Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Dock leveler hydraulic circuit










Image Number 2 for United States Patent #5511267.

A dock leveler having a deck assembly, a first hydraulic cylinder to power said deck assembly to a raised position, lip mounted to said deck assembly, and a second hydraulic cylinder for powering said lip into an extended position. An hydraulic power circuit is coupled to the first and second hydraulic cylinders to control movement of said deck and lip. The hydraulic power circuit includes a pump to deliver fluid under pressure, a first valve operatively coupled to the pump to control fluid flow to the first hydraulic cylinder. A second valve is operatively coupled to the second hydraulic cylinder. An adjustable relief valve is coupled to the second valve to prevent a reduction of fluid pressure to the second hydraulic cylinder after the pump has supplied fluid under pressure through the second valve to extend the lip.








 
 
  Recently Added Patents
Semiconductor device having vertical channel
Power converter and method including noise suppression by controlling phase shifting of converter cells
Developing cartridge
Signal routing dependent on a loading indicator of a mobile node
Floor relief for dot improvement
Control unit of a ride level control system, and ride level control system
Display screen with an animated graphical user interface
  Randomly Featured Patents
Integrated fan motor and controller housing
Height adjustable refuse compaction and ejection system
Plank spacer
Video chapter access and license renewal
Direct reduction process in reactor with hot discharge
Method for administering agents to the central nervous system
Connector for automotive audio system
Sofa
Thin computer monitor support apparatus
Automatic speed change control system for vehicle