Patent US3807130A successfully refreshed from Google Patents.
US3807130A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for batch packing of food in tubular films
Assignee: CIMBRER STAAL
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Filing: 1972-04-25
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Granted: 1974-04-30
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Expires: 1992-04-25
Abstract
Abstract In the packing of meat within a tubular synthetic film casing, the casing is mounted in bunched, pleated condition on the outer surface of a hollow tubular housing and is sealed off at the forward end thereof which overlies the front end of the housing. A cut piece of meat is inserted through the rear end of the housing and air is evacuated from the interior of the latter, drawing the sealed end of the casing into the housing and against the forward end of the meat. The meat piece is then pushed forwardly through and out of the evacuated housing, drawing a length of the tubular casing with it, the casing wrapping tightly and smoothly about the meat. The opposite end of the casing is sealed off and cut, resulting in a packaged meat product without air trapped therein.
Inventors
- 👤 H Pedersen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 09:34
CPC Classifications
B; B65; B65B; B65B25/00; B65B25/06; B65B25/065; B65B9/00; B65B9/10; B65B9/15
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
271 words
Apparatus for the packing of portions of food articles such as cut meat for producing airtight retail food packages, comprising a stationary tube defining therewith an elongated chamber having an open inlet end and an open outlet end, an outer surface on said tube sized and adapted to receive thereabout a considerable length of tubular film in bunched, pleated condition, with said bunched film extending longitudinally along the tube from the outlet end of said chamber toward the inlet end thereof, with the end of said tubular film sealed of at the outlet end of said tube, a semi-cylindrical tray for supporting a food portion thereon, said tray being sized to fit within said tube and being of a length substantially equal to the length of said tube, a sealing member integral with the rear end of said tray and movable therewith, means for moving said sealing member and tray with said food portion thereon in a direction to bring said tray fully within the interior of said tube through the open inlet end thereof, with said sealing member making sealing engagement with the inlet end of said tube, and an ejector member coupled to said sealing member and movable therewith into the interior of said tube, and means for uncoupling said ejecter member from said sealing member and moving said ejector member through said tube independently of said sealing member after the latter is in sealing engagement with the inlet end of said tube, whereby said ejector member pushes said food portion from the outlet end of said tube with a length of tubular film wrapped around said food portion.
Claim 2
Dependent Claim
271 words
Apparatus for the packing of portions of food articles such as cut meat for producing airtight retail food packages, comprising a stationary tube defining therewith an elongated chamber having an open inlet end and an open outlet end, an outer surface on said tube sized and adapted to receive thereabout a considerable length of tubular film in bunched, pleated condition, with said bunched film extending longitudinally along the tube from the outlet end of said chamber toward the inlet end thereof, with the end of said tubular film sealed of at the outlet end of said tube, a semi-cylindrical tray for supporting a food portion thereon, said tray being sized to fit within said tube and being of a length substantially equal to the length of said tube, a sealing member integral with the rear end of said tray and movable therewith, means for moving said sealing member and tray with said food portion thereon in a direction to bring said tray fully within the interior of said tube through the open inlet end thereof, with said sealing member making sealing engagement with the inlet end of said tube, and an ejector member coupled to said sealing member and movable therewith into the interior of said tube, and means for uncoupling said ejecter member from said sealing member and moving said ejector member through said tube independently of said sealing member after the latter is in sealing engagement with the inlet end of said tube, whereby said ejector member pushes said food portion from the outlet end of said tube with a length of tubular film wrapped around said food portion.
Claim 3
Dependent Claim
38 words
Apparatus according to claim 1 in which said sealing member comprises a sealing piston having a forward outer surface sized and shaped to make flush engagement with a concave sealing surface at the inlet end of said chamber.
Claim 4
Dependent Claim
56 words
Apparatus according to claim 2 which also includes a piston rod carrying said sealing piston and having an airtight sliding connection therewith, said ejector member comprising an ejector head affixed to the end of said piston rod, and releasable connecting means coupling said ejector head with said sealing piston for release at a selected feeding force.
Claim 5
Dependent Claim
46 words
Apparatus according to claim 3 in which said releasable connecting means includes a recess in the face of said sealing piston, a flange bordering said recess, and an O-ring mounted on said ejector head and sized to snap past said flange and move into said recess.
Claim 6
Dependent Claim
38 words
Apparatus according to claim 1 in which the rear portion of said tray is open at its top, the front end portion of said tray having at least one ring member having a clearance fit within said chamber.
Claim 7
Dependent Claim
55 words
Apparatus according to claim 1 in which lightly tensioned stroking means is positioned around the outer surface of said tube adjacent the outlet end thereof, said stroking means comprising an elastomeric lip-packing positioned to press toward the tube outer surface for smooth stretching of the tubular film drawn between said lip-packing and said tube surface.
Claim 8
Dependent Claim
26 words
Apparatus according to claim 6 in which said lip-packing has a free edge positioned to face in a direction toward the outlet end of said chamber.
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) | 1977-04-29 | 1977-10-29 | 1978-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-04-29 | 1981-10-29 | 1982-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-04-29 | 1985-10-29 | 1986-04-30 | $7700.00 | Window Closed / Lapsed |