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:
May. 14, 2013
Filed:
Sep. 26, 2008
Jeffrey E. Sandahl, Buffalo, MN (US);
Timothy J. Wessels, Victoria, MN (US);
Jeffrey E. Sandahl, Buffalo, MN (US);
Timothy J. Wessels, Victoria, MN (US);
Wagner Spray Tech Corporation, Plymouth, MN (US);
Abstract
A hand-held, battery powered liquid applicator having an on-board reservoir. An electric motor drives a piston in the reservoir via a pinion gear member and rack gear. A gear shifter may disengage the pinion gear member from the rack gear. A battery compartment may have a door has recess to enable a user to grasp a dry cell located farthest from the door. The rack gear may have modified profile teeth at the end of travel to allow the pinion gear member to slip when the piston is urged past the end of travel. The piston may have a length substantially equal to a characteristic length of the reservoir. Liquid may be drawn into the reservoir by powered or manual retraction of the piston and liquid may be delivered from the reservoir to an applicator head by powered or manual motion of the piston into the reservoir.