Donald C Evans

US Patent:

41402910, Feb 20, 1979

Filed:

Oct 13, 1977

Appl. No.:

5/841776

Inventors:

Donald E. Evans - Marina del Rey CA
Lewell M. Lively - Anaheim CA

Assignee:

The United States of America as represented by the Secretary of the Air
Force - Washington DC

International Classification:

B64C 114

US Classification:

244118R

Abstract:

A structural system for capturing, supporting, and releasably securing a tail ramp toe of an aircraft, while the aircraft is either on the ground or in flight. The preferred embodiment of the ramp toe stowage system is adapted for use with a cargo aircraft having: a downwardly and outwardly opening tail ramp, with at least one ramp toe removably attached to it; and, an upwardly and inwardly opening tail door that is complementary to, and aft of, the tail ramp, with the tail door having an internal surface. The stowage system is located over, and is attached to, the internal surface of the tail door, and includes two horizontally positioned tracks that accept complementary guide rollers which are on the side edges of the ramp toe, near the known center of gravity of the toe. Unlike the prior art, the system requires only one man to stow the ramp toe, or to release it from stowage, even while the aircraft is in flight.

US Patent:

45987106, Jul 8, 1986

Filed:

Jan 20, 1984

Appl. No.:

6/572236

Inventors:

Larry K. Kleinberg - Burbank CA
Donald S. Evans - Pasadena CA

Assignee:

Urban Engineering Company, Inc. - Burbank CA

International Classification:

A61B 1732

US Classification:

128318

Abstract:

A surgical instrument comprising a pair of co-axially assembled tubes having their distal walls in bearing relationship and with registrable openings extending through such distal end and annular walls correspondingly joined to their respective distal walls. The inner tube reversibly rotates within its matched outer tube in operation of the invention, as action by cutting edges formed about such openings severs tissue drawn into the inner tube by suction. Each distal end wall includes a pair of circular cutting edges, those in the inner tube having a straight cut across its thickness while those in the outer tube have a full radiused cut across its thickness. Full radiused cuts across the thicknesses of the annular walls of the inner and outer tubes are provided for arcuately-formed and parallel cutting edges forming the respective openings in these tubes in their annular walls. A method to form these openings by means of these cutting edges is disclosed.

US Patent:

44091745, Oct 11, 1983

Filed:

Dec 24, 1981

Appl. No.:

6/334099

Inventors:

Albert Toy - Gardena CA
Louis L. Constantino - Placentia CA
Donald B. Evans - Redondo Beach CA

Assignee:

The United States of America as represented by the Secretary of the Army - Washington DC

International Classification:

B28B 300

US Classification:

264313

Abstract:

A method for low cost mass production of isostatically pressed powder calm discs by placing a multiplicity of molds with powdered calcium thereon in a mother bag that is later sealed and pressed isostatically to press the calcium powder relative to its respective mold.

US Patent:

43795358, Apr 12, 1983

Filed:

Jul 6, 1981

Appl. No.:

6/280460

Inventors:

Floyd G. Baldwin - Garden Grove CA
Donald E. Evans - Marina Del Rey CA

Assignee:

McDonnell Douglas Corporation - Long Beach CA

International Classification:

B64D 110
B64D 112

US Classification:

244137R

Abstract:

A pallet restraint system for use in the cargo bay of an aircraft in an air drop sequence. The system assures an equal application of the parachute extraction force and simultaneous release of all load sensitive latches by means of hydraulic interconnectors between the latches to vary their position.

US Patent:

53539818, Oct 11, 1994

Filed:

Dec 1, 1992

Appl. No.:

7/983917

Inventors:

Donald B. Evans - Redondo Beach CA
Rex C. Claridge - Redondo Beach CA

Assignee:

TRW Inc. - Redondo Beach CA

International Classification:

B23K 3528

US Classification:

228190

Abstract:

A low pressure process of producing graphite fiber metal matrix composite (Gr/MMC) structures comprising brazing graphite-magnesium metal matrix composite precursors or tapes using a soldering alloy consisting essentially of magnesium and one or more of aluminum, zinc, lithium and silver.