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:
Jan. 15, 2019
Filed:
Jan. 23, 2017
Schiller Grounds Care, Inc., Southampton, PA (US);
Jonathan Lapp, Johnson Creek, WI (US);
Schiller Grounds Care, Inc., Southampton, PA (US);
Abstract
A tension control mechanism includes a drive wheel and a jack wheel rotatably mounted with respect to a chassis of a self-propelled power tool. An idler arm is pivotally mounted to the chassis and carries an idler wheel. A flexible drive member entrains the drive wheel and the jack wheel and drives the idler wheel. First and second bias members bias the idler arm in opposing rotational directions, which move the idler wheel toward or away from the flexible drive member to respectively increase or decrease tension. A ratchet arm is attached to the idler arm has a hook. A ratchet head is fixed to the chassis and has ratchet teeth for engaging the hook to permit relative motion between the hook and the ratchet teeth to increase tension, and to limit relative motion between the hook and the ratchet teeth to prevent an excessive decrease in tension.