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US3763629A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wrapping apparatus for bag packs
Assignee: Yale Industrial Products Inc
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Filing: 1972-02-09
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Granted: 1973-10-09
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Expires: 1992-02-09
Abstract
Abstract A wrapper is wrapped around a commodity to form mouths projecting beyond opposite ends of the commodity. Lip folders engage lips at one side and then at the opposite side of the mouths to fold such lips inward against the commodity and form opposed flaps at opposite sides of the package between the lips. After spraying adhesive on the facing sides of the flaps, heated doors fold the flaps toward each other against the commodity; and the heat sets the adhesive. The package is dragged from a lipfolding station to a flap-folding station and then to a discharge station by reciprocable shifting hooks.
Inventors
- 👤 T Carlstrom
- 👤 J Leavitt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 08:48
CPC Classifications
B; B65; B65B; B65B11/00; B65B11/06; B65B11/38; B65B11/40; B65B11/42; B65B49/00; B65B49/08
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
212 words
In wrapping apparatus for closing opposite flaps of a mouth of a wrapper projecting away from an end of a commodity covered by the wrapper including moving means for advancing the commodity from a first station to a second station, the improvement comprising confining means in advance oF the second station confining opposite sides of the opposite flaps of the wrapper for maintaining such opposite flaps in substantially parallel relationship during movement of the commodity from the first station toward the second station, pivoted doors at the second station swingable in opposite directions, respectively, toward the end of the commodity and engageable with the opposite flaps, respectively, of the wrapper mouth during such swinging for folding such flaps against the end of the commodity between such flaps, adhesive-applying means between the first station and the second station for applying adhesive to a side of at least one of the flaps while the flaps are maintained in such substantially parallel relationship by said confining means and during movement of the commodity from the first station toward the second station by the moving means, and heating means carried by at least one of said doors for heating the flap folded by such door to induce setting of the adhesive applied by said adhesive-applying means.
Claim 2
Dependent Claim
212 words
In wrapping apparatus for closing opposite flaps of a mouth of a wrapper projecting away from an end of a commodity covered by the wrapper including moving means for advancing the commodity from a first station to a second station, the improvement comprising confining means in advance oF the second station confining opposite sides of the opposite flaps of the wrapper for maintaining such opposite flaps in substantially parallel relationship during movement of the commodity from the first station toward the second station, pivoted doors at the second station swingable in opposite directions, respectively, toward the end of the commodity and engageable with the opposite flaps, respectively, of the wrapper mouth during such swinging for folding such flaps against the end of the commodity between such flaps, adhesive-applying means between the first station and the second station for applying adhesive to a side of at least one of the flaps while the flaps are maintained in such substantially parallel relationship by said confining means and during movement of the commodity from the first station toward the second station by the moving means, and heating means carried by at least one of said doors for heating the flap folded by such door to induce setting of the adhesive applied by said adhesive-applying means.
Claim 3
Dependent Claim
122 words
In the wrapping apparatus defined in claim 1, means for shifting the commodity from the first station to the second station including hook means engageable with the commodity at the first station in an initial position, reciprocable means for shifting said hook means from such initial position to move the commodity from the first station to the second station and to return said hook means to its initial position, and means supporting said hook means for movement transversely to the direction of movement of said hook means in shifting the commodity from the first station to the second station, to enable said hook means to pass another commodity which has been placed at the first station in returning to its initial position.
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) | 1976-10-08 | 1977-04-09 | 1977-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-08 | 1981-04-09 | 1981-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-08 | 1985-04-09 | 1985-10-09 | $7700.00 | Window Closed / Lapsed |