Valve assembly for controlling actuation of an actuator of a track tensioning system
US6305762A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 16, 1999 |
| Grant date | Oct 23, 2001 |
| Priority date | — |
| Expiry date | Dec 16, 2019 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB62D55/104
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A valve assembly for controlling actuation of an actuator of a track tensioning system for adjusting tension on a drive track chain includes a valve housing defining (i) a master chamber, (ii) a slave chamber, (iii) a fluid passage which fluidly couples the master chamber to the slave chamber, and (iv) a fluid outlet which fluidly couples the slave chamber to the actuator. The valve assembly also includes a master valve member positioned within the master chamber. The master valve member (i) isolates the master chamber from the slave chamber when the master valve member is positioned in a first master position, and (ii) places the master chamber in fluid communication with the slave chamber when the master valve member is positioned in a second master position. The valve assembly further includes a slave piston positioned within the slave chamber, the slave piston (i) isolates the fluid outlet from the slave chamber when the slave piston is positioned in a first slave position, and (ii) places the fluid outlet in fluid communication with the slave chamber when the slave piston is positioned in a second slave position. Movement of the master valve member from the first master positi…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.