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:
May. 22, 2001
Filed:
Aug. 04, 2000
Hiroyuki Kanari, Aizuhongo-machi, JP;
Takeshi Kurihara, Aizuwakamatsu, JP;
Micro Co., Ltd., , JP;
Abstract
A mechanical pencil comprises a main body, a lead-feeding mechanism disposed in the main body for gripping a lead at a lead-gripping position and for feeding the lead to an advanced position, and a mouthpiece connected to the main body. A slider is slidably fitted in the mouthpiece. A lead-holding member is disposed in the slider for frictionally holding the lead fed to the advanced position. A slider-resisting member is disposed in contact with the slider for applying a frictional resistance to the slider larger than a frictional resistance of the lead-holding member. Control portions are provided for controlling the frictional resistance applied to the slider by the slider-resisting member to bring the slider-resisting member in slight contact with or non-contact with the slider so that the frictional resistance of the slider-resisting member is smaller than the frictional resistance of the lead-holding member in a region corresponding to a return amount of the lead when the lead fed to the advanced position by the lead-feeding mechanism returns to the lead-gripping position.