Cradle assembly for a moveable arm support system

Details Cradle assembly for a moveable arm support system Cradle assembly for a moveable arm support system

1991-10-17

1993-09-21

Chin-Shue, Alvin C.

Supports

Armrest or headrest

Armrest for writer

A47B 2100

Patent

active

052461912

ABSTRACT:
A floating cradle assembly for an arm support system is provided with a yoke having cam surfaces and crank-controlled followers arranged to ride along the cam surfaces as the cradle moves vertically with respect to the yoke. As a result, the user of the arm support system experiences as uniform upward biasing force, and the yoke will not bind within the cradle housing. Different cam surface configurations will also result in different magnitudes of the uniform upward biasing force to accommodate the user's comfort.

REFERENCES:
patent: 1945419 (1934-01-01), Brown
patent: 2403654 (1946-07-01), Gerdes
patent: 3179364 (1965-04-01), Jackson et al.
patent: 3973748 (1976-08-01), Nagasaka
patent: 4163536 (1979-08-01), Heller et al.
patent: 4822103 (1989-04-01), Stenvall
patent: 5058840 (1991-10-01), Moss et al.
Design News, Nov. 4, 1985, reprint, Counterbalance Torque is Adjustable, Compact, 4 pages.

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