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:
Jan. 14, 2003
Filed:
Feb. 28, 2001
Kevin Woolsey, Snohomish, WA (US);
Jeff Lamping, Mountlake Terrace, WA (US);
John Marler, Woodinville, WA (US);
Bernie Burreson, Seattle, WA (US);
Steve Knudson, Seattle, WA (US);
Eldec Corporation, Lynnwood, WA (US);
Abstract
A core of a proximity sensor is made of a highly permeable metal and is shaped and sized to operate as a saturable core proximity sensor, a variable reluctance proximity sensor, and an eddy current proximity sensor. The core has a cross-sectional shape including a head portion, two legs extending from the head portion, and two foot portions (feet) extending from the two legs. The head portion forms a substantially planar section along the upper surface and is perpendicular to the sectional direction created by the two legs. The sectional direction of the two legs are perpendicular to the sectional direction of the two feet. The two feet are in a common plane along the bottom surface. Both foot portions are also parallel to the head portion. The cross-sectional shape of the core may further comprises two tail portions (tails), wherein each tail extends from one of the two foot portions in a direction toward the upper surface.