Resources Contact Us Home
C.H. Perrott, Inc. Patents
C.H. Perrott, Inc.
Portland, OR
No. of patents:

Patent Number Title Of Patent Date Issued
5797419 Sewer line trap priming assembly and antisiphoning conduit component therefor August 25, 1998
An automatic sewer line trap priming assembly including a gap type, anti-siphoning conduit component. A shielded and directed jet at timed intervals directs priming water increments into a receiving funnel which communicates with the trap.
5678588 Sewer line multiple trap priming system and method October 21, 1997
A sewer line multiple trap priming system comprises a house line and a plurality of branch lines all communicating with each other and supplied with water under pressure. A plurality of makeup priming water lines are connected, one to each of the traps. In all but one of the branch lines
5263508 Sewer line water trap charging valve with improved adjustment for house line pressure changes November 23, 1993
A device for charging sever line traps automatically upon decrease in main line water pressure comprising a branch line having a piston valve member telescopically received over the end of an adjustable tubular member, the piston having a first seat for sealing engagement with the end of
5253670 Multiple drain trap primer valve assembly for sewer lines October 19, 1993
A multiple drain trap primer valve assembly. The assembly comprises a plumbing conduit system including a house line 10 carrying water under pressure and a plurality of branch lines 12 each serving the drain trap 14 of a particular plumbing fixture. A manifold 26 having multiple discharg
4926897 Automatic fluid pressure equalizing valve May 22, 1990
A valve for proportioning hot and cold water flow in response to the pressure balance between the hot and cold water supply lines includes a piston which adjusts position in response to variation in the pressure ratio of the hot and cold water supplied to the valve, thereby maintaining
4712574 Vacuum-breaking valve for pressurized fluid lines December 15, 1987
For use in pressurized fluid lines, an anti-siphon and back-flow prevention valve. A conduit is tapped into the line upstream of an outlet terminating in a ball-shaped housing. The housing receives check valve means arranged for insuring that fluid does not escape during normal operation

  Recently Added Patents
Phosphoinositide 3-kinase inhibitor with a zinc binding moiety
Power device and method of packaging same
Systems and methods for sorting particles
Systems and methods for providing live voicemail to a mobile handset
Device and method for unified codes
Method and apparatus for editing a program on an optical disc
Testing SQL query writing skills
  Randomly Featured Patents
Communications cable interconnection apparatus and associated method for an open office architecture
Apparatus for latching and ejecting cartridges from a cartridge tape drive in a storage library system and detection system therefor
Dialysis connector and cap having an integral disinfectant
Trapezium prosthesis
Operating method for gas turbine with variable inlet vanes
Particle beam treatment device and irradiation dose setting method of the particle beam treatment device
Neural stimulation system providing auto adjustment of stimulus output as a function of sensed impedance
Audio visual device
Method of overtone selection and level control in an integrated circuit CMOS negative resistance oscillator to achieve low jitter
Sheet processing apparatus and image forming apparatus including same