Andrew K. Chang
Architects in Rockville, MD
License number
Maryland S5-0005225
Issued Date
Jun 11, 1987
Expiration Date
Jul 31, 1997
Category
Architecture
Type
Licensed Architect
Address
Address
2
Rockville, MD 20854
Personal information
See more information about Andrew K. Chang at radaris.comName
Address
Phone
39 Chatterly Ct, Germantown, MD 20874
3 John Adams Ln, Elkton, MD 21921
5266 Pine Bark Ct, Columbia, MD 21045
8221 Raymond Ln, Potomac, MD 20854
99 W Main St, Westminster, MD 21157
Professional information
See more information about Andrew K. Chang at trustoria.com
Andrew Chang - Rockville, MD
Andrew Chang - Rockville, MD
Work:
Chillum-Adelphi Fire Station
P.G. County, MD Alpha Phi Omega
Service Chair Optimer Pharmaceuticals
Research Assistant Nova In-Vitro Fertilization
International Student Volunteers Nova In-Vitro Fertilization - Mountain View, CA
Phlebotomist Assistant Neuroscience Laboratory - College Park, MD
Research Assistant
P.G. County, MD Alpha Phi Omega
Service Chair Optimer Pharmaceuticals
Research Assistant Nova In-Vitro Fertilization
International Student Volunteers Nova In-Vitro Fertilization - Mountain View, CA
Phlebotomist Assistant Neuroscience Laboratory - College Park, MD
Research Assistant
Shielded Access Apparatus For Use In An Enclosure For Preventing Propagation Of Electromagnetic Energy Into Or Out Of The Enclosure
Shielded Access Apparatus For Use In An Enclosure For Preventing Propagation Of Electromagnetic Energy Into Or Out Of The Enclosure
US Patent:
4841692, Jun 27, 1989
Filed:
Jan 29, 1988
Appl. No.:
7/150069
Inventors:
Donald N. Coupard - Bethesda MD
Andrew K. Chang - Potomac MD
John E. Fuller - Brookeville MD
Angelo J. Mauriello - Southampton PA
Andrew K. Chang - Potomac MD
John E. Fuller - Brookeville MD
Angelo J. Mauriello - Southampton PA
International Classification:
H05K 900, E06B 722, E06B 104
US Classification:
52173R
Abstract:
A shielded access apparatus for enabling personnel access to an enclosure which is shielded to prevent propagation of electromagnetic energy into and out of the enclosure. The apparatus includes an access enclosure of electrically conductive material and first and second openings in the enclosure. A shield is positioned in the enclosure between the first and second openings for preventing radiated electromagnetic energy passing through one of the openings from travelling along a straight line to the other opening. Absorption material lines the interior of the enclosure and absorbs radiated electromagnetic energy passing through the enclosure.
Electromagnetic Radiation Shielding Enclosure And Shielding Components
Electromagnetic Radiation Shielding Enclosure And Shielding Components
US Patent:
4823523, Apr 25, 1989
Filed:
Jan 29, 1988
Appl. No.:
7/150286
Inventors:
Donald N. Coupard - Bethesda MD
Andrew K. Chang - Potomac MD
John E. Fuller - Brookeville MD
Angelo Mauriello - Southampton PA
Andrew K. Chang - Potomac MD
John E. Fuller - Brookeville MD
Angelo Mauriello - Southampton PA
International Classification:
E04B 202
US Classification:
52173R
Abstract:
A shielding enclosure for preventing propagation of electromagnetic radiation into or out of the enclosure comprising a support structure and a plurality of sheets of electrically conductive material supported thereon. Each of the sheets has an edge extending therearound and a region of overlap extending inwardly of and along the edge. The region is in overlapping engagement with the region of overlap of sheets adjacent thereto on the support structure so as to define a wave guide gap. Adjacent sheets are pressed together by pressure plates at the overlapping regions to maintain a gap width through which the electromagnetic radiation cannot propagate. Shielding components used to construct a shielding enclosure are also disclosed.