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:
Jun. 11, 1996
Filed:
Jun. 27, 1994
Applicant:
Inventor:
Aldo Filippi, Turin, IT;
Assignee:
Roltra Morse S.p.A., Rivoli, IT;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02P / ;
U.S. Cl.
CPC ...
318282 ; 318466 ; 49 26 ;
Abstract
A control device for detecting the presence of an obstacle on the basis of the current absorbed by the motor controlling the window in the course of an opening or closing stroke. For effectively distinguishing an obstacle from other factors, such as defects on the window guide resulting in a regular, local increase in current absorption, the current measurement is integrated and compared with threshold values varying within the stroke and describing a reference line consisting of a number of line portions, each equal in value to the integral of the current in a respective portion of the stroke in the absence of an obstacle.