US3780556A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tube corrugating apparatus and method
Assignee: Commscope Technologies LLC
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Filing: 1971-09-27
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Granted: 1973-12-25
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Expires: 1991-09-27
Abstract
Abstract To form an annularly corrugated tube, an uncorrugated tube is driven in the direction of its longitudinal axis while a toothed corrugating tool mounted for free rotation on a transverse axis is circularly orbited about the tube with successive teeth of the corrugating tool pressing into the surface of the tube to form spaced annular grooves. As the tube moves forwardly each successive groove engages and advances the tooth of the corrugating tool which is employed in its formation, thus commencing the formation of a succeeding groove by a succeeding tooth.
Inventors
- 👤 E Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 02:18
CPC Classifications
B; B21; B21D; B21D15/00; B21D15/04; B21D15/06
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
175 words
The method of corrugating thin-wall high-frequency radiation transmission tubing having a foam-dielectric core which comprises successively clamping spaced portions of the tubing, continuously advancing the clamped portions of the tubing in the direction of its longitudinal axis and forming successive spaced annular grooves by inward and forward motion of successive discrete protruding elements on a wheel mounted on a transverse axis while rotating the wheel about the tube, each grooving element being moved forwardly and inwardly against the tube to commence its groove substantially solely in response to the reaching of a point in the forward motion of at least one predecessor grooving element produced by the forward motion of the tube and being thereupon moved forward by engagement in the groove thus initiated to initiate the inward and forward motion of a successor grooving element, whereby corrugation form and spacing are essentially independent of slippage of the clamping, each of said grooving elements reaching in excess of 50 pErcent of its maximum penetration when its predecessor element is at the point of maximum penetration.
Claim 2
Independent Claim
175 words
The method of corrugating thin-wall high-frequency radiation transmission tubing having a foam-dielectric core which comprises successively clamping spaced portions of the tubing, continuously advancing the clamped portions of the tubing in the direction of its longitudinal axis and forming successive spaced annular grooves by inward and forward motion of successive discrete protruding elements on a wheel mounted on a transverse axis while rotating the wheel about the tube, each grooving element being moved forwardly and inwardly against the tube to commence its groove substantially solely in response to the reaching of a point in the forward motion of at least one predecessor grooving element produced by the forward motion of the tube and being thereupon moved forward by engagement in the groove thus initiated to initiate the inward and forward motion of a successor grooving element, whereby corrugation form and spacing are essentially independent of slippage of the clamping, each of said grooving elements reaching in excess of 50 pErcent of its maximum penetration when its predecessor element is at the point of maximum penetration.
Claim 3
Dependent Claim
146 words
In a tool for annular corrugation of tubing comprising a guide having a circular passage adapted to pass a tube to be corrugated, at least one endless series of corrugating members coupled together and mounted on the guide for endless repetitive cycling by the forward motion of the tube through a longitudinal region of penetration into and withdrawal from the passage, said corrugating members being laterally offset from the center of said passage in the direction of the axis of the cycling movement of said members, and means for rotating the guide about the tube, the improvement wherein the cross-section of the passage in the guide at said longitudinal region has arcuate segments adjacent to the corrugating members, of radius no greater than that of any other longitudinal portion of the passage and confining the tube to circular shape and fixed transverse position in said region.
Claim 4
Dependent Claim
146 words
In a tool for annular corrugation of tubing comprising a guide having a circular passage adapted to pass a tube to be corrugated, at least one endless series of corrugating members coupled together and mounted on the guide for endless repetitive cycling by the forward motion of the tube through a longitudinal region of penetration into and withdrawal from the passage, said corrugating members being laterally offset from the center of said passage in the direction of the axis of the cycling movement of said members, and means for rotating the guide about the tube, the improvement wherein the cross-section of the passage in the guide at said longitudinal region has arcuate segments adjacent to the corrugating members, of radius no greater than that of any other longitudinal portion of the passage and confining the tube to circular shape and fixed transverse position in said region.
Claim 5
Dependent Claim
25 words
The corrugating tool of claim 2 having a plurality of circumferentially spaced laterally offset series 0f corrugating members having such arcuate segments between each series.
Claim 6
Dependent Claim
125 words
In a tool for annular corrugation of tubing comprising a guide having a circular passage adapted to pass a tube to be corrugated, at least one endless series of corrugating members coupled together and mounted on the guide for endless repetitive cycling by the forward motion of the tube through a longitudinal region of penetration into and withdrawal from the passage, said corrugating members having straight inner edges and means for rotating the guide about the tube, the cross-section of the passage in the guide at said longitudinal region having arcuate segments adjacent to the corrugating members, of radius no greater than that of any other longitudinal portion of the passage and confining the tube to circular shape and fixed transverse position in said region.
Claim 7
Dependent Claim
125 words
In a tool for annular corrugation of tubing comprising a guide having a circular passage adapted to pass a tube to be corrugated, at least one endless series of corrugating members coupled together and mounted on the guide for endless repetitive cycling by the forward motion of the tube through a longitudinal region of penetration into and withdrawal from the passage, said corrugating members having straight inner edges and means for rotating the guide about the tube, the cross-section of the passage in the guide at said longitudinal region having arcuate segments adjacent to the corrugating members, of radius no greater than that of any other longitudinal portion of the passage and confining the tube to circular shape and fixed transverse position in said region.
Claim 8
Dependent Claim
21 words
The corrugating tool of claim 2 wherein the portions of the corrugating members which engage the tube are circular in cross-section.
Claim 9
Dependent Claim
112 words
In a tool for annular corrugation of tubing comprising a guide having a circular passage adapted to pass a tube to be corrugated, at least one endless series of corrugating members coupled together and mounted on the guide for endless repetitive cycling by the forward motion of the tube through a longitudinal region of penetration into and withdrawal from the passage, and means for rotating the guide about the tube so as to orbit the corrugating members about the tube, the improvement wherein the corrugating members have straight inner edges. 7. The corrugating tool of claim 6 wherein the portions of the corrugating members which engage the tube are circular in cross-section.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-12-24 | 1977-06-25 | 1977-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-24 | 1981-06-25 | 1981-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-24 | 1985-06-25 | 1985-12-25 | $7700.00 | Window Closed / Lapsed |