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:
Jul. 18, 1989
Filed:
Jun. 16, 1988
Applicant:
Inventors:
Walter Glass, Northfield, IL (US);
Herman van der Vaart, Chicago Heights, IL (US);
Assignee:
Litecell, Inc., Skokie, IL (US);
Primary Examiner:
Int. Cl.
CPC ...
F21V / ;
U.S. Cl.
CPC ...
362342 ; 362291 ;
Abstract
A light fixture including a louver assembled from blades formed of thin metal strips. The blades each have separate parabolic lower sidewalls and upper sidewalls. The parabolic upper sidewalls terminate in edge strips which overlap to close the blades when the blades are nested to form the louver. Nesting of the blades forces the sidewalls together against a resilient bias, the bias tending to rigidify the louver after assembly.