Anti-rotation positioning mechanism

Details Anti-rotation positioning mechanism Anti-rotation positioning mechanism

1991-07-01

1992-10-20

Bonck, Rodney H.

Machine element or mechanism

Control lever and linkage systems

Multiple controlling elements for single controlled element

901 15, 901 28, G05G 1100

Patent

active

051560623

ABSTRACT:
An apparatus for maintaining the angular position of a platform during motion of the platform in any direction relative to a base. The apparatus includes a static base, a platform, a first arm assembly, a second arm assembly and a third arm assembly. Each arm assembly has one terminal portion connected to a portion of the static base, by a universal joint, and another terminal portion, connected to the platform, by another universal joint. Each arm assembly is so constructed to permit changes in the distance between its universal joints, but concomitantly removes a degree of angular freedom from the platform. The angular position of the platform is thereby maintained when the distance between the respective universal joints is changed.

REFERENCES:
patent: 4651589 (1987-03-01), Lambert
patent: 4806068 (1989-02-01), Kohli et al.
patent: 4976582 (1990-12-01), Clavel

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