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:
Oct. 20, 2015
Filed:
Oct. 31, 2014
Inertia Engineering + Design Inc., Toronto, CA;
Raymond J. Minato, Toronto, CA;
Eleu Thereus Tai-Sung Um, Toronto, CA;
Christopher R. Leiphart, Toronto, CA;
Inertia Engineering + Design Inc., Toronto, Ontario, CA;
Abstract
A lightweight caster is described that is resistant to ingress of debris into a caster bearing. The caster has a monolithic fork having an annular wheel-supporting portion and a chair-supporting portion. The wheel-supporting portion has a pass-through aperture for receiving a retainer. A rotational bearing is supported on the wheel-supporting portion, which supports a wheel rim such that the wheel rotates in the vertical plane. The rim has a pass-through aperture aligned with the pass-through aperture of the fork, and a ring at an inside edge of the bearing to retain the bearing between the rim and the fork and to inhibit debris from contacting the bearing. A retainer retains the rim on the fork and has an aperture aligned with the fork pass-through aperture. The retainer also has a bearing-retaining portion at an outside edge of the bearing to retain the bearing and to inhibit debris from migrating inwardly.