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. 06, 2004
Filed:
Feb. 26, 2003
Applicant:
Inventor:
Philip R. Hall, Ottsville, PA (US);
Assignee:
Other;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G08B 1/314 ;
U.S. Cl.
CPC ...
G08B 1/314 ;
Abstract
A method and apparatus for locating an object. In one embodiment, the occurrence of a plurality of transitions between a first light level and a second light level is detected. If a time period between at least some of the transitions is determined to be less than a predetermined value, an alert signal is emitted. In another embodiment, the alert signal is emitted if an ambient light level is detected to be below a predetermined threshold and the object is detected to not be in a predetermined axial orientation.