Donald J Gettemy

US Patent:

55447236, Aug 13, 1996

Filed:

May 17, 1995

Appl. No.:

8/443326

Inventors:

Donald J. Gettemy - Los Alamos NM

International Classification:

B65H 5924

US Classification:

188 654

Abstract:

Self-belaying apparatus. An apparatus for permitting sport climbing without the assistance of a belayer is described. While the user is climbing, the apparatus slides along the climbing rope with little resistance. Any downward motion is immediately stopped, however. When the climber wishes to continue ascending, the apparatus automatically releases its grip on the rope. The apparatus, which includes a base, an elongated bar, a flat plate and a pulley, can also be used for rapelling.

US Patent:

51645670, Nov 17, 1992

Filed:

Apr 8, 1991

Appl. No.:

7/681293

Inventors:

Donald J. Gettemy - Los Alamos NM

Assignee:

The United States of America as represented by the United States
Department of Energy - Washington DC

International Classification:

B23K 2600

US Classification:

21912172

Abstract:

A method for cutting with a laser beam where an oxygen-hydrocarbon reaction is used to provide auxiliary energy to a metal workpiece to supplement the energy supplied by the laser. Oxygen is supplied to the laser focus point on the workpiece by a nozzle through which the laser beam also passes. A liquid hydrocarbon is supplied by coating the workpiece along the cutting path with the hydrocarbon prior to laser irradiation or by spraying a stream of hydrocarbon through a nozzle aimed at a point on the cutting path which is just ahead of the focus point during irradiation.