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:
May. 05, 2020
Filed:
Aug. 17, 2018
Applicant:
Robert Bosch Gmbh, Stuttgart, DE;
Inventors:
Roger A. Webel, Copley, OH (US);
Evan D. Bialosky, Greenville, SC (US);
Scott C. Graham, Jeromesville, OH (US);
Frank C. Karsten, Wooster, OH (US);
Daniel S. Lacey, Wooster, OH (US);
Richard F. Sailer, Jr., Massillon, OH (US);
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F15B 13/04 (2006.01); F15B 13/02 (2006.01); F15B 1/26 (2006.01);
U.S. Cl.
CPC ...
F15B 13/0417 (2013.01); F15B 1/26 (2013.01); F15B 13/026 (2013.01); F15B 13/0401 (2013.01); F15B 2013/0413 (2013.01);
Abstract
A new means of achieving a valve float position in a closed centered hydraulic control valve. The valve has a main spool position whereby pressure compensator load sense control pressure is drained to tank through the main spool. Secondly, a pin acts on the pressure compensator to prevent the main pump flow from reaching the main section spool. Finally, the new spool position adds a connection from the consumer to tank, enabling a float position.