Apparatus for bi-directionally moving and placing large and heav

Details Apparatus for bi-directionally moving and placing large and heav Apparatus for bi-directionally moving and placing large and heav

1989-02-03

1990-05-08

Brown, David H.

Implements or apparatus for applying pushing or pulling force

Step-by-step traveling bar

254111, B66F 104, B66F 324

Patent

active

049231740

ABSTRACT:
An improved portable apparatus for moving and precisely placing a large and heavy object includes load support rails, aligned pairs of anchoring structures secured to and spaced longitudinally from one another along the rails, an actuator-supporting shoe movable along the support rails having lugs for releasably engaging one pair of the anchoring structures to hold the shoe in a stationary position, and an actuator extending between and connecting the shoe with the load movably supported on the rails. The improvements relate to the configuration of the shoe and to a pair of reinforced spaced anchoring pins which allow engagement with one or the other pin by the lugs on the shoe by merely reversing, or rotating 180.degree., the position of the shoe on the rails. In one position of the shoe with its lugs engaged with one of the pins, retraction of the actuator will produce movement of the load in one direction. In the reversed position of the shoe with its lugs engaged with the other of the pins, extension of the actuator will produce movement of the load in the opposite direction.

REFERENCES:
patent: 3031167 (1962-04-01), Roussel
patent: 3140076 (1964-07-01), Steadman
patent: 3510012 (1970-05-01), Van Meteren
patent: 3659823 (1972-05-01), Griffin
patent: 4066110 (1978-01-01), Sarno
patent: 4212450 (1980-07-01), Lambert
patent: 4311429 (1982-01-01), Wallis

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