Resources Contact Us Home
Browse by Category: Main > Engineering
Class Information
Number: 137/288
Name: Fluid handling > Hydrant type > Movable riser actuated valve > Reciprocating riser > Piston type valve
Description: Apparatus in which the valve is a piston cooperating with one or more ports in a cylindrical valve seat.

Patents under this class:

Patent Number Title Of Patent Date Issued
8408238 Yard hydrant with improved valve Apr. 2, 2013
6178988 Hydrant design Jan. 30, 2001
5289840 Yard hydrant Mar. 1, 1994
4372339 Yard hydrant Feb. 8, 1983
4109671 Sanitary yard hydrant Aug. 29, 1978

  Recently Added Patents
Spoofing detection for civilian GNSS signals
Method for producing vinyl acetate monomer
Three-dimensional filter
Image enhancement based on multiple frames and motion estimation
Apparatus and method for scrolling a screen of a portable terminal having a touch screen
Redundant parallel operation of motor vehicle electrical system generators
Computer network running a distributed application
  Randomly Featured Patents
Apparatus and method for controlling fluid delivery temperature in a dispensing apparatus
Data processing system having a performance control pulse with a variable duty cycle for controlling execution and non-execution of instructions
Drilling bit
Angiogenic growth factors for treatment of peripheral neuropathy
Coupling of a tube to a ring member
Servo-assisted rolling stand
Long-stroke voice coil linear actuator
Transmission of orthogonal circular polarizations on a fiber
Process for recycling plastic container scrap
Epoxy, epoxy system, and method of forming a conductive adhesive connection