Patent · US Expired

Hydraulic distributor, particularly for a power-assisted steering system for a vehicle

US4765369A · kind A · utility

3Cited by
4References
6Claims
0Family size

Assignee

Inventor

Key dates

Filing dateMay 27, 1987
Grant dateAug 23, 1988
Priority date
Expiry dateMay 27, 2007

Classification

  • Technology area (CPC Y)Emerging Cross-Sectional Technologies
  • CPC primaryY10T137/86638
  • WIPO fieldTransport
  • WIPO sectorMechanical engineering

Abstract

The hydraulic distributor, of the type comprising, in each of two parallel circuits (.alpha., .alpha.'), between a pressure source (S) and a tank (R), two modulable restrictions in series (A, B; A', B'), comprises in addition, in each circuit (.alpha., .alpha.'), a first (C; C') and a second (D; D') fixed restriction adapted to be put into operation alternately in synchronism with the modulable restrictions downstream of each of the latter, the fixed restriction put into operation being the one directly downstream of the modulable restriction operated in its closing direction.

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