Patent · US Expired

Hydraulic servo-mechanism for an automatic transmission

US5881858A · kind A · utility

3Cited by
12References
9Claims
0Family size

Assignee

Inventors

Key dates

Filing dateDec 27, 1996
Grant dateMar 16, 1999
Priority date
Expiry dateDec 27, 2016

Classification

  • Technology area (CPC F)Mechanical Engineering; Lighting; Heating
  • CPC primaryF16H63/3003
  • WIPO fieldMechanical elements
  • WIPO sectorMechanical engineering

Abstract

A hydraulic servo-mechanism for an automatic transmission, including a hydraulic servo for applying a band brake to engage a band to a drum. The hydraulic servo includes a rod which is selectively positionable to an apply position for applying the band brake, a standby position in which the rod is retracted by a predetermined extent in a release direction from the apply position, and a retracted position in which the rod is further retracted in the release direction from the standby position to release the band brake.

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