US3687098A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Container necking mechanism and method
Assignee: ADOLPH COORS COMPANY A CO CORP
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Filing: 1971-03-19
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Granted: 1972-08-29
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Expires: 1991-03-19
Abstract
Abstract Container necking mechanism comprising a stationary necking die and reciprocatory punch and push plate members, each of said punch and push plate members being controlled by a rotated cam, said cams causing the punch or push plate member to exert pressure in one direction against the container at predetermined times during the cam rotations to move the container toward and from an annular space between the stationary die and punch member, and said cams having complemental working faces on parts of their peripheries which cooperate during part of the necking operation to move a container into necking position in the die by simultaneous movements of both punch and push plate members in the same direction whereby frictional resistance between the punch and the container is eliminated during movement of the container with the punch.
Inventors
- 👤 John Hardy Maytag
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 05:57
CPC Classifications
B; B21; B21D; B21D51/00; B21D51/16; B21D51/26; B21D51/2615; B21D51/2638; B21D41/00; B21D41/04; Y; Y10; Y10S; Y10S72/00; Y10S72/715
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
232 words
Container necking mechanism comprising a. a stationary necking die, b. a reciprocable punch movable in the die and separated from the die by an annular necking space, c. a reciprocable push plate spaced in axial direction from the punch, d. rotated supporting means supporting a container having an open end to be necked in axial alignment with the necking die, punch and push plate, e. a rotated push plate cam operatively connected to the push plate, said cam including means to actuate the push plate to contAct the container and move the container gradually toward the punch into necking contact with the punch and stationary die in the annular space between them and including means to withdraw the push plate from the container, and f. a rotated punch cam operatively connected to the punch, said cam including means to actuate the punch to space the punch from the open end of the container while the push plate moves the container gradually toward the punch, including means to actuate the punch to engage the container and to move in the same direction with the container while the push plate is pushing the container into said annular space, and including means for moving the punch and container out of the said space by actuating the punch to bear on the container necked end while the push plate is out of contact with the container.
Claim 2
Dependent Claim
232 words
Container necking mechanism comprising a. a stationary necking die, b. a reciprocable punch movable in the die and separated from the die by an annular necking space, c. a reciprocable push plate spaced in axial direction from the punch, d. rotated supporting means supporting a container having an open end to be necked in axial alignment with the necking die, punch and push plate, e. a rotated push plate cam operatively connected to the push plate, said cam including means to actuate the push plate to contAct the container and move the container gradually toward the punch into necking contact with the punch and stationary die in the annular space between them and including means to withdraw the push plate from the container, and f. a rotated punch cam operatively connected to the punch, said cam including means to actuate the punch to space the punch from the open end of the container while the push plate moves the container gradually toward the punch, including means to actuate the punch to engage the container and to move in the same direction with the container while the push plate is pushing the container into said annular space, and including means for moving the punch and container out of the said space by actuating the punch to bear on the container necked end while the push plate is out of contact with the container.
Claim 3
Dependent Claim
54 words
The mechanism defined by claim 1, in which the cams are contoured to have substantially complemental working faces on corresponding parts of their peripheral surfaces which actuate the push plate to push the container and simultaneously actuate the punch to engage the container and to move the container and punch in the same direction.
Claim 4
Independent Claim
106 words
The method of necking an open end container which comprises the steps of moving the container toward a stationary necking die and reciprocable punch by exerting pressure against the container end while the opposite end is free of pressure, moving the punch and container simultaneously in the same direction to position the container end between the punch and die in necking engagement therewith, and exerting pressure on the necked end to free the container from the punch and die while the bottom of the container is free of pressure, whereby pressure caused by friction between can and punch and consequent injury to the container are eliminated.
Claim 5
Independent Claim
106 words
The method of necking an open end container which comprises the steps of moving the container toward a stationary necking die and reciprocable punch by exerting pressure against the container end while the opposite end is free of pressure, moving the punch and container simultaneously in the same direction to position the container end between the punch and die in necking engagement therewith, and exerting pressure on the necked end to free the container from the punch and die while the bottom of the container is free of pressure, whereby pressure caused by friction between can and punch and consequent injury to the container are eliminated.
Claim 6
Independent Claim
125 words
The method of necking a container having a closed end and an open end, which comprises the steps of moving the container toward necking mechanism by imposing pressure against the closed end of the container in axial direction while the open end is free from pressure, moving the container by pressure against the closed end into necking position and simultaneously engaging the open end by necking mechanism moving in the same direction as that imposed on the container closed end, and moving the necked container away from the necking mechanism by imposing pressure against the open end while the closed end of the container is free from pressure, whereby pressure caused by friction between can and punch and consequent injury to the container are eliminated.
Claim 7
Independent Claim
125 words
The method of necking a container having a closed end and an open end, which comprises the steps of moving the container toward necking mechanism by imposing pressure against the closed end of the container in axial direction while the open end is free from pressure, moving the container by pressure against the closed end into necking position and simultaneously engaging the open end by necking mechanism moving in the same direction as that imposed on the container closed end, and moving the necked container away from the necking mechanism by imposing pressure against the open end while the closed end of the container is free from pressure, whereby pressure caused by friction between can and punch and consequent injury to the container are eliminated.
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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) | 1975-08-29 | 1976-02-28 | 1976-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-29 | 1980-02-28 | 1980-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-29 | 1984-02-28 | 1984-08-29 | $7700.00 | Window Closed / Lapsed |