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. 11, 2000
Filed:
Apr. 05, 1999
Edward A Ramsden, Kenosha, WI (US);
Arthur Douglas Guydan, Williams Bay, WI (US);
The Cherry Corporation, Waukegan, IL (US);
Abstract
A magnetic accelerometer detects the sharp lateral rocking movements of an unbalanced spinning tub of a washing machine. The accelerometer has a fixed and a movable magnet that are disposed at a rest position in spaced, magnetic attraction to each other. The movable magnet breaks away from the stationary magnet in response to vibration forces of a predetermined magnitude and frequency. When the magnet breaks away, it presses against an actuator button of a miniature switch and therefore signals an alarm condition. When the vibration forces are reduced below the trigger level, the movable magnet is pulled back to its rest position by magnetic attraction with the stationary magnet. The magnetic attraction of the stationary and movable magnets can be adjusted and the break away point can be set by applying an external magnetic field to the magnets.