US3887221A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Joint coupling
Assignee: Bio Rad Laboratories Inc
•
Filing: 1973-06-15
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Granted: 1975-06-03
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Expires: 1993-06-15
Abstract
Abstract Two pieces of tubing are coupled by cooperation of two sleeves. In one embodiment of the invention the tubing is relatively substantially rigid, a relatively distortable connecting sleeve is disposed around the tubing at the juncture, and a relatively substantially rigid locking sleeve having an inside taper is slipped over the relatively distortable sleeve. In a second embodiment the tubing is relatively distortable, a relatively substantially rigid connecting sleeve is disposed within the tubing at the juncture and a relatively substantially rigid locking sleeve having an inside taper is slipped over the tubing at the junction. In both embodiments the locking sleeve is dimensioned so that its inside taper squeezes the tubing pieces and the connecting sleeve together.
Inventors
- 👤 Niels O Young
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:21
CPC Classifications
F; F16; F16L; F16L25/00; F16L25/14; F16L21/00; F16L21/002; F16L21/02; F16L21/025; F16L25/0072; F16L31/00; F16L49/00; F16L49/04; Y; Y10; Y10S; Y10S285/00; Y10S285/911
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
107 words
A coupling, comprising in combination: a pair of elongate tubes; a connecting sleeve; and a relatively substantially rigid locking sleeve comprising a one piece, relatively short cylinder having an inside taper: one of said pair of elongate tubes or said connecting sleeve being relatively substantially rigid and the other being relatively distortable, said pair and said connecting sleeve being dimensioned so as to be engageable with each other at a junction, said locking sleeve surrounding said relatively distortable one at said junction and being dimensioned so that its inside taper distorts said relatively distortable one and squeezes said pair and said connecting sleeve together adjacent said junction.
Claim 2
Dependent Claim
107 words
A coupling, comprising in combination: a pair of elongate tubes; a connecting sleeve; and a relatively substantially rigid locking sleeve comprising a one piece, relatively short cylinder having an inside taper: one of said pair of elongate tubes or said connecting sleeve being relatively substantially rigid and the other being relatively distortable, said pair and said connecting sleeve being dimensioned so as to be engageable with each other at a junction, said locking sleeve surrounding said relatively distortable one at said junction and being dimensioned so that its inside taper distorts said relatively distortable one and squeezes said pair and said connecting sleeve together adjacent said junction.
Claim 3
Dependent Claim
107 words
A coupling, comprising in combination: a pair of elongate tubes; a connecting sleeve; and a relatively substantially rigid locking sleeve comprising a one piece, relatively short cylinder having an inside taper: one of said pair of elongate tubes or said connecting sleeve being relatively substantially rigid and the other being relatively distortable, said pair and said connecting sleeve being dimensioned so as to be engageable with each other at a junction, said locking sleeve surrounding said relatively distortable one at said junction and being dimensioned so that its inside taper distorts said relatively distortable one and squeezes said pair and said connecting sleeve together adjacent said junction.
Claim 4
Dependent Claim
107 words
A coupling, comprising in combination: a pair of elongate tubes; a connecting sleeve; and a relatively substantially rigid locking sleeve comprising a one piece, relatively short cylinder having an inside taper: one of said pair of elongate tubes or said connecting sleeve being relatively substantially rigid and the other being relatively distortable, said pair and said connecting sleeve being dimensioned so as to be engageable with each other at a junction, said locking sleeve surrounding said relatively distortable one at said junction and being dimensioned so that its inside taper distorts said relatively distortable one and squeezes said pair and said connecting sleeve together adjacent said junction.
Claim 5
Dependent Claim
48 words
A coupling as defined in claim 1 wherein said tubing comprises a pair of elongate tubes formed of relatively substantially rigid material, and said Connecting sleeve comprises a relatively short cylinder formed of relatively deformable material and is disposed around the ends of said tubes at said junction.
Claim 6
Dependent Claim
22 words
A coupling as defined in claim 2 wherein said tubing is flared outwardly for a distance adjacent its ends at said junction.
Claim 7
Dependent Claim
27 words
A coupling as defined in claim 3 wherein the inside diameter of said connecting sleeve is smaller than the outside diameter of said tubing at said flares.
Claim 8
Dependent Claim
14 words
A coupling as defined in claim 2 wherein said relatively deformable material is resilient.
Claim 9
Dependent Claim
48 words
A coupling as defined in claim 1 wherein said tubing comprises a pair of elongate tubes formed of relatively deformable material, and said connecting sleeve comprises a relatively short cylinder formed of relatively substantially rigid material and is disposed within the ends of said tubes at said junction.
Claim 10
Dependent Claim
24 words
A coupling as defined in claim 6 wherein said connecting sleeve is flared outwardly for a distance adjacent at least one of its ends.
Claim 11
Dependent Claim
30 words
A coupling as defined in claim 7 wherein the inside diameter of said tubing adjacent its ends is smaller than the outside diameter of said connecting sleeve at said flares.
Claim 12
Dependent Claim
15 words
A coupling as defined in claim 6 wherein said relatively deformable material is elastically deformable.
Claim 13
Dependent Claim
71 words
A coupling comprising in combination: a pair of relatively substantially rigid tubes aligned end-to-end at a junction; a relatively distortable inner sleeve disposed around said pair at said junction; and a relatively substantially rigid outer sleeve comprising a one piece, relatively short cylinder having an inside taper disposed around said inner sleeve at said junction and distorting said inner sleeve so as to squeeze said tubes and said inner sleeve together.
Claim 14
Dependent Claim
71 words
A coupling comprising in combination: a pair of relatively substantially rigid tubes aligned end-to-end at a junction; a relatively distortable inner sleeve disposed around said pair at said junction; and a relatively substantially rigid outer sleeve comprising a one piece, relatively short cylinder having an inside taper disposed around said inner sleeve at said junction and distorting said inner sleeve so as to squeeze said tubes and said inner sleeve together.
Claim 15
Dependent Claim
16 words
A coupling as defined in claim 10 wherein said pair have substantially the same cross sections.
Claim 16
Dependent Claim
19 words
A coupling as defined in claim 10 wherein said pair are flared outwardly for a distance adjacent said ends.
Claim 17
Dependent Claim
73 words
A coupling comprising in combination: a pair of tubes which are relatively deformable at least at the ends thereof, coaxially aligned end-to-end at a junction; a relatively substantially rigid inner sleeve interconnecting said pair at said junction; and a relatively substantially rigid outer sleeve having an inside taper disposed around said pair at said junction and distorting said pair so as to squeeze said tubes and said inner sleeve together at said junction.
Claim 18
Dependent Claim
73 words
A coupling comprising in combination: a pair of tubes which are relatively deformable at least at the ends thereof, coaxially aligned end-to-end at a junction; a relatively substantially rigid inner sleeve interconnecting said pair at said junction; and a relatively substantially rigid outer sleeve having an inside taper disposed around said pair at said junction and distorting said pair so as to squeeze said tubes and said inner sleeve together at said junction.
Claim 19
Dependent Claim
16 words
A coupling as defined in claim 13 wherein said pair have substantially the same cross sections.
Claim 20
Dependent Claim
24 words
A coupling as defined in claim 13 wherein said inner sleeve is flared outwardly for a distance adjacent at least one of its ends.
Claim 21
Dependent Claim
96 words
A coupling, comprising in combination: a pair of elongate tubes; and a relatively substantially rigid locking sleeve having an inside taper; one of said pair of elongate tubes being substantially rigid and the other being relatively distortable, said pair being dimensioned so that an end of said relatively distortable tube may be disposed around an end of said substantially rigid tube at a junction; a relatively substantially rigid outer sleeve having an inside taper disposed around said relatively distortable tube at said junction and distorting said relatively distortable tube so as to squeeze said tubes together.
Claim 22
Dependent Claim
96 words
A coupling, comprising in combination: a pair of elongate tubes; and a relatively substantially rigid locking sleeve having an inside taper; one of said pair of elongate tubes being substantially rigid and the other being relatively distortable, said pair being dimensioned so that an end of said relatively distortable tube may be disposed around an end of said substantially rigid tube at a junction; a relatively substantially rigid outer sleeve having an inside taper disposed around said relatively distortable tube at said junction and distorting said relatively distortable tube so as to squeeze said tubes together.
Claim 23
Independent Claim
75 words
A method of coaxially coupling a pair of relatively substantially rigid elongate tubes end-to-end at a junction comprising: disposing around said junction a relatively distortable sleeve, and disposing around said relatively distortable sleeve a relatively substantially rigid sleeve comprising a one piece, relatively short cylinder having an inside taper such that said relatively substantially rigid sleeve distorts said relatively distortable sleeve whereby said pair and said relatively distortable sleeve are squeezed together at said junction.
Claim 24
Independent Claim
75 words
A method of coaxially coupling a pair of relatively substantially rigid elongate tubes end-to-end at a junction comprising: disposing around said junction a relatively distortable sleeve, and disposing around said relatively distortable sleeve a relatively substantially rigid sleeve comprising a one piece, relatively short cylinder having an inside taper such that said relatively substantially rigid sleeve distorts said relatively distortable sleeve whereby said pair and said relatively distortable sleeve are squeezed together at said junction.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-06-02 | 1978-12-02 | 1979-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-02 | 1982-12-02 | 1983-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-02 | 1986-12-02 | 1987-06-03 | $7700.00 | Window Closed / Lapsed |