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:
Nov. 23, 2004
Filed:
Mar. 10, 2003
Kazuhiro Iwano, Tochigi, JP;
Showa Corporation, , JP;
Abstract
A boot for a universal joint is constructed by a boot body and a boot adapter. The one end of the boot is fitted on a propeller inner shaft via its one-end fitting portion and the other end of the boot is fitted on the outer race of the universal joint via its other-end fitting portion, thereby substantially covering the universal joint. The foregoing one-end fitting portion has an annular lip portion at its end portion. Passages for flowing air are formed on the one-end fitting portion and its annular lip portion, respectively. The passages communicate with each other through an annular partial passage between both passages. The existence of the annular partial passage increases the flowing resistance of air between the inside and the outside of the boot to reduce the pressure fluctuation in the boot and to improve the effectiveness in preventing splashed water or muddy water from intruding into the boot along with the suction of air.