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:
Dec. 29, 1987
Filed:
Apr. 13, 1987
NHK Spring Co. Ltd., Yokohama, JP;
Abstract
A coil-spring winding apparatus according to the present invention comprises a guide rail extending along the axis of a mandrel, and a carriage movably supported by the guide rail. The carriage is fitted with first and second guide rollers. The second guide roller, which is spaced from the first guide roller in the radial direction thereof, guides the coil forming a coil spring toward the first guide roller. The first guide roller is moved in the axial direction of the mandrel, at a speed determined by the rotating speed of the mandrel, so that the coil is wound at predetermined pitches. The second guide roller can pivot around a point near the point of contact between the first guide roller and the coil. The first guide roller is oriented always in the same direction as the second guide roller. The direction of these two guide rollers is changed by means of an actuator, depending on the pitch angle of the coil spring.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile