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:
Aug. 22, 2000
Filed:
Oct. 22, 1998
Katsuhiko Sasaki, Anjo, JP;
Yukihiko Yamada, Anjo, JP;
Makita Corporation, Anjo, JP;
Abstract
A speed change device, preferably for a power tool, may include a first drive gear and a second drive gear mounted on a drive shaft, and may include a first driven gear and a second driven gear mounted on a driven shaft. When the second drive gear is in a first position, a first gear portion of the second drive gear engages the second driven gear, so that the rotational energy of the drive shaft is transmitted to the driven shaft via a first transmission path through the second drive gear and the second driven gear. When the second drive gear is in a second position, a second gear portion of the second drive gear engages the first drive gear, so that the rotational energy of the drive shaft is transmitted to the driven shaft via a second transmission path through the second drive gear, the first drive gear and the first driven gear.