US3765351A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for beading, necking-in and flanging metal can bodies
Assignee: Primerica Inc
•
Filing: 1971-04-09
•
Granted: 1973-10-16
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Expires: 1991-04-09
Abstract
Abstract A method and apparatus for reducing the circumference of a portion of a metal can body to form a necked-in (and/or beaded) feature and for producing a flange feature on one side of the can body portion wherein the can body is rotated by a mandrel about its own axis which is offset from the mandrel axis, both sides of the can body portion are restrained from undergoing movement relative to the mandrel by bringing clamping pressure to bear against said both sides by means of rotatable clamping rolls, the can body portion, being circumferentially aligned with a circumferentially undercut section of the mandrel, is reduced in circumference by moving a rotatable beading roll inwardly toward the axis of the mandrel and against the can body portion, after a predetermined initial reduction in the circumference of the can body portion, the side of the can body on which the flange feature is to be produced is freed from its restraint by removing the clamping pressure imposed by its respective clamping roll, and, finally, as the can body portion is further reduced in circumference by continuing the movement of the rotatable beading roll inwardly against the can body portion, the free, unrestrained side of the can body portion is drawn between predetermined radiused surfaces on the mandrel and the beading roll which causes the marginal edge of that side of the can body portion to pivot and swing outwardly beyond the original circumference of the can body to produce a flange feature on the end of the can body.
Inventors
- 👤 E Kubacki
- 👤 W Timmins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 03:19
CPC Classifications
B; B21; B21D; B21D51/00; B21D51/16; B21D51/26; B21D51/2615; B21D51/2638
Claims Analysis
Total Claims: 32
Claim 1
Independent Claim
74 words
A method of forming a necked-in feature on a metal can body, comprising the steps of: restraining the can body on both sides on a circumferential portion of said can body; and reducing the circumference of said portion of said can body, said restraining of said can body on both sides of said circumferential portion of said can body permitting longitudenal stretching of the material of said can body only in said circumferential portion.
Claim 2
Independent Claim
74 words
A method of forming a necked-in feature on a metal can body, comprising the steps of: restraining the can body on both sides on a circumferential portion of said can body; and reducing the circumference of said portion of said can body, said restraining of said can body on both sides of said circumferential portion of said can body permitting longitudenal stretching of the material of said can body only in said circumferential portion.
Claim 3
Independent Claim
87 words
A method of reducing the circumference of a circumferential portion of a metal can body, comprising the steps of: restraining the can body on both sides of the circumferential portion of said can body; and establishing a perferential biaxial stress condition in the circumferential portion which effectuates circumferential compression and longitudinal elongation of said Portion, said restraining of said can body on both sides of said circumferential portion of said can body permitting longitudinal stretching of the material of said can body only in said circumferential portion.
Claim 4
Independent Claim
87 words
A method of reducing the circumference of a circumferential portion of a metal can body, comprising the steps of: restraining the can body on both sides of the circumferential portion of said can body; and establishing a perferential biaxial stress condition in the circumferential portion which effectuates circumferential compression and longitudinal elongation of said Portion, said restraining of said can body on both sides of said circumferential portion of said can body permitting longitudinal stretching of the material of said can body only in said circumferential portion.
Claim 5
Independent Claim
95 words
A method of reducing the circumference of a circumferential portion of a metal can body, comprising the steps of: rotating the can body about its longitudinal axis; restraining the can body on both sides of the circumferential portion of said can body; and establishing a preferential biaxial stress condition in the circumferential portion which effectuates circumferential compression and longitudinal elongation of said portion, said restraining of said can body on both sides of said circumferential portion of said can body permitting longitudinal stretching of the material of said can body only in said circumferential portion.
Claim 6
Independent Claim
95 words
A method of reducing the circumference of a circumferential portion of a metal can body, comprising the steps of: rotating the can body about its longitudinal axis; restraining the can body on both sides of the circumferential portion of said can body; and establishing a preferential biaxial stress condition in the circumferential portion which effectuates circumferential compression and longitudinal elongation of said portion, said restraining of said can body on both sides of said circumferential portion of said can body permitting longitudinal stretching of the material of said can body only in said circumferential portion.
Claim 7
Independent Claim
86 words
A method of reducing the circumference of a circumferential portion of a metal can body, comprising the steps of: restraining the can body on both sides of the circumferential portion of said can body; establishing a preferential biaxial stress condition in the circumferential portion which effectuates circumferential compression and longitudinal elongation of said portion; removing the restraint on one side of the circumferential portion of said can body; and establishing a uniaxial stress condition in the circumferential portion which effectuates further circumferential compression of said portion.
Claim 8
Independent Claim
86 words
A method of reducing the circumference of a circumferential portion of a metal can body, comprising the steps of: restraining the can body on both sides of the circumferential portion of said can body; establishing a preferential biaxial stress condition in the circumferential portion which effectuates circumferential compression and longitudinal elongation of said portion; removing the restraint on one side of the circumferential portion of said can body; and establishing a uniaxial stress condition in the circumferential portion which effectuates further circumferential compression of said portion.
Claim 9
Independent Claim
94 words
A method of reducing the circumference of a circumferential portion of a metal can body, comprising the steps of: rotating the can body about its longitudinal axis; restraining the can body on both sides of the circumferential portion of said can body; establishing a preferential biaxial stress condition in the circumferential portion which effectuates circumferential compression and longitudinal elongation of said portion; removing the restraint on one side of the circumferential portion of said can body; and establishing a uniaxial stress condition in the circumferential portion which effectuated further circumferential compression of said portion.
Claim 10
Independent Claim
94 words
A method of reducing the circumference of a circumferential portion of a metal can body, comprising the steps of: rotating the can body about its longitudinal axis; restraining the can body on both sides of the circumferential portion of said can body; establishing a preferential biaxial stress condition in the circumferential portion which effectuates circumferential compression and longitudinal elongation of said portion; removing the restraint on one side of the circumferential portion of said can body; and establishing a uniaxial stress condition in the circumferential portion which effectuated further circumferential compression of said portion.
Claim 11
Independent Claim
138 words
A method of reducing the circumference of a circumferential portion of a metal can body and producing a flange on one side of said portion, comprising the steps of: restraining the can body on both sides of the circumferential portion of said can body; establishing a preferential biaxial stress condition in the circumferential portion which effectuates circumferential compression and longitudinal elongation of said portion; removing the restraint on the side of the circumferential portion of said can body on which the flange is to be produced; establishing a uniaxial stress condition in the circumferential portion which effectuates further circumferential compression of said portion; and simultaneously drawing the free, unrestrained side of the circumferential portion of said can body so as to cause said side to pivot and swing outwardly to form a circumferential flange on said can body.
Claim 12
Independent Claim
138 words
A method of reducing the circumference of a circumferential portion of a metal can body and producing a flange on one side of said portion, comprising the steps of: restraining the can body on both sides of the circumferential portion of said can body; establishing a preferential biaxial stress condition in the circumferential portion which effectuates circumferential compression and longitudinal elongation of said portion; removing the restraint on the side of the circumferential portion of said can body on which the flange is to be produced; establishing a uniaxial stress condition in the circumferential portion which effectuates further circumferential compression of said portion; and simultaneously drawing the free, unrestrained side of the circumferential portion of said can body so as to cause said side to pivot and swing outwardly to form a circumferential flange on said can body.
Claim 13
Independent Claim
146 words
A method of reducing the circumference of a circumferential portion of a metal can body and producing a flange on one side of said portion, comprising the steps of: rotating the can body about its longitudinal axis; restraining the can body on both sides of the circumferential portion of said can body; establishing a preferential biaxial stress condition in the circumferential portion which effectuates circumferential compression and longitudinal elongation of said portion; removing the restraint on the side of the circumferential portion of said can body on which the flange is to be produced; establishing a uniaxial stress condition in the circumferential portion which effectuates further circumferential compression of said portion; and simultaneously drawing the free, unrestrained side of the circumferential portion of said can body so as to cause said side to pivot and sWing outwardly to form a circumferential flange on said can body.
Claim 14
Independent Claim
146 words
A method of reducing the circumference of a circumferential portion of a metal can body and producing a flange on one side of said portion, comprising the steps of: rotating the can body about its longitudinal axis; restraining the can body on both sides of the circumferential portion of said can body; establishing a preferential biaxial stress condition in the circumferential portion which effectuates circumferential compression and longitudinal elongation of said portion; removing the restraint on the side of the circumferential portion of said can body on which the flange is to be produced; establishing a uniaxial stress condition in the circumferential portion which effectuates further circumferential compression of said portion; and simultaneously drawing the free, unrestrained side of the circumferential portion of said can body so as to cause said side to pivot and sWing outwardly to form a circumferential flange on said can body.
Claim 15
Independent Claim
273 words
A method of reducing the circumference of a circumferential portion of a metal can body and producing a flange on one side of said portion, comprising the steps of: rotating a mandrel having a circumferential undercut section to cause rotation of the can body about its longitudinal axis which is offset from the mandrel axis; restraining the can body, from undergoing movement relative to the mandrel, on both sides of the circumferential portion of said can body by moving rotatable clamping rolls to respectively secure said both sides of said circumferential portion; establishing a preferential biaxial stress condition in the circumferential portion which effectuates circumferential compression and longitudinal elongation of said portion by moving a rotatable beading roll, aligned with the circumferential undercut section of said mandrel, inwardly toward the axis of said mandrel against said portion; relaxing the restraint on the side of the circumferential portion of said can body on which the flange is to be produced by removing the clamping roll which was securing that respective side of said portion; establishing a uniaxial stress condition in the circumferential portion which effectuates further circumferential compression of said body portion by moving the rotatable beading further inwardly toward the axis of said mandrel against said portion; and simultaneously drawing the free, unrestrained side of the circumferential portion of said can body between a side surface of said rotatable beading roll and a surface of said mandrel which defines one side of the circumferential undercut section of said mandrel so as to cause said side of the circumferential portion to pivot and swing outwardly to form a circumferential flange on said can body.
Claim 16
Independent Claim
273 words
A method of reducing the circumference of a circumferential portion of a metal can body and producing a flange on one side of said portion, comprising the steps of: rotating a mandrel having a circumferential undercut section to cause rotation of the can body about its longitudinal axis which is offset from the mandrel axis; restraining the can body, from undergoing movement relative to the mandrel, on both sides of the circumferential portion of said can body by moving rotatable clamping rolls to respectively secure said both sides of said circumferential portion; establishing a preferential biaxial stress condition in the circumferential portion which effectuates circumferential compression and longitudinal elongation of said portion by moving a rotatable beading roll, aligned with the circumferential undercut section of said mandrel, inwardly toward the axis of said mandrel against said portion; relaxing the restraint on the side of the circumferential portion of said can body on which the flange is to be produced by removing the clamping roll which was securing that respective side of said portion; establishing a uniaxial stress condition in the circumferential portion which effectuates further circumferential compression of said body portion by moving the rotatable beading further inwardly toward the axis of said mandrel against said portion; and simultaneously drawing the free, unrestrained side of the circumferential portion of said can body between a side surface of said rotatable beading roll and a surface of said mandrel which defines one side of the circumferential undercut section of said mandrel so as to cause said side of the circumferential portion to pivot and swing outwardly to form a circumferential flange on said can body.
Claim 17
Dependent Claim
62 words
Apparatus for forming a necked-in feature on a metal can body, comprising: means for restraining the can body on both sides of a circumferential portion of said can body; and means for reducing the circumference of said portion of said can body, so that said restraining means permits longitudinal stretching of the material of said can body only in said circumferential portion.
Claim 18
Dependent Claim
62 words
Apparatus for forming a necked-in feature on a metal can body, comprising: means for restraining the can body on both sides of a circumferential portion of said can body; and means for reducing the circumference of said portion of said can body, so that said restraining means permits longitudinal stretching of the material of said can body only in said circumferential portion.
Claim 19
Dependent Claim
75 words
Apparatus for reducing the circumference of a circumferential portion of a metal can body, comprising: means for restraining the can body on both sides of the circumferential portion of said can body; and means for establishing a perferential biaxial stress condition in the circumferential portion which effectuates circumferential compression and longitudinal elongation of said portion, so that said restraining means permits longitudinal stretching of the material of said can body only in said circumferential portion.
Claim 20
Dependent Claim
75 words
Apparatus for reducing the circumference of a circumferential portion of a metal can body, comprising: means for restraining the can body on both sides of the circumferential portion of said can body; and means for establishing a perferential biaxial stress condition in the circumferential portion which effectuates circumferential compression and longitudinal elongation of said portion, so that said restraining means permits longitudinal stretching of the material of said can body only in said circumferential portion.
Claim 21
Dependent Claim
84 words
Apparatus for reducing the circumference of a circumferential portion of a metal can body, comprising: means for rotating the can body about its longitudinal axis; means for restraining the can body on both sides of the circumferential portion of said can body; and means for establishing perferential biaxial stress condition in the circumferential portion which effectuates circumferential compression and longitudinal elongation of said portion, so that said restraining means permits longitudinal stretching of the material of said can body only in said circumferential portion.
Claim 22
Dependent Claim
84 words
Apparatus for reducing the circumference of a circumferential portion of a metal can body, comprising: means for rotating the can body about its longitudinal axis; means for restraining the can body on both sides of the circumferential portion of said can body; and means for establishing perferential biaxial stress condition in the circumferential portion which effectuates circumferential compression and longitudinal elongation of said portion, so that said restraining means permits longitudinal stretching of the material of said can body only in said circumferential portion.
Claim 23
Dependent Claim
111 words
Apparatus for reducing the circumference of a circumferential portion of a metal can body, comprising: means for restraining the can body on both sides of the circumferential portion of said can body; means for removing the restraint on one side of the circumferential portion of said can body; and means for establishing a preferential biaxial stress condition in the circumferential portion when both sides of said portion are restrained which effectuates circumferential compression and longitudinal elongation of said portion and for establishing a uniaxial stress condition in the circumferential pOrtion when the restraint on the one side of said portion has been removed which effectuates further circumferential compression of said portion.
Claim 24
Dependent Claim
111 words
Apparatus for reducing the circumference of a circumferential portion of a metal can body, comprising: means for restraining the can body on both sides of the circumferential portion of said can body; means for removing the restraint on one side of the circumferential portion of said can body; and means for establishing a preferential biaxial stress condition in the circumferential portion when both sides of said portion are restrained which effectuates circumferential compression and longitudinal elongation of said portion and for establishing a uniaxial stress condition in the circumferential pOrtion when the restraint on the one side of said portion has been removed which effectuates further circumferential compression of said portion.
Claim 25
Dependent Claim
121 words
Apparatus for reducing the circumference of a circumferential portion of a metal can body, comprising: means for rotating the can body about its longitudinal axis; means for restraining the can body on both sides of the circumferential portion of said can body; means for removing the restraint on one side of the circumferential portion of said can body; and means for establishing a preferential biaxial stress condition in the circumferential portion when both sides of said portion are restrained which effectuates circumferential compression and longitudinal elongation of said portion and for establishing a uniaxial stress condition in the circumferential portion when the restraint on the one side of said portion has been removed which effectuates further circumferential compression of said portion.
Claim 26
Dependent Claim
121 words
Apparatus for reducing the circumference of a circumferential portion of a metal can body, comprising: means for rotating the can body about its longitudinal axis; means for restraining the can body on both sides of the circumferential portion of said can body; means for removing the restraint on one side of the circumferential portion of said can body; and means for establishing a preferential biaxial stress condition in the circumferential portion when both sides of said portion are restrained which effectuates circumferential compression and longitudinal elongation of said portion and for establishing a uniaxial stress condition in the circumferential portion when the restraint on the one side of said portion has been removed which effectuates further circumferential compression of said portion.
Claim 27
Dependent Claim
175 words
Apparatus for reducing the circumference of a circumferential portion of a metal can body and producing a flange on one side of said portion, comprising: means for restraining the can body on both sides of the circumferential portion of said can body; means for removing the restraint on the side of the circumferential portion of said can body on which the flange is to be produced; means for establishing a preferential biaxial stress condition in the circumferential portion when both sides of said portion are restrained which effectuates circumferential compression and longitudinal elongation of said portion and for establishing a uniaxial stress condition in the circumferential portion when the restraint on said side of said portion has been removed which effectuates further circumferential compression of said portion; and means for drawing the free, unrestrained side of the circumferential portion of said can body, simultaneously as said establishing means effectuates further circumferential compression of said portion, so as to cause said side to pivot and swing outwardly to form a circumferential flange on said can body.
Claim 28
Dependent Claim
175 words
Apparatus for reducing the circumference of a circumferential portion of a metal can body and producing a flange on one side of said portion, comprising: means for restraining the can body on both sides of the circumferential portion of said can body; means for removing the restraint on the side of the circumferential portion of said can body on which the flange is to be produced; means for establishing a preferential biaxial stress condition in the circumferential portion when both sides of said portion are restrained which effectuates circumferential compression and longitudinal elongation of said portion and for establishing a uniaxial stress condition in the circumferential portion when the restraint on said side of said portion has been removed which effectuates further circumferential compression of said portion; and means for drawing the free, unrestrained side of the circumferential portion of said can body, simultaneously as said establishing means effectuates further circumferential compression of said portion, so as to cause said side to pivot and swing outwardly to form a circumferential flange on said can body.
Claim 29
Dependent Claim
185 words
Apparatus for reducing the circumference of a circumferential portion of a metal can body and producing a flange on one side of said portion, comprising: means for rotating the can body about its longitudinal axis; means for restraining the can body on both sides of the circumferential portion of said can body; means for removing the restraint on the side of the circumferential portion of said can body on which the flange is to be produced; means for establishing a preferential biaxial stress condition in the circumferential portion when both sides of said portion are restrained which effectuates circumferential compression and longitudinal elongation of said portion and for establishing a uniaxial stress condition in the circumferential portion when the restraint on said side of said portion has been removed which effectuates further circumferential compression of said portion; and means for drawing the free, unrestrained side of the circumferential portion of said can body, simultaneously as said establishing means effectuates further circumferential compression of said portion, so as to cause said side to pivot and swing outwardly to form a circumferential flange on said can body.
Claim 30
Dependent Claim
185 words
Apparatus for reducing the circumference of a circumferential portion of a metal can body and producing a flange on one side of said portion, comprising: means for rotating the can body about its longitudinal axis; means for restraining the can body on both sides of the circumferential portion of said can body; means for removing the restraint on the side of the circumferential portion of said can body on which the flange is to be produced; means for establishing a preferential biaxial stress condition in the circumferential portion when both sides of said portion are restrained which effectuates circumferential compression and longitudinal elongation of said portion and for establishing a uniaxial stress condition in the circumferential portion when the restraint on said side of said portion has been removed which effectuates further circumferential compression of said portion; and means for drawing the free, unrestrained side of the circumferential portion of said can body, simultaneously as said establishing means effectuates further circumferential compression of said portion, so as to cause said side to pivot and swing outwardly to form a circumferential flange on said can body.
Claim 31
Dependent Claim
290 words
Apparatus for reducing the circumference of a circumferential portion of a metal can body and producing a flange on one side of said portion, comprising: a rotating mandrel, having a circumferential undercut section, for supporting the can body and causing rotation of said can body about its longitudinal axis which is offset from the mandrel axis; rotatable clamping means for restraining the can body on both sides of the circumferential portion of said can body to prevent said can body from undergoing movement relative ot said mandrel; actuating means for removing the restraint on the side of the circumferential portion of said can body on which the flange is to be produced which was applied thereto by said rotatable clamping means; a rotatable beading roll, aligned with the circumferential undercut section of said mandrel, movable along a path perpendicular to the axis of said mandrel and against said portion for establishing a preferential biaxial stress condition in the circumferential portion when both sides of said portion are restrained which effectuates circumferential compression and longitudinal elongation of said portion and for establishing a uniaxial stress condition in the circumferential portion when the restraint on said side of said portion has been removed which effectuates further circumferential compression of said portion; and said rotatable beading roll having a side surface facing a surface on said mandrel which defines one side of the circumferential undercut section of said mandrel, said respective surfaces providing a channel through which to draw the free, unrestrained side of the circumferential portion of said can body, simultaneously as said beading roll effectuates further circumferential compression of said portion, so as to cause said side to pivot and swing outwardly to form a circumferential flange on said can body.
Claim 32
Dependent Claim
290 words
Apparatus for reducing the circumference of a circumferential portion of a metal can body and producing a flange on one side of said portion, comprising: a rotating mandrel, having a circumferential undercut section, for supporting the can body and causing rotation of said can body about its longitudinal axis which is offset from the mandrel axis; rotatable clamping means for restraining the can body on both sides of the circumferential portion of said can body to prevent said can body from undergoing movement relative ot said mandrel; actuating means for removing the restraint on the side of the circumferential portion of said can body on which the flange is to be produced which was applied thereto by said rotatable clamping means; a rotatable beading roll, aligned with the circumferential undercut section of said mandrel, movable along a path perpendicular to the axis of said mandrel and against said portion for establishing a preferential biaxial stress condition in the circumferential portion when both sides of said portion are restrained which effectuates circumferential compression and longitudinal elongation of said portion and for establishing a uniaxial stress condition in the circumferential portion when the restraint on said side of said portion has been removed which effectuates further circumferential compression of said portion; and said rotatable beading roll having a side surface facing a surface on said mandrel which defines one side of the circumferential undercut section of said mandrel, said respective surfaces providing a channel through which to draw the free, unrestrained side of the circumferential portion of said can body, simultaneously as said beading roll effectuates further circumferential compression of said portion, so as to cause said side to pivot and swing outwardly to form a circumferential flange on said can body.
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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) | 1976-10-15 | 1977-04-16 | 1977-10-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-15 | 1981-04-16 | 1981-10-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-15 | 1985-04-16 | 1985-10-16 | $7700.00 | Window Closed / Lapsed |