CA1075646A - Food container - Google Patents
Food containerInfo
- Publication number
- CA1075646A CA1075646A CA286,755A CA286755A CA1075646A CA 1075646 A CA1075646 A CA 1075646A CA 286755 A CA286755 A CA 286755A CA 1075646 A CA1075646 A CA 1075646A
- Authority
- CA
- Canada
- Prior art keywords
- lip
- container
- side walls
- side wall
- base surface
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D1/00—Containers having bodies formed in one piece, e.g. by casting metallic material, by moulding plastics, by blowing vitreous material, by throwing ceramic material, by moulding pulped fibrous material, by deep-drawing operations performed on sheet material
- B65D1/34—Trays or like shallow containers
- B65D1/36—Trays or like shallow containers with moulded compartments or partitions
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D11/00—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, components made wholly or mainly of plastics material
- B65D11/18—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, components made wholly or mainly of plastics material collapsible, i.e. with walls hinged together or detachably connected
- B65D11/1866—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, components made wholly or mainly of plastics material collapsible, i.e. with walls hinged together or detachably connected with detachable components
- B65D11/188—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, components made wholly or mainly of plastics material collapsible, i.e. with walls hinged together or detachably connected with detachable components the container being formed by two mating halves
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D81/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
- B65D81/38—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents with thermal insulation
- B65D81/3813—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents with thermal insulation rigid container being in the form of a box, tray or like container
- B65D81/3816—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents with thermal insulation rigid container being in the form of a box, tray or like container formed of foam material
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Ceramic Engineering (AREA)
- Packages (AREA)
- Containers Having Bodies Formed In One Piece (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
This invention discloses a novel food container for the storage and transport of food, particularly hot food such as pizza. It comprises an identical upper and lower portion, each portion having a flat, base surface, outwardly extending side walls with a circumferential lip therearound. A locking means is carried on the lip to releasably lock the upper and lower portions together. A plurality of vertical honeycombs are on the interior of the base surface and a plurality of buttresses are found in the interior side walls. The device is preferably made of an expanded material such as polystyrene.
The device only requires a single mould to manufacture it and is an efficient, inexpensive and strong insulating container which has eliminated the problem of condensation within the containers of the prior art.
This invention discloses a novel food container for the storage and transport of food, particularly hot food such as pizza. It comprises an identical upper and lower portion, each portion having a flat, base surface, outwardly extending side walls with a circumferential lip therearound. A locking means is carried on the lip to releasably lock the upper and lower portions together. A plurality of vertical honeycombs are on the interior of the base surface and a plurality of buttresses are found in the interior side walls. The device is preferably made of an expanded material such as polystyrene.
The device only requires a single mould to manufacture it and is an efficient, inexpensive and strong insulating container which has eliminated the problem of condensation within the containers of the prior art.
Description
This inven-tion relates generally to containers and more particularly to a novel container suitablc ~or storing and transporting hot food. It has particular suitability as a pizza container.
In the past, ho~ food was stored and transported in - ordinary cardboard boxes~ Needless to say, these containers presented many problems. When hot food was placed in these containers, a rapid and large heat loss occurred and as well, if the food was to any degree fluid or liquid, this liquid would run off the food when the container was being trans-ported and cause the container to be soggy or e~en fall apart. When the food was delivered to its ultimate destination, it would arrive cold and in some instances, in a broken container.
Moxe recently, containers have been constructea o~
diffexent designs in an attempt to overcome these pxoblems~ '~
Also/ different materials have been uti~ized in the construction of the containers in an attempt to overcome the prvble~s of breakage of the container.
The prior art has attempted to overcome the ~ollowing basic problems:
1. insulating the food within the container;
In the past, ho~ food was stored and transported in - ordinary cardboard boxes~ Needless to say, these containers presented many problems. When hot food was placed in these containers, a rapid and large heat loss occurred and as well, if the food was to any degree fluid or liquid, this liquid would run off the food when the container was being trans-ported and cause the container to be soggy or e~en fall apart. When the food was delivered to its ultimate destination, it would arrive cold and in some instances, in a broken container.
Moxe recently, containers have been constructea o~
diffexent designs in an attempt to overcome these pxoblems~ '~
Also/ different materials have been uti~ized in the construction of the containers in an attempt to overcome the prvble~s of breakage of the container.
The prior art has attempted to overcome the ~ollowing basic problems:
1. insulating the food within the container;
2. detarioration of the container due to lea~age from -i the food;
.
.
3. necessity of different moulds for the cover and the basé of the container;
4. maint~ining the necessary rigidity of construction; i~
5. preventing condensation inside the container and subse~uent absorption of moisture by the food;
6. high cost of manufacture;
7. space necessary for storage ~f the containexs.
: :
.
. ~
1~17S~;9L6 The devices of the prior art have successfully over~
come some of the a~orenoted problems but no device has been able to overcome all of the aforenoted prohlems~
The insulating food container described in Uni*ed States Patent Number 3,484,015 issued to Rowan describes an insulated food container manufactured from pressed polys~yrene beads which ~tilize an upper portion sealed to a bottom portion. However, the device of Rowan does not provide adequate circulation of air within the container to prevent the contents thereof from becoming soggy nor does this device have sufficient support to withstand the abuse suffered by containers when used, for example, for deliveries o~ such foods as pizza.
Examples of other devices disclosed are seen in United States Patents Number 3,613,933 issued to Pilz on October 19, 1971; Number 3,75~,640 issued to Bridges on August 28, 1973 and Number 3,835,281 issued to Mannix on September 10, 1974. However, none of these device~ disclose a construction which allows adequate circulation of air, strength of construction and efficiency of manufacture and low cost as provided by the device of the present invention.
The present invention at least partially overcomes these disad~antages by providing a novel container for the storage and transport of food which comprises identical upper and lower sections which may be releasably secured to each other. The inner surface of the sections include a honeycomb con~iguration and support buttresses are provided ; on the interior surace of each side wall to increase the strength of the containerO
To this end, in one of its aspects, the invention .' ' . . .
1 ~ ~ 2 ~
. .
~L~'75~46 provides an insulated food container for the storage and transport of food comprising: ~, (a) an upper and lower portion, said upper and said lower portions being identical, each said portion comprising:
(,i), a flat base surface (ii~ outwardly extending side walls, and (iii~ a circumferential lip around the top of ; said side walls;
(b) a locking means adapted to releasably lock said upper and said lower portions together~
(cl a plurality of vertical honeycombs on the interior surface of said base surface upstanding for a minor proport.ion of the depth of said portion, ', (.d) a plurality of buttresses,on the interior of each side wall.
In another of its aspects, the invention provides a ~ "
. polystyrene insulated food container for the storage and ~.,' transport of food comprising: :
(a) an upper and a lower portion, said upper and ~ .
said lower portions being identical, each portion comprising~
(i~ a flat base surface '~.
outwardly extending side walls, and (iiil a circumferential lip around the top of', , said side walls;
(b~ a locking means adapted to releasably lock said ' upper and said lower portions together, said locking means comprising a protrusion extending upwardly from the top surace o~ said lip about one-half the circumference of said lip and a complementary recessed portion in the 3a remaining one-half portion of the circumferencle of sai.d :; 1 ip;
- 3 ~ '' l .
.
. ~ , ~ .. . . . . .
:~0756~6 tc~ a plurality of vertical honeycombs on the interior surface of said base surface upstanding for a minor proportion of the depth of said portion, and (d~ a plurality of buttresses on the interior of each side wall, each buttress extending the height of the side wall and the base of each buttress being adjacent each honeycomb adjacent the side wall.
The invention is described further, by way of illus-tration with reerence to the accompanying drawings, in which:
Figure 1 is a front perspective view of a container of the present invention;
. FLgure 2 is a side view of a stack of the component parts of the present invention;
Figure 3 is a top perspecti~e view of a bottom unit of the container; and Figure 4 is a side sectional v1ew through the side wall of a unit.
Referring first to Figure 1, there is shown and disclosed a perspective view of the novel food container of the present ihvention generally indicated as 2 when in the assembled position ready for use. The container, when assembled, comprises an upper portion 4 and a lower portion ~. :
- - The two portions are identical and as shown in Figure . 2, each comprises a base 8 which is comprised of a flat suxface 12 and side walls 14, and a circumferential lip 10 l on the upper edge of the side walls 14. Each portion ¦ resembles a shallow tray ,1 .
3n -~L075~46 1 and is open at the top surface. When assembled as shown in Figure 1, the circumferential lip on two parts are placed in contact with each other tas explained her~einafter) thereby achieved a completely closed container 2 as shown in Figure 1.
Since each portion is identical to the other portion, a series of these parts may be conveniently stacked as shown in Figure 2 of the drawings. This reduces considerably the space required to store the parts of the containers prior to their use.
Referring now to Figure 3, there is shown a top perspective view of one portion of the container 2.
Each portion comprises a flat, bottom surface 12 with outwardly sloping walls 14 which terminate in a circum~erential lip 10. Lip 10 extends completely about the periphery of the container 2 and carries on it, a releasable locking means adapted to releasably lock two parts together. An e~ample of a suitable locking means is shown in Figure 3 and includes a contlnuous recessed rectangular slot or groove 16 in one-half of the cir-cumference of the lip and for the remaining one-hal~ portion, 2~ a continuous, upwardly projec~ing protrusion or tongue 18 is dispersed.
The bottom wall 12 of the container carries thereon, a serles of honeycomb raised portions 20 which are included for both strength and circulation purposes. A series of buttresses .
22 are located flush on the inner surface of the walls 14 and correspond in the preferred embodiment, to ~he area of the honeycomb in proximity to the wall 14. A side sectional view : through a side wall 14 is seen in Figure 4.
The device of the present invention effectlvely overcomes the problems associated with the prior art in a novel and unlque ; manner.
7~
1 It is necessary to maintain the heat within the container to provide an effective seal about the container.
The need for this seal must of course be balanced by a relatively simple and inexpensive seal to justify the use thereof in view of the cost of manufacturing the container.
The present invention achieves this effective seal by providing the protrusion or tongue 18 about one-half the periphery of the lip 10 and the recessed portion 16 or groove about the remaining one-half portion of the lip 10. The tongue is adapted to be fitted into the groove when the container is assembled to releasably secure the top portion 4 to the bottom portion 6 of the container. The tonyue 18 and the groove 16 are each, about exactly one-half the periphery of the lip 10. Thus, when the two portions of the container are placed, one above the other, the top inverted and secured to the bottom, the tongue 18 ~its exactly within the recessed portion or groove 16. Thus, an exacting match is achieved and a 100% seal is formed.
Different variations of this tongue and groove design 23 may be used and still ~all within the scope and spirit of this invention. For example, the locking or sealing device may include a double tongue construction with a corresponding double groove receptacle.
The bottom surface 12 of the device carries thereof a : . .
hon~ycomb for strengthening purposes and also to retain h~at in the container~ The size of the honeycomb may vary but preferably, is approximately one-quarter inch high with a chamber diameter of three-eighths~ of an inch and a wall thickness of one-eighth of an inch for a container having a diameter of fourteen inches.
, :; ,~ ,. ".: .' ' :
~7~
1 The design of -the honeycombs within the container and the sealing of the upper and the lower portions of the container together effectively prevent condensation within the container when hot food is placed therein. As noted before, one of the problems associated with the devices of the prior art has been the condensation of moisture within the fil:Led container and subsequent absorption of this moisture by the food product inside thereby resulting in the deterioration and spoilage of the food.
In order to prevent this condensation, there must be ~ sufficient air flow within the container but no air flow to the outside. The internal air flow must be such to circulate around the contents of the container but not be allowed to exit from the container and an air flow into the container must be prevented.
The depth o-f the honeycombs in the device of the present invention allows for such internal air 10w and the sealing of the top and bottom portions prevents any air flow into or out of the con-tainer. Thus, condensation o moisture onto the enclosed food is effectively prevented while maintaining the temperatura of the food inside the container.
2~
The container of the present invention may be manu-. .
factured of a suitable, lightweight and inexpensive plastic material. While not restricted thereto, a particular suitable material is polystyrene. Expanded foams with high insulating properties are preferred rather than compressed materials~
The strength of the present device is increased remarkably over the devices of the prior art. It is known that one of the major problems with liyhtweight plas-tic devices is that these containers cannot withstand a large internal weight and also, cannot withstand a large compressive external . .
, ' "
' ' , ~: , . . , ' -7564~
1 force applied thereto. I-t is therefore essential to manufacture a device which will be able to withstand both external and internal ~orces. The combinatlon of the honeycombs 20 and the buttresses 22 effectively overcome this problem.
A large internal weight or force may be sustained by the honeyco~b design and in combination with the buttresses 22 on the side walls, the device is able to withstand large externally applied compression. Thus, a larger container may be constructed than those o the prior art and these larger containers withstand rough handling and treatment without suffering any damage.
The construction and design of the containers of the present invention also allow, if desired, a square or rectangular container to be constructed. In the past, when a larger container was required, it was manuactured in a round shape thus resulting in considerable wastage of materials and increased cost.
If desired, a separate latching or locking de~ice may be used with the container. The present disclosure reers to a tongue and groove mechanism but it is understood that similar loc]c-ing mechanisms may also be used such as c~mpl3mèntary rivett ~ sysbems.
A particular advantage of the device of the present invention is that only one mould is necessary during the manu-facturing thereoE. The top and bottom portions of the container are identical thus reducing the cost of production Also, the problems of storage of these containers has been reduced. Since the top and bottom of each container is identical and of the same shape as noted hereinbefore, they may be stacked in a single pile thereby helping to reduce the amount of space required for storage of the containers.
, ` ~ :.
.: .
_ 8 ': :
' ~ , .~ .. . , . ' :
.. . . . . : .
~756~i 1 The device of the present invention has successfully overcome many of the problems of the prior art. The con-tainer effectively maintains the temperature of the food contained therein and by its construction, will not deteriorate if it becomes wet. The top and bottom portions are iden-tical and thus, only one mould is necessary to manufacture all the parts of the container. The container is remarkably strong due to the honeycombs and the buttresses and condensation is prevented within the container eliminating the spoilage of the food within the container. The cost of production is much lower than previous containers and as noted before, it may be sta~ked quite conveniently thereby reducing storage space required.
Although the disclosure describes and illustrates a preferred embodiment oE the invention, it is to be understood the invention is not restricted to this particular embodiment.
., .
~0 `~ " .
:
~ 30 g _ '' .
: .
' .
: :
.
. ~
1~17S~;9L6 The devices of the prior art have successfully over~
come some of the a~orenoted problems but no device has been able to overcome all of the aforenoted prohlems~
The insulating food container described in Uni*ed States Patent Number 3,484,015 issued to Rowan describes an insulated food container manufactured from pressed polys~yrene beads which ~tilize an upper portion sealed to a bottom portion. However, the device of Rowan does not provide adequate circulation of air within the container to prevent the contents thereof from becoming soggy nor does this device have sufficient support to withstand the abuse suffered by containers when used, for example, for deliveries o~ such foods as pizza.
Examples of other devices disclosed are seen in United States Patents Number 3,613,933 issued to Pilz on October 19, 1971; Number 3,75~,640 issued to Bridges on August 28, 1973 and Number 3,835,281 issued to Mannix on September 10, 1974. However, none of these device~ disclose a construction which allows adequate circulation of air, strength of construction and efficiency of manufacture and low cost as provided by the device of the present invention.
The present invention at least partially overcomes these disad~antages by providing a novel container for the storage and transport of food which comprises identical upper and lower sections which may be releasably secured to each other. The inner surface of the sections include a honeycomb con~iguration and support buttresses are provided ; on the interior surace of each side wall to increase the strength of the containerO
To this end, in one of its aspects, the invention .' ' . . .
1 ~ ~ 2 ~
. .
~L~'75~46 provides an insulated food container for the storage and transport of food comprising: ~, (a) an upper and lower portion, said upper and said lower portions being identical, each said portion comprising:
(,i), a flat base surface (ii~ outwardly extending side walls, and (iii~ a circumferential lip around the top of ; said side walls;
(b) a locking means adapted to releasably lock said upper and said lower portions together~
(cl a plurality of vertical honeycombs on the interior surface of said base surface upstanding for a minor proport.ion of the depth of said portion, ', (.d) a plurality of buttresses,on the interior of each side wall.
In another of its aspects, the invention provides a ~ "
. polystyrene insulated food container for the storage and ~.,' transport of food comprising: :
(a) an upper and a lower portion, said upper and ~ .
said lower portions being identical, each portion comprising~
(i~ a flat base surface '~.
outwardly extending side walls, and (iiil a circumferential lip around the top of', , said side walls;
(b~ a locking means adapted to releasably lock said ' upper and said lower portions together, said locking means comprising a protrusion extending upwardly from the top surace o~ said lip about one-half the circumference of said lip and a complementary recessed portion in the 3a remaining one-half portion of the circumferencle of sai.d :; 1 ip;
- 3 ~ '' l .
.
. ~ , ~ .. . . . . .
:~0756~6 tc~ a plurality of vertical honeycombs on the interior surface of said base surface upstanding for a minor proportion of the depth of said portion, and (d~ a plurality of buttresses on the interior of each side wall, each buttress extending the height of the side wall and the base of each buttress being adjacent each honeycomb adjacent the side wall.
The invention is described further, by way of illus-tration with reerence to the accompanying drawings, in which:
Figure 1 is a front perspective view of a container of the present invention;
. FLgure 2 is a side view of a stack of the component parts of the present invention;
Figure 3 is a top perspecti~e view of a bottom unit of the container; and Figure 4 is a side sectional v1ew through the side wall of a unit.
Referring first to Figure 1, there is shown and disclosed a perspective view of the novel food container of the present ihvention generally indicated as 2 when in the assembled position ready for use. The container, when assembled, comprises an upper portion 4 and a lower portion ~. :
- - The two portions are identical and as shown in Figure . 2, each comprises a base 8 which is comprised of a flat suxface 12 and side walls 14, and a circumferential lip 10 l on the upper edge of the side walls 14. Each portion ¦ resembles a shallow tray ,1 .
3n -~L075~46 1 and is open at the top surface. When assembled as shown in Figure 1, the circumferential lip on two parts are placed in contact with each other tas explained her~einafter) thereby achieved a completely closed container 2 as shown in Figure 1.
Since each portion is identical to the other portion, a series of these parts may be conveniently stacked as shown in Figure 2 of the drawings. This reduces considerably the space required to store the parts of the containers prior to their use.
Referring now to Figure 3, there is shown a top perspective view of one portion of the container 2.
Each portion comprises a flat, bottom surface 12 with outwardly sloping walls 14 which terminate in a circum~erential lip 10. Lip 10 extends completely about the periphery of the container 2 and carries on it, a releasable locking means adapted to releasably lock two parts together. An e~ample of a suitable locking means is shown in Figure 3 and includes a contlnuous recessed rectangular slot or groove 16 in one-half of the cir-cumference of the lip and for the remaining one-hal~ portion, 2~ a continuous, upwardly projec~ing protrusion or tongue 18 is dispersed.
The bottom wall 12 of the container carries thereon, a serles of honeycomb raised portions 20 which are included for both strength and circulation purposes. A series of buttresses .
22 are located flush on the inner surface of the walls 14 and correspond in the preferred embodiment, to ~he area of the honeycomb in proximity to the wall 14. A side sectional view : through a side wall 14 is seen in Figure 4.
The device of the present invention effectlvely overcomes the problems associated with the prior art in a novel and unlque ; manner.
7~
1 It is necessary to maintain the heat within the container to provide an effective seal about the container.
The need for this seal must of course be balanced by a relatively simple and inexpensive seal to justify the use thereof in view of the cost of manufacturing the container.
The present invention achieves this effective seal by providing the protrusion or tongue 18 about one-half the periphery of the lip 10 and the recessed portion 16 or groove about the remaining one-half portion of the lip 10. The tongue is adapted to be fitted into the groove when the container is assembled to releasably secure the top portion 4 to the bottom portion 6 of the container. The tonyue 18 and the groove 16 are each, about exactly one-half the periphery of the lip 10. Thus, when the two portions of the container are placed, one above the other, the top inverted and secured to the bottom, the tongue 18 ~its exactly within the recessed portion or groove 16. Thus, an exacting match is achieved and a 100% seal is formed.
Different variations of this tongue and groove design 23 may be used and still ~all within the scope and spirit of this invention. For example, the locking or sealing device may include a double tongue construction with a corresponding double groove receptacle.
The bottom surface 12 of the device carries thereof a : . .
hon~ycomb for strengthening purposes and also to retain h~at in the container~ The size of the honeycomb may vary but preferably, is approximately one-quarter inch high with a chamber diameter of three-eighths~ of an inch and a wall thickness of one-eighth of an inch for a container having a diameter of fourteen inches.
, :; ,~ ,. ".: .' ' :
~7~
1 The design of -the honeycombs within the container and the sealing of the upper and the lower portions of the container together effectively prevent condensation within the container when hot food is placed therein. As noted before, one of the problems associated with the devices of the prior art has been the condensation of moisture within the fil:Led container and subsequent absorption of this moisture by the food product inside thereby resulting in the deterioration and spoilage of the food.
In order to prevent this condensation, there must be ~ sufficient air flow within the container but no air flow to the outside. The internal air flow must be such to circulate around the contents of the container but not be allowed to exit from the container and an air flow into the container must be prevented.
The depth o-f the honeycombs in the device of the present invention allows for such internal air 10w and the sealing of the top and bottom portions prevents any air flow into or out of the con-tainer. Thus, condensation o moisture onto the enclosed food is effectively prevented while maintaining the temperatura of the food inside the container.
2~
The container of the present invention may be manu-. .
factured of a suitable, lightweight and inexpensive plastic material. While not restricted thereto, a particular suitable material is polystyrene. Expanded foams with high insulating properties are preferred rather than compressed materials~
The strength of the present device is increased remarkably over the devices of the prior art. It is known that one of the major problems with liyhtweight plas-tic devices is that these containers cannot withstand a large internal weight and also, cannot withstand a large compressive external . .
, ' "
' ' , ~: , . . , ' -7564~
1 force applied thereto. I-t is therefore essential to manufacture a device which will be able to withstand both external and internal ~orces. The combinatlon of the honeycombs 20 and the buttresses 22 effectively overcome this problem.
A large internal weight or force may be sustained by the honeyco~b design and in combination with the buttresses 22 on the side walls, the device is able to withstand large externally applied compression. Thus, a larger container may be constructed than those o the prior art and these larger containers withstand rough handling and treatment without suffering any damage.
The construction and design of the containers of the present invention also allow, if desired, a square or rectangular container to be constructed. In the past, when a larger container was required, it was manuactured in a round shape thus resulting in considerable wastage of materials and increased cost.
If desired, a separate latching or locking de~ice may be used with the container. The present disclosure reers to a tongue and groove mechanism but it is understood that similar loc]c-ing mechanisms may also be used such as c~mpl3mèntary rivett ~ sysbems.
A particular advantage of the device of the present invention is that only one mould is necessary during the manu-facturing thereoE. The top and bottom portions of the container are identical thus reducing the cost of production Also, the problems of storage of these containers has been reduced. Since the top and bottom of each container is identical and of the same shape as noted hereinbefore, they may be stacked in a single pile thereby helping to reduce the amount of space required for storage of the containers.
, ` ~ :.
.: .
_ 8 ': :
' ~ , .~ .. . , . ' :
.. . . . . : .
~756~i 1 The device of the present invention has successfully overcome many of the problems of the prior art. The con-tainer effectively maintains the temperature of the food contained therein and by its construction, will not deteriorate if it becomes wet. The top and bottom portions are iden-tical and thus, only one mould is necessary to manufacture all the parts of the container. The container is remarkably strong due to the honeycombs and the buttresses and condensation is prevented within the container eliminating the spoilage of the food within the container. The cost of production is much lower than previous containers and as noted before, it may be sta~ked quite conveniently thereby reducing storage space required.
Although the disclosure describes and illustrates a preferred embodiment oE the invention, it is to be understood the invention is not restricted to this particular embodiment.
., .
~0 `~ " .
:
~ 30 g _ '' .
: .
' .
Claims (10)
1. An insulated food container for the storage and transport of food comprising:
(a) an upper and lower portion, said upper and said lower portions being identical, each said portion comprising:
(i) a flat base surface (ii) outwardly extending side walls, and (iii) a circumferential lip around the top of said side walls;
(b) a locking means adapted to releasably lock said upper and said lower portions together, (c) a plurality of vertical honeycombs on the interior surface of said base surface upstanding for a minor proportion of the depth of said portion, (d) a plurality of buttresses on the interior of each side wall.
(a) an upper and lower portion, said upper and said lower portions being identical, each said portion comprising:
(i) a flat base surface (ii) outwardly extending side walls, and (iii) a circumferential lip around the top of said side walls;
(b) a locking means adapted to releasably lock said upper and said lower portions together, (c) a plurality of vertical honeycombs on the interior surface of said base surface upstanding for a minor proportion of the depth of said portion, (d) a plurality of buttresses on the interior of each side wall.
2. An insulated food container as claimed in claim 1 wherein said locking means comprises a protrusion extending upwardly from the top surface of said lip about one-half of the circumference of said lip and a complementary recessed portion in the remaining one-half portion of the circumference of said lip.
3. An insulated food container as claimed in claims 1 or 2 wherein each buttress extends the height of the side wall.
4. An insulated food container as claimed in claims 1 or 2 wherein each buttress extends from the bottom of the side wall adjacent each honeycomb upwards from the height of the side wall.
5. An insulated food container as claimed in claims 1 or 2 wherein the height of each honeycomb is approximately one-quarter inch with a chamber diameter of three-eighths inch.
6. An insulated food container as claimed in claim 1 wherein the container is made of an expanded material.
7. An insulated food container as claimed in claim 6 wherein said container is made of polystyrene.
8. An insulated, hermetically-sealable, thin-walled food container for the storage and transport of food, comprising:
(a) an upper portion and a lower portion, said upper and said lower portions being identical, each said portion comprising:
(i) a thin-walled flat base surface, (ii) thin, outwardly-extending side walls, and (iii) a circumferential lip around the top of said side walls;
(b) locking means adapted to releasably and hermetically lock said upper and lower portions together, (c) a plurality of elongate wall members integral with and upstanding from the interior surface of said base surface, each of said plurality of wall members being integrally joined at each end thereof to two others of said wall members to define a regular pattern of hexagonally-shaped recesses upstanding from said base surface, except for said wall members immediately adjacent said side wall which are joined to each other at each end and from the outer perimeter of said regular pattern of recesses, and (d) a plurality of vertical elongate parallel ribs integral with and extending from the interior of each side wall to impart strength thereto, said ribs extending downwardly into integral join with the integrally-joined ends of said perimeter-forming wall members adjacent said side walls.
(a) an upper portion and a lower portion, said upper and said lower portions being identical, each said portion comprising:
(i) a thin-walled flat base surface, (ii) thin, outwardly-extending side walls, and (iii) a circumferential lip around the top of said side walls;
(b) locking means adapted to releasably and hermetically lock said upper and lower portions together, (c) a plurality of elongate wall members integral with and upstanding from the interior surface of said base surface, each of said plurality of wall members being integrally joined at each end thereof to two others of said wall members to define a regular pattern of hexagonally-shaped recesses upstanding from said base surface, except for said wall members immediately adjacent said side wall which are joined to each other at each end and from the outer perimeter of said regular pattern of recesses, and (d) a plurality of vertical elongate parallel ribs integral with and extending from the interior of each side wall to impart strength thereto, said ribs extending downwardly into integral join with the integrally-joined ends of said perimeter-forming wall members adjacent said side walls.
9. A polystyrene insulated food container for the storage and transport of food comprising:
(a) an upper and a lower portion, said upper and said lower portions being identical, each portion comprising:
(i) a flat base surface (ii) outwardly extending side walls, and (iii) a circumferential lip around the top of said side walls;
(b) a locking means adapted to releasably lock said upper and said lower portions together, said locking means comprising a protrusion extending from the top surface of said lip about one-half the circumference of said lip and a complementary recessed portion in the remaining one-half portion of the circumference of said lip;
(c) a plurality of vertical honeycombs on the interior surface of said base surface upstanding for a minor proportion of the depth of said portion, and (d) a plurality of buttresses on the interior of each side wall, each buttress extending the height of the side wall and the base of each buttress being adjacent each honeycomb adjacent the side wall.
(a) an upper and a lower portion, said upper and said lower portions being identical, each portion comprising:
(i) a flat base surface (ii) outwardly extending side walls, and (iii) a circumferential lip around the top of said side walls;
(b) a locking means adapted to releasably lock said upper and said lower portions together, said locking means comprising a protrusion extending from the top surface of said lip about one-half the circumference of said lip and a complementary recessed portion in the remaining one-half portion of the circumference of said lip;
(c) a plurality of vertical honeycombs on the interior surface of said base surface upstanding for a minor proportion of the depth of said portion, and (d) a plurality of buttresses on the interior of each side wall, each buttress extending the height of the side wall and the base of each buttress being adjacent each honeycomb adjacent the side wall.
10. A polystyrene insulated hermetically-sealable, thin-walled food container for the storage and transport of food, comprising:
(a) an upper portion and a lower portion, said upper and said lower portions being identical, each said portion comprising:
(i) a thin-walled flat base surface, (ii) thin outwardly-extending side walls, and (iii) a circumferential lip around the top of said side walls;
(b) locking means adapted to releasably and hermetically lock said upper and said lower portions to-gether, said locking means comprising a protrusion extending upwardly from the top surface of said lip about one-half the circumference of said lip and a complementary recessed portion in the remaining one-half portion of the circumference of said lip;
(c) a plurality of elongate wall members integral with and upstanding from the interior surface of said base surface, each of said plurality of wall members being integrally joined at each end thereof to two others of said wall members to define a regular pattern of hexagonally-shaped recesses upstanding from said base surface, except for said wall members immediately adjacent said side wall which are joined to each other at each end and form the outer perimeter of said regular pattern of recesses, and (d) a plurality of vertical elongate parallel ribs integral with and extending from the interior of each side wall to impart strength thereto, each rib extending the height of the side wall and downwardly into integral join with the integrally-joined ends of said perimeter-forming wall members adjacent said side walls.
(a) an upper portion and a lower portion, said upper and said lower portions being identical, each said portion comprising:
(i) a thin-walled flat base surface, (ii) thin outwardly-extending side walls, and (iii) a circumferential lip around the top of said side walls;
(b) locking means adapted to releasably and hermetically lock said upper and said lower portions to-gether, said locking means comprising a protrusion extending upwardly from the top surface of said lip about one-half the circumference of said lip and a complementary recessed portion in the remaining one-half portion of the circumference of said lip;
(c) a plurality of elongate wall members integral with and upstanding from the interior surface of said base surface, each of said plurality of wall members being integrally joined at each end thereof to two others of said wall members to define a regular pattern of hexagonally-shaped recesses upstanding from said base surface, except for said wall members immediately adjacent said side wall which are joined to each other at each end and form the outer perimeter of said regular pattern of recesses, and (d) a plurality of vertical elongate parallel ribs integral with and extending from the interior of each side wall to impart strength thereto, each rib extending the height of the side wall and downwardly into integral join with the integrally-joined ends of said perimeter-forming wall members adjacent said side walls.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA286,755A CA1075646A (en) | 1977-09-14 | 1977-09-14 | Food container |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA286,755A CA1075646A (en) | 1977-09-14 | 1977-09-14 | Food container |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1075646A true CA1075646A (en) | 1980-04-15 |
Family
ID=4109533
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA286,755A Expired CA1075646A (en) | 1977-09-14 | 1977-09-14 | Food container |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1075646A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4883195A (en) * | 1988-11-02 | 1989-11-28 | Restaurant Technology, Inc. | Pizza container |
| US4951866A (en) * | 1988-11-07 | 1990-08-28 | Restaurant Technology, Inc. | Food container and method |
| US5012971A (en) * | 1988-11-07 | 1991-05-07 | Restaurant Technology, Inc. | Food container and method |
| JP2011073689A (en) * | 2009-09-29 | 2011-04-14 | Sekisui Plastics Co Ltd | Distribution container |
| ITTO20111054A1 (en) * | 2011-11-16 | 2013-05-17 | Pea & Promoplast S R L | FOOD CONTAINER |
-
1977
- 1977-09-14 CA CA286,755A patent/CA1075646A/en not_active Expired
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4883195A (en) * | 1988-11-02 | 1989-11-28 | Restaurant Technology, Inc. | Pizza container |
| US4951866A (en) * | 1988-11-07 | 1990-08-28 | Restaurant Technology, Inc. | Food container and method |
| US5012971A (en) * | 1988-11-07 | 1991-05-07 | Restaurant Technology, Inc. | Food container and method |
| JP2011073689A (en) * | 2009-09-29 | 2011-04-14 | Sekisui Plastics Co Ltd | Distribution container |
| ITTO20111054A1 (en) * | 2011-11-16 | 2013-05-17 | Pea & Promoplast S R L | FOOD CONTAINER |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |