F - Mech Eng,Light,Heat,Weapons – 16 – B
Patent
F - Mech Eng,Light,Heat,Weapons
16
B
F16B 31/02 (2006.01) F16B 41/00 (2006.01)
Patent
CA 2240801
A tamper-proof, precision, torque limiting nut device is disclosed. The device comprises an inner collar member having a threaded bore to receive a bolt, stud or the like and an outer sleeve member interconnected to the collar by pins or by welds having a shear strength up to a predetermined torque value. The nut can be tightened on a bolt or stud up to the predetermined shear value, above which the pins or welds shear, to achieve tightening of the nut to the desired torque without the use of a torque wrench. Overtorquing and undertorquing are prevented, and tampering with the nut is substantially obviated.
Gibbons Rodney
Gowling Lafleur Henderson Llp
LandOfFree
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