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:
Jul. 24, 2012
Filed:
Apr. 13, 2009
Duqiang Wu, Eden Prairie, MN (US);
G. Clark Fortune, Farmington Hills, MI (US);
Aaron H. Jagoda, St. Louis Park, MN (US);
John Ryan Kess, Bloomington, MN (US);
Thomas J. Stoltz, Allen Park, MI (US);
Paul Brenner, Chaska, MN (US);
Benjamin Morris, Ann Arbor, MI (US);
Duqiang Wu, Eden Prairie, MN (US);
G. Clark Fortune, Farmington Hills, MI (US);
Aaron H. Jagoda, St. Louis Park, MN (US);
John Ryan Kess, Bloomington, MN (US);
Thomas J. Stoltz, Allen Park, MI (US);
Paul Brenner, Chaska, MN (US);
Benjamin Morris, Ann Arbor, MI (US);
Eaton Corporation, Cleveland, OH (US);
Abstract
An exemplary hydraulic system includes a first digital valve fluidly connectable to a first hydraulic load and a pump. The first valve is operable to fluidly connect the first hydraulic load to the pump. A second digital valve is fluidly connectable to a second hydraulic load and the pump. The second valve is operable to fluidly connect the second hydraulic load to the pump. The system includes a first sensor for detecting a pump discharge pressure and a second sensor for detecting an inlet pressure of the first hydraulic load. A controller is configured to determine a time delay based on the pump discharge pressure and the first hydraulic load inlet pressure and to send a control signal instructing the second valve to commence opening at a time substantially equal to the time delay after commencing closing the first valve.