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:
Jun. 17, 1986
Filed:
Jun. 20, 1984
Mikio Ito, Jo, Sakura-shi, Chiba-ken, 285, JP;
Other;
Abstract
An arm extends out over the surface on which the ellipse is to be drawn, from a support in the form of a base plate with a handle that can be grasped to hold the support in a desired position. A piece of string is slackly fixed at two space sites along its length to two selected places spaced along the length of the arm of the support. A string-follower is provided in the form of a shaft having an arm radially and rotatably projecting from its lower end. At a site displaced from the shaft, a perforation is provided down through this arm. A drawing instrument is mounted to the string-follower so that its drawing tip underlies the lower opening of the perforation. The string extends down through the perforation to limit to limit the envelope of excursion of the string-follower in drawing an ellipse.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile