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. 28, 2017
Filed:
Apr. 09, 2015
Applicant:
Praxis Works Llc, Santa Cruz, CA (US);
Inventors:
David M. Earle, Watsonville, CA (US);
Jordan Andrew Kestler, Pacifica, CA (US);
Assignee:
Praxis Works LLC, Santa Cruz, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B62M 9/10 (2006.01); F16H 55/30 (2006.01);
U.S. Cl.
CPC ...
B62M 9/105 (2013.01); F16H 55/30 (2013.01);
Abstract
An apparatus for driving a drive chain, such as on a bicycle, may include a chainring having teeth arranged around a circumference of the chainring, and one or more magnetic portions disposed adjacent to the teeth of the chainring. The one or more magnetic portions may be disposed on the chainring and/or on a frame to which the chainring is rotatably coupled.