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. 22, 2022
Filed:
Jul. 11, 2018
3m Innovative Properties Company, St. Paul, MN (US);
Michael A. Boraas, Zumbrota, MN (US);
Keith G. Mattson, Woodbury, MN (US);
3M Innovative Properties Company, St. Paul, MN (US);
Abstract
A non-motorized fall-protection apparatus, comprises a drum, and a rotationally-activated braking device that comprises at least one pawl and at least one ratchet with at least one tooth that is engagable by an engaging end of the at least one pawl, wherein the rotationally-activated braking device comprises a limited-use, constant-contact friction brake comprising at least one layer of friction material with a friction-braking surface and at least one rotatable member with a contact surface that is in contact with the friction-braking surface of the layer of friction material.