THOMAS PETER DE GRANDIS
Cosmetology in Chicago, IL
License number
Virginia 1201058755
Issued Date
Apr 15, 1988
Expiration Date
Apr 30, 1998
Category
Cosmetologist License
Type
Cosmetologist
Address
Address
Chicago, IL
Professional information
Shadow Mask Thermal Compensating Assembly
US Patent:
3935497, Jan 27, 1976
Filed:
Jul 5, 1968
Appl. No.:
4/742651
Inventors:
Richard H. Cowles - Elmhurst IL
Thomas P. De Franco - Norridge IL
Roy Maskell - Oak Park IL
Thomas P. De Franco - Norridge IL
Roy Maskell - Oak Park IL
Assignee:
Admiral Corporation - Chicago IL
International Classification:
H01J 2907, H01J 3120, H01J 2902
US Classification:
313405
Abstract:
Three substantially L-shaped bimetallic brackets accurately secured to the frame of a color television picture tube undergo corrective flexures in response to temperature variations. These flexures compensate for the thermal expansion of the shadow mask by maintaining the mask in proper alignment between the glass panel and the electron source over the operating temperature range of the picture tube.