Fred Richard Schwartzberg
Engineers at Trenton Way, Denver, CO
License number
Colorado 26413
Issued Date
Jul 7, 1989
Renew Date
Nov 1, 2015
Expiration Date
Oct 31, 2017
Type
Professional Engineer
Address
Address
2452 S Trenton Way SUITE C, Denver, CO 80231
Professional information
Independent Consumer Electronics Professional
Location:
Greater Denver Area
Industry:
Consumer Electronics
Owner, Rocky Mountain Emtec
Position:
Owner at Rocky Mountain EMTEC
Location:
Greater Denver Area
Industry:
Mining & Metals
Work:
Rocky Mountain EMTEC
-
Owner
Box Truss Hoop
US Patent:
4475323, Oct 9, 1984
Filed:
Apr 30, 1982
Appl. No.:
6/373571
Inventors:
Fred R. Schwartzberg - Denver CO
William H. Tobey - Littleton CO
William H. Tobey - Littleton CO
Assignee:
Martin Marietta Corporation - Bethesda MD
International Classification:
E04H 1234
US Classification:
52111
Abstract:
A box truss hoop which is defined by circumferentially adjacent collapsible boxes. The hoop is expandable radially from a compact, folded configuration to a deployed hoop configuration. Each of the boxes includes collapsible inner and outer frames, connecting side members extending between the inner and outer frames and diagonal braces. When employed as an antenna, the box truss hoop includes a shaped reflective surface extending across the hoop and a feed located at the focus of the reflective surface.