Patent · US Expired

Fluid pressure drive device

US4175589A · kind A · utility

98Cited by
6References
10Claims
0Family size

Assignee

Inventors

Key dates

Filing dateMay 26, 1977
Grant dateNov 27, 1979
Priority date
Expiry dateMay 26, 1997

Classification

  • Technology area (CPC Y)Emerging Cross-Sectional Technologies
  • CPC primaryY10T137/86614
  • WIPO fieldMechanical elements
  • WIPO sectorMechanical engineering

Abstract

A fluid pressure drive device including a primary drive portion operated by receiving an operational command, and a secondary drive portion operated due to the operation of the primary drive portion. In this fluid pressure drive device, at least parts of movable members in the above both drive portions are overlapped so as to shorten the lengths of fluid passages. As a result, a time interval from the receiving of an operational command until the generation of a drive force in the final drive portion, i.e., a response time of the drive device may be shortened.

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