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:
Aug. 29, 2006
Filed:
Oct. 05, 2004
Mervin Bruce Perkins, Arvada, CO (US);
Eric John Perkins, Denver, CO (US);
Lawrence Alexander Duarte, Littleton, CO (US);
Kenneth Allen Bowers, Aurora, CO (US);
Mervin Bruce Perkins, Arvada, CO (US);
Eric John Perkins, Denver, CO (US);
Lawrence Alexander Duarte, Littleton, CO (US);
Kenneth Allen Bowers, Aurora, CO (US);
Display Devices, Inc., Arvada, CO (US);
Abstract
A ceiling-mounted projection system has a projector mounted above the ceiling, and a periscope assembly that can be moved by a motor along a vertical axis between a raised position in which the periscope assembly is retracted into the ceiling and a lowered position in which the lower portion of the periscope assembly extends below the ceiling. An upper mirror is mounted on the upper portion of the periscope assembly and aligned to reflect images from the projector in a downward direction when the periscope assembly is in the lowered position. A lower mirror is mounted on the lower portion of the periscope assembly and aligned to reflect the images from the upper mirror onto a viewing surface when the periscope assembly is in the lowered position.