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:
Mar. 13, 2012
Filed:
May. 06, 2009
Edward C. Allen, Davis, IL (US);
Andrew P. Grosskopf, Rockford, IL (US);
Brady A. Manogue, Beloit, WI (US);
Eric A. Brust, Machesney Park, IL (US);
Edward C. Allen, Davis, IL (US);
Andrew P. Grosskopf, Rockford, IL (US);
Brady A. Manogue, Beloit, WI (US);
Eric A. Brust, Machesney Park, IL (US);
Hamilton Sundstrand Corporation, Windsor Locks, CT (US);
Abstract
A pump gear includes a pump gear body having involute teeth that each have an involute surface that extends between a tooth tip and a tooth base. The involute surface includes at least reference points A-D, with reference point A near the base, reference point D near the tip, reference point B between reference points A and D, and reference point C between reference points B and D. The reference points A-D have associated respective roll angles, ε, between a corresponding first line that is perpendicular to the involute surface at the given reference point A-D, and a second line that is tangent at a reference point that lies on a terminal end of the involute surface at the tooth base to a reference base circle having a center origin at the center axis.