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:
Jul. 12, 2011
Filed:
Dec. 20, 2005
Hiroshi Imai, Gyoda, JP;
Koichi Abe, Gyoda, JP;
Hiroshi Imai, Gyoda, JP;
Koichi Abe, Gyoda, JP;
Surpass Industry Co., Ltd., Gyoda-Shi, Saitama, JP;
Abstract
A rotary joint and a housing for a rotary joint include an insertion hole for receiving a rotary shaft, a plurality of housing segments arranged along the shaft, and a housing communicating hole formed in at least one of the housing segments. An annular groove permits communication between the shaft communicating hole and the housing communicating hole. An annular leakage-preventing member between the shaft and the housing blocks fluid movement in an axial direction of the shaft. The shaft includes a cylindrical shaft portion and a small-diameter portion formed at one end. At least one pair of rotating supports support the shaft and the housing. One of the rotating supports is disposed on the small-diameter portion. An outside diameter of one of the rotating supports is smaller than an outside diameter of the shaft and also is smaller than inside diameters of the plurality of housing segments.