Resources Contact Us Home
Browse by Category: Main > Engineering
Class Information
Number: 137/247.19
Name: Fluid handling > With liquid valves or liquid trap seals > Liquid seal in liquid flow line; flow liquid forms seal > Valves > Line condition change responsive > Pivoted valve
Description: Apparatus in which the valve is pivoted.

Patents under this class:

Patent Number Title Of Patent Date Issued
6543470 Flexible trap for drains Apr. 8, 2003
6279601 Liquid zone seal Aug. 28, 2001
4555820 Drain pipe system Dec. 3, 1985
4215716 One-way conduit closure Aug. 5, 1980
4074686 Manually closable anti-backup trap Feb. 21, 1978

  Recently Added Patents
Magnetic recording medium, information storage device, and method of manufacturing magnetic recording medium
Coordinated garbage collection for raid array of solid state disks
Self-assembling surface coating
Mixed reactant flow-by fuel cell
Single check memory devices and methods
Information recording medium and information processing method for accessing content with license or copyright protection
  Randomly Featured Patents
Protective overcoats for photographic elements
Diene rubber composition
Pressure sensitive reinforcement tape for loose leaf sheet
Train tunnel ventilation method and apparatus
Submicron lignin dispersions
Combined biological and ballasted flocculation process for treating wastewater
Textile machine with a drafting arrangement
Circuit arrangement for time division multiplex data transmission with a bus system
Method for producing blister copper
Fixed-frequency beam-steerable leaky-wave microstrip antenna