Glue gun with pinch rollers
US6558059B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 20, 2002 |
| Grant date | May 6, 2003 |
| Priority date | — |
| Expiry date | Feb 26, 2022 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB05C17/00536
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A glue gun has a base adapted to receive electrical power in either cordless or corded operation, a barrel, a feed roller, a selectively removable glue stick holder in axial alignment with and disposed between a nozzle assembly and the feed roller and extending through an electric heater for containing a glue stick to be melted by the heater, a pinch roller adapted to press the glue stick against the feed roller so that rotation of the feed roller causes the glue stick to be urged toward the nozzle assembly in order to extrude melted glue therethrough, the nozzle assembly having a longitudinal passageway which is normally closed by a pair of valves serially disposed at opposite ends of the passageway and which are operable to open in response to pressure from melted glue produced by rotation of the feed roller and to close to trap melted glue in the passageway when feed roller rotation is terminated, and a trigger assembly to manually control the application of electric power to a drive motor to rotate the feed roller.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.