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US8439586B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 26, 2008 |
| Grant date | May 14, 2013 |
| Priority date | — |
| Expiry date | Sep 24, 2029 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB05C17/0308
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.