Normally-closed nozzle tip trimmer
US5860568A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 31, 1996 |
| Grant date | Jan 19, 1999 |
| Priority date | — |
| Expiry date | Oct 31, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T83/8772
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A dispensing apparatus, such as a caulking gun, includes an elongated handle having a U-shape cross section to define an internal space. A support member is mounted on the handle configured for receiving a dispensing cartridge having a nozzle at one end and being sealed at the other end by a slidable diaphragm or seal. A plunger rod and piston assembly is mounted on the handle for operatively engaging the cartridge diaphragm to dispense compounds or viscous mediums from the open nozzle of the cartridge. A trigger is pivotally attached to the handle for incrementally advancing the plunger assembly as the trigger is pulled from an extended position most remote from the handle to a retract position most proximate to the handle. A spring normally urges the trigger to move to the extended position. An aperture is provided in the handle for receiving at least a portion of a nozzle of a dispensing cartridge. A protective cover plate is responsive to the movements of the trigger for normally and automatically blocking the aperture in the handle and to filly open the aperture only when the trigger is moved to a selected intermediate retracted position. A cutter is provided within the space …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.