US3581691A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus and method for trimming can bodies
Assignee: EW Bliss Co Inc
•
Filing: 1969-04-17
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Granted: 1971-06-01
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Expires: 1989-04-17
Abstract
Abstract Cylindrical can bodies having irregular ends are circumferentially trimmed by a knife moving into engagement with a rotating can body. The knife is arranged to form a burr on the outside edge of the cut and the burr is swaged flat by a roller or flat tool following the knife. The knife and swaging means are on a common support movable toward and away from rotating can bodies. The swaging means may be independently spring biased toward a can body.
Inventors
- 👤 John S Ringler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:38
CPC Classifications
B; B23; B23B; B23B5/00; B23B5/14; Y; Y10; Y10S; Y10S83/00; Y10S83/914; Y10T; Y10T83/00; Y10T83/04; Y10T83/0596
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
85 words
A device for trimming ends of tubular can bodies or the like having inner and outer surfaces comprising: cutting means for making a circumferential cut in said body, said cutting means being formed and positioned to form a burr on said body at said cut, said burr extending outwardly from one of said surfaces, and operating means positioned at a circumferentially spaced position from said cutting means for operating on said burr to aid in removing said burr from said can body at said cut.
Claim 2
Independent Claim
85 words
A device for trimming ends of tubular can bodies or the like having inner and outer surfaces comprising: cutting means for making a circumferential cut in said body, said cutting means being formed and positioned to form a burr on said body at said cut, said burr extending outwardly from one of said surfaces, and operating means positioned at a circumferentially spaced position from said cutting means for operating on said burr to aid in removing said burr from said can body at said cut.
Claim 3
Dependent Claim
26 words
The device of claim 1 and including holding means for holding said can body, and yieldable biasing means yieldably biasing and operating means against said burr.
Claim 4
Dependent Claim
25 words
The device of claim 1 wherein said cutting means is positioned exteriorly of said body and forms said burr extending outwardly from said outer surface.
Claim 5
Dependent Claim
43 words
The device of claim 3 wherein said can body has a longitudinal axis and said device includes means for rotating said can body about said axis, said cutting means and said operating means being mounted for movement toward and away from said body.
Claim 6
Dependent Claim
40 words
The device of claim 4 and further including common movable support means supporting said cutting means and said operating means, said support means being movable to move said cutting means and operating means toward and away from said can body.
Claim 7
Dependent Claim
39 words
The device of claim 5 wherein said operating means is movably mounted on said support means for movement toward and away from said can body and further including yieldable biasing means biasing said operating means toward said can body.
Claim 8
Dependent Claim
30 words
The device of claim 6 wherein said operating means is pivotally mounted on said support means on a pivot axis substantially parallel to said longitudinal axis of said can body.
Claim 9
Dependent Claim
23 words
The device of claim 6 and further including adjustable abutment means for adjustably limiting movement of said operating means toward said can body.
Claim 10
Dependent Claim
49 words
THe device of claim 5 wherein said support means is pivotally mounted on a support pivot axis substantially parallel to said longitudinal axis of said can body for pivotal movement to swing said operating means and said cutting means in arcuate paths toward and away from said can body.
Claim 11
Dependent Claim
47 words
The device of claim 5 wherein said cutting means engages said can body at a predetermined point and said operating means is positioned for engaging said burr at a position not greater than 90* from said predetermined point in the direction of rotation of said can body.
Claim 12
Independent Claim
57 words
A method of trimming a tubular can body or the like having an inner surface and an outer surface comprising: rotating said can body and making a circumferential cut around said can body to form a burr extending outwardly from said outer surface at said cut, and removing said burr while continuing rotation of said can body.
Claim 13
Independent Claim
57 words
A method of trimming a tubular can body or the like having an inner surface and an outer surface comprising: rotating said can body and making a circumferential cut around said can body to form a burr extending outwardly from said outer surface at said cut, and removing said burr while continuing rotation of 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) | 1974-05-31 | 1974-11-30 | 1975-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-31 | 1978-11-30 | 1979-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-31 | 1982-11-30 | 1983-06-01 | $7700.00 | Window Closed / Lapsed |