henderson Llp
Kramer Hy
LandOfFree
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