Patent · US Expired

Hydraulic circuit for traveling

US6648091B2 · kind B2 · utility

10Cited by
5References
5Claims
0Family size

Assignee

Inventor

Key dates

Filing dateOct 1, 2001
Grant dateNov 18, 2003
Priority date
Expiry dateOct 1, 2021

Classification

  • Technology area (CPC F)Mechanical Engineering; Lighting; Heating
  • CPC primaryF16H2063/3033
  • WIPO fieldMechanical elements
  • WIPO sectorMechanical engineering

Abstract

If a hydraulic motor (23) (traveling wheel (27)) is rotated (or skidding) at high rate, and a hydraulic motor (24) is hardly rotated, a detection controller (68) compares the rotational speeds of both hydraulic motors (23, 24). Then the rotation detected by the rotation detectors (66, 67) to detect the traveling wheel (27) to be skidding, and moves a piston (71) to allow a negative brake (40) to give a braking force to the hydraulic motor (23), and rotate the hydraulic motor (24). In this way, this invention can release the traveling wheel from skidding without the use of a flow dividing valve.

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