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:
Mar. 13, 1979
Filed:
Feb. 17, 1977
Fritz Giebler, Munich, DE;
Oskar Hotzel, Neuried, DE;
Siemens Aktiengesellschaft, Berlin & Munich, DE;
Abstract
A shifting arrangement is provided for the exact space positioning of a writing carriage for office, teletype or data typewriters in which the writing carriage is moved step-by-step alongside of a record structure in accordance with a predetermined character positioning pattern. The writing carriage is driven by a stepping motor which has a rotary field. A specific number of angle positions of the stepping motor field serve as basic advance positions of the stepping motor in order to compensate for the load angle of the stepping motor during running of the writing carriage. Such basic advance positions are assigned to each character positioning point of the positioning pattern. An electronic device is provided for triggering the rotary field of the stepping motor and automatically adjusting this rotary field to the corresponding basic advance position during running and setting the field to a rest position during stopping of the stepping motor in order to correct for the stepping motor load angle.