David Liber resumes & CV records
Resumes
David Liber
Location:
Chicago, Illinois
Industry:
Airlines/Aviation
Skills:
Web Analytics, Database Marketing
David A LiberAcworth, GA
David Liber Phones & Addresses
Acworth, GA
Akron, OH
5919 Brookside Dr SE, Mableton, GA 30126
Social networks
David A Liber
Linkedin
Skills
Web Analytics • Database Marketing
Industries
Airlines/Aviation
Mentions for David A Liber
Publications & IP owners
Us Patents
Mine Roof Bearing Plate
US Patent:
4507020, Mar 26, 1985
Filed:
May 10, 1983
Appl. No.:
6/493373
Inventors:
Louie Zeitler - Brecksville OH
David C. Liber - North Royalton OH
David C. Liber - North Royalton OH
Assignee:
Die-Matic Corporation - Brooklyn Heights OH
International Classification:
E21D 2100
US Classification:
405259
Abstract:
An improved bearing plate is used to support a portion of a mine roof. The bearing plate is stamped from sheet metal and has elongated ribs which define grooves facing toward a back side of the bearing plate. Reinforcing members are disposed in the grooves and are fixedly connected to the bearing plate. The reinforcing members increase the resistance of the bearing plate to deflection under the influence of loads applied to the bearing plate by the mine roof.
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