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:
Nov. 24, 2020
Filed:
Dec. 13, 2018
Brunswick Corporation, Mettawa, IL (US);
Joseph Gajewski, Schaumburg, IL (US);
William J. Kreuger, Bloomingdale, IL (US);
Thomas M. Niec, Elmwood Park, IL (US);
Zhenyu Tian, Berkeley, CA (US);
Life Fitness, LLC, Rosemont, IL (US);
Abstract
An exercise machine has a first frame member, a second frame member that is movable with respect to the first frame member, and a locking device having at least one cam that is rotatable into and between a locked position in which the cam abuttingly engages and thereby retains the second frame member in position with respect to the first frame member and an unlocked position in which the cam is spaced from and thereby frees the second frame member for movement with respect to the first frame member. The cam has an engagement surface with a contour that follows a logarithmic spiral curve defined by the following parametric equations: x(t)=r(t)cos(t)=aecos(t), and y(t)=r(t)sin(t)=aesin(t), wherein e is the base of natural logarithms and a and b are arbitrary positive real constants.