Load transfer apparatus

Details Load transfer apparatus Load transfer apparatus

2006-03-07

2006-03-07

Miller, William L. (Department: 3677)

Expanded, threaded, driven, headed, tool-deformed, or locked-thr

Tensioned along the longitudinal axis by a coaxial force...

C411S434000

Reexamination Certificate

active

07008156

ABSTRACT:
A first load-receiving member having a cylinder and a screw hole through which a bolt is thread-engaged and a second load-receiving member having a piston and a fastening face that is made in contact with a member to be fastened are attached to a nut, and a number of balls made of steel the surface of which is lubricated by grease are loaded into a pressure chamber that is formed as a compartment by the cylinder and the piston. Since these balls exert fluidity in the pressure chamber, a load applied to the balls is transmitted to the cylinder and the piston through the balls by screwing the input bolt. Thus, the first load-receiving member is moved in the axis direction with respect to the second load-receiving member, thereby applying a tensile force to the bolt.

REFERENCES:
patent: 2213992 (1940-09-01), Morse
patent: 2610614 (1952-09-01), Sedgwick
patent: 4927305 (1990-05-01), Peterson, Jr.
patent: 5339693 (1994-08-01), Rowlands et al.
patent: 5468106 (1995-11-01), Percival-Smith
patent: 6251197 (2001-06-01), Toda
patent: 0 365 157 (1990-04-01), None
patent: 2247928 (1992-03-01), None

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