The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 28, 1985
Filed:
Nov. 08, 1982
Anthony J Rotolico, Hauppauge, NY (US);
Eutectic Corporation, Flushing, NY (US);
Abstract
A flame spray system comprising a torch is provided having a gas mixing chamber and means for feeding acetylene and oxygen to the mixing chamber in a preselected proportion. The system includes acetylene valve means with an orifice restrictor for feeding the gas to a mixing chamber, the orifice size being selected to provide, in the choked state, a flow of acetylene therethrough under a selected choke pressure. Oxygen valve means is also provided with an orifice restrictor of size selected to provide in the choked state a flow of oxygen therethrough under a selected choke pressure, the ratio of oxygen flow rate to the acetylene flow rate under the selected pressures to the orifices being such that an increase in pressure for the selected orifice sizes does not substantially change the flow characteristics out of the orifices in the choked state as compared to a decrease in gas pressure to below choke conditions which results in an adverse change in flame characteristics, the flow of the gases through the orifices in the choked state into the mixing chamber resulting in optimum flame chemistry as measured in terms of optimum BTU's per hour.