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:
Jun. 26, 2007
Filed:
Jul. 21, 2005
Applicants:
Xingen Dong, Farmington, CT (US);
Frank P. Holzschuh, Greeneville, TN (US);
Allen Burdette, Johnson City, TN (US);
Inventors:
Xingen Dong, Farmington, CT (US);
Frank P. Holzschuh, Greeneville, TN (US);
Allen Burdette, Johnson City, TN (US);
Assignee:
Parker-Hannifin Corporation, Cleveland, OH (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F01B 3/02 (2006.01);
U.S. Cl.
CPC ...
Abstract
A speed adjusting mechanism that includes a return to neutral feature for returning a control member of a pump to neutral after the control member has been moved to a forward or reverse position. The speed adjusting mechanism is characterized by the use of a torsion spring that enables the mechanism to be composed of just a few parts.