Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Browse by Category: Main > Engineering
Class Information
Number: 137/315.31
Name: Fluid handling > With repair, tapping, assembly, or disassembly means > Assembling or disassembling reciprocating valve > Gate valve > Having particular valve seat
Description:










Sub-classes under this class:

Class Number Class Name Patents
137/315.32 Including seal 5


Patents under this class:

Patent Number Title Of Patent Date Issued
5464035 Gate-type, side-ported, line blind valve Nov. 7, 1995
5247960 Replacement valve seat device with expandable ring Sep. 28, 1993
4909272 Gate valve Mar. 20, 1990
4765361 Ported gate valve Aug. 23, 1988
4744386 Modular hydraulic actuator May. 17, 1988
4541453 High temperature slide valve Sep. 17, 1985
4474205 Sliding blade apparatus for closing conduits Oct. 2, 1984
4378817 Slide valve assembly Apr. 5, 1983
4316483 Valve having wear-prone parts removable through bonnet area Feb. 23, 1982
4307747 Dust trap with removable valve seat Dec. 29, 1981











 
 
  Recently Added Patents
Semiconductor device
Integrated circuit devices having conductive structures with different cross sections
Bioelectric battery for implantable device applications
Method for restricting the use of an application program, system for authenticating the user of a measuring apparatus, authentication server, client apparatus and storage medium
System and method for broadcasting rich media to devices over multiple carriers
Compound semiconductor epitaxial structure and method for fabricating the same
Developing device
  Randomly Featured Patents
Expanded memory addressing scheme
Method and apparatus for providing control channels and message channels in a radio communication system
Hip mounted exercising device with precision tether adjuster
Combined supercharger and carburetion system for internal combustion engine
Separation band detecting circuit in an automatic program selection record player
Personal security system
Bar code scanner laser emission reduction
Method and on-chip apparatus for continuity testing
Optical disc, recording device and reproducing device
Connector