Abstract: A load balancing hoist constructed to combine the power module and the travel module of the hoist into a single unit to substantially reduce the cost and the length of the hoist without effecting its operation and application.

Abstract: An actuator assembly has a first and second pilot valve. Each valve has inlets in communication with a fluid supply source and outlets in communication with the control valve. An in-line actuator housing disposed between the fluid powered device and a low connector supports the pilot valves. An elongated sleeve being axially slidably mounted over the in-line housing covers the in-line housing. A radially extending actuating member is coupled to the elongated sleeve whereby movement of the sleeve in one direction operates the first pilot valve to provide a fluid pressure necessary to actuate a first portion of the control valve so that fluid pressure is introduced into the fluid-powered device on the front side of the piston, and movement of the sleeve in the opposite direction causes operation of the second pilot valve so that fluid pressure is introduced into the fluid powered device on the back side of the piston causing the fluid powered device to move in a direction opposite of the first direction.

Abstract: The present invention is an actuator assembly for use with the fluid control valve having an inlet in communication with the fluid supply source and an outlet in communication with a fluid powered device. Additionally, the fluid control valve is in communication with at least one adjustable flow control port. The fluid powered device defines a chamber having a pressure driven piston disposed therein. The pressure driven piston has a front side and a back side that substantially divides the chamber of the fluid powered device into two main portions.