Patent US3580461A successfully refreshed from Google Patents.
US3580461A
Expired / Lapsed
US
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Method and apparatus for making elongated vessels, containers and tubular members
Assignee: Caribbean Holdings Ltd
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Filing: 1968-06-06
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Granted: 1971-05-25
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Expires: 1988-06-06
Abstract
Abstract Method and apparatus for forming elongated hollow pressureresistant cylindrical articles from a continuous strip of prestressed and pretensioned material wherein the strip of material is laid down in a plurality of helical windings which may overlap or abut each other by the application of a rotative force; the windings are sealably bonded as laid down; and the forming cylindrical article is displaced axially by a force separate from the rotative force to lay down the windings until the desired length of article is formed. The apparatus embodies fixed arcuate segments or rotatable cylindrical forming heads to shape the cylindrical articles from the strip; driven endless belt assemblies to rotate the forming article; and mechanical drives synchronized with the driven belt to axially move the forming article or pressurized fluid supplied interiorly of the forming article to axially displace the forming article under a controlled advance by mechanical linkages synchronized with the driven belt assembly.
Inventors
- 👤 Curzon Dobell
- 👤 Leslie P Wilson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:36
CPC Classifications
B; B21; B21C; B21C37/00; B21C37/06; B21C37/12; B21C37/15; B21C37/154; B21D; B21D51/00; B21D51/16; B21D51/24
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
118 words
A method of forming elongated, hollow pressure resistant cylindrical articles from a continuous prestressed and pretensioned material having a strip or ribbonlike cross section, comprising laying down successive windings of said material along a helical path in a cylinder forming zone to form a cylinder of desired diameter by the application to said windings in said zone of a force for rotation around the axis of said forming cylinder, bonding together the contiguous surfaces of each two successive windings and simultaneously applying to said forming cylinder a separate force for axial movement of said forming cylinder away from said forming zone, the force for said rotational movement and the force for said axial movement having a predetermined relationship.
Claim 2
Independent Claim
118 words
A method of forming elongated, hollow pressure resistant cylindrical articles from a continuous prestressed and pretensioned material having a strip or ribbonlike cross section, comprising laying down successive windings of said material along a helical path in a cylinder forming zone to form a cylinder of desired diameter by the application to said windings in said zone of a force for rotation around the axis of said forming cylinder, bonding together the contiguous surfaces of each two successive windings and simultaneously applying to said forming cylinder a separate force for axial movement of said forming cylinder away from said forming zone, the force for said rotational movement and the force for said axial movement having a predetermined relationship.
Claim 3
Dependent Claim
47 words
The method as defined in claim 1 wherein said force for rotation comprises friction peripherally appLied to said windings in said zone along a fixed diametral plane and said separate force for axial movement comprises a mechanical force applied to the axial periphery of said forming cylinder.
Claim 4
Dependent Claim
77 words
The method as defined in claim 1 wherein said force of rotation comprises friction peripherally applied to said windings in said zone along a fixed diametral plane and said separate force for axial movement comprises application of a pressurized fluid internally of said forming cylinder along the axis thereof and application of mechanical forces to the axial periphery of said forming cylinder to control the rate of axial movement of said forming cylinder by said pressurized medium.
Claim 5
Dependent Claim
35 words
The method as defined in claim 1 wherein said separate force for axial movement advances said forming cylinder at a rate corresponding to the rate at which said rotative force lays down said successive windings.
Claim 6
Dependent Claim
16 words
The method as defined in claim 1 wherein said windings are laid down in overlapping relationships.
Claim 7
Dependent Claim
16 words
The method as defined in claim 1 wherein said windings are laid down in abutting relationships.
Claim 8
Dependent Claim
151 words
Apparatus for forming elongated, hollow, pressure-resistant cylindrical articles from a source of a continuous, prestressed and pretensioned material having a strip or ribbonlike cross section comprising means to forward said material from said source to a rotatable cylinder forming means having at least one axially movable cylinder forming element, said material being delivered to said forming means along a path forming an acute angle between said source and the axis of the article to be formed, means to rotate said cylindrical forming means at a predetermined speed to continuously lay down winds of said material in a helical path to form said article, means to sealably bond said winds to each other and separate means to move said forming element axially away from said cylinder forming means as the winds are laid down at a speed forming a predetermined ratio with the speed of said means to rotate said forming element.
Claim 9
Dependent Claim
151 words
Apparatus for forming elongated, hollow, pressure-resistant cylindrical articles from a source of a continuous, prestressed and pretensioned material having a strip or ribbonlike cross section comprising means to forward said material from said source to a rotatable cylinder forming means having at least one axially movable cylinder forming element, said material being delivered to said forming means along a path forming an acute angle between said source and the axis of the article to be formed, means to rotate said cylindrical forming means at a predetermined speed to continuously lay down winds of said material in a helical path to form said article, means to sealably bond said winds to each other and separate means to move said forming element axially away from said cylinder forming means as the winds are laid down at a speed forming a predetermined ratio with the speed of said means to rotate said forming element.
Claim 10
Dependent Claim
100 words
The apparatus of claim 7 wherein said cylinder forming means comprises a pair of immovable spaced, arcuate segments having the radius of the article to be formed, and said axially movable cylinder forming element comprises a cylindrical false skirt member mounted on a rotatable, diametrally positioned plate the lower periphery of which engages a first plurality of circumferentially spaced rollers whose axes are parallel to the axis of the article and a second plurality of spaced rollers whose axes are perpendicular to the axis of the article, said first and second plurality of rollers being supported by a movable carriage.
Claim 11
Dependent Claim
25 words
The apparatus of claim 7 wherein said material forwarding means delivers said material to said forming means to lay down said winds in overlapping relationship.
Claim 12
Dependent Claim
25 words
The apparatus of claim 7 wherein said material forwarding means delivers said material to said forming means to lay down said winds in abutting relationship.
Claim 13
Dependent Claim
78 words
The apparatus of claim 7 wherein said means to rotate said forming element comprises a driven belt assembly positioned adjacent said forming means and perpendicular to the axis of the article being formed, said assembly comprising idler rolls radially positioned on each side of said axis, drive rolls diametrally positioned on each side of said axis, an endless belt engaging said idler and drive rolls and said windings as laid down and means to drive said drive rollers.
Claim 14
Dependent Claim
65 words
The apparatus of claim 8 wherein said movable carriage is provided with wheels, said wheels being supported on a pair of spaced rails having a longitudinal axis parallel to the axis of the article to be formed, said wheels further being driven by a motor to move said carriage with said rotatable false skirt thereon axially away from said arcuate segments at said predetermined speed.
Claim 15
Dependent Claim
119 words
The apparatus of claim 7 wherein said cylinder forming means comprises a hollow, rotatable, nonaxially movable forming head and said forming element comprises a hollow false skirt member adapted to removably mate with said forming head to form and maintain interior-wise an air tight relationship, said means to rotate said forming head comprises a driven endless belt assembly moving in the diametral plane of the forming article and said separate means for axial movement of said skirt comprises means to continuously supply a pressurized fluid to the interior of said head and skirt member in an axial direction and means operatively connected to the axial periphery of said forming cylinder to control the axial movement at said predetermined ratio.
Claim 16
Dependent Claim
35 words
The apparatus of claim 13 wherein said axial movement control means comprises chain members connected to the false skirt member and driven by pinion gears connected by a shaft to said driven endless belt assembly.
Claim 17
Dependent Claim
35 words
The apparatus of claim 13 wherein said forming head is provided with a plurality of V-slots circumferentially spaced therearound and an elastomeric cup-shaped cylindrical sealing member is disposed within said head and covering said V-slots.
Claim 18
Dependent Claim
15 words
The apparatus of claim 13 including roller means supporting the periphery of the forming cylinder.
Claim 19
Dependent Claim
87 words
The apparatus of claim 13 wherein said cylinder forming means comprises a cup-shaped end closure member, said member being rotatably mounted and restrained from axial movement, said forming element comprising a second cup-shaped end closure member positioned to face the first cup-shaped member and said axial movement control means comprises a freewheeling spider rotating in a bearing on the outer side of said second cup member, a plurality of cables connected to said spider and to at least one winch operatively synchronized with said driven belt assembly.
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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) | 1974-05-24 | 1974-11-23 | 1975-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-24 | 1978-11-23 | 1979-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-24 | 1982-11-23 | 1983-05-25 | $7700.00 | Window Closed / Lapsed |