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 coaxially with the axially inner threaded end portion of the coupling nut/plug for sealing to an outer diameter surface of a tubular member having a locking surface spaced from the end of the tubular member;
a radially expandable and contractible retention device retained in the coupling nut/plug for axial movement relative to the tubular member during insertion of the tubular member into the adaptor, which coupling nut/plug has at an axially outer end thereof a central opening through which the tubular member 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 tubular member from the coupling nut/plug once inserted;
a support ring separate from or integral with the coupling nut/plug and axially interposed between the retention device and the tube seal; and
a body sealing surface or seal 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 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, comprises 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 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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Citations
17 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 coaxially with the axially inner threaded end portion of the coupling nut/plug for sealing to an outer diameter surface of a tubular member having a locking surface spaced from the end of the tubular member; a radially expandable and contractible retention device retained in the coupling nut/plug for axial movement relative to the tubular member during insertion of the tubular member into the adaptor, which coupling nut/plug has at an axially outer end thereof a central opening through which the tubular member 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 tubular member from the coupling nut/plug once inserted; a support ring separate from or integral with the coupling nut/plug and axially interposed between the retention device and the tube seal; and a body sealing surface or seal 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, 12, 13)
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14. 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 tubular member having a locking surface spaced from the end of the tubular member; a seal carrier contained within the coupling nut/plug, the seal carrier having an annular groove that opens to an axially outer end of the seal carrier and in which the tube sealing member is supported by the seal carrier; 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 tubular member 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 tubular member from the coupling nut/plug once inserted; wherein sealing and retention of the tubular member is effected within the confines of the coupling nut/plug and separate from and without requiring modification of the standard tube fitting/port body. - View Dependent Claims (15, 16, 17)
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Specification