Weed terminating device using superheated water and spring loaded discharge valve
US9756843B2 · kind B2 · utility
Inventor
Key dates
| Filing date | Oct 28, 2015 |
| Grant date | Sep 12, 2017 |
| Priority date | — |
| Expiry date | Apr 20, 2036 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF22B1/284
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A weed or insect terminating device features a container having a valve port, a heating element, a valve core, and a biasing mechanism forcing the valve core into an extended position. An axial passage in the valve core extends through only a distal end of the valve core. A lateral passage intersects the axial passage and opens radially from the valve core. A proximal seal is provided between the valve core and valve port at a location between a proximal end of the valve core and the opening of the lateral passage. The proximal seal withdraws from sealed contact with the port in a retracted state of the valve core, while a distal seal remains intact. Heated water from the container can be dispensed through the valve port only via the lateral and axial passages of the valve core, and only when made accessible by retraction of the valve core.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.