Adaptor and Method For Converting Standard Tube Fitting/Port to Push-To-Connect Tube Fitting/Port
First Claim
1. An adaptor for converting to a push-to-connect tube fitting/port a standard tube fitting/port body having a threaded portion for threaded attachment of a nut/plug and a seal or sealing surface separate from the threaded portion of the standard tube fitting/port body, comprising:
- a coupling nut/plug having an axially inner threaded end portion for threaded attachment to the threaded portion of the fitting/port body;
an annular tube seal contained within the coupling nut/plug for sealing to an outer diameter surface of a tube (i.e. any tubular member) having a locking surface spaced from the end of the tube;
a radially expandable and contractible retention device retained in the coupling nut/plug, which coupling nut/plug has at an axially outer end thereof a central opening through which the tube can be inserted into the coupling nut/plug, whereby the locking surface can be engaged by the retention device to prevent axial withdrawal of the tube from the coupling nut/plug once inserted;
a support ring separate from or integral with the coupling nut/plug and axially interposed between the lock ring and the tube seal; and
a body sealing surface or seal integral with or separate from the annular tube seal for sealing to the seal or sealing surface of the standard tube fitting/port body.
2 Assignments
0 Petitions
Accused Products
Abstract
An adaptor (45) for converting to a push-to-connect tube fitting/port a standard tube fitting/port body (10, 110, 210, 310, 410, 510, 610) having a threaded portion (11) for threaded attachment of a nut/plug (12), comprises a coupling nut/plug (12, 112, 212, 312, 412, 512, 612) having an axially inner threaded end portion for threaded attachment to the threaded portion (11) of the fitting/port body (10); a tube sealing member (15, 115, 215, 315, 415, 515, 615) contained within the nut/plug (12) for sealing to a tube (19) having a locking surface (22) spaced from the end of the tube (19); and a retention device (23) retained in the nut/plug (12), which nut/plug (12) has at an axially outer end thereof a central opening through which the tube (19) can be inserted into the coupling nut/plug (12), whereby the locking surface (22) can be engaged by the retention device (23) to prevent axial withdrawal of the tube (19) from the coupling nut/plug (12) once inserted; wherein sealing and retention of the tube (19) is effected within the confines of the coupling nut/plug (12) and separate from and without requiring modification of the standard tube fitting/port body (10).
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Citations
25 Claims
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1. An adaptor for converting to a push-to-connect tube fitting/port a standard tube fitting/port body having a threaded portion for threaded attachment of a nut/plug and a seal or sealing surface separate from the threaded portion of the standard tube fitting/port body, comprising:
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a coupling nut/plug having an axially inner threaded end portion for threaded attachment to the threaded portion of the fitting/port body; an annular tube seal contained within the coupling nut/plug for sealing to an outer diameter surface of a tube (i.e. any tubular member) having a locking surface spaced from the end of the tube; a radially expandable and contractible retention device retained in the coupling nut/plug, which coupling nut/plug has at an axially outer end thereof a central opening through which the tube can be inserted into the coupling nut/plug, whereby the locking surface can be engaged by the retention device to prevent axial withdrawal of the tube from the coupling nut/plug once inserted; a support ring separate from or integral with the coupling nut/plug and axially interposed between the lock ring and the tube seal; and a body sealing surface or seal integral with or separate from the annular tube seal for sealing to the seal or sealing surface of the standard tube fitting/port body. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 13)
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12. An adaptor for converting to a push-to-connect tube fitting/port a standard tube fitting/port body having a threaded portion for threaded attachment of a nut/plug, comprising:
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a coupling nut/plug having an axially inner threaded end portion for threaded attachment to the threaded portion of the fitting/port body; a tube sealing member contained within the nut/plug for sealing to a tube (i.e. any tubular member) having a locking surface spaced from the end of the tube; and a retention device retained in the nut/plug, which nut/plug has at an axially outer end thereof a central opening through which the tube can be inserted into the coupling nut/plug, whereby the locking surface can be engaged by the retention device to prevent axial withdrawal of the tube from the coupling nut/plug once inserted; wherein sealing and retention of the tube is effected within the confines of the coupling nut/plug and separate from and without requiring modification of the standard tube fitting/port body.
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14. Adaptor for tubes made of metal having a threaded fitting body with an interior cone and being connected to a first tube and having a coupling nut screwed on the threaded fitting body and arranged for lockable receiving of the second push-in tube, whereby inside the coupling nut a chamber is arranged for receiving a resilient extendable lock ring and having an extension which enables the reception of the lock ring and whereby at the push-in tube on its outer circumference a locking face is provided behind which the lock ring is gripping when the push-in tube is inserted, characterized in that the threaded fitting body is a standardized 24°
- cone body and additionally to the lock ring a sealing ring is arranged within the chamber of the coupling nut which with a sealing grips behind the conical face of the threaded fitting body, which sealing ring on its side turned to the lock ring has a supporting face supporting axially the lock ring when the push-in tube is inserted, and that the locking face at the push-in tube is provided by deformation of the tube wall.
- View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
Specification