Self-igniting torch
US4526532A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 15, 1983 |
| Grant date | Jul 2, 1985 |
| Priority date | — |
| Expiry date | Aug 15, 2003 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF23D14/38
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A gas appliance, preferably a torch, is provided with an orifice tube stationary with respect to its housing and receptive of combustible gas and an orifice gas-tightly mounted in the orifice tube for movement along the longitudinal axis of the orifice tube. A burner tube in communication with the orifice tube via the orifice is mounted for slidable movement along the longitudinal axis of the orifice tube in conjunction with the orifice to maintain the relative position of the orifice and burner tube during movement along the orifice tube. A valve in the orifice tube is actuatable in response to the movement of the orifice means in one direction to permit gas to pass into the orifice means and in response to the movement of the orifice means in the opposite direction into a rest position to prevent the flow of gas into the orifice means. An igniter is also responsive to the movement of the orifice to effect a spark in the burner tube to ignite gas permitted to pass by the valve.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.