Device for the movement and positioning of an element in space

Details Device for the movement and positioning of an element in space Device for the movement and positioning of an element in space

1989-09-06

1990-12-11

Spar, Robert J.

Material or article handling

Vertically swinging load support

Grab

901 23, 901 28, 248179, 108 20, 108138, 74479, B25J 912

Patent

active

049765825

ABSTRACT:
The device comprises a base element (1) and a movable element (8). Three control arms (4) are rigidly mounted at their first extremity (15) on three shafts (2) which may be rotated. The three assemblies each formed by a shaft (2) and an arm (4) are the movable parts of three actuators (13) of which the fixed parts (3) are integral with the base element. The other extremity (16) of each control arm is made integral with the movable element through two linking bars (5a, 5b) hingedly mounted on the one hand to the second extremity (16) of the control arm and, on the other hand, to the movable element. The inclination and the orientation in space of the movable element remain unchanged, whatever the motions of the three control arms may be. The movable element supports a working element (9) of which the rotation is controlled by a fixed motor (11) situated on the base element. A telescopic arm (14) connects the motor to the working element.

REFERENCES:
patent: 2286571 (1942-06-01), Pollard
patent: 3419238 (1968-12-01), Flory
patent: 4407625 (1983-10-01), Shum
patent: 4435116 (1984-03-01), Van Deberg
patent: 4569627 (1986-02-01), Simunovic
patent: 4651589 (1987-03-01), Lambert
patent: 4712971 (1987-12-01), Fyler
Mechanisms, Linkages, and Mechanical Controls, Nichols P. Chironis, copyright 1965, Scientific Library U.S. PTO, pp. 326-329.

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