Slow-acting rotary shaft device

Details Slow-acting rotary shaft device Slow-acting rotary shaft device

1993-11-18

1995-01-17

Reese, Randolph A.

Joints and connections

Articulated members

Pivoted

403 92, 403113, 403117, 16308, 16376, 248923, F16C 1100

Patent

active

053821084

ABSTRACT:
In a slow-acting rotary shaft device, a shaft, which rotatably supports a second member, includes a hollow shaft body latched to a first member inrotatably, a cap member outwardly inserted on an end portion of the shaft body rotatably and latched to the second member inrotatably, a torsion bar which has one end latched with the shaft body and another end latched with a cap member, and a viscous grease enclosed between the shaft body and cap members. The hollow shaft body is divided into two portions, a body portion of which latches to one of the end portions of the torsion bar. In opposite surfaces of the two portions, a projection formed at one surface and a concave portion formed at another surface are loosely inserted and provided with a relatively rotatable race area. When this device is used, the rotative member is rotated at a slow speed by a jumping up torque of the torsion bar in a rotation area up to a neutral point, while in a rotation area past the neutral point, the rotative member can be stopped at any position.

REFERENCES:
patent: 2587168 (1952-02-01), Kessler
patent: 3022536 (1962-02-01), Floehr
patent: 3787923 (1974-01-01), Peterson
patent: 4408799 (1983-10-01), Bowman

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