The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 17, 2012
Filed:
Jul. 29, 2008
Chad Timothy Brickner, Aurora, IL (US);
Chad Timothy Brickner, Aurora, IL (US);
Caterpillar Inc., Peoria, IL (US);
Abstract
A hydraulic system for a machine is disclosed. The hydraulic system may have an actuator with a first chamber and a second chamber. The hydraulic system may also have a first valve, a second valve, a third valve, and an operator input device displaceable from a neutral position to generate a signal indicative of a desired movement of the actuator. The hydraulic system may further have a controller configured to open the first and third valves by amounts related to the signal to pass fluid, and open the second valve by an amount related to the signal to pass fluid when the signal indicates a desire for increased actuator velocity. The third valve may continue to open during opening of the second valve.