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:
Nov. 07, 2017
Filed:
Feb. 12, 2015
Nhk Spring Co., Ltd., Yokohama-shi, Kanagawa, JP;
Nhk International Corporation, Wixom, MI (US);
Takahiro Nakamura, Yokohama, JP;
Kazuo Furukawa, Machida, JP;
Senri Moriyama, Yokohama, JP;
Ryuichi Sato, Yokohama, JP;
Shinichi Nishizawa, Walled Lake, MI (US);
NHK SPRING CO., LTD., Kanagawa, JP;
NHK INTERNATIONAL CORPORATION, Wixom, MI (US);
Abstract
A coil spring modeling apparatus includes a first attachment member disposed on a lower spring seat, a second attachment member disposed on an upper spring seat, an actuator unit formed of a Stewart-platform-type parallel mechanism, a spring height detection mechanism, and a controller. The spring height detection mechanism is constituted of displacement gauges such as a linear variable differential transformer. These gauges are provided on hydraulic cylinders, and detect amounts of displacement relative to the reference lengths of the hydraulic cylinders, respectively. A hydraulic pressure supply device is controlled by the controller and supplies fluid pressure according to the displacement detected by the gauges to the respective hydraulic cylinders.