US3608709A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multiple compartment package
Assignee: CARL F SCHNEIDER
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Filing: 1969-09-08
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Granted: 1971-09-28
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Expires: 1989-09-08
Abstract
Abstract A multiple-compartment laminated package is provided which is suitable for holding in separate compartments different substances which can be mixed together within the package upon breaking the barrier between the separate compartments. This barrier can be broken by the application of external pressure to the package which applies tension to an inner layer of the outer wall of the package, such rupture of the inner layer taking place at a controlled location by virtue of a reduction in the bond strength between the inner layer and the next adjoining layer of the outer wall of the package.
Inventors
- 👤 Brian R Pike
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 01:42
CPC Classifications
B; B65; B65B; B65B9/00; B65B9/10; B65B9/20; B65B9/213; B29; B29C; B29C65/00; B29C65/76; B29C66/00; B29C66/01; B29C66/05; B29C66/10; B29C66/11; B29C66/112; B29C66/1122; B29C66/13; B29C66/133; B29C66/40; B29C66/41; B29C66/43; B29C66/431; B29C66/4312; B29C66/432; B29C66/4322; B29C66/70; B29C66/72; B29C66/723; B29C66/7234; B65D; B65D75/00; B65D75/40; B65D75/44; B65D75/48; B65D81/00; B65D81/32; B65D81/3261; B65D81/3266; B29C66/71; B65B2220/00; B65B2220/22; B65B9/2056
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
31 words
A multiple compartment package according to claim 1 in which the inner layer on each wall is a heat-sealable material and the transverse seal is one formed by heat and pressure.
Claim 2
Dependent Claim
44 words
A multiple compartment package according to claim 1 in which the transverse seal extends lengthwise thereof between opposite sides of the package and beyond the release area, and the width of the transverse seal is less than the corresponding dimension of the release area.
Claim 3
Dependent Claim
28 words
A multiple compartment package according to claim 1 which includes stress-concentrating means adjacent the transverse seal for facilitating rupture of the inner layer when same is in tension.
Claim 4
Dependent Claim
24 words
A multiple compartment package according to claim 1 in which the transverse seal is formed by a strip of adhesive applied to one wall.
Claim 5
Dependent Claim
31 words
A multiple compartment package according to claim 1 in which a said adjoining layer has printed on it over the release area a substance reducing the bond between the adjoining layers.
Claim 6
Dependent Claim
27 words
A multiple compartment package according to claim 1 which also includes a zone of weakness in the inner layer of said one wall within the release area.
Claim 7
Dependent Claim
22 words
A multiple compartment package according to claim 7 in which the zone of weakness is a thinned area in said inner layer.
Claim 8
Dependent Claim
105 words
A multiple compartment package according to claim 1 in which said one wall comprises: an outside layer of a relatively high-tensile strength material lacking thermoplastic properties; a first layer of a thermoplastic material of uniform thickness applied to one face of the outside layer; a coating of a release material applied to said first layer over a limited area, said material reducing the bond between it and the next mentioned layer; and an inner layer of a thermoplastic material applied to the first layer over the release material and strongly bonded to the first thermoplastic layer except at said coating to form the release area.
Claim 9
Dependent Claim
57 words
A multiple compartment package according to claim 1 in which the package comprises a single sheet of material with opposite marginal edges joined together in a longitudinal seam disposed centrally of one of said pair of walls of the package and the release area is on the other of said pairs of walls opposite the longitudinal seam.
Claim 10
Dependent Claim
29 words
A multiple compartment package according to claim 10 in which the ends of the package are each closed by a transverse seal generally parallel to the seal between compartments.
Claim 11
Dependent Claim
126 words
A multiple compartment container for holding substances in separate compartments, comprising: a pair of overlying walls of thin flexible sheet material joined together, except for product-receiving openings, to define between the walls an interior product-holding space, each of said walls having a plurality of layers bonded together and at least one wall having a release area at which the bond between adjoining layers is reduced in strength; and means dividing the interior product-holding space into two separate compartments, each having a product-receiving opening, said means comprising a seal joining together said walls and extending transversely across the package and crossing the release area; whereby the means dividing the interior space into two compartments can be ruptured by rupture of the inner layer at said release area.
Claim 12
Dependent Claim
30 words
A multiple compartment container according to claim 12 in which the inner layer on each wall is a heat-sealable material and the transverse seal is formed by heat and pressure.
Claim 13
Dependent Claim
44 words
A multiple compartment conTainer according to claim 12 in which the transverse seal extends lengthwise thereof between opposite sides of the container and beyond the release area, and the width of the transverse seal is less than the corresponding dimension of the release area.
Claim 14
Dependent Claim
31 words
A multiple compartment container according to claim 12 in which a said adjoining layer has printed on it over the release area a substance reducing the bond between the adjoining layers.
Claim 15
Dependent Claim
118 words
A package for holding a product, comprising: a pair of overlying walls of thin flexible sheet material joined together to define between the walls an interior product-holding space, each of said walls having a plurality of layers bonded together and at least one wall having a release area at which the bond between adjoining layers is reduced in strength; means closing the interior product-holding space at one side thereof, said means comprising a seal joining together said walls and extending transversely across the package and crossing the release area; and a product in said interior space; whereby an opening for product discharge from the package can be established by rupture of the inner layer at said release area.
Claim 16
Dependent Claim
28 words
A package according to claim 16 in which the inner layer on each wall is a heat-sealable material and the transverse seal is formed by heat and pressure.
Claim 17
Dependent Claim
42 words
A package according to claim 16 in which the transverse seal extends lengthwise thereof between opposite sides of the package and beyond the release area, and the width of the transverse seal is less than the corresponding dimension of the release area.
Claim 18
Dependent Claim
29 words
A package according to claim 16 in which a said adjoining layer has printed on it over the release area a substance reducing the bond between the adjoining layers.
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) | 1974-09-27 | 1975-03-29 | 1975-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-27 | 1979-03-29 | 1979-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-27 | 1983-03-29 | 1983-09-28 | $7700.00 | Window Closed / Lapsed |