Expandable and contractable arms

Details Expandable and contractable arms Expandable and contractable arms

1984-08-24

1987-12-15

Spar, Robert J.

Material or article handling

Vertically swinging load support

Grab

74 8915, 74501R, 148402, 414728, 414749, 901 14, 901 21, 901 22, 901 23, 901 28, B25J 906

Patent

active

047129697

ABSTRACT:
An expandable and contractable arm is constituted by a plurality of expandable and contractable units and connecting devices including universal joints for serially interconnecting the units into the arm. Each unit includes at least three expandable and contractable operating members in the form of link mechanisms or double thread type expandable and contractable rods, and actuating devices for equally or unequally expanding and contracting the operating members so as to increase or decrease distances between the connecting members while maintaining them in parallel or inclined with respect to each other.

REFERENCES:
patent: 2286571 (1942-06-01), Pollard
patent: 2725578 (1955-12-01), Keller
patent: 3034765 (1962-05-01), Ludowici
patent: 3160290 (1964-12-01), Wilson
patent: 3261479 (1966-07-01), Baker et al.
patent: 3580099 (1971-05-01), Mosher
patent: 3631737 (1972-01-01), Wells
patent: 4070807 (1978-01-01), Smith, Jr.
patent: 4088203 (1978-05-01), Smith, Jr.
patent: 4393728 (1983-07-01), Larson et al.
patent: 4489826 (1984-12-01), Dobson
patent: 4494417 (1985-01-01), Larson et al.
patent: 4551061 (1985-11-01), Olenick
patent: 4566843 (1986-01-01), Iwatsuka et al.
Rosheim--"A New Pitch-Yaw-Roll Mechanical Robot Wrist Actuator"--Jun. 1985--21 pgs.--Soc. of Manuf. Eng.

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