Resources Contact Us Home
Expansible chamber device having variably restrained valve systems

Image Number 7 for United States Patent #5111843.

In accordance with an illustrative embodiment of the present invention, an expansible chamber device includes a piston movable within a cylinder, a head on the cylinder having intake and exhaust ports, a normally-open intake valve for closing the intake port automatically when the flow rate or velocity of a working medium entering the cylinder reaches a predetermined value, variable restraining means for inhibiting closing of the intake valve in response to flow, an exhaust valve for preventing excape of working medium from the cylinder until cylinder pressure is reduced to a set level, spring means for opening the exhaust valve at that level, and means operable near the top-dead-center position of the piston for automatically opening the intake valve and for closing the exhaust valve to enable the cycle to repeat. A unique system for controlling the variable restraining means, as well as methods for regulating the flow or working medium through said valves, also is disclosed.

  Recently Added Patents
Generating network topology parameters and monitoring a communications network domain
Polar nematic compounds
Combination therapy to enhance NK cell mediated cytotoxicity
Rose plant named `ESM R044`
Linked area parameter adjustment for spinal cord stimulation and associated systems and methods
Systems and methods for sensing external magnetic fields in implantable medical devices
Surface acoustic wave resonator for down-hole applications
  Randomly Featured Patents
Container having a snap fit selectively detachable lid
Audio-video control system
Method for a mixed voice and data device in a home communications network
Belt tensioner and method of making the same
Drape rod assembly
Extruded plastic slat
Process and apparatus for low pressure chemical vapor deposition of refractory metal
Method and device for adjusting air ratio
Hardening photographic layers containing silver halide with a 1-sulphonyl-4-amino-pyridinium salt