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. 02, 2003
Filed:
Jan. 16, 2001
Isao Nagashima, Kanagawa, JP;
Katoh Electrical Machinery Co., Ltd., Kanagawa, JP;
Abstract
In order to attain a small-sized opening and closing device suitable for use especially with a portable telephone which is so constructed to reduce cost by minimizing the number of parts to simplify the structure thereof, and to achieve a light pushing operation on a push-button, the present invention is composed of a shaft, a slider cam attached to the shaft slidably in an axial direction, having a cam portion in one end portion, a first compression spring interposed resiliently between the slider cam and the shaft, an inner cam attached rotatably relative to the shaft, having a cam portion disposed on a side thereof facing the cam portion of the slider cam, an outer cam attached to the shaft, accommodating the inner cam rotatably therein, with a cam portion thereof provided on a side facing the cam portion of the slider cam, a slide key disposed non-rotatably and slidably in an axial direction relative to the outer cam, for arresting and releasing the inner cam, a push-button disposed in one end portion of the slide key, and a second compression spring interposed resiliently between the push-button and/or the slide key and the outer cam, with a weaker resilient force than that of the first compression spring.