Patent US4391302A successfully refreshed from Google Patents.
US4391302A
Expired / Lapsed
US
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Coupled tubular casing for foodstuffs
Assignee: Dow Produktions und Vertriebs GmbH and Co OHG
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Filing: 1980-01-23
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Granted: 1983-07-05
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Expires: 2000-01-23
Abstract
Abstract Coupled tubular casings are obtained by placing a coupling piece, preferably a multilayered foil, on the inside of and overlapping two adjacent ends of tubular casings to be coupled and whose adjacent edges make an angle of 10 DEG to 80 DEG with the envisaged axis of the tubular casing, and sealing it.
Inventors
- 👤 Helmut Huhn
- 👤 Siegfried Kaiser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:42
CPC Classifications
B; B29; B29C; B29C66/00; B29C66/01; B29C66/05; B29C66/10; B29C66/11; B29C66/114; B29C66/1142; A; A22; A22C; A22C13/00; B29C65/00; B29C65/48; B29C65/50; B29C65/5007; B29C65/5021; B29C65/5042; B29C66/40; B29C66/41; B29C66/43; B29C66/431; B29C66/4312; B29C66/43129; B29C66/50; B29C66/51; B29C66/52; B29C66/522; B29C66/5221; B29C66/70; B29C66/72; B29C66/723; B29C66/7232; B29C66/72327; B29C66/73; B29C66/739; B29C66/7392; B29C66/80; B29C66/82; B29C66/824; B29C66/8242; B29C66/83; B29C66/832; B29C66/8322; B29C65/4805; B29C65/481; B29C65/4815; B29C65/482; B29C66/71; B29C66/721; B29L; B29L2009/00; B29L2023/00; B29L2023/001; B29L2023/002; Y; Y10; Y10S; Y10S285/00; Y10S285/915
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
119 words
A flexible shirrable coupled tubular casing for foodstuffs having a plurality of couplings the coupling seams of which are formed by adjacent ends of tubular casing portions to be coupled and a multilayered sealable foil, the adjacent ends of the tubular casing portions to be coupled each having a continuous circumferential edge portion which substantially lies in a plane extending at an oblique angle of 10° to 80° to the longitudinal axis of the tubular casing, and the foil placed in sealing engagement with and partially inside each of the adjacent ends of the tubular casing portions to be coupled and also extending at an oblique angle of 10° to 80° to the longitudinal axis of the tubular casing.
Claim 2
Dependent Claim
119 words
A flexible shirrable coupled tubular casing for foodstuffs having a plurality of couplings the coupling seams of which are formed by adjacent ends of tubular casing portions to be coupled and a multilayered sealable foil, the adjacent ends of the tubular casing portions to be coupled each having a continuous circumferential edge portion which substantially lies in a plane extending at an oblique angle of 10° to 80° to the longitudinal axis of the tubular casing, and the foil placed in sealing engagement with and partially inside each of the adjacent ends of the tubular casing portions to be coupled and also extending at an oblique angle of 10° to 80° to the longitudinal axis of the tubular casing.
Claim 3
Dependent Claim
24 words
A casing as claimed in claim 1, in which the multilayered foil comprises at least one supporting layer and at least one sealing layer.
Claim 4
Dependent Claim
38 words
A casing as claimed in claim 2, in which the supporting layer of the multilayered foil comprises 6-polyamide; 6,6-polyamide; 6,11-polyamide; 11-polyamide; 12-polyamide or a copolyamide thereof, polyethylene terephthalate, polycarbonate, polypropylene or regenerated cellulose with or without fibre reinforcement.
Claim 5
Dependent Claim
24 words
A casing as claimed in claim 2, in which the sealing layer comprises polyvinylidene chloride, polyvinylidene fluoride or a copolymer thereof, nitrocellulose or polyethylene.
Claim 6
Dependent Claim
24 words
A casing as claimed in claim 1, in which the multilayered foil includes an adhesifying layer between the supporting layer and the sealing layer.
Claim 7
Dependent Claim
31 words
A casing as claimed in claim 5, in which the adhesifying layer comprises a carboxylic acid amide-N-methylol derivative, a polyacrylic compound, a polyethyleneimine condensate, a melamine-formaldehyde condensate or a urea-formaldehyde condensate.
Claim 8
Dependent Claim
20 words
A casing as claimed in claim 2, in which the sealing layer of the multilayered foil is a one-coat lacquer.
Claim 9
Dependent Claim
46 words
A casing as claimed in claim 1, in which the coupling seam formed by the abutting edges of the adjacent ends of the tubular casing portions to be coupled extend at an oblique angle of 30° to 60° to the longitudinal axis of the tubular casing.
Claim 10
Dependent Claim
16 words
A casing as claimed in claim 8, in which the oblique angle is 40° to 50°.
Claim 11
Dependent Claim
14 words
A casing as claimed in claim 9, in which the oblique angle is 45°.
Claim 12
Dependent Claim
57 words
A casing as claimed in claim 1, in which the multilayered foil has approximately the form of a parallelogram, in which a pair of opposite sides form an angle equal to the oblique angle of the coupling seam and the other pair of opposite sides form an angle supplementary to the oblique angle of the coupling seam.
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) | 1986-07-04 | 1987-01-03 | 1987-07-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-07-04 | 1991-01-03 | 1991-07-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-07-04 | 1995-01-03 | 1995-07-05 | $7700.00 | Window Closed / Lapsed |