US3656331A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for producing annular corrugated tubing
Assignee: KM Kabelmetal AG
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Filing: 1970-03-26
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Granted: 1972-04-18
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Expires: 1990-03-26
Abstract
Abstract Apparatus for continuously forming annular corrugations in moving tubing including a rotatable housing, a die holder adjustably mounted in the housing, and a die mounted in the die holder, wherein the die comprises a ring-shaped member with a helical forming rib on the inner edge thereof.
Inventors
- 👤 Hubert Kuypers
- 👤 Friedrich Schatz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:44
CPC Classifications
B; B21; B21D; B21D15/00; B21D15/04
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
126 words
Apparatus for continuously forming annular corrugations in tubing, comprising a rotatable cylindrical housing for passing said tubing therethrough; annular die holder means rotatably mounted within said housing, corrugating die means mounted within said holder means, said die means comprising a flat annular body with a helical corrugating rib on the inner edge thereof having a selected pitch angle, means for adjustably mounting said holder on said housing in selected tilted positions, wherein (1) the die means is disposed in a plane related to a plane extending transversely of the longitudinal axis of the housing by an angular displacement equal to the pitch angle of the helical rib, and (2) the central axis of the die holder being offset relative to the longitudinal axis of the housing.
Claim 2
Dependent Claim
126 words
Apparatus for continuously forming annular corrugations in tubing, comprising a rotatable cylindrical housing for passing said tubing therethrough; annular die holder means rotatably mounted within said housing, corrugating die means mounted within said holder means, said die means comprising a flat annular body with a helical corrugating rib on the inner edge thereof having a selected pitch angle, means for adjustably mounting said holder on said housing in selected tilted positions, wherein (1) the die means is disposed in a plane related to a plane extending transversely of the longitudinal axis of the housing by an angular displacement equal to the pitch angle of the helical rib, and (2) the central axis of the die holder being offset relative to the longitudinal axis of the housing.
Claim 3
Dependent Claim
40 words
Apparatus as in claim 1 wherein said holder includes oppositely disposed journal means for mounting said holder within said housing, the axis of the medial transverse plane of the die means being coincident with the axis of said journal means.
Claim 4
Dependent Claim
20 words
Apparatus as in claim 2 and further including means for angularly displacing said holder means about the journal axis thereof.
Claim 5
Dependent Claim
20 words
Apparatus as in claim 2 and further including means for shifting said holder means longitudinally along the journal axis thereof.
Claim 6
Dependent Claim
55 words
Apparatus as in claim 1 wherein said holder means comprises a pair of concentric relatively rotatable annular members, means for mounting the die means on the innermost of said pair of members, means for mounting the outer member of said pair of members on said housing, for selective angular displacement and axial movement relative thereto.
Claim 7
Dependent Claim
30 words
Apparatus as in claim 5 and further including bearing means between said pair of concentric members for allowing the die means to rotate independently of the rotation of said housing.
Claim 8
Dependent Claim
38 words
Apparatus as in claim 1, further including means for moving the tubing through the housing, means for rotating said housing, and means for proportionately relating the rotational movement of the housing to the longitudinal movement of the tubing.
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) | 1975-04-18 | 1975-10-18 | 1976-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-04-18 | 1979-10-18 | 1980-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-04-18 | 1983-10-18 | 1984-04-18 | $7700.00 | Window Closed / Lapsed |