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.:

US 8803026 B1

PDF
Full Text
Expired
Date of Patent:
Aug. 12, 2014

Filed:

Oct. 14, 2011
Applicant:

Shigeru Yokoi, Chiyoda-ku, JP;

Inventor:

Shigeru Yokoi, Chiyoda-ku, JP;

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B23K 26/04 (2014.01); B23K 26/00 (2014.01);
U.S. Cl.
CPC ...
Abstract

Provided are: a table on which a workpiece is placed, a laser oscillator emitting a laser beam; a light-guide optical system deflecting the beam emitted from the oscillator; a cylindrical extensible bellows surrounding an optical path of the beam after the light-guide optical system deflects the beam; a bend mirror moving in an axial direction of the bellows while extending/contracting the bellows and deflecting the beam having passed through the bellows toward the table; a machining head irradiating the workpiece with the beam deflected by the mirror; an abnormality detector including a beam-sensor light-emitting unit emitting a beam advancing parallel with an axis of the bellows and a beam-sensor light-receiving unit measuring the amount of received light of the beam; and a control device bringing down the laser oscillator when the amount of received light of the beam in the beam-sensor light-receiving unit falls below a first threshold.


Find Patent Forward Citations

Yokoi, Shigeru. (2014). Laser machining device and bellows device (U.S. Patent No. 8803026). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/8803026

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