초록 ▼

An improved self-tightening fitting and fitting connector for use with soft tubing includes a stem having a flange at one end over which a piece of soft tubing may be pulled, and a sleeve which is slidable over the stem and has an inwardly extending lip with a contact surface thereon. A releasable r

An improved self-tightening fitting and fitting connector for use with soft tubing includes a stem having a flange at one end over which a piece of soft tubing may be pulled, and a sleeve which is slidable over the stem and has an inwardly extending lip with a contact surface thereon. A releasable ratchet mechanism prevents movement of the sleeve away from the flange, so that tubing can be secured tightly between the contact surface of the sleeve and the flange. When tension is applied to the tubing, the lip portion catches on the tubing, urging the contact surface tighter against the flange, preventing the tubing from creeping through the clamping couple formed by the sleeve and flange. When it is desired to disconnect the tubing, the ratchet mechanism can be released. The method of use is also disclosed.

대표청구항 ▼

An improved fitting for use with soft tubing, comprising: a body section defining an axially extending passage therein; stem means adapted for receiving a section of soft tubing over at least a portion thereof, said stem means extending axially from said body section and having a passage defined the

An improved fitting for use with soft tubing, comprising: a body section defining an axially extending passage therein; stem means adapted for receiving a section of soft tubing over at least a portion thereof, said stem means extending axially from said body section and having a passage defined therein which is in communication with said body section passage; radially extending flange means at an end of said stem means that is distal from said body section and adapted for sealing against an inner wall of the tubing; sleeve means mounted for sliding movement on said stem means and having an annular contact surface defined thereon adapted for sealing against an outer wall of the tubing; the radial distance between said flange means and the contact surface of said sleeve means being less than the thickness of the soft tubing; stop means intermediate of the radially extending flange means and the body section for limiting axial movement of the sleeve means toward the radially extending flange means; and means for releasably locking said sleeve means with respect to said stem means, whereby a section of soft tubing may be tightly secured, in communication with said passages, between said sleeve means and said flange means.