Tube fitting for stainless steel tubing

F - Mech Eng,Light,Heat,Weapons – 16 – L

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

F16L 19/10 (2006.01) F16L 19/065 (2006.01) F16L 19/14 (2006.01)

Patent

CA 2437710

A tube fitting (50) that uses only two components, namely a fitting body (54) and a fitting nut (52). The nut and body are adapted to be threadably coupled together by relative rotation therebetween. The nut includes an integral tube gripping ring (80) that cooperates with a camming surface (88) on the body when the fitting is made-up. The camming surface (88) preferably has a steep camming angle. The ring (80) is radially compressed against the tube outer wall to form a seal and a tight tube grip. The ring (80) also forms a line contact-type seal against the camming surface (88). The ring is designed to have a hinging action and to plastically deform during pull-up to embed into the tubing for excellent tube grip, and an axially adjacent swage or collect zone that isolates any stress riser resulting from the embedding action from vibration effects. The fitting components, and particularly the ring, may be hardened. the fitting may include a self-gauging feature to indicate sufficient pull-up to prevent excessive pull-up. Also provided is a single ferrule tube fitting that uses a steep camming surface (88) and is at least about 3.3 times harder than the stainless steel tube end.

L'invention porte sur un raccord pour tubes ne comportant que deux composants, c.-à-d. un corps et un écrou, se couplant par rotation relative. L'écrou est muni d'une bague intégrée de serrage du tube coopérant avec une surface de coincement de préférence fortement oblique du corps. Lors du serrage, la bague est comprimée radialement contre la paroi extérieure du tube formant un joint étanche et une prise serrée du tube, ainsi qu'un joint par contact linéaire contre la surface de coincement. La bague, conçue pour pouvoir se plier et se déformer plastiquement pendant le serrage et s'encastrer dans le tube en assurant une excellente prise, présente une zone rabattue ou en collet isolant de l'effet des vibrations tout décrochement produit par l'encastrement. Les composants du raccord et en particulier la bague peuvent être cémentés, et le raccord peut comporter une autojauge indiquant que le serrage est suffisant pour éviter le sur-serrage. L'invention porte également sur un raccord à une virole utilisant une surface de coincement fortement oblique et dont la dureté est au moins 3,3 fois celle du tube d'acier inox.

LandOfFree

Say what you really think

Search LandOfFree.com for Canadian inventors and patents. Rate them and share your experience with other people.

Rating

Tube fitting for stainless steel tubing does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Tube fitting for stainless steel tubing, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Tube fitting for stainless steel tubing will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFCA-PAI-O-1851602

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.