Patent · US Expired

Hydraulic brake booster

US4311085A · kind A · utility

7Cited by
5References
2Claims
0Family size

Assignee

Inventor

Key dates

Filing dateNov 16, 1979
Grant dateJan 19, 1982
Priority date—
Expiry dateNov 16, 1999

Classification

  • Technology area (CPC B)Performing Operations; Transporting
  • CPC primaryB60T13/162
  • WIPO fieldTransport
  • WIPO sectorMechanical engineering

Abstract

A hydraulic brake booster includes a housing 12 with a first chamber 40 and a second chamber 42. An input member 54 extends into the first chamber 40 and is exposed to the second chamber 42. The input member is movable within the first chamber 40 to increase fluid pressure within the second chamber 42 and this fluid pressure operates a control valve 90 to communicate fluid pressure to the first chamber 40. The fluid pressure in the first chamber 40 acts against the input to bias the same toward the second chamber 42. An output member 70 is movable in response to the fluid pressure within the second pressure chamber 42 to actuate braking.

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