Four bar linkage actuator

Details Four bar linkage actuator Four bar linkage actuator

1984-03-19

1986-04-08

Larson, Lowell A.

Metal deforming

With means to drive tool

With means to permit tool positioning

72450, 72455, 72481, 74 96, 100228, 100238, B21S 1300

Patent

active

045804362

ABSTRACT:
A four bar linkage is movable from a first position to a second position by a continuous motion of a linear actuator. The linkage comprises a first leg and a second leg shorter than the first leg spaced from and parallel to the first leg in the first position. The first and second legs are supported at their lower end by being pivotally attached to a base, and the upper ends of the first and second legs pivotally support an upper platen at their upper end. The first and second legs, the base, and the upper platen comprise the elements of a four bar linkage. The linkage is translated from a first position where the first and second legs are parallel and extend vertically upward to a second position wherein the platen is rotated up to 90.degree. or more and is displaced laterally from the base and can face to the side and upward allowing access to the base and the upper platen from overhead.

REFERENCES:
patent: 2680881 (1954-06-01), Mock
patent: 2869177 (1959-01-01), Jurgeleit
patent: 3154009 (1964-10-01), Dewyer
patent: 3641929 (1972-02-01), Ballard
patent: 3651754 (1972-03-01), Forest
patent: 4329867 (1982-05-01), Nelson

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