US3788028A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for packing machines
Assignee: Tetra Pak AB
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Filing: 1972-10-24
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Granted: 1974-01-29
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Expires: 1992-10-24
Abstract
Abstract A rotatable device operable by engagement with spaced, transverse creases in a longitudinal, moving web of packaging material, said device controlling means for performing an operation such as printing information on or punching holes in the web at specific places relative to the transverse creases.
Inventors
- 👤 B Folkesson
- 👤 L Nilsson
- 👤 U Sjostrand
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:37
CPC Classifications
B; B65; B65B; B65B41/00; B65B41/18; Y; Y10; Y10T; Y10T83/00; Y10T83/525; Y10T83/541; Y10T83/544
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
148 words
A device for controlling the spacing along a continuous longitudinal, moving web at which an operation is to be carried out thereon, said web being formed of a packaging material having a plurality of spaced transverse creases provided therein, said device comprising rotatable means having an axis transverse to the longitudinal web and over which the web is drawn, said means including at least one longitudinally defined edge spaced from the axis of rotation and extending transversely of the web, whereby when the web is drawn over said rotatable means, the successive creases in the web successively engage at least one edge of said rotatable means to rotate said means about its axis, means for carrying out an operation on the web and means operable by said rotatable means for controlling said means for carrying oUt the desired operation on the web at the desired spaced locations therealong.
Claim 2
Independent Claim
148 words
A device for controlling the spacing along a continuous longitudinal, moving web at which an operation is to be carried out thereon, said web being formed of a packaging material having a plurality of spaced transverse creases provided therein, said device comprising rotatable means having an axis transverse to the longitudinal web and over which the web is drawn, said means including at least one longitudinally defined edge spaced from the axis of rotation and extending transversely of the web, whereby when the web is drawn over said rotatable means, the successive creases in the web successively engage at least one edge of said rotatable means to rotate said means about its axis, means for carrying out an operation on the web and means operable by said rotatable means for controlling said means for carrying oUt the desired operation on the web at the desired spaced locations therealong.
Claim 3
Dependent Claim
73 words
A device as claimed in claim 1 wherein said rotatable means includes at least two longitudinally defined edges spaced from the axis of rotation and peripherally spaced according to the distance between adjacent transverse creases in the web whereby the web is drawn over said rotatable means at least one of said at least two edges will always be in engagement with a crease in the web to thereby drive said rotatable means.
Claim 4
Dependent Claim
41 words
A device as claimed in claim 1 wherein the means for carrying out the operation on the web is electrically controlled and said control means operable by said rotatable means includes an electric switch for actuating the electrically controlled operation means.
Claim 5
Dependent Claim
43 words
A device as claimed in claim 1 wherein the means for carrying out an operation on the web includes means for periodically starting and stopping said operation means and includes means controlled by said rotatable means for actuating said starting and stopping means.
Claim 6
Dependent Claim
84 words
A device as claimed in claim 1 wherein said rotatable means comprises two wing-like, longitudinal elements mounted parallel to the axis of rotation and spaced therefrom, each element having two spaced outer edges extending parallel to the axis of rotation for engagement with the creases of the web, the distance between the two spaced outer edges of one element and the distance between adjacent edges of the two elements in the peripheral direction being equal to the distances between the creases in the web.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-01-28 | 1977-07-30 | 1978-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-28 | 1981-07-30 | 1982-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-28 | 1985-07-30 | 1986-01-29 | $7700.00 | Window Closed / Lapsed |