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:
Dec. 16, 2025
Filed:
Mar. 24, 2021
Ridge Tool Company, Elyria, OH (US);
Michael J. Rutkowski, North Royalton, OH (US);
Mitchell Barton, Richfield, OH (US);
Alex Michael Cole, Columbia Station, OH (US);
Donald M. Embree, Akron, OH (US);
Nicholas Christopher Mavros, Columbia Station, OH (US);
Jeffrey Szucs, Columbia Station, OH (US);
Ridge Tool Company, Elyria, OH (US);
Abstract
A torque limiter and a retrievable chain knocker tool, each separately configured for use with a drain cleaning apparatus are described. The drain cleaning apparatus includes a drum housing defining an interior region, a cable carrier rotatably mounted within the housing interior region, and a transmission assembly operatively configured for transferring rotary power to an end portion of flexible cable retained in the housing.