F - Mech Eng,Light,Heat,Weapons – 16 – B
Patent
F - Mech Eng,Light,Heat,Weapons
16
B
85/5
F16B 31/00 (2006.01) F16B 31/02 (2006.01) F16B 13/06 (2006.01)
Patent
CA 1096668
ABSTRACT OF THE DISCLOSURE In an expansion dowel assembly, a stud or bolt extends through an expansion sleeve with an expending body on one end for radially spreading the sleeve and a head or first working part on the other end for applying torque. A second working part encloses the first working part and is attached to it by one or more shear members. Torque for anchoring the sleeve in a borehole is applied through the second working part to the first working part and the stud. When a preset torque is reached, the shear members break and the second working part can move relative to the first working part without transmitting torque to tile stud. A separating member is provided between the first and second working parts and after the preset torque is attained, further torque cannot be applied to the stud until the separating member is removed. Preferably, the separat- ing member consists of a flange with outstanding fingers which are in contact with the surface of the first working part against which a torque applying tool is placed. Removal of the fingers is necessary before torque can be applied to the first working part.
292111
Entner Josef
Seghezzi Hans D.
Hilti - Aktiengesellschaft
Rolston George A.
LandOfFree
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