Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
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
Methods and apparatus for dynamic identification (ID) assignment in wireless networks
Managing and collaborating with digital content
Thermochromic microparticles, dispersions thereof, and manufacturing method thereof, as well as light-modulating coatings, light-modulating films and light-modulating inks
Helmet mandible
Method of fabricating CIGS by selenization at high temperature
Resin composition, prepreg, resin sheet, metal-clad laminate, printed wiring board, multilayer printed wiring board and semiconductor device
Process for producing .beta.-sialon fluorescent material
  Randomly Featured Patents
Process of preparing microparticulate collagen, collagen-based products thereby and method of applying same
Method for increasing stability and bake absorption of a bread baking wheat flour and resulting dough
Method and apparatus for increasing compressed air efficiency in a pump
Vehicle with individually suspended wheels
Expandable and retrievable stent
Hybrid one-step immunochromatographic device and method of use
Portable tester for measuring slip resistance
Method and arrangement for operating an internal combustion engine
Apparatus for delivering harmonic inductive power
Magnetic resonance guided ultrasound therapy system with inclined track to move transducers in a small vertical space