Patent ID: 6520204
Filing Date: 2003-02-18
Classification: F16L,Y10T

Abstract:
A fluid supply apparatus comprising:a guide rail having a substantially rectangular cross section which is formed with a fluid supply passage in a longitudinal direction and which is provided with an opening for making communication between said fluid supply passage and the outside; a seal belt for closing said opening of said guide rail; an outer port cover which is formed with an outlet port communicating with said opening and which is provided displaceably in said longitudinal direction of said guide rail while making engagement with said seal belt; an inner port cover which is installed in said fluid supply passage of said guide rail, which is provided with a curved surface disposed at a substantially central portion, and which is provided to make displacement integrally with said outer port cover; a seal member which is interposed between said guide rail and said outer port cover, for surrounding said opening of said guide rail; and a pressing mechanism which is installed between said outer port cover and said inner port cover, for pressing said seal belt so that said seal belt is curved, wherein: said seal belt is pressed and curved toward said inner port cover by said pressing mechanism, and thus said opening is opened to make communication between said fluid supply passage and said outlet port.