Patent US3577866A successfully refreshed from Google Patents.
US3577866A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Packaging apparatus and package
Assignee: Goodyear Tire and Rubber Co
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Filing: 1969-10-13
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Granted: 1971-05-11
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Expires: 1989-10-13
Abstract
Abstract The material to be packaged, referred to herein as the content of a package, may be one or more boxes, or cans on a tray or trays, or a stack of magazines, etc. A series of these, all of the same size or different sizes are fed successively through the apparatus where each is individually wrapped in heat-shrinkable, heat-sealable film to form an open-ended package with the ends of the film overlapped under the package. The overlapped ends of the film are heated and sealed to one another. The entire package is then heated and the film is shrunk tight on the content, and the edges of the film which extended beyond the content are shrunk in over the ends of the content.
Inventors
- 👤 John F Ehrenfried
- 👤 Charles M Gardner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:46
CPC Classifications
B; B65; B65B; B65B11/00; B65B11/06; B65B11/38; B65B11/40; B65B53/00; B65B53/02
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
178 words
Packaging apparatus which comprises means for supporting an expanse of film from above with means for clamping the film in position above the bottom end thereof, means for moving the content of a package against the film on to a support whereby the film covers the forward end of the bottom of the content and extends upwardly back over the top of the package, a pair of wiper rollers arranged laterally side by side above the upwardly extending expanse of the film, means for lowering these rollers and thereby covering the rear of the content with the film, a stationary knife parallel to the wiper rollers with means for lowering the rollers into position on opposite sides of the knife while said clamp holds the film and thereby cutting the film between the rollers, means for sliding the content off of the support with its rear end forward and thereby moving the freshly cut end of the film into overlapping relation with the end of the film which covers the forward end of the bottom of the content.
Claim 2
Dependent Claim
178 words
Packaging apparatus which comprises means for supporting an expanse of film from above with means for clamping the film in position above the bottom end thereof, means for moving the content of a package against the film on to a support whereby the film covers the forward end of the bottom of the content and extends upwardly back over the top of the package, a pair of wiper rollers arranged laterally side by side above the upwardly extending expanse of the film, means for lowering these rollers and thereby covering the rear of the content with the film, a stationary knife parallel to the wiper rollers with means for lowering the rollers into position on opposite sides of the knife while said clamp holds the film and thereby cutting the film between the rollers, means for sliding the content off of the support with its rear end forward and thereby moving the freshly cut end of the film into overlapping relation with the end of the film which covers the forward end of the bottom of the content.
Claim 3
Dependent Claim
44 words
The apparatus of claim 1 which comprises a sealing bar with means for heating the same, and means for pushing the content of the package over this sealing bar to wipe the freshly cut end of the film against the bottom of the package.
Claim 4
Dependent Claim
26 words
The apparatus of claim 2 which comprises a shrink tunnel with means for moving the package from contact with the sealing bar into the shrink tunnel.
Claim 5
Dependent Claim
127 words
Apparatus for wrapping the intended content of a package in film with means for moving the content of the package against film supported in film-supporting means onto a rotatable support and thereby wrapping the film around the forward end of the content with one end of the film under the content, means for rotating the support about a vertical axis and means for moving the content so wrapped radially in the reverse direction off the support onto a second support to overlap the ends of the film, with a heat-sealing plate in the surface of the support for sealing the overlapped ends of the film, and means for heating the package after it has passed over the heat-sealing plate all of said means being in one plane.
Claim 6
Dependent Claim
127 words
Apparatus for wrapping the intended content of a package in film with means for moving the content of the package against film supported in film-supporting means onto a rotatable support and thereby wrapping the film around the forward end of the content with one end of the film under the content, means for rotating the support about a vertical axis and means for moving the content so wrapped radially in the reverse direction off the support onto a second support to overlap the ends of the film, with a heat-sealing plate in the surface of the support for sealing the overlapped ends of the film, and means for heating the package after it has passed over the heat-sealing plate all of said means being in one plane.
Claim 7
Dependent Claim
174 words
Packaging equipment which comprises first, second and third supports, the second support being rotatable with respect to the other two, a support for a supply of film and means for draping a loop of the film between the first and second supports, means for cutting the film into first and second portions near the bottom of the loop, means for sliding the contents of packageS successively from the first support against the first portion of the film loop and then on to the second support, and means for rotating the second support and for pushing the contents successively back off the second support onto the third support, means for temporarily holding the first portion of the loop of the film against a package content after the content is moved against it, means for removing the second portion of the film from between the first and second supports, means for heating the area of the third support contacted by the bottom of a content slid onto it, and a shrink tunnel on the third support.
Claim 8
Dependent Claim
174 words
Packaging equipment which comprises first, second and third supports, the second support being rotatable with respect to the other two, a support for a supply of film and means for draping a loop of the film between the first and second supports, means for cutting the film into first and second portions near the bottom of the loop, means for sliding the contents of packageS successively from the first support against the first portion of the film loop and then on to the second support, and means for rotating the second support and for pushing the contents successively back off the second support onto the third support, means for temporarily holding the first portion of the loop of the film against a package content after the content is moved against it, means for removing the second portion of the film from between the first and second supports, means for heating the area of the third support contacted by the bottom of a content slid onto it, and a shrink tunnel on the third support.
Claim 9
Dependent Claim
36 words
The equipment of claim 5 in which the means for pushing a content back off of the second support is a clamp bar and there is means for moving the clamp bar to push the content.
Claim 10
Dependent Claim
43 words
The apparatus of claim 5 which comprises an opening in the second support just below the area of the surface on to which a content is to be slid, and vacuum means is provided at the opening to suck film to the support.
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) | 1974-05-10 | 1974-11-09 | 1975-05-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-10 | 1978-11-09 | 1979-05-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-10 | 1982-11-09 | 1983-05-11 | $7700.00 | Window Closed / Lapsed |