WO1990003140A1 - Plateau - Google Patents

Plateau Download PDF

Info

Publication number
WO1990003140A1
WO1990003140A1 PCT/SE1989/000533 SE8900533W WO9003140A1 WO 1990003140 A1 WO1990003140 A1 WO 1990003140A1 SE 8900533 W SE8900533 W SE 8900533W WO 9003140 A1 WO9003140 A1 WO 9003140A1
Authority
WO
WIPO (PCT)
Prior art keywords
sealing
tray
base
tray according
snapping
Prior art date
Application number
PCT/SE1989/000533
Other languages
English (en)
Inventor
Stefan Ericson
Original Assignee
Eson International Limited
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Eson International Limited filed Critical Eson International Limited
Publication of WO1990003140A1 publication Critical patent/WO1990003140A1/fr

Links

Classifications

    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F23/00—Advertising on or in specific articles, e.g. ashtrays, letter-boxes
    • G09F23/06—Advertising on or in specific articles, e.g. ashtrays, letter-boxes the advertising matter being combined with articles for restaurants, shops or offices
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47G—HOUSEHOLD OR TABLE EQUIPMENT
    • A47G23/00—Other table equipment
    • A47G23/06—Serving trays

Definitions

  • the present invention relates to a tray intended to be used for meals, for serving purposes and similar purposes comprising an at least partially transparent top portion and a base portion, a volume or location being defined between the top portion and the base portion intended to be used for displaying information, advertisements and similar printed matter.
  • a tray of the kind mentioned above having the features set out in the characterizing part of claim 1.
  • the sealing means may be an elastic strip mounted on the base portion or the top portion. When the top and base portions are assembled this strip is elastically deformed and seals between these portions.
  • the sealing strip is preferably located in an elongated recess in the base portion.
  • the tray has a main, substantially flat central portion and margins or rims, located in an angle relative to the central portion.
  • the recess passing around the periphery of the base portion is located in the transfer or junction region between the flat main portion of the base and the marginal portion.
  • the top part comprises a substantially flat transparent plastic sheet and has a size adapted to at least partially cover or extend into said recess.
  • This recess may have the shape of a groove with a bottom substantially parallel to said flat main portion of the base.
  • the top portion will extend above the recess and in order to keep it in place an extension or rib facing the centre of the tray is provided and is located above the border of the top part.
  • the assembly of the tray will require that the top portion is pressed heavily downwards to the base portion in such a way that the marginal portions of the top are snapped in below said extension.
  • the sealing strip may be an endless preformed strip made of plastics or an elastomer. This preformed strip is positioned tightly in the groove and it may be provided with one or more sealing lips intended to engage with the lower surface of the top part.
  • the sealing may also be accomplished by using an elastomeric compound, preferably made of silicon rubber,, which is pressed out from an dispensing gun through a suitable nozzle and in this way is give a shape adapted to seal against the edge of the top part.
  • This sealing compound can be of the kind which will harden directly and in this way it will work in the same way as a preformed strip.
  • the sealing compound may also be wet, that is sticky and able to flow inside the groove and around the edge of said top part when this is pressed downwards to be positioned at its proper place. Such a sealing may in this way flow around the edge and also seal against some small portion of the top surface of the top part. After mounting the top portion the sealing material will settle or harden.
  • the extension or rib located on the base portion may only extend a small distance towards the centre of the tray in such a way that it will not come in contact with the margin of the top part when this is pressed down into it its proper position.
  • the rib will only serve as a means of limiting the recess where the marginal part of the top portion is to be located in order to form a groove well suited for the application of a hardening sealing compound.
  • the marginal portions of said base portion and top portion may have such a shape that a snapping action is obtained, the sealing means being provided by these snapping margins.
  • This snapping action is associated with a force which is directed over a strip shaped marginal portion of said top and base parts.
  • this snapping action does not cause any force directed over or parallel to the main portions of the base and top portions.
  • This embodiment is associated with a seal located in the neighbourhood of the snapping surfaces of the base portion or of the top portion an extremely good sealing of the interior volume of said tray is obtained.
  • the snapping margins will in this case be associated with inner or first sealing and snapping surfaces or regions of both the base and top portions and with outer or second sealing and snapping surfaces also of both the top and base.
  • snapping surfaces will the be angular and extend around the periphery of the top and base. Further it is preferred that the inner snapping parts of the base and the top and/or the outer snapping portions of the base part and the top part are mutually approximately or substantially parallel. It is a special advantage if this applies to the interior snapping surfaces and that these are flat and form an accute angle, slightly directed inwards relative to the main portion of the tray. This angle can have a deviation of 10" or somewhat more from a straight angle.
  • an elastical seal may be located in this case.
  • the terminating edge, which is bent inwards, of the top portion engages the seal or penetrates thereinto like a knife edge.
  • the outer sealing and snapping surface will then be a surface which is directed obliquely upwards and outwards directed and immediately connects to the recess, which is more or less rectangular and in which said elastic sealing is located.
  • This recess will then form a groove passing around the outer edge of the base and is directed outwards away from the centre of the tray.
  • This surface may preferably be somewhat concave, for instance have the shape of two flat surfaces nearly parallel and forming a small angle relative to each other.
  • the elastic sealing is mounted in its associated groove it is advantageous that it is well pressed down into this groove.
  • the tray seen from above, is realized having an exterior outline being convex and more or less curved.
  • said tray has as is conventional a substantially rectangular shape its long and short sides preferably are somewhat convex seen from above.
  • the sealing element may also be in the form of a strip of silicon rubber which in liquid form is pressed into the recess intended for the seal.
  • This sealing strip has preferably the same profile mentioned above applying to the angular fixed sealing strip.
  • the material of the seal is in this case preferably air hardening and has only hardened incompletely when said top portion of the tray is assembled to its proper place. Hereby it is achieved that the sharp edge of said top portion will more easily penetrate into and be surrounded by said sealing element and a still better sealing action may be obtained.
  • Fig. la shows the base part of a tray seen from above according to a first embodiment of the invention
  • Fig. lb shows a section of this base part
  • Figures 2a and 2b show a section in a larger scale of the marginal portion of the tray in Fig. 1 before and after installing the top part with preformed sealing strip
  • Figures 3a and 3b are similar to Figures 2a and 2b respectively with the sealing strip in the shape of a relatively slowly hardening elastical compound
  • Fig. 4 is similar to Figures 2b and 3b with a sealing compound pressed into the groove after assembling the top part,
  • Fig. 5 is similar to Figures 2b, 3b, and 4 not showing the sealing strip but showing optional bulbs for the positioning of the top part,
  • Figures 6a and 6b show the marginal portion of an alternative of the first embodiment of Figures la-5
  • Fig. 7 shows the main parts of a tray according to a second embodiment of the invention seen perspectively obliquely from above, where the different parts are separated from each other,
  • Fig. 8 shows the marginal portion of the base portion of the tray in Fig 6, seen from the side
  • Fig. 9 shows a section of the marginal portion of the top portion of the tray according to Fig. 6,
  • Fig. 10 shows a section of the marginal portion of the base part of the tray in Fig. 6,
  • Fig. 11 is a section of the marginal portion of the assembled tray in Fig. 6 and
  • Figures 12a and 12b are perspective views of a section of an embodiment of the sealing strip of the tray in Fig. 6 seen obliquely from above and fr below, respectively.
  • the tray according to the invention comprises a base part 1 which preferably has a generally rectangular shape seen from above, having rounde corners and the long and short sides of which may be slightly curved outwar from the centre of the tray.
  • the base part 1 comprises a flat main part 3 a a marginal portion 5 joined to the lateral edges of the base.
  • the marginal portion 5 is generally inclined upwards from the main part of the base and comprises as illustrated in the figures a first obliquely outwards extending portion 7 and a second outer portion 9 connected to said first portion 7.
  • a recess 11 is located in the region where the main part 3 of the base and the marginal portion 5 are connected or joined to each other.
  • This recess 11 has the shape of a groove extending along the border of the tray base 1. It may be shallow, that is have a width larger than its depth, and it generally has a bottom which is substantially flat and parallel to the main part 3. A hold down tongue or extension 15, 15', integral with the marginal portion 5, extends at least partly above said groove 11.
  • a sealing element is located which may be realized in different ways such as a preformed elastic strip 17, a sealing strip 17' applied in situ inside said groove 11 before assembling the tray and a sealing element 17" applied in said recess 11 after assembling .the tray.
  • the tray also comprises a top part 19, which in this embodiment is a substantially flat transparent sheet, for instance made of a suitable plastics material.
  • the shape of the top portion 9 is so adapted that it at least partly extends above the recess 11 to contact the sealing means 17,
  • the base portion 1 is usually made from a non transparent material, e.g. plastics.
  • a thin sheet 21 is intended to be placed on top of the flat main part 3 of the base portion 1 .
  • This sheet 21 may be made from paper or similar sheet material on which information, advertisements, pictures or similar things have been applied.
  • the assembly of the tray illustrated in Figures 2a and 2b is performed in the following way.
  • the sealing strip 17 is fitted into the recess 11 and then the sheet material 21 is placed on top of the main part 3 of the base 1.
  • the top part 3 is applied above the base part 1 and the thin sheet 21, and then the top portion 19 is pressed down, first in its centre and then at its borders.
  • the top portion 19 is made from a rather thin material with a thickness of about 0.5 to 0.7 mm, and its edges will snap down below the extension 15, 15', which is directed towards the centre of the tray.
  • the marginal portion of the top part 19 will contact the sealing element 17 and compress this. By this compression a sealing action is obtained at the lower marginal portion of the top part 19.
  • the sealing strip 17 may be provided with a thin tongue 23 and this tongue may in turn be provided with one or more sealing lips 25. Since the tongue 23 is located at the side of the sealing strip 17 facing the centre of the tray it will be bent down when the top par 19 is pressed down. The sealing lips 25 will then contact the lower surface of the top part 19.
  • the extension tongue 15 has, for a preformed endless flexible sealing element 17, see Figures 2a and 2b, a lower surface which slopes slightly downwards towards the centre of the tray. Its distance from the upper surfac of the sealing joint 17 is chosen in such a way that a sufficient elastic force will be produced by the sealing when the top part 19 has been mounted in its proper place below this extension 15.
  • the extension 15' mainly has the function of limiting the volume where the sealing material is to be laid. Therefore its shape is not critica and its lower surface may have a slope upwards toward the centre of the tray as illustrated in Figures la and 3a - 5.
  • the sealing strip 17 is a sealing strip applied in situ and made from e.g. silicon rubber.
  • B means of a dispensing gun having a nozzle suitably shaped the sealing 17' is pressed into the groove 11.
  • the sealing material is not hardened but will harden, when it has been applied, e.g. by contact with the air humidity or by means of heat or UV treatment.
  • the top part 19 of the tray is immediately placed, before the hardening of the sealing material, above the base part 1 and is pressed into its correct position. The edge of the top part 19 will then be snapped past the extension 15 and penetrate above the groove 11 and into the sealing material 17'. In this way the sealing compound will surrou the marginal portions of the lower and upper side and the edge portion of t top part 19.
  • a sealing compound is pressed into the strip shaped volume formed by the groove 11 and the space below the extension 15.
  • the sealing compound may consist of a hardening compound, e.g. silicon rubber. Enough material is pressed into this volume to surround the edge of the top part 1 and especially into contact with the lower and upper surfaces of the top 19.
  • a preformed sealing strip 17 may be used for another assembly of the top part onto the base part. If a sealing element is of the kind 17', 17'' hardened in situ it is removed from the groove 11.
  • bulbs 27 are shown which are placed at the side of said recess 11 remote from the centre of the tray. These bulb 27 may extend towards the edge of the top part 19 and are intended to locate this, especially when an in situ hardened sealing strip is used. These bulbs may be distributed evenly around the periphery of the tray, see Fig. la. Here is also shown cuts or slots 29 applied at the corners of the tray, and extending through the extention 15. In the alternative illustrated in Figures 6a and 6b the recess 11' is made deeper than in what is shown in Figures la - 5.
  • the outer or upper surface portion 9 of the base margin 5 has the shape of a snapping edge and has an upper flat, surface 31 substantially parallel to the flat main part 3.
  • the upper flat surface 31 is defined, in the direction towards the centre of the base part 1 by an inner snapping surface 33.
  • the snapping surface 33 is essentially flat and extends along an angle obliquely inwards towards the centre of the base part 1. Typically the snapping surface 33 extends along an angle of 70 to 80" relative to the base main part 3, the preferred angle being 80".
  • the flat top surface 31 in the middle of the snapping margin 9 is limited in the direction away from the centre of the base part 1 by an exterior surface 35 which is curved downwards and outwards.
  • the surface 35 terminates in a more or less sharp edge 37.
  • a very slightly concave surface 39 which slopes downwards and inwards and at its bottom is joined to a rectangular recess 41 having its walls essentially respectively parallel with and perpendicular to the upper 31 and lower 43 flat surfaces of the snapping margin 9.
  • a sealing element 45 is placed in this recess 41 .
  • the sealing element comprises an endless soft flexible rubber or elastomer strip.
  • This strip has an essentially - rectangular section, however, the outer sealing portion of the sealing element 41 may have a slope downwards and outwards and have a slightly concave shape.
  • the concave shape may be realized in the way that the outer sealing surface consists of two flat surfaces 47 and 49, the first and upper 47 of these surfaces forming a larger angle relative to the upper and lower lateral surfaces of the strip than the second and lower flat surface 49.
  • the sealing element 45 is substantially completely inserted into the recess 41 and normally does not extend from this recess. Below this recess the snappin margin 9 of the base portion has a curved portion 31 connecting to the mentioned lower flat surface 43 of the snapping margin 9. This lower flat surface 43 is essentially parallel to the upper flat surface 31. Further the top flat surface of the sealing element 45 is also completely inserted into the groove 41, this passing along the periphery of the base part 1.
  • the flat surface 43 which is essentially parallel to the upper flat surface 31 connects to the oblique part 7 of the marginal portion 5.
  • the top portion 53 of the tray has a lower surface with a shape complimentary to the upper surface of the base portion 1 except that portion of the top part is engaged with the sealing element 45.
  • the outermost edge portion of the top part is archedly curved inwards and terminates in a flat surface 57 parallel to the main part of the flat tray. In this way a sharp edge 59 is formed on the top part, this edge being directed towards th centre of the tray.
  • the assembly of the tray is made in the following way.
  • the sealing element 45 is supposed to be already placed in the recess 41.
  • this elastic sealing 45 is kept well retained inside the recess 41.
  • the top part 53 is placed on top of the base portion 1 together with the thin sheet 21 placed thereon, whereafter the marginal portion of the top part 53 is snapped over the snapping margin 9.
  • the inner terminating sharp edge 59 of the top portion is pressed into somewhere in the middle of the exterior surface of the sealing element 45.
  • the sharp edge 59 of the top part will sink somewhat into the exterior surface of the sealing strip 45 and until the exterior edge 45 of the top portion 53 by its inner side will engage a portion of the outer obliquely upwards directed surface 39. Then a slight gap is formed between the surface just above the outer edge 59 of the top part 53 and the, curved surface 39 of the snapping margin 9 of the base part. However, in this way a compressing action is obtained between the inner oblique surface 33 of the snapping margin 9 and the outer oblique surface 39. Due to this compressing action no forces are applied over the main part 3 of the base portion 1 or over the corresponding part of the top portion 53. Thus the compressing forces are only directed over the marginal portions.
  • the sealing element may comprise a preformed endless strip or a sealing strip applied in situ and may consist for instance of silicon rubber. It can be applied as is described above.
  • the sharp edge 59 of the top portion will penetrate as above into the sealing 45 and will be well surrounded by the sealing material .
  • the top part 39 is detached from the base 1, for instance as is described above for the first embodiment or by the procedure that the marginal portion of the top part is successively, along the periphery, detached from the marginal portion of the base part.
  • the sealing element 45 applied wet in situ has, as in the first embodiment, the advantage of providing an even more enhanced sealing action compared to a sealing element 45 comprising an endless flexible preformed rubber or elastomer strip.
  • the application of the pasty or liquid strip is more complicated and costly.
  • the tray according to the second embodiment according to the invention this was realized as an essentially rectangular tray having the dimensions 33 x 43 cm.
  • the snapping margin had a width of about 15 mm and the thickness of the base part at this marginal portion was mm.
  • the peripheral groove 41 of the base part 3 had a height of 2 mm.
  • th groove 41 a sealing strip was applied which had been injection moulded to a circular shape having a radius of 320 mm.
  • the sealing strip 25 had in an untensioned state a thickness of 2.1 mm and a largest width of 4.8 mm.
  • the base part 3 was injection moulded from polypropylene or polyvinylchloride a the top part 53 was injection moulded from a polycarbonate having a thickne of 1 mm.
  • the tray exposed an excellent sealing capability to water when tested in a modern dishwashing machine. A traction force of about 500 kp wa required to separate the top part from the base part when these had been assembled.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Sheet Holders (AREA)
  • Containers Having Bodies Formed In One Piece (AREA)
  • Closures For Containers (AREA)

Abstract

Est décrit un plateau dans lequel est destinée à être placée une feuille (21) comportant des informations, publicités ou images similaires. Le plateau comprend une partie de base (1) et une partie supérieure (19, 19', 53) entre lesquelles doit être placée ladite feuille informative ou la publicité. Un élément d'étanchéité (17, 17', 17'', 45) ou bande d'étanchéité est situé dans une rainure (11, 11', 41) au voisinage de la bordure de la partie de base (1). Cet élément d'étanchéité assure effectivement l'étanchéité du volume intérieur contre par exemple l'eau chaude utilisée dans un lave-vaisselle. La rainure (11, 11') peut être positionnée au niveau de la région reliant la portion plate principale (3) de la base (1) à la portion marginale inclinée (5) de la base. On utilise dans ce cas une partie supérieure (19) plate et transparente que l'on maintient en place au moyen d'un bord saillant vers l'intérieur (15, 15'). Dans une autre forme d'exécution, l'étanchéité est assurée par des surfaces d'étanchéité double (33, 37) obtenues lorsque la marge de la partie supérieure est conformée comme une rainure dirigée vers le bas et est comprimée pour enserrer la portion marginale supérieure (9) de la partie de base (1).
PCT/SE1989/000533 1988-09-30 1989-09-29 Plateau WO1990003140A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE8803482A SE465200B (sv) 1988-09-30 1988-09-30 Bricka
SE8803482-2 1988-09-30

Publications (1)

Publication Number Publication Date
WO1990003140A1 true WO1990003140A1 (fr) 1990-04-05

Family

ID=20373500

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE1989/000533 WO1990003140A1 (fr) 1988-09-30 1989-09-29 Plateau

Country Status (2)

Country Link
SE (1) SE465200B (fr)
WO (1) WO1990003140A1 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0673614A1 (fr) * 1994-03-24 1995-09-27 KÜHNENDAHL-DISPLAY GMBH & CO. KG Plateau pourvu d'une feuille de revêtement
WO1999029217A1 (fr) * 1997-11-21 1999-06-17 Giskeoedegaard Aage Plateau de service presentant une surface decouverte pour de la publicite
WO2002052996A3 (fr) * 2000-12-30 2002-11-07 Michael Daubenthaler Dispositif de plateau
US7633390B2 (en) 2002-07-03 2009-12-15 Securitypoint Holdings Llc Advertising trays for security screening
EP2353833A1 (fr) * 2010-02-10 2011-08-10 Rotho Kunststoff AG Coque en plastique
US9116513B2 (en) 2008-03-28 2015-08-25 Securitypoint Holdings, Inc. Methods and systems for efficient security screening
US9516460B2 (en) 2008-03-28 2016-12-06 Securitypoint Holdings Llc Systems and methods for security checkpoint condition information and sharing

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NO312653B1 (no) * 2000-08-22 2002-06-17 Brettcom As Eksponerings-/displaybrett

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2047835A (en) * 1934-12-04 1936-07-14 Harvey A Prew Tray and method of making the same
FR914076A (fr) * 1945-09-05 1946-09-27 Plateau de service
NL8005534A (nl) * 1980-10-07 1982-05-03 Franke Roestvrijstaal Nederlan Plaatvormig orgaan.

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2047835A (en) * 1934-12-04 1936-07-14 Harvey A Prew Tray and method of making the same
FR914076A (fr) * 1945-09-05 1946-09-27 Plateau de service
NL8005534A (nl) * 1980-10-07 1982-05-03 Franke Roestvrijstaal Nederlan Plaatvormig orgaan.

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0673614A1 (fr) * 1994-03-24 1995-09-27 KÜHNENDAHL-DISPLAY GMBH & CO. KG Plateau pourvu d'une feuille de revêtement
WO1999029217A1 (fr) * 1997-11-21 1999-06-17 Giskeoedegaard Aage Plateau de service presentant une surface decouverte pour de la publicite
WO2002052996A3 (fr) * 2000-12-30 2002-11-07 Michael Daubenthaler Dispositif de plateau
US7633390B2 (en) 2002-07-03 2009-12-15 Securitypoint Holdings Llc Advertising trays for security screening
US9116513B2 (en) 2008-03-28 2015-08-25 Securitypoint Holdings, Inc. Methods and systems for efficient security screening
US9516460B2 (en) 2008-03-28 2016-12-06 Securitypoint Holdings Llc Systems and methods for security checkpoint condition information and sharing
EP2353833A1 (fr) * 2010-02-10 2011-08-10 Rotho Kunststoff AG Coque en plastique

Also Published As

Publication number Publication date
SE8803482D0 (sv) 1988-09-30
SE465200B (sv) 1991-08-12
SE8803482L (sv) 1990-03-31

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