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:
Apr. 25, 2017
Filed:
May. 27, 2011
Richard N. Fargo, Plainville, CT (US);
Brad Guilani, Woodstock Valley, CT (US);
James L. Hubbard, Kensington, CT (US);
Adrian D. West, New Britain, CT (US);
Richard N. Fargo, Plainville, CT (US);
Brad Guilani, Woodstock Valley, CT (US);
James L. Hubbard, Kensington, CT (US);
Adrian D. West, New Britain, CT (US);
OTIS ELEVATOR COMPANY, Farmington, CT (US);
Abstract
A roller apparatus is provided. The roller apparatus may include a bearing wheel configured to rotatably couple the roller apparatus to a roller shaft, and a resilient member radially disposed about the bearing wheel and configured to contact a guiderail at different magnitudes of loads. The resilient member may include a first section of a first diameter and a second section of a second diameter. The first section may be caused to deflect in response to loads within a first load range, while the second section may be caused to deflect in response to loads within a second load range. The resilient member may exhibit a stepwise increase in stiffness with a gradual increase in load.