US3822074A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Releasable coupling for tubular members and method for assemblying said coupling
Assignee: Individual
•
Filing: 1973-01-16
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Granted: 1974-07-02
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Expires: 1993-01-16
Abstract
Abstract The present releasable coupling for tubular members includes a female bushing with a bore therethrough and with one or more holes extending through the bushing intermediate its ends, in such a position that the longitudinal axis of the hole extends substantially tangentially and preferably also at right angles to the bore whereby the hole extends partially into the bore. One or two tubular members are inserted as the male element or elements into said bore and a locking pin is then inserted into the respective hole. The locking pin has a conical tip so that the wall of the respective male element is gradually forced inwardly to provide a tight connection. Preferably, the inner end of the male element rests against an inner shoulder in the bore of the bushing.
Inventors
- 👤 F Welcker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:33
CPC Classifications
F; F16; F16L; F16L37/00; F16L37/08; F16L37/12; F16L37/14; F16L37/142; F16L37/146; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49947; Y10T29/49948; Y10T29/4995
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
157 words
A releasable coupling for tubular members comprising a bushing having a longitudinal axis and a longitudinal bore therethrough for inserting an end of a tubular member, stop means located in said bushing, a cross hole through said bushing, said cross hole extending partially into the space of said longitudinal bore, said cross hole having a respective longitudinal axis which extends substantially tangentially relative to the wall of said longitudinal bore in the bushing and at an angle relative to a generatrix of the wall of said longitudinal bore of the bushing whereby said longitudinal axis of the cross hole is slanting toward said stop means, and a locking pin inserted into said cross hole, said locking pin wedging said end of said tubular member in the direction of said longitudinal axis of the bushing to press said end axially against said stop means, said locking pin deforming said tubular member in the range of said cross hole.
Claim 2
Dependent Claim
157 words
A releasable coupling for tubular members comprising a bushing having a longitudinal axis and a longitudinal bore therethrough for inserting an end of a tubular member, stop means located in said bushing, a cross hole through said bushing, said cross hole extending partially into the space of said longitudinal bore, said cross hole having a respective longitudinal axis which extends substantially tangentially relative to the wall of said longitudinal bore in the bushing and at an angle relative to a generatrix of the wall of said longitudinal bore of the bushing whereby said longitudinal axis of the cross hole is slanting toward said stop means, and a locking pin inserted into said cross hole, said locking pin wedging said end of said tubular member in the direction of said longitudinal axis of the bushing to press said end axially against said stop means, said locking pin deforming said tubular member in the range of said cross hole.
Claim 3
Dependent Claim
26 words
The coupling according to claim 1, wherein a sealing means is located in said bushing between said stop means and said end of the tubular member.
Claim 4
Dependent Claim
44 words
The coupling according to claim 1, wherein said cross hole and said locking pin each comprise a respective thread, said locking pin having a conical tip at one end thereof and means for applying a tool to the other end of the locking pin.
Claim 5
Dependent Claim
24 words
The coupling according to claim 1, wherein said stop means comprise an end of a second tubular member inserted and secured in said bushing.
Claim 6
Independent Claim
154 words
A method for assemblying a coupling for tubular members including a bushing with a longitudinal bore therethrough, with an internal shoulder in said bore and with a slanted cross hole extending through the bushing and partially into the longitudinal bore, comprising providing the end of the tubular member to be inserted into said longitudinal bore, with a plane, smooth cut extending perpendicularly to the longitudinal axis of the tubular member, inserting said end of the tubular member into said longitudinal bore with a sufficient axially directed force so that said end rests firmly against said internal shoulder, locking said axially directed force by wedging a locking pin into said slanted cross hole, said wedging providing an axially directed force component for said locking and a further force component for deforming the wall portion of said tubular member in the range of the cross hole, said axially dIrected force component being directed toward said shoulder.
Claim 7
Independent Claim
154 words
A method for assemblying a coupling for tubular members including a bushing with a longitudinal bore therethrough, with an internal shoulder in said bore and with a slanted cross hole extending through the bushing and partially into the longitudinal bore, comprising providing the end of the tubular member to be inserted into said longitudinal bore, with a plane, smooth cut extending perpendicularly to the longitudinal axis of the tubular member, inserting said end of the tubular member into said longitudinal bore with a sufficient axially directed force so that said end rests firmly against said internal shoulder, locking said axially directed force by wedging a locking pin into said slanted cross hole, said wedging providing an axially directed force component for said locking and a further force component for deforming the wall portion of said tubular member in the range of the cross hole, said axially dIrected force component being directed toward said shoulder.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-07-01 | 1977-12-31 | 1978-07-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-07-01 | 1981-12-31 | 1982-07-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-07-01 | 1985-12-31 | 1986-07-02 | $7700.00 | Window Closed / Lapsed |