Loading patent…
AssigneeMinnesota Mining and Manufacturing Company
InventorsJon M. Nornberg, Raymond L. Ferguson, David M. Stoen
Estimating the term…
A leak-resistant connection between two generally tubular members in which second tubular member is telescopically received in a first generally tubular member. There is at least one integral continuous annular stricture formed in the lumen of the first tubular member for engaging and sealing with the second tubular member. A second, integral stricture of larger profile may be provided as a stop to abut the end of the second tubular member. A method of making the connection is also disclosed. The method includes the step of forming the strictures in the tubular member by inserting a grooved mandril into the lumen of the tubular member and heating and applying pressure to the tubular member to form the strictures in the grooves in the mandril. The tubular member can be conveniently heated with RF energy applied through the mandril.
A method of making a connection between the ends of first and second generally tubular members, the method comprising:
A method of making a connection between the ends of first and second generally tubular members, the method comprising:
A method of making an improved tubular member for facilitating leak-resistant connections with other tubular members, the method comprising the steps of:
Dependencies are inferred from the claim text.