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:
Apr. 14, 2009
Filed:
May. 08, 2006
Bradley Engstrand, Hartford, WI (US);
Bradley Engstrand, Hartford, WI (US);
Phaedrus, LLC, Hartford, WI (US);
Abstract
A system and a method detect a position of a movable element within the interior of the compartment via a light source and/or a light sensor. The light sensor is connected to a platform and/or to a film for detecting an intensity of a light within the interior of the compartment. The film, a bottom surface of an end cap and/or a surface of the movable element and/or the compartment attenuate light within the interior of the compartment and/or within an interior of the end cap. The intensity of the light detectable by the light sensor corresponds to the position of the movable element within the interior of the compartment. The position of the movable element within the interior of the compartment is detected by the light sensor via the intensity of the light detectable by the light sensor. The film, the platform, the bottom surface of the end cap and/or the surface of the movable element and/or of the compartment minimize diffraction of the light within the interior of the compartment and/or within the interior of the end cap.