Patent EP0212883A2 successfully refreshed from Google Patents.
EP0212883A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Improvements in or relating to tube couplings
Assignee: Individual
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Filing: 1986-07-30
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Granted: —
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Expires: 2006-07-30
Abstract
Abstract The disclosure relates to a tube coupling (10) comprising a body (11) having a throughway (12) open at one end to receive a tube (14) to be secured in the body by a collet (24) having resilient arms (25) which are compressed into gripping engagement with the tube by a tapered cam surface (23) formed on a part of the body. In order to support the tube where it is compressed by the resilient arms of the collet, an insert sleeve (29) is provided extending into the tube (14) and having an integral cruciform (30) extending across the sleeve at the location where the collet bears on the tube to support the tube against collapse in that region.
Inventors
- 👤 John Derek Guest
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-08 17:03
CPC Classifications
F; F16; F16L; F16L37/00; F16L37/08; F16L37/084; F16L37/092; F16L37/0925; F16L37/0926; F16L37/0927
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
138 words
A tube coupling comprising a body having a throughway open at one end to receive a tube, a collet insertable in said one end of the throughway and having a plurality of resilient arms extending intothe throughway to encircle and grip the tube extending through the collet into the throughway, a frusto-conical cam surface in the throughway tapered towards said one end of the throughway to engage the collet arms and, with moverment of the collet towards said open end of the throughway, to force the collet arms inwardly into gripping engagement with the tube and sleeve means to engage in the tube in the region engaged by said resilient arms and bracing means for bracing the sleeve means within said region to support the sleeve and thereby the tube where the resilient arms bear on the tube.
Claim 2
Dependent Claim
138 words
A tube coupling comprising a body having a throughway open at one end to receive a tube, a collet insertable in said one end of the throughway and having a plurality of resilient arms extending intothe throughway to encircle and grip the tube extending through the collet into the throughway, a frusto-conical cam surface in the throughway tapered towards said one end of the throughway to engage the collet arms and, with moverment of the collet towards said open end of the throughway, to force the collet arms inwardly into gripping engagement with the tube and sleeve means to engage in the tube in the region engaged by said resilient arms and bracing means for bracing the sleeve means within said region to support the sleeve and thereby the tube where the resilient arms bear on the tube.
Claim 3
Dependent Claim
53 words
A coupling as claimed in claim 1 wherein the sleeve means comprise a thin wall rigid sleeve to extend from the end of the tube in the throughway to the region of the tube engaged by the resilient arms of the collet, and bracing means being provided in the sleeve in said region.
Claim 4
Dependent Claim
22 words
A coupling as claimed in claim 2 wherein the bracing means comprise a transverse wall or walls extending across the sleeve means.
Claim 5
Dependent Claim
32 words
A coupling as claimed in claim 3 wherein the sleeve means has an integral cruciform element disposed therein in said region where the collet arms engaged to the tube encircle the sleeve.
Claim 6
Dependent Claim
61 words
A coupling as claimed in any of the preceding claims wherein said sleeve means has an outwardly extending flange at the end remote from the bracing means to receive on one side an end of the tube to be secured in the coupling and to engage on the other side a shoulder in the throughway of the body of the coupling.
Claim 7
Dependent Claim
30 words
A coupling as claimed in claim 5 wherein said other side of the flange is formed with an angular nrojection to engage and seal against said shoulder in the throughway.
Claim 8
Dependent Claim
75 words
A coupling as claimed in claim 5 or claim 6 wherein the throughway has a portion extending from said shoulder towards the open end of the throughway having an internal diameter equivalent to the external diameter of the tube and the outer diameter of the flange on the sleeve is of similar diametere to the said part of the throughway whereby the tube and flange are a close fit in that part of the throughway.
Claim 9
Dependent Claim
36 words
A coupling as claimed in any of claims 2 to 7 wherein an annular seal is mounted in the throughway adjacent the collet to engage the outer surface of the tube and form a seal therewith.
Claim 10
Dependent Claim
37 words
A tube coupling as claimed in claim 8 wherein the throughway is formed with an annular step facing towards the siad open end of the throughway adjacent to the collet against which an 0-ring seal is dispoised.
Claim 11
Dependent Claim
23 words
A coupling as claimed in any of claims 2 to 4 wherein the sleeve is formed integrally with the body in the throughway.
Claim 12
Dependent Claim
26 words
A coupling as claimed in claim 10 wherein an annular recess is formed in the body around the sleeve to receive the end of the tube.
Claim 13
Dependent Claim
47 words
A coupling as claimed in claim 10 or claim 11 wherein the throughway is formed with an annular step adjacent to the collet encircling the sleeve and an 0-ring seal is disposed against the step to seal with the outer surface of the tube encircling the sleeve.
References Cited (Backward Citations)
No citation records indexed.
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