Resources Contact Us Home
Browse by Category: Main > Engineering
Class Information
Number: 137/55
Name: Fluid handling > Speed responsive valve control > Centrifugal mass type (exclusive of liquid) > Periodically actuated valve
Description: Control systems wherein the valves or valve are periodically and continually opened and closed, the governor being effective to vary the period and/or the extent of opening.

Patents under this class:

Patent Number Title Of Patent Date Issued
8271141 Control valve system with cycle monitoring, diagnostics and degradation prediction Sep. 18, 2012
7503203 Rotary valve and analytical chromatographic system using the same Mar. 17, 2009
6491105 Cross-over housing for gas lift valve Dec. 10, 2002
6154144 Auto shutoff overflow controller Nov. 28, 2000
5752483 Governor arrangement May. 19, 1998

  Recently Added Patents
Method, apparatus and computer program product for providing metadata entry
Stacked structure and stacked method for three-dimensional chip
Terminal device, system and computer readable medium
Transferring a document
Externally gapped line arrester
Signal routing dependent on a loading indicator of a mobile node
Method for manufacturing photoelectric conversion device
  Randomly Featured Patents
Polyester film for laminated metal sheet drawing and processing containing solid lubricant and having specified protrusion rate
Method and apparatus for simplified audio authentication
High-frequency prestage and receiver
Laptop computer base
Seal for rollers
Headgear for a respiratory mask
A scanning device producing a first and a second scanning spot which move in different directions and an apparatus containing that device which uses the first spot for reading and/or recording
Thumb twiddle operated amusement device
Heel insert for a shoe sole
1xN reflector switch