JOHN B MCDONOUGH
Engineers in Allison Park, PA
License number
Pennsylvania PE006858E
Category
Engineers
Type
Professional Engineer
Address
Address
Allison Park, PA 15101
Professional information
Gas Filter
US Patent:
4365981, Dec 28, 1982
Filed:
Jul 1, 1981
Appl. No.:
6/279589
Inventors:
John B. McDonough - Allison Park PA
Assignee:
Mine Safety Appliances Company - Pittsburgh PA
International Classification:
B01D 5314, B01D 4630
US Classification:
55497
Abstract:
A gas filter is formed from two uniformly spaced nesting screens extending along a serpentine path, with the space between them filled with granular filtering material. Each screen has laterally spaced areas curved in one direction lengthwise of the serpentine path and alternating with laterally spaced areas curved in the opposite direction and integrally joined thereto to thereby provide the screen with a continuous curvature from end to end of the serpentine path.