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:
Jan. 29, 2002
Filed:
Apr. 16, 1999
Shinichi Hirahata, Nagoya, JP;
Yasuhiro Ogawa, Nagoya, JP;
Tadanobu Chikamoto, Nagoya, JP;
Kazuyoshi Minaminaka, Nagoya, JP;
Brother Kogyo Kabushiki Kaisha, Nagoya, JP;
Abstract
A cutter shaft provided with a cutter as its lower tip is freely vertically movably disposed in a guide cylinder portion of a cutter holder A horizontal support body is supported in a hollow case portion A large diameter first steel ball and a small diameter second steel ball are supported in the horizontal support body separated by a suitable distance. The horizontal support body supports the steel balls exposed from a lower end of the horizontal support body but in a manner that prevents the steel balls from falling out of the horizontal support body A cover body is fixed on the upper surface of the horizontal support body to prevent the first and second steel balls from moving in a vertical direction. The side edges of the horizontal support body protrude from guide grooves formed inside surfaces of the hollow case portion An adjustment screw screwingly engaged in a lid portion presses downward on the cover body On the other hand, resilient plate springs extending downward from the cover body urge the cover body upward.