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. 03, 2002
Filed:
Apr. 13, 2000
Arata Iida, Toyota, JP;
Hiroyuki Wakabayashi, Kariya, JP;
Denso Corporation, Kariya, JP;
Abstract
A leakage restriction device for a refrigeration cycle of a vehicle air conditioner in which refrigerant flows has first and second rubber gaskets. The first and second gaskets are disposed between a pipe and a pipe joint of the refrigeration cycle for restricting refrigerant from leaking into atmospheric air. The first gasket is disposed on an atmospheric-air side and the second gasket is disposed on a refrigerant side between the pipe and the pipe joint. The first gasket has a gas permeability lower than that of the second gasket, and has a blistering-resistance which is inferior to that of the second gasket. As a result, refrigerant is restricted from leaking into atmospheric air, and a blister is restricted from being formed in the first and second gaskets even when a pressure of refrigerant is rapidly changed.