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. 02, 2014
Filed:
Aug. 23, 2012
Loren Veltrop, Chicago, IL (US);
Karl Heinze, West Chicago, IL (US);
Edward Eaton, Eola, IL (US);
Brian W. Mathews, Waterman, IL (US);
Eugene L. Di Monte, Aurora, IL (US);
Loren Veltrop, Chicago, IL (US);
Karl Heinze, West Chicago, IL (US);
Edward Eaton, Eola, IL (US);
Brian W. Mathews, Waterman, IL (US);
Eugene L. Di Monte, Aurora, IL (US);
Prince Castle LLC, Carol Stream, IL (US);
Abstract
A dispenser for viscous, extrudable materials uses a sprocket-driven push chain that is drawn from a chain magazine responsive to actuation of a user trigger. The sprocket for the chain is driven by a toothed wheel, which is driven by a first, ratcheting drive pawl, which is actuated by the trigger. A second ratcheting locking pawl prevents the toothed wheel and hence the chain sprocket from rotating backward when the trigger is released. A single 'button' or actuator can be actuated by one hand of a user while the user's other hand grasps a chain retractor to pull an extended chain back to a starting position whereat the dispenser can be reloaded.