Raymond J Walsh

US Patent:

45410968, Sep 10, 1985

Filed:

Feb 21, 1984

Appl. No.:

6/581929

Inventors:

Raymond F. Walsh - Canoga Park CA

Assignee:

Rockwell International Corporation - El Segundo CA

International Classification:

H01S 322

US Classification:

372 59

Abstract:

A waste management system for a DF or HF chemical laser or certain other types of chemical lasers wherein the exhaust gases of the laser are fed into a reaction chamber 12 having a collection sump region 14 at the bottom. A Supply tank 16 is loaded with lithium and is coupled to the chamber 12 by a valved feed line 18. Heating means 44 maintains the lithium in a liquid state. Pressurization means 40 pumps the lithium through the feed line 18 into an injector 32 which delivers the lithium to the chamber 12 where the lithium reacts with the exhaust gases. The reaction forms solid and/or liquid waste products which are collected in the sump region 14. After the laser is shut off, the pressure means 40 coupled to the supply tank 16 is replaced by a vacuum pump 44 which acts through a return line 20 coupling the tank 16 to the sump region 14. The waste products are drawn out of the chamber 12 into the tank 16, the tank lines 18 and 20 are disjoined, and the tank 16 is emptied. The tank lines can then be reconnected and the operation repeated once the tank has been recharged with fresh lithium.

US Patent:

43782736, Mar 29, 1983

Filed:

Feb 8, 1982

Appl. No.:

6/346663

Inventors:

Raymond F. Walsh - Canoga Park CA
Allan W. Lakin - Northridge CA

Assignee:

Rockwell International Corporation - El Segundo CA

International Classification:

C25D 300
C25D 366

US Classification:

204 14N

Abstract:

A process for the preparation of chemical pump absorbents comprises electrodeposition of an alkali or alkaline earth metal from a non-aqueous electrolyte. Calcium is preferred. The electrolyte comprises a polar, non-protonic solvent or is a fused salt electrolyte. The cathode substrate and electrodeposition parameters provide sufficient contact area and porosity to remove reactive species from laser effluent gas. Formation of a mercury amalgam followed by distillation of the mercury provides another suitable absorbent.