Hydroblasting spray gun having an on/off safety switch system
US5582349A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 2, 1995 |
| Grant date | Dec 10, 1996 |
| Priority date | — |
| Expiry date | Oct 2, 2015 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16P3/22
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
An improved hydroblasting gun having an on/off safety switch system. The on/off switch system comprises at least two actuatable triggers each displacing a specified volume of incompressible fluid which, when coupled with a predetermined volume within an actuator, displaces a piston initiating a signal. In specific application, two separate triggers are depressed displacing a predetermined volume in an actuator adjacent a shut-off valve. Until the actuator fully opens the shut-off valve, hydroblasting operations may not begin. In this manner, the chances of accidental discharge through the depression of a single trigger are eliminated and preferred ergonomical characteristics are provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.