Integrated Seal for Tube to Hose Connection

Abstract

A hose connector adapted to have a polymeric hose fitted on the outer periphery of the hose connector. The hose connector comprises a metal tubing and a sealing element. The sealing element includes a ring portion and a resilient member portion attached to the ring portion.

1 . A hose connector connecting a flexible polymeric hose fitted on the outer periphery of the hose connector, the hose connector comprising: 
 metal tubing member having a radial terminal end portion and defining an outer hose receiving surface; and    a sealing element including a rigid ring portion with a radial abutment surface abutting the terminal end of said metal tubing member, and a resilient member portion defining a skirt portion overlying a portion of said outer hose receiving surface wherein said rigid ring portion is made of a material different from said resilient member portion and is permanently attached to said resilient member portion    wherein said resilient member portion includes a bulge portion, said rigid ring portion is located radially inward of said bulge portion and includes a radially outer surface with said bulge portion in direct contact with said radially outer surface of said ring portion and said bulge portion extending radially outwardly from said radially outer surface of said ring portion.    
     
     
         2 . The hose connector as claimed in  claim 1  wherein said ring portion is made of metal and said resilient member portion is made of a polymeric material.  
     
     
         3 . The hose connector as claimed in  claim 1  wherein said skirt portion is located immediately radially outward of said end portion of said metal tube.  
     
     
         4 . The hose connector as claimed in  claim 1  wherein said ring portion includes an attachment end surface opposite said radial abutment surface and said resilient member portion includes an annular portion with said annular portion in contact with and attached to said attachment end surface of said ring portion.  
     
     
         5 . The hose connector as claimed in  claim 1  wherein said bulge portion and said skirt portion define a transition that narrows radially inward defining a radially inward channel circumferentially surrounding the outer surface of said resilient member portion.  
     
     
         6 . The hose connector as claimed in  claim 1  wherein said ring portion is formed from a metallic material.  
     
     
         7 . The hose connector as claimed in  claim 6  wherein said metallic material is selected from the group consisting of brass, aluminum, steel and stainless steel.  
     
     
         8 . The hose connector as claimed in  claim 1  wherein said ring portion is formed from polyamide and said resilient member portion is made from flurosilicone.  
     
     
         9 . The hose connector as claimed in  claim 1  wherein said ring portion material is polyamide and said resilient member portion is made of vulcanized rubber.  
     
     
         10 . The hose connector as claimed in  claim 8  wherein said polyamide is 12-carbon polyamide.  
     
     
         11 . The hose connector as claimed in  claim 8  wherein said polyamide is glass filled 12-carbon polyamide.  
     
     
         12 . A sealing element for a hose connector comprising: 
 an annular rigid ring portion having a radial abutment surface for abutting the end of a hose receiving tube and a radially outer surface;    a separate resilient member portion made of a different material than said rigid ring portion and permanently attached to said ring portion, said resilient member portion defining a bulge portion disposed generally radially outward of said ring portion and defining a radially inner surface, said radially inner surface of said bulge portion in direct contact with said radially outer surface of said ring portion; and    said resilient member portion further defining an annular skirt portion extending axially from said bulge portion said skirt portion including an inner tube contacting surface.    
     
     
         13 . A sealing element for a hose connection as claimed in  claim 12  wherein said skirt portion is conical and diverges in a direction away from said bulge portion.  
     
     
         14 . A sealing element for a hose connection as claimed in  claim 12  wherein said rigid ring portion includes an attachment end surface and said resilient member portion includes an annular portion extending axially from said bulge portion in the direction opposite said skirt portion; and 
 said annular portion of said resilient member portion is attached to said attachment end surface of said ring portion.    
     
     
         15 . A sealing element for a hose connection as claimed in  claim 12  wherein said bulge portion and said skirt portion define a transition that narrows radially inward defining a radially inward channel circumferentially surrounding the outer surface of said resilient member portion.  
     
     
         16 . The hose connector as claimed in  claim 12  wherein said ring portion is formed from a metallic material.  
     
     
         17 . The hose connector as claimed in  claim 16  wherein said metallic material is selected from the group consisting of brass, aluminum, steel and stainless steel.  
     
     
         18 . The hose connector as claimed in  claim 12  wherein said ring portion is formed from polyamide and said resilient member portion is made from flurosilicone.  
     
     
         19 . The hose connector as claimed in  claim 18  wherein said ring portion material is polyamide and said resilient member portion is made of vulcanized rubber.  
     
     
         20 . The hose connector as claimed in  claim 18  wherein said polyamide is 12-carbon polyamide.