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:
Apr. 03, 2001
Filed:
Apr. 05, 1999
Hitoshi Sato, Nagaoka, JP;
Koichi Sato, Nagaoka, JP;
Hiroyasu Numaya, Nagaoka, JP;
Hiroyuki Matsuda, Nagaoka, JP;
Masaru Iwahashi, Nagaoka, JP;
Keiji Tsurumaki, Nagaoka, JP;
Koichi Jinushi, Nagaoka, JP;
Nippon Seiki Co., Ltd., Niigata, JP;
Abstract
A stepping motor type indicator provided with unambiguous stable points having a holding force in a non-excited condition sufficient to suppress undesirable movements of a pointer. The stepping motor type indicator includes a stepping motor (,) having a rotor (,) with an output shaft (,) and stators (A, B). Yokes (,) have a plurality of pole teeth (,) extending toward curved outer surfaces of the rotor. The pole ends of a specific pole tooth (,) chosen from one of the plurality of pole teeth is made to have a pole end area different than that of the remaining pole teeth. This structure produces unambiguous stable points (“a”-“l”) and produces strong holding forces so that an attractive force exerted by the stable point (“a”) on the pointer (,) toward stopper pin (,) is increased to positively suppress undesirable movements of pointer (,).