James G Hartmann

US Patent:

D345870, Nov 14, 1989

Filed:

Sep 21, 1988

Appl. No.:

7/247458

Inventors:

David C. Danielson - New Canaan CT
James J. Hartmann - Indianapolis IN
John N. McGarvey - Drexel Hill PA
Alvin R. Tilley - Red Bank NJ
John M. Wuerz - Indianapolis IN

Assignee:

American Telephone and Telegraph Company - New York NY
AT&T Information Systems Inc. - Morristown NJ

US Classification:

D14244

US Patent:

52326500, Aug 3, 1993

Filed:

Dec 31, 1991

Appl. No.:

7/815482

Inventors:

Mark R. Behan - Blue Point NY
James G. Hartmann - Lake Ronkonkoma NY

Assignee:

Grumman Aerospace Corporation - Bethpage NY

International Classification:

B29C 3340

US Classification:

264219

Abstract:

A process for the fabrication of detail parts for superconducting magnets, such as end saddles, wedge tips, spacers and keys, by a resin transfer molding process, the attributes of which are also utilized in the subsequent fabrication of the superconducting magnet. Pursuant to the process, initially engineering specifications for the detail part are utilized to produce a master mold part for the detail part, while taking into account a calculated resin shrinkage factor. The master mold part is then utilized to fabricate a resin transfer mold for the detail part. A preform for the detail part is then placed into the resin transfer mold, and the mold is closed with the preform therein. A two-stage curing resin is then injected into the mold, and the mold is heated to partially cure the molded detail part. The partially cured detail part is then removed from the resin transfer mold.

US Patent:

D3236579, Feb 4, 1992

Filed:

Apr 8, 1991

Appl. No.:

7/682119

Inventors:

David C. Danielson - New Canaan CT
Michael G. Grisham - New York NY
James J. Hartmann - Indianapolis IN
David C. Stowers - Nutley NJ

Assignee:

AT&T Bell Laboratories - Murray Hill NJ

US Classification:

D14151