Steam stop for steam cleaner
US7269878B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 11, 2003 |
| Grant date | Sep 18, 2007 |
| Priority date | — |
| Expiry date | Jul 21, 2025 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB08B2230/01
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A steam stop safety mechanism for a portable steam cleaner prevents discharge of steam at the cleaner nozzle when attaching and disconnecting attachments, even if the cleaner trigger is in a locked open position. The mechanism includes a steel pin that is displaced in an extended position against a shoulder in the nozzle to prevent pressurized steam from escaping the nozzle. Attachment couplings include a pin retractor plate with a central hub that pushes the pin away from the shoulder to allow the steam to flow through openings in the retractor plate and out a concentrator or attachment hose that has a trigger to release steam as desired.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.