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:
Dec. 26, 2000
Filed:
Mar. 21, 1999
Applicant:
Inventors:
Berthold Martin, Shelby Township, MI (US);
Valentin Botosan, Rochester, MI (US);
Assignee:
DamilerChrysler Corporation, Auburn Hills, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F04C / ; F04C / ;
U.S. Cl.
CPC ...
418171 ; 4182065 ;
Abstract
A pump gear for an automatic transmission oil pump having a plurality of teeth. The thickness of each tooth varies randomly from a baseline thickness T.sub.B. Correspondingly, the clearance between each tooth varies randomly between each pair of adjacent teeth. The random variation in tooth thickness prevents the formation of resonant frequencies when the gear pump operates, thereby reducing noise produced by the automatic transmission oil pump.
Martin, Berthold. (2000). Random error generation of tooth index to eliminate pump noise (U.S. Patent No. 6164944). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/6164944
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile