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. 28, 1987
Filed:
Jun. 24, 1985
Applicant:
Inventors:
Rudolf Kressirer, Frankfurt am Main, DE;
Siegfried Oehler, Hofheim am Taunus, DE;
Assignee:
Hoechst Aktiengesellschaft, Frankfurt, DE;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02P / ;
U.S. Cl.
CPC ...
318696 ; 318685 ;
Abstract
In the method for detecting step losses in stepping-motor-driven actuating devices, a reference position of the actuating device is used for generating a sequence of drive pulses for the stepping motor. Simultaneously, the motor rotation is used for generating a pulse sequence which is compared at the rate of the drive pulses with a pattern, specific to the type of construction, of the stepping motor.