| 摘要 |
<p>1,110,320. Burners. L. W. PENMAN ENGINEERING Ltd. 24 May, 1966 [25 May, 1965], No. 22061/65. Heading F4T. A gas burner having a body chamber 10 with inlet 11 and nozzle feed opening 12 has a piston 13 slidable against a spring 15, when the chamber is closed from the gas supply, to increase pressure in the chamber and expel dirt from the nozzle' jet. In a modification the chamber has a flexible diaphragm instead of the piston.</p> |
