Load balancing arm

Details Load balancing arm Load balancing arm

1995-10-10

1997-03-25

Lopez, F. Daniel

Motors: expansible chamber type

Working member position feedback to motive fluid control

Electrical input and feedback signal means

91390, 91428, 177212, 2481621, 248325, 248648, F15B 1316

Patent

active

056134193

ABSTRACT:
A load balancing arm is shown and described as having improved control including a programmable control element and electronic air regulation to provide precise and controllable lifting force on a load. The disclosed load balancing arm responds to slight operator applied force to aid in movement of the load in overcoming system hysteresis, friction and load inertia without requiring the operator to apply a sufficiently large magnitude force to overcome such counteracting forces in the system. The disclosed load balancing arm further includes automatic load weight detection sensors for accommodating variation in load weights while applying a lifting force to the load which substantially equals the weight of the load. This allows the operator to move the load freely throughout a work space.

REFERENCES:
patent: 3259351 (1966-07-01), Olsen
patent: 3554091 (1971-01-01), Spyridakis
patent: 3721416 (1973-03-01), Goudreau
patent: 3880393 (1975-04-01), Watson
patent: 4279192 (1981-07-01), Kleinwaks
patent: 4807518 (1989-02-01), Berchtold et al.

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