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:
Aug. 16, 1988
Filed:
Sep. 16, 1986
Katsuyoshi Fukaya, Obu, JP;
Katsumi Mineyama, Obu, JP;
Aisan Kogyo Kabushiki Kaisha, Aichi, JP;
Abstract
A step motor of the linear type has a shaft threadedly engaged with an inner hole of a rotor and is slidably supported for axial movement by a front bearing and a rear bearing. A stopper pin that abuts on a stationary portion at the rear end of travel projects from an outer circumferential portion of the shaft. The shaft is moved in the axial direction by the rotation of the rotor and the front shaft bearing is provided with a slot allowing the stopper pin to pass through. Consequently, when the shaft is advanced, the stopper pin for stopping the rear end of travel does not abut on the front bearing, and the advance of the shaft is not limited. The slot, therefore, allows the stroke of the shaft to be lengthened without lengthening the front portion of the housing.