Patent · US Expired

Fluid control valve actuating system

US6827050B2 · kind B2 · utility

6Cited by

6References

5Claims

0Family size

Assignee

Caterpillar Inc. · US

Inventors

Clifford E. Cotton, III · Pontiac, US
Bernhard Kirsch · Mandelbachtal, DE
David E. Martin · Normal, US
Olaf Ohligschlaeger · Herdorf, DE
Rene Schulz · Rabenau, DE
Ronald D. Shinogle · Peoria, US
Alan R. Stockner · Metamora, US
Ye Tian · Bloomington, US
Stephen M. Wiley · Normal, US

Key dates

Filing date	Sep 16, 2002
Grant date	Dec 7, 2004
Priority date	—
Expiry date	Sep 16, 2022

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF01L2001/34436
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A control system adapted to control an actuator between extended and retracted positions has a fluid control valve connected to the actuator a source of high pressure fluid and a reservoir. The fluid control valve is movable between a first position at which the actuator is connected back to the fluid reservoir adapted and a second position operable to connect the actuator to a high pressure actuation fluid source. An electronic control module is connected in control communication with the fluid control valve and adapted to automatically generate a control signal to position the control valve at the second position in response to an elapsed time being passed at which the fluid control valve is at the first position is greater than a predetermined time.

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