Resources Contact Us Home
Browse by Category: Main > Engineering
Class Information
Number: 137/247.21
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 > Ball valve
Description: Apparatus in which the valve is a substantially spherical element.

Sub-classes under this class:

Class Number Class Name Patents
137/247.23 Seats vertically up 7

Patents under this class:

Patent Number Title Of Patent Date Issued
8256444 Check ball valve assembly with check ball guide Sep. 4, 2012
7976701 Drain trap Jul. 12, 2011
7854238 Conduit trap and condensation recovery device Dec. 21, 2010
7823601 Drain trap Nov. 2, 2010
7500968 Unidirectional urine collection reservoir Mar. 10, 2009
6192915 Sewerage inlet Feb. 27, 2001
5901731 Reverse osmosis drain coupling and method of installing May. 11, 1999
4726392 Drainage canal Feb. 23, 1988
4614480 Liquid pumping system Sep. 30, 1986

  Recently Added Patents
Collaborative computing community role mapping system and method
Autonomous adaptation of transmit power
System for and method of providing single sign-on (SSO) capability in an application publishing environment
Soybean EF1A promoter and its use in constitutive expression of transgenic genes in plants
System and methods for facilitating and documenting user thinking and learning using enhanced interactive constructs
Quantitative oxygen imaging systems and methods using echo-based single point imaging
Center spreader adapter tool for toilet paper rolls and paper towel rolls that do not have inner cardboard tubes
  Randomly Featured Patents
Transfer system for an invalid patient
Resilient linkage means for use in vehicle fluid pressure braking systems
Apparatus for the application of fluoropolymer coating to internally threaded fasteners
Guitar neck
Measuring system and method for performing luminometric series analyses as well as multiple cuvette for receiving liquid samples therefor
Method of manufacturing a magnetic recording medium
Polymeric structure having improved barrier properties and method of making same
Micronaire, maturity and fineness measurements via continuous compression air flow permeability measurements
Extendable data storage library employing double gripper picker mechanism
Technique for adjusting a phase relationship among modulation symbols