Patent · US Active

Hydraulic system with engine anti-stall control

US7484814B2 · kind B2 · utility

8Cited by
7References
19Claims
0Family size

Assignee

Inventor

Key dates

Filing dateMar 3, 2006
Grant dateFeb 3, 2009
Priority date—
Expiry dateSep 11, 2027

Classification

  • Technology area (CPC F)Mechanical Engineering; Lighting; Heating
  • CPC primaryF15B2211/7053
  • WIPO fieldHandling
  • WIPO sectorMechanical engineering

Abstract

A hydraulic system has first and second functions in which separate control valves govern the flow of fluid between actuators and both a supply conduit and a return conduit. The second function is connected to a load sense passage. When pressure in the load sense passage exceeds a given level an anti-stall valve opens a restricted path between the supply and return conduits. Fluid flow through that restricted path reduces a likelihood that a prime mover driving the pump of the hydraulic system will stall. When only the first function is active the anti-stall valve is closed and does not affect the supply of fluid to that function.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.