US3695084A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nestable container and apparatus for and method of making same
Assignee: Reynolds Metals Co
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Filing: 1970-11-24
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Granted: 1972-10-03
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Expires: 1990-11-24
Abstract
Abstract A nestable container and an improved apparatus for and method of making same are provided wherein a blank is drawn to define a drawn container which is reverse redrawn to form the nestable container which has a side wall and an annular planar flange extending therefrom with a toroidal bead extending from the flange and having at least a portion thereof arranged within and beneath the peripheral edge of the flange. The container is adapted to be nested in a substantially identical container so that the toroidal bead separates the flange from the flange of a substantially identical container when the container is nested in the substantially identical container.
Inventors
- 👤 Frederik A Siemonsen
- 👤 Robert F Bublitz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 04:23
CPC Classifications
B; B65; B65D; B65D1/00; B65D1/22; B65D1/26; B21; B21D; B21D51/00; B21D51/02; B21D51/10; B65D21/00; B65D21/02; B31; B31B; B31B50/00; B31B50/59; B31B50/592
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
145 words
An apparatus for making a nestable container from a blank comprising, a first die member having an inside and an outside forming surface, a second die member, said members being supported for relative movement toward and away from each other, said second die member cooperating with said outside surface to form a drawn container from said blank, a punch, said punch and first die member being supported for relative movement toward and away from each other, said punch cooperating with said inside surface to form a reverse redrawn container by redrawing said drawn container while keeping a tubular wall portion of the drawn container outwardly of said outside forming surface, and a curling ring supported concentrically around said first die member, said curling ring having a portion which is adapted to engage said tubular wall portion to define a reverse bead having a toroidal configuration.
Claim 2
Independent Claim
145 words
An apparatus for making a nestable container from a blank comprising, a first die member having an inside and an outside forming surface, a second die member, said members being supported for relative movement toward and away from each other, said second die member cooperating with said outside surface to form a drawn container from said blank, a punch, said punch and first die member being supported for relative movement toward and away from each other, said punch cooperating with said inside surface to form a reverse redrawn container by redrawing said drawn container while keeping a tubular wall portion of the drawn container outwardly of said outside forming surface, and a curling ring supported concentrically around said first die member, said curling ring having a portion which is adapted to engage said tubular wall portion to define a reverse bead having a toroidal configuration.
Claim 3
Dependent Claim
107 words
An apparatus as set forth in claim 1 in which said first die member also has an outer annular clamping surface and said apparatus further comprising a holder having an annular holding surface which cooperates with said clamping surface to define an annular forming passage through which a portion of said drawn container is drawn to define said redrawn container having a bottom wall adjoined by a side wall, said holding and clamping surfaces also cooperating to define a planar annular flange extending from the side wall of the redrawn container with said flange having said tubular wall portion extending to one side of the plane thereof.
Claim 4
Dependent Claim
40 words
An apparatus as set forth in claim 1 and further comprising a plurality of pressure pins engaging said curling ring, said pins operating to urge said portion of said curling ring against said tubular wall to form said toroidal bead.
Claim 5
Dependent Claim
81 words
An apparatus as set forth in claim 1 in which said inside forming surface of said first die member comprises a concave frustoconical forming surface, said outside forming surface comprises a cylindrical forming surface, said punch has a convex frustoconical forming surface which cooperates with said concave forming surface, and each of said forming surfaces cooperates with its associated forming surface to form said drawn container having a cylindrical side wall and said redrawn container having a substantially frustoconical side wall.
Claim 6
Dependent Claim
24 words
An apparatus as set forth in claim 1 in which said portion comprises a concave curling surface adjacent an inside surface of said ring.
Claim 7
Dependent Claim
41 words
An apparatus as set forth in claim 5 in which said portion further comprises a wedge-like edge adjoining said concave curling surface at one end and a vertically extending cylindrical surface portion adjoining the opposite end of said concave curling surface.
Claim 8
Dependent Claim
47 words
An apparatus as set forth in claim 2 in which said punch and first die member are relatively moved toward each other to define said redrawn container simultaneously with the relative movement of the first and second die members toward each other to define said drawn container.
Claim 9
Dependent Claim
59 words
An apparatus as set forth in claim 1 in which said second die member also serves as a blanking punch and further comprising a blanking ring supported concentrically around said first die member, said blanking punch and blanking ring having cooperating cutting edges which are adapted to engage a strip of sheet metal disposed therebetween to define said blank.
Claim 10
Dependent Claim
26 words
An apparatus as set forth in claim 8 in which said cutting edges comprise cooperating circular edges which define a blank having a circular peripheral outline.
Claim 11
Independent Claim
101 words
A method of making a nestable container from a blank comprising the steps of, drawing a blank between an outside forming surface of a first die member and a second die member to define a drawn container, reverse redrawing said drawn container between an inside forming surface of said first die member and a punch while keeping a tubular wall portion of the drawn container outwardly of said outside forming surface, and forming said tubular wall portion with a portion of a curling ring arranged concentrically around said first die member to define a reverse bead therein having a torOidal configuration.
Claim 12
Independent Claim
101 words
A method of making a nestable container from a blank comprising the steps of, drawing a blank between an outside forming surface of a first die member and a second die member to define a drawn container, reverse redrawing said drawn container between an inside forming surface of said first die member and a punch while keeping a tubular wall portion of the drawn container outwardly of said outside forming surface, and forming said tubular wall portion with a portion of a curling ring arranged concentrically around said first die member to define a reverse bead therein having a torOidal configuration.
Claim 13
Dependent Claim
131 words
A method as set forth in claim 10 in which said first die member also has an outer annular clamping surface and said method comprising the further step of holding an annular portion of a bottom wall comprising said drawn container between an annular holding surface of a holder and said clamping surface to define an annular forming passage through which a portion of said drawn container is drawn during said redrawing step to define said redrawn container having a bottom wall adjoined by a side wall, said holding and clamping surfaces also cooperating during said holding step to define an annular flange extending from an edge of the side wall of the redrawn container with said tubular wall portion extending to one side of the plane of said annular flange.
Claim 14
Dependent Claim
23 words
A method as set forth in claim 10 in which said reverse redrawing step is commenced prior to completion of said drawing step.
Claim 15
Dependent Claim
35 words
A method as set forth in claim 10 in which said forming step is achieved after completion of said reverse redrawing step and during return of said die members and punch to their starting positions.
Claim 16
Dependent Claim
24 words
A method as set forth in claim 10 in which said drawing step comprises drawing a blank of metallic foil which has been hardened.
Claim 17
Dependent Claim
46 words
A method as set forth in claim 10 and comprising the step of shearing said blank from a web of metal foil interposed between said die members by relatively moving said second die member toward an associated blanking die supported concentrically around said first die member.
Claim 18
Dependent Claim
39 words
A method as set forth in claim 11 in which during said forming step, said bead is formed adjacent the bottom surface of said annular flange by a distance which is less than the cross-sectional radius of said bead.
Claim 19
Dependent Claim
41 words
A method as set forth in claim 11 in which during said forming step said bead is formed beneath the plane of said annular flange and has at least a portion thereof arranged within the outer peripheral edge of said flange.
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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) | 1975-10-03 | 1976-04-03 | 1976-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-03 | 1980-04-03 | 1980-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-03 | 1984-04-03 | 1984-10-03 | $7700.00 | Window Closed / Lapsed |