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.

Date of Patent:
Aug. 07, 2007

Filed:

Mar. 21, 2005
Applicants:

Glenn A. Forrest, Bow, NH (US);

James M. Bailey, Concord, NH (US);

Washington Lamar, Mont Vernon, NH (US);

Inventors:

Glenn A. Forrest, Bow, NH (US);

James M. Bailey, Concord, NH (US);

Washington Lamar, Mont Vernon, NH (US);

Assignee:

Allegro Microsystems, Inc., Worcester, MA (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01B 7/14 (2006.01);
U.S. Cl.
CPC ...
Abstract

A proximity detector has a sequential flow state machine to identify states associated with a magnetic field signal provided by a magnetic field sensing element. The proximity detector can include a vibration processor to identify a vibration in response to the states.


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