Luis Leon

US Patent:

20130251510, Sep 26, 2013

Filed:

Mar 1, 2012

Appl. No.:

13/410049

Inventors:

Max R. Runyan - Huntington Beach CA, US
Daniel G. Sanders - Lake Tapps WA, US
Larry D. Hefti - Auburn WA, US
David R. Papenfuss - Tukwila WA, US
Jack W. Mauldin - Mill Creek WA, US
Luis R. Leon - Federal Way WA, US

Assignee:

THE BOEING COMPANY - Chicago IL

International Classification:

F01D 25/00

US Classification:

415119

Abstract:

A propulsion system comprises a turbine engine, and an engine nacelle including an SPF/DB inner wall having a hot side face sheet against the engine and a cold side face sheet that has noise attenuation openings.

US Patent:

41022688, Jul 25, 1978

Filed:

Jun 30, 1975

Appl. No.:

5/591538

Inventors:

Fernando V. Guarderas - Woodland Hills CA
Luis Leon - Redondo Beach CA

Assignee:

Dataproducts Corporation - Woodland Hills CA

International Classification:

B41J 770

US Classification:

101399

Abstract:

A type surface useful in an impact printer having type characters thereon particularly configured to print large solid blocks. Each type character is comprised of a plurality of spaced land area portions distributed in an area of the type surface whose periphery conforms to the shape and size of the solid block to be printed. The plurality of land area portions present a lower effective contact area to an impacting hammer than would a solid land area of the same periphery, therefore yielding higher density print. The spaces between the land area portions fill in on the printed character as a consequence of smear attributable to the relative movement between the type surface and ink ribbon.