US3869846A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Folding device for packaging machines
Assignee: Packautomatic & Co KG Firma GmbH
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Filing: 1973-08-01
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Granted: 1975-03-11
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Expires: 1993-08-01
Abstract
Abstract A folding device on a packaging machine for wrapping goods in a foil comprises a device for feeding goods to be wrapped along a path and an arrangement for supplying a foil having lateral end portions and a front vertical foil portion as well as a rear end portion and an overhanging upper horizontal foil portion, toward the path, for wrapping around the goods. A device seals and cuts the foil during the feeding of the goods. A rigid first folding finger effects inward folding of a front vertical portion of the foil. A rear folding device includes a second folding finger for folding the rear end portion of the foil. The rear folding device includes a supporting finger, and a device for setting the supporting finger intermittently below the overhanging upper horizontal foil portion.
Inventors
- 👤 Karl-Ernst Timmerbeil
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 09:11
CPC Classifications
B; B65; B65B; B65B49/00; B65B49/08
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
225 words
In a packaging machine for wrapping articles in a foil, the combination which comprises: transport means for feeding said articles along a path; means for feeding a lower foil along the underside of said article and an upper foil along the upper side of said article with said foils laterally overhanging ends of the article; means for sealing said foils together, thereby forming a sleeve with the overhanging portions of the foil including a vertical front portion, a horizontal upper portion and a vertical rear portion; a fixed first folding finger disposed along said path and engageable with the vertical front portion of a sleeve wrapped around an article displaced along said path for folding said vertical front portiOn inwardly against the latter article; a shaft disposed alongside said path and rotatable about an axis perpendicular to the direction of feed of said articles; a supporting finger mounted on said shaft and swingable thereby into a position underlying said horizontal upper portion of said sleeve for supporting said horizontal upper portion against sagging; and a second folding finger mounted on said shaft below said support finger and angularly offset therefrom which swings by said shaft into engagement with said rear vertical portion to fold the same inwardly against the article into a space maintained by the support of said horizontal upper portion by said support.
Claim 2
Dependent Claim
225 words
In a packaging machine for wrapping articles in a foil, the combination which comprises: transport means for feeding said articles along a path; means for feeding a lower foil along the underside of said article and an upper foil along the upper side of said article with said foils laterally overhanging ends of the article; means for sealing said foils together, thereby forming a sleeve with the overhanging portions of the foil including a vertical front portion, a horizontal upper portion and a vertical rear portion; a fixed first folding finger disposed along said path and engageable with the vertical front portion of a sleeve wrapped around an article displaced along said path for folding said vertical front portiOn inwardly against the latter article; a shaft disposed alongside said path and rotatable about an axis perpendicular to the direction of feed of said articles; a supporting finger mounted on said shaft and swingable thereby into a position underlying said horizontal upper portion of said sleeve for supporting said horizontal upper portion against sagging; and a second folding finger mounted on said shaft below said support finger and angularly offset therefrom which swings by said shaft into engagement with said rear vertical portion to fold the same inwardly against the article into a space maintained by the support of said horizontal upper portion by said support.
Claim 3
Dependent Claim
225 words
In a packaging machine for wrapping articles in a foil, the combination which comprises: transport means for feeding said articles along a path; means for feeding a lower foil along the underside of said article and an upper foil along the upper side of said article with said foils laterally overhanging ends of the article; means for sealing said foils together, thereby forming a sleeve with the overhanging portions of the foil including a vertical front portion, a horizontal upper portion and a vertical rear portion; a fixed first folding finger disposed along said path and engageable with the vertical front portion of a sleeve wrapped around an article displaced along said path for folding said vertical front portiOn inwardly against the latter article; a shaft disposed alongside said path and rotatable about an axis perpendicular to the direction of feed of said articles; a supporting finger mounted on said shaft and swingable thereby into a position underlying said horizontal upper portion of said sleeve for supporting said horizontal upper portion against sagging; and a second folding finger mounted on said shaft below said support finger and angularly offset therefrom which swings by said shaft into engagement with said rear vertical portion to fold the same inwardly against the article into a space maintained by the support of said horizontal upper portion by said support.
Claim 4
Dependent Claim
225 words
In a packaging machine for wrapping articles in a foil, the combination which comprises: transport means for feeding said articles along a path; means for feeding a lower foil along the underside of said article and an upper foil along the upper side of said article with said foils laterally overhanging ends of the article; means for sealing said foils together, thereby forming a sleeve with the overhanging portions of the foil including a vertical front portion, a horizontal upper portion and a vertical rear portion; a fixed first folding finger disposed along said path and engageable with the vertical front portion of a sleeve wrapped around an article displaced along said path for folding said vertical front portiOn inwardly against the latter article; a shaft disposed alongside said path and rotatable about an axis perpendicular to the direction of feed of said articles; a supporting finger mounted on said shaft and swingable thereby into a position underlying said horizontal upper portion of said sleeve for supporting said horizontal upper portion against sagging; and a second folding finger mounted on said shaft below said support finger and angularly offset therefrom which swings by said shaft into engagement with said rear vertical portion to fold the same inwardly against the article into a space maintained by the support of said horizontal upper portion by said support.
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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) | 1978-03-10 | 1978-09-09 | 1979-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-10 | 1982-09-09 | 1983-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-10 | 1986-09-09 | 1987-03-11 | $7700.00 | Window Closed / Lapsed |