Resources Contact Us Home
Dual-piston acuator

Image Number 8 for United States Patent #4882979.

A fluid-powered actuator having a body with first and second end walls, with a bulkhead positioned therebetween, which is adjustably rotatable to angularly position the bulkhead relative to the body for fluid-powered operation to establish the end limits of rotation of an output shaft. The actuator has first and second piston heads disposed in the body on opposite sides of the bulkhead to define four fluid-tight chambers. In the preferred embodiment, the bulkhead is selectively clamped between two sidewall portions. A sleeve extends between and fixedly connects the piston heads together. A plurality of guide rods are fixedly attached to and extend between the piston heads and through apertures in the bulkhead in one embodiment, and between the first piston head and the bulkhead and through apertures in the first piston head in another embodiment to transmit torque to the body and through the bulkhead. An alternative embodiment has an eccentric piston sleeve projecting through a correspondingly sized and shaped aperture in the bulkhead to transmit torque. Seals are provided to prevent fluid leakage between the four fluid-tight chambers.

  Recently Added Patents
Virtual links in a routed ethernet mesh network
Automatic stop and restart device for an engine
Systems, devices, methods, and compositions including fluidized x-ray shielding compositions
Emulsions containing arylboronic acids and medical articles made therefrom
Integrated circuit packaging system with heat slug and method of manufacture thereof
Gathering user feedback in web applications
Plants and seeds of hybrid corn variety CH424126
  Randomly Featured Patents
Optical recording medium and method of manufacturing thereof
Transplanting implement
Systems and methods for blood glucose sensing
Fluid discharge device, control method for a fluid discharge device, and a fluid tank
Pharmaceutical compositions containing a saccharase inhibitor
Voice-capable system and method for providing input options for authentication
Control valve device
Semiconductor integrated circuit device
Three part ball bearing slide with lockable intermediate slide member