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:
Oct. 02, 1990
Filed:
Jan. 03, 1989
Sakuo Kurihara, Tochigi, JP;
Abstract
To prevent dust or muddy water from entering a hub housing or to prevent a hub clutch from being allowed to be inoperative, a hub clutch for selectively coupling or decoupling a wheel shaft to or from a clutch housing (to which a wheel is fixed), the hub clutch comprises a drive gear fixed to the wheel drive shaft; a slide gear axially slidably coupled to the clutch housing; a diaphragm fixed to the slide gear so as to partition an inner space of the clutch housing into an inner enclosed chamber and an outer enclosed chamber; and a control valve connected to an engine intake manifold vacuum, for selectively applying vacuum into the inner chamber and atmospheric pressure into the outer chamber or vice versa to move the diaphragm. Further, a piston plate and a spring can be used instead of the diaphragm.