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, 2015
Filed:
Mar. 08, 2013
Applicant:
Paul T. Mccrary, Belleville, MI (US);
Inventor:
Paul T. McCrary, Belleville, MI (US);
Assignee:
Dayco IP Holdings, LLC, Springfield, MO (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16D 19/00 (2006.01); F16H 25/22 (2006.01); F16D 13/76 (2006.01); F16D 23/12 (2006.01); F16D 43/02 (2006.01); F16D 43/21 (2006.01);
U.S. Cl.
CPC ...
F16D 19/00 (2013.01); F16H 25/2214 (2013.01); Y10T 74/19767 (2015.01); F16D 13/76 (2013.01); F16D 23/12 (2013.01); F16D 43/02 (2013.01); F16D 43/216 (2013.01); F16D 2023/123 (2013.01);
Abstract
Ball screws are described that may be incorporated into other devices such as a pulley assembly or a differential device. The ball screws include a threaded shaft defining a central longitudinal axis with a threaded nut threadedly coupled thereto to define at least one track in between them. Each track forms a continuous loop around an infield protrusion and is filled with a plurality of rolling elements filling. Each rolling element has the same radius from the central longitudinal axis such that the nut can rotate at higher speeds without the rolling elements locking up as a result of centripetal force.