The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 08, 1976
Filed:
Oct. 23, 1974
Applicant:
Inventors:
Horace H Homer, Arlington, MA (US);
Richard S Doron, Winchester, MA (US);
Donald J Grolemund, Kersey, PA (US);
Assignee:
GTE Sylvania Incorporated, Danvers, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B05C / ; B05C / ;
U.S. Cl.
CPC ...
118-7 ; 118312 ; 118317 ; 118D / ;
Abstract
The powder used in applying a light diffusing coating to the inner wall of an incandescent lamp bulb is deposited substantially free of clumps by, amongst other things, maintaining the powder in suspension in a closed container prior to deposition. The powder in said container is also maintained at a constant level. The powder is carried from the container to the lamp bulbs by a stream of air and is passed through a vortex nozzle which breaks up clumps or agglomerates of powder.