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:
Feb. 11, 2020
Filed:
Nov. 06, 2017
Borgwarner Inc., Auburn Hills, MI (US);
Larry A. Pritchard, Macomb, MI (US);
Thomas R. Benner, Lansing, NY (US);
Christopher J. Pluta, Lansing, NY (US);
BorgWarner Inc., Auburn Hills, MI (US);
Abstract
An engine variable camshaft timing phaser () includes a sprocket () and a planetary gear assembly (). The sprocket () receives rotational drive input from an engine crankshaft. The planetary gear assembly () includes two or more ring gears (), multiple planet gears (), a sun gear (), and a wrap spring (). One of the ring gears () receives rotational drive input from the sprocket () and one of the ring gears () transmits rotational drive output to an engine camshaft. The sun gear () engages with the planet gears (). The wrap spring () experiences expansion and contraction exertions to permit advancing and retarding engine valve opening and closing, and to prevent advancing and retarding engine valve opening and closing.