DAVID L BERKEY
Respiratory Therapy in Johnstown, PA
License number
Pennsylvania YM003213L
Category
Medicine
Type
Respiratory Therapist
Address
Address
Johnstown, PA 15902
Personal information
See more information about DAVID L BERKEY at radaris.comName
Address
Phone
320 Nees Ave, Johnstown, PA 15904
322 Nees Ave, Johnstown, PA 15904
370 Luray Ave, Johnstown, PA 15904
401 Blue Diamond St, Johnstown, PA 15902
418 Y St, Derry, PA 15627
Professional information
Tunnel Liner Building Method And Building Panels Therefor
US Patent:
5980156, Nov 9, 1999
Filed:
Jun 8, 1998
Appl. No.:
9/092984
Inventors:
Frederick Morello - Johnstown PA
David B. Berkey - Johnstown PA
David B. Berkey - Johnstown PA
Assignee:
M. I. C. Industries, Inc. - Reston VA
International Classification:
E21D 1100, E04D 100
US Classification:
405151
Abstract:
Tunnel liners are formed from panels of arched sheet material. The panels include a central portion, inclined side portions and wing portions. One of the wing portions has a hook portion and the other of the wing portions has a receptacle portion. The hook portions and receptacle portions are constructed so as to snap-fit with respective receptacle portions and hook portions of adjacent panels. Panels can thus be more easily be assembled together. Panels can also be continuously seamed together from the underside, i. e. , from within an arched assembly of panels.