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:
Sep. 28, 2010
Filed:
Mar. 09, 2006
Michiyasu Nosaka, Anjo, JP;
Yasuo Tabuchi, Toyoake, JP;
Motohiko Ueda, Okazaki, JP;
Yoshiki Tada, Okazaki, JP;
Michiyasu Nosaka, Anjo, JP;
Yasuo Tabuchi, Toyoake, JP;
Motohiko Ueda, Okazaki, JP;
Yoshiki Tada, Okazaki, JP;
DENSO CORPORATION, Kariya, JP;
Abstract
A power transmission device includes: a pulleyrotatably attached to a casing; a hubconnected to the pulleyby an engagement of protrusions with recesses; and a power shutoff memberinterposed between the huband a rotary shaft. The power shutoff member and the rotary shaftare joined to each other by means of screwing. When a water intrusion path formed between a hub side seating face of the hub and a shaft side seating faceof the rotary shaft is formed into a labyrinth structure, water is prevented from entering the seating face. An engagement portionon the power shutoff member side is engaged with a hub side engagement portionso that it can be accommodated in the hub side engagement portion, and the power shutoff member can be rotated together when the hub is rotated. An engagement gap formed between a power shutoff member side engagement portion and a hub side engagement portion in the radial direction perpendicular to an axis of the rotary shaft is in a range from 0.001 mm to 15% of a diameter of a circumscribed circle of the power shutoff member side engagement portion.