Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Browse by Category: Main > Engineering
Class Information
Number: 405/292
Name: Hydraulic and earth engineering > Earth treatment or control > Shoring, bracing, or cave-in prevention > Roof support > Jack > Mobile > Position restoring
Description: Method or apparatus for returning the prop to its initial attitude when it has been relieved of the roof load.










Patents under this class:

Patent Number Title Of Patent Date Issued
7490440 Support device for a rib Feb. 17, 2009
6910834 Mine prop Jun. 28, 2005
6416258 Ground advance shoring system Jul. 9, 2002
5833399 Apparatus for use in forming piles Nov. 10, 1998
5423638 Mine roof supports Jun. 13, 1995
4978248 Advanceable mine roof supports Dec. 18, 1990
4511290 Support frame for underground mining operations Apr. 16, 1985
4474510 Hydraulic mine-roof support Oct. 2, 1984
4324510 Apparatus for supporting a mine roof support assembly Apr. 13, 1982
4268193 Mine roof supports May. 19, 1981
4139326 Mine roof supports Feb. 13, 1979
4117687 Mine roof supports Oct. 3, 1978
3996753 Mine roof support Dec. 14, 1976











 
 
  Recently Added Patents
Systems and methods for unchoked control of gas turbine fuel gas control valves
Methods and systems for delivering customized advertisements
Cleaning device, and image forming apparatus, process cartridge, and intermediate transfer unit each including the cleaning device
Image forming system, prognosis criterion setting apparatus, prognosis apparatus, image forming apparatus and non-transitory computer-readable recording medium
Etching composition
Charged particle source with integrated electrostatic energy filter
Chair
  Randomly Featured Patents
Card connector
FIN field effect transistor with self-aligned gate
Method of testing radiation for a SDRAM
Method of producing blood type checking reagent containing lectin
Method for controlling turbine outlet temperatures in a diesel engine
Variable detector geometry for resolving and sensing apparatus for filtering and other applications
Brake play resetting device
Side channel pump
Computer monitor mirror and note holder
Immunoglobulin conjugates of 2',2'-difluronucleosides