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:
May. 24, 1988
Filed:
Oct. 16, 1986
Ken Mizuta, Miyagi, JP;
Shiro Kondo, Miyagi, JP;
Alps Electric Co., Ltd., , JP;
Abstract
An automatic window regulator for automobiles includes a drive motor for lifting and lowering the window glass, and a detector for detecting when there is a foreign object jammed between the window glass as it is lifted or lowered and a window frame. The detector includes sensor means for measuring motor characteristic values of the drive motor and comparator means for comparing a first motor characteristic value measured by the sensor means with a second motor characteristic value measured by the sensor means a prescribed period of time prior to the first motor characteristic value and for generating a detected signal indicative of the jammed foreign object when any difference between the compared first and second motor characteristic values is greater than a predetermined range.