Patent US3568633A successfully refreshed from Google Patents.
US3568633A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for arresting container closures on lining machines
Assignee: Individual
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Filing: 1968-11-18
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Granted: 1971-03-09
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Expires: 1988-11-18
Abstract
Abstract Closures and small parts being fed to a rotary chuck where a gasketing compound is applied are arrested from overrunning the chuck by a curtain of air which closely surrounds the chuck periphery. Forward momentum is checked as the closure is pushed through the air wall onto the chuck. Full arrest occurs as the leading edge of the closure meets the opposite air wall. Closures are then held on the chuck by differential air pressure.
Inventors
- 👤 William B Harrison
- 👤 Clifford F Tirrell
- 👤 James J Rosati
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 06:48
CPC Classifications
B; B21; B21D; B21D51/00; B21D51/16; B21D51/38; B21D51/44; B21D51/46; Y; Y10; Y10T; Y10T279/00; Y10T279/11
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
133 words
In a lining machine including a worktable wherein a chuck sequentially receives workpieces to be lined from workpiece feeding means, means to prevent the said workpieces from overrunning or miscentering on the chuck, which includes an openfaced annulus closely surrounding said chuck, and conduit means connecting said annulus to air-displacing means whereby an annular air curtain closely adjacent to the periphery of the chuck may be established by flow of air into the said annulus; a removable ring located in the work surface of said machine and closely surrounding said chuck, said ring being provided with a channel connected to air-exhaust means whereby a curtain of air moving downwardly into said channel may be established and whereby said air flow and curtain of air are effective to prevent closures from overrunning said chuck.
Claim 2
Dependent Claim
133 words
In a lining machine including a worktable wherein a chuck sequentially receives workpieces to be lined from workpiece feeding means, means to prevent the said workpieces from overrunning or miscentering on the chuck, which includes an openfaced annulus closely surrounding said chuck, and conduit means connecting said annulus to air-displacing means whereby an annular air curtain closely adjacent to the periphery of the chuck may be established by flow of air into the said annulus; a removable ring located in the work surface of said machine and closely surrounding said chuck, said ring being provided with a channel connected to air-exhaust means whereby a curtain of air moving downwardly into said channel may be established and whereby said air flow and curtain of air are effective to prevent closures from overrunning said chuck.
Claim 3
Dependent Claim
120 words
In a lining machine including a worktable wherein a chuck sequentially receives workpieces to be lined from workpiece feeding means, an annular air passage surrounding said chuck, passages associated with said annular passage leading to air displacement means to establish an annular curtain of air passing through said annulus, the said annular air curtain being effective to resist forward movement of the closures beyond the chuck position, and to check the overrunning of closures past the said chuck, a vacuum chest in said machine wherein the said chuck in its loading position rotates below the plane of the work surface, and wherein the annulus is formed by a gap between the said chuck and the worktable of the said machine.
Claim 4
Dependent Claim
120 words
In a lining machine including a worktable wherein a chuck sequentially receives workpieces to be lined from workpiece feeding means, an annular air passage surrounding said chuck, passages associated with said annular passage leading to air displacement means to establish an annular curtain of air passing through said annulus, the said annular air curtain being effective to resist forward movement of the closures beyond the chuck position, and to check the overrunning of closures past the said chuck, a vacuum chest in said machine wherein the said chuck in its loading position rotates below the plane of the work surface, and wherein the annulus is formed by a gap between the said chuck and the worktable of the said machine.
References Cited (Backward Citations)
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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) | 1974-03-08 | 1974-09-07 | 1975-03-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-08 | 1978-09-07 | 1979-03-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-08 | 1982-09-07 | 1983-03-09 | $7700.00 | Window Closed / Lapsed |