Patent US4765463A successfully refreshed from Google Patents.
US4765463A
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Display-tray constituting a package
Assignee: Bressor SA
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Filing: 1987-06-29
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Granted: 1988-08-23
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Expires: 2007-06-29
Abstract
Abstract The bottom (1) and the cover (2) are made from a rigid composite material constituted by a sheet of PVC coated with a layer of polyethylene on which is applied a film of polyethylene of peelable quality. The bottom (1) has cavities (4). Peripheral flanges (3, 3') includes ears (6, 6') and are welded along a strip (7) having weakened regions (8). The cover is peelable.
Inventors
- 👤 Arthur L. Chanel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 05:43
CPC Classifications
B; B29; B29C; B29C65/00; B29C65/76; B29C66/00; B29C66/01; B29C66/05; B29C66/10; B29C66/13; B29C66/131; B29C66/1312; B29C66/20; B29C66/24; B29C66/242; B29C66/2424; B29C66/24243; B29C66/24244; B29C66/50; B29C66/51; B29C66/54; B29C66/542; B29C66/70; B29C66/71; B29C66/72; B29C66/723; B29C66/7234; B29C66/72343; B65; B65D; B65D1/00; B65D1/34; B65D1/36; B65D43/00; B65D43/02; B65D43/0202; B65D43/0214; B29C65/02; B29C65/04; B29C65/48; B29K; B29K2023/00; B29K2023/04; B29K2023/06; B29L; B29L2031/00; B29L2031/712; B29L2031/7162; B29L2031/7168; B65D2543/00; B65D2543/00009; B65D2543/00018; B65D2543/00064; B65D2543/0012; B65D2543/00175; B65D2543/00194; B65D2543/00259; B65D2543/00296; B65D2543/00342; B65D2543/00351; B65D2543/00425; B65D2543/00444; B65D2543/00481; B65D2543/0049; B65D2543/00527; B65D2543/00537; B65D2543/00546; B65D2543/00824; B65D2543/00833; B65D2543/00842; B65D2577/00; B65D2577/10; B65D2577/20; B65D2577/2041; B65D2577/205
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
99 words
A package comprising a rigid bottom of PVC, a "peelable" wall constituting a cover for closing an upper part of said bottom, said cover also being of rigid polyvinyl chloride, at least one of two elements consisting of said bottom and said cover having on a surface thereof inside said package a thin layer of polyethylene of "peelable" quality, the rigidity of said bottom being greater than the rigidity of said cover, and a strip of welding located adjacent to the periphery of said bottom for fixing said cover to said bottom and having at least one weakened region.
Claim 2
Dependent Claim
99 words
A package comprising a rigid bottom of PVC, a "peelable" wall constituting a cover for closing an upper part of said bottom, said cover also being of rigid polyvinyl chloride, at least one of two elements consisting of said bottom and said cover having on a surface thereof inside said package a thin layer of polyethylene of "peelable" quality, the rigidity of said bottom being greater than the rigidity of said cover, and a strip of welding located adjacent to the periphery of said bottom for fixing said cover to said bottom and having at least one weakened region.
Claim 3
Dependent Claim
83 words
A rigid display-tray structure comprising a rigid bottom and a rigid cover both of PVC, at least one of two elements consisting of said bottom and said cover having on an internal surface thereof a thin layer of polyethylene of "peelable" quality, said bottom having cavities and a rigidity greater than the rigidity of said cover, and a strip of welding located adjacent to the periphery of said bottom for fixing said cover to said bottom and having at least one weakened region.
Claim 4
Dependent Claim
83 words
A rigid display-tray structure comprising a rigid bottom and a rigid cover both of PVC, at least one of two elements consisting of said bottom and said cover having on an internal surface thereof a thin layer of polyethylene of "peelable" quality, said bottom having cavities and a rigidity greater than the rigidity of said cover, and a strip of welding located adjacent to the periphery of said bottom for fixing said cover to said bottom and having at least one weakened region.
Claim 5
Dependent Claim
138 words
A display-tray structure constituting a package comprising a rigid bottom of PVC, a "peelable" wall constituting a cover for closing an upper part of said bottom, said cover also being of rigid polyvinyl chloride, at least one of two elements consisting of said bottom and said cover having on a surface thereof inside said package a thin layer of polyethylene of "peelable" quality, the rigidity of said bottom being greater than the rigidity of said cover, and a strip of welding located adjacent to the periphery of said bottom for fixing said cover to said bottom and having at least one weakened region, said bottom and said cover being formed from a sheet of PVC coated, after said sheet has been formed, with a layer of polyethylene on which a film of polyethylene of "peelable" quality is applied.
Claim 6
Dependent Claim
138 words
A display-tray structure constituting a package comprising a rigid bottom of PVC, a "peelable" wall constituting a cover for closing an upper part of said bottom, said cover also being of rigid polyvinyl chloride, at least one of two elements consisting of said bottom and said cover having on a surface thereof inside said package a thin layer of polyethylene of "peelable" quality, the rigidity of said bottom being greater than the rigidity of said cover, and a strip of welding located adjacent to the periphery of said bottom for fixing said cover to said bottom and having at least one weakened region, said bottom and said cover being formed from a sheet of PVC coated, after said sheet has been formed, with a layer of polyethylene on which a film of polyethylene of "peelable" quality is applied.
Claim 7
Dependent Claim
49 words
A display-tray structure according to claim 3, wherein said bottom and said cover each include a substantially flat outer peripheral flange, each flange having two opposed projecting ears of identical shape and dimensions, said bottom further comprising a trough adjacent to and on an inner side of said flange.
Claim 8
Dependent Claim
14 words
A display-tray structure according to claim 4, wherein said trough has a U-shaped cross-section.
Claim 9
Dependent Claim
26 words
A display-tray structure according to claim 4, wherein said peripheral flange of said bottom extends in a plane parallel to a general plane of said display-tray.
Claim 10
Dependent Claim
25 words
A display-tray structure according to claim 3, wherein said weakened region of said strip of welding is formed by a narrowed portion of said strip.
Claim 11
Dependent Claim
120 words
A display-tray structure constituting a package comprising a rigid bottom and a rigid cover both of PVC, at least one of two elements consisting of said bottom and said cover having on an internal surface thereof a thin layer of polyethylene of "peelable" quality, said bottom having cavities and a rigidity greater than the rigidity of said cover, and a strip of welding located adjacent to the periphery of said bottom for fixing said cover to said bottom and having at least one weakened region, said bottom and said cover being formed from a sheet of PVC coated, after said sheet has been formed, with a layer of polyethylene on which a film of polyethylene of "peelable" quality is applied.
Claim 12
Dependent Claim
120 words
A display-tray structure constituting a package comprising a rigid bottom and a rigid cover both of PVC, at least one of two elements consisting of said bottom and said cover having on an internal surface thereof a thin layer of polyethylene of "peelable" quality, said bottom having cavities and a rigidity greater than the rigidity of said cover, and a strip of welding located adjacent to the periphery of said bottom for fixing said cover to said bottom and having at least one weakened region, said bottom and said cover being formed from a sheet of PVC coated, after said sheet has been formed, with a layer of polyethylene on which a film of polyethylene of "peelable" quality is applied.
Claim 13
Dependent Claim
49 words
A display-tray structure according to claim 8, wherein said bottom and said cover each include a substantially flat outer peripheral flange, each flange having two opposed projecting ears of identical shape and dimensions, said bottom further comprising a trough adjacent to and on an inner side of said flange.
Claim 14
Dependent Claim
14 words
A display-tray structure according to claim 9, wherein said trough has a U-shaped cross-section.
Claim 15
Dependent Claim
26 words
A display-tray structure according to claim 9, wherein said peripheral flange of said bottom extends in a plane parallel to a general plane of said display-tray.
Claim 16
Dependent Claim
25 words
A display-tray structure according to claim 8, wherein said weakened region of said strip of welding is formed by a narrowed portion of said strip.
Claim 17
Dependent Claim
25 words
A display-tray structure constituting a package according to claim 1, wherein said bottom is opaque and said cover is hollow and of a transparent material.
Claim 18
Dependent Claim
25 words
A display-tray structure constituting a package according to claim 1, wherein said bottom is coloured and said cover is hollow and of a transparent material.
Claim 19
Dependent Claim
15 words
A display-tray structure constituting a package according to claim 1, filled with an inert gas.
Claim 20
Dependent Claim
21 words
A display-tray structure constituting a package according to claim 1, wherein said cover comprises at least one downwardly tapering internal projection.
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) | 1991-08-23 | 1992-02-22 | 1992-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-08-23 | 1996-02-22 | 1996-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-08-23 | 2000-02-22 | 2000-08-23 | $7700.00 | Window Closed / Lapsed |