US20070261610A1 - Skid support for portable structures - Google Patents
Skid support for portable structures Download PDFInfo
- Publication number
- US20070261610A1 US20070261610A1 US11/433,762 US43376206A US2007261610A1 US 20070261610 A1 US20070261610 A1 US 20070261610A1 US 43376206 A US43376206 A US 43376206A US 2007261610 A1 US2007261610 A1 US 2007261610A1
- Authority
- US
- United States
- Prior art keywords
- platform
- runner
- sidewalls
- runners
- wear
- 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.)
- Abandoned
Links
Images
Classifications
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
- A47B91/00—Feet for furniture in general
- A47B91/005—Support bases
-
- 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
- B65D19/00—Pallets or like platforms, with or without side walls, for supporting loads to be lifted or lowered
- B65D19/0004—Rigid pallets without side walls
- B65D19/0006—Rigid pallets without side walls the load supporting surface being made of a single element
- B65D19/003—Rigid pallets without side walls the load supporting surface being made of a single element forming discontinuous or non-planar contact surfaces
- B65D19/0042—Rigid pallets without side walls the load supporting surface being made of a single element forming discontinuous or non-planar contact surfaces the base surface being made of more than one element
- B65D19/0046—Rigid pallets without side walls the load supporting surface being made of a single element forming discontinuous or non-planar contact surfaces the base surface being made of more than one element forming discontinuous or non-planar contact surfaces
- B65D19/0051—Rigid pallets without side walls the load supporting surface being made of a single element forming discontinuous or non-planar contact surfaces the base surface being made of more than one element forming discontinuous or non-planar contact surfaces and each contact surface having a discrete foot-like shape
-
- 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
- B65D2519/00—Pallets or like platforms, with or without side walls, for supporting loads to be lifted or lowered
- B65D2519/00004—Details relating to pallets
- B65D2519/00009—Materials
- B65D2519/00014—Materials for the load supporting surface
- B65D2519/00034—Plastic
-
- 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
- B65D2519/00—Pallets or like platforms, with or without side walls, for supporting loads to be lifted or lowered
- B65D2519/00004—Details relating to pallets
- B65D2519/00009—Materials
- B65D2519/00049—Materials for the base surface
- B65D2519/00069—Plastic
-
- 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
- B65D2519/00—Pallets or like platforms, with or without side walls, for supporting loads to be lifted or lowered
- B65D2519/00004—Details relating to pallets
- B65D2519/00009—Materials
- B65D2519/00084—Materials for the non-integral separating spacer
- B65D2519/00104—Plastic
-
- 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
- B65D2519/00—Pallets or like platforms, with or without side walls, for supporting loads to be lifted or lowered
- B65D2519/00004—Details relating to pallets
- B65D2519/00258—Overall construction
- B65D2519/00263—Overall construction of the pallet
- B65D2519/00273—Overall construction of the pallet made of more than one piece
-
- 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
- B65D2519/00—Pallets or like platforms, with or without side walls, for supporting loads to be lifted or lowered
- B65D2519/00004—Details relating to pallets
- B65D2519/00258—Overall construction
- B65D2519/00283—Overall construction of the load supporting surface
- B65D2519/00288—Overall construction of the load supporting surface made of one piece
-
- 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
- B65D2519/00—Pallets or like platforms, with or without side walls, for supporting loads to be lifted or lowered
- B65D2519/00004—Details relating to pallets
- B65D2519/00258—Overall construction
- B65D2519/00313—Overall construction of the base surface
- B65D2519/00328—Overall construction of the base surface shape of the contact surface of the base
- B65D2519/00338—Overall construction of the base surface shape of the contact surface of the base contact surface having a discrete foot-like shape
-
- 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
- B65D2519/00—Pallets or like platforms, with or without side walls, for supporting loads to be lifted or lowered
- B65D2519/00004—Details relating to pallets
- B65D2519/00258—Overall construction
- B65D2519/00368—Overall construction of the non-integral separating spacer
- B65D2519/00373—Overall construction of the non-integral separating spacer whereby at least one spacer is made of one piece
-
- 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
- B65D2519/00—Pallets or like platforms, with or without side walls, for supporting loads to be lifted or lowered
- B65D2519/00004—Details relating to pallets
- B65D2519/00547—Connections
- B65D2519/00552—Structures connecting the constitutive elements of the pallet to each other, i.e. load supporting surface, base surface and/or separate spacer
- B65D2519/00572—Structures connecting the constitutive elements of the pallet to each other, i.e. load supporting surface, base surface and/or separate spacer with separate auxiliary element, e.g. screws, nails, bayonets
-
- 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
- B65D2519/00—Pallets or like platforms, with or without side walls, for supporting loads to be lifted or lowered
- B65D2519/00004—Details relating to pallets
- B65D2519/00736—Details
- B65D2519/0086—Protection against environmental hazards, e.g. humidity, bacteria, fire
Definitions
- a support for a portable structure such as a washstand or toilet that is resistant to wear, abrasion, incursion of moisture, rot, and splintering, and yet which is affordable and easy to maintain.
- Pallet-type supports are widely used as a base for portable structures such as washstands and enclosed toilets. They customarily provide a platform with underneath runners that create a clearance for forklift blades. This is the preferred means of moving the assembly of support and structure from location to location. However, these are also often shoved along a surface which is rough-gravel or asphalt surfaces being common. Such movements cause heavy wear on conventional runners.
- a skid platform includes a generally rectangular platform with a top surface to which a structure will be mounted, a bottom surface vertically spaced from the top surface, a peripheral wall between the surfaces forming a chamber, a pair of runners attached to the bottom surface spacing it from the ground, the bottom of each runner being fitted with a pair of spaced apart wear shoes which project beneath the bottom of their respective runner to take most of the wear that would otherwise wear out the runner itself.
- the runners are detachably attached to the platform, and the wear shoes are formed as inserts.
- the platform portion of the support and the runners are formed as unitary pieces manufactured by the rotary-moulding process.
- FIG. 1 is a plan view of the presently preferred embodiment of the invention
- FIG. 2 is a side view taken at line 2 - 2 in FIG. 1 ;
- FIG. 3 is an exploded view of FIG. 2 ;
- FIG. 4 is a bottom view of FIG. 2 ;
- FIG. 5 is a section taken at line 5 - 5 in FIG. 4 ;
- FIG. 6 is a cross-section taken at line 6 - 6 in FIG. 4 .
- Support 20 includes a platform 21 and a pair of runners 22 , 23 . Its function is to provide support for a structure 25 such as a portable toilet or washstand. These structures are well-recognized, they generally include a surrounding wall with a door. Customarily they enclose a commode or urinal and often a washstand. The functional details of the structure are arbitrary and form no necessary part of this invention. It simply rests on this support.
- the platform has four sides 30 , 31 , 32 , 33 , a floor 34 ( FIG. 1 ) and a base 35 ( FIG. 4 ).
- the periphery is usually formed as a rectangle with two pairs of parallel sides.
- the floor and the base are vertically spaced apart from one another over most of their areas, by outside side walls 30 ( FIG. 5 ), and inside side walls 31 . Together they form an internal chamber 36 .
- the chamber can be filled with in-place molded structural foam 37 to provide additional structural strength to the support. Otherwise the wall thickness and dimensions of the platform and the structural qualities of their material will be relied on.
- the floor is pierced by a rectangular opening 40 ( FIG. 1 ) with a tapered wall 41 .
- This arrangement enables tanks or receptacles to be held in place, where they can be supplied with water, for example, or receive fluids or other substances which are later to be pumped out.
- a substructural planar stand area 42 of the floor Adjacent to opening 40 there is a substructural planar stand area 42 of the floor for the user to stand on. Usually this will be a continuous flat surface. If desired, some or all of it can be cut out and covered with a grating or screen (not shown). This enables dirt and mud on the user's shoes to be scraped off and fall into region 44 between the runners.
- Base 35 ( FIGS. 5 and 6 ) will preferably be provided with a set of linear grooves 45 between sidewalls. Threaded sockets 46 are implanted in the platform, opening onto the bottom surface near the corners for a purpose to be described.
- Runners 22 and 23 are identical so only runner 22 will be described in detail. It is an elongated member with a top surface 50 formed with a tongue 51 that fits in a respective groove 45 in the bottom surface of the sides of the platform. This tongue-in-groove arrangement holds the runner aligned with the edge of the platform. The top surface on each side engages the bottom surface of the platform on both sides of the groove. The runners are thereby held aligned and in place.
- each runner faces the ground 53 .
- Sidewalls of the runner join the top and bottom surfaces of the runner to form a chamber 56 .
- a structural foam 57 is preferably formed in place in this chamber to give additional strength to the runners.
- Each runner has an attachment flange 60 , 61 ( FIG. 3 ) at each end.
- Each flange includes a bearing surface 62 on which some part of the structure can rest.
- a bolt hole 63 passes a bolt 63 a that is threaded upwardly into the structure to hold the structure to the runner. It is possible to make the flange a part of the platform instead, and such an arrangement is contemplated by this invention. However it is much easier to provide it as part of the runner when the runner is made with processes preferred in this invention.
- the flange also acts as a closure for the ends of the runner.
- the materials of construction of this support provide substantial and certainly adequate wall, column and beam strength to support the structure, both when it rests on the ground, and when a forklift lifts it between the runners.
- the basic material of construction is an organic plastic which is impermeable to water. However, its abrasive resistance is less that one would prefer. Structures such as these are often shoved along a very rough surface. This is one reason why wooden runners require such frequent maintenance.
- each runner is provided with a pair of “wear shoes” 70 .
- Each shoe has a tapered outer periphery 71 , a wear surface 72 , and a bolt hole 73 passing axially through it.
- the socket 74 into which the shoe fits has a matching tapered hole 75 aligned with a port 76 in the bottom of the platform.
- the shoes are made with a vivid color such as a bright yellow that contrasts with a black runner. Their wear will then be more evident.
- An engagement grove 85 is formed in the bottom of engagement flange 60 for engagement by a hook or cable for lifting the assembly, instead of rasing it by a forklift.
- the platform can be made in single piece.
- each runner can be made as a single piece. They are hollow structures which can be filled with a structural foam either while the outer wall is being formed, or after they are formed.
- rotational moulding or sometimes “slush moulding”
- a hollow mold whose inside surfaces are intended to be the mirror image of the surfaces formed against them.
- the mold shaped is closed after a sufficient amount of a plastic to be molded is put inside.
- the mold is heated and rotated appropriately around axes of rotation.
- the organic plastic material is melted, and flows around the inside wall of the mold. After a sufficient length of time, the plastic will have been distributed and ready to be cured.
- the mold is allowed to cool, and is separated, and the product is removed. It is, of course, a hollow product.
- a foaming product is placed in the mold, where it forms a structural foam inside the molded structure.
- Variations in the wall thickness, and localized thicker areas can be provided for by appropriate insulation on the tooling so that additional material will be deposited locally. Also, implants such as sockets can be placed in the tooling so they will be incorporated into the structure.
- the wall thicknesses and structural strength of the materials are known so that a suitably strong structure will be made.
- Any suitable heat curable organic plastic can be used which has sufficient strength properties.
- Polyethylene and polybutylene are commonly used.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Pallets (AREA)
Abstract
A pallet-type skid support for portable structures such as for washstands and commodes. It is made from polymeric material that is abrasion resistant and resistant to moisture and rot, in contrast to wooden pallets. It includes runners that are separably attached to the platform. The platform and runners are conveniently manufactured by the rotational molding process. Indicators of runner wear may be provided.
Description
- A support for a portable structure such as a washstand or toilet that is resistant to wear, abrasion, incursion of moisture, rot, and splintering, and yet which is affordable and easy to maintain.
- Pallet-type supports are widely used as a base for portable structures such as washstands and enclosed toilets. They customarily provide a platform with underneath runners that create a clearance for forklift blades. This is the preferred means of moving the assembly of support and structure from location to location. However, these are also often shoved along a surface which is rough-gravel or asphalt surfaces being common. Such movements cause heavy wear on conventional runners.
- The most commonly used material for such supports is wood. While wood is comparatively inexpensive, still the use of wooden pallets involves problems which need not exist. Examples of problems are the rapid splintering of wood, the incursion of water into the wood leading to rot, and the necessity of frequent repair or disposal of worn pallets and/or their runners. In addition forests are depleted by the widespread consumption of wood for pallets.
- It is an object of this invention to provide a suitable support for a structure which support has moisture-impermeable outer surfaces, wear-resistant shoes inserted in the undersurface of the runners, and structural integrity as good as or better than wood.
- It is another object of this invention to provide the runners as separate bodies readily attached to the platform, with their wear-resistant shoes readily replaced in the runners when they wear out, thereby to reduce wear on the runner itself and to extend the life of the runners.
- It is still another object of the invention to provide a platform of substantial size that can be made with the use of rotational moulding processes.
- There results a strong, affordable and sufficient skid support for a portable structure.
- A skid platform according to this invention includes a generally rectangular platform with a top surface to which a structure will be mounted, a bottom surface vertically spaced from the top surface, a peripheral wall between the surfaces forming a chamber, a pair of runners attached to the bottom surface spacing it from the ground, the bottom of each runner being fitted with a pair of spaced apart wear shoes which project beneath the bottom of their respective runner to take most of the wear that would otherwise wear out the runner itself.
- According to a feature of this invention the runners are detachably attached to the platform, and the wear shoes are formed as inserts.
- According to yet another preferred but optional feature of the invention, the platform portion of the support and the runners are formed as unitary pieces manufactured by the rotary-moulding process.
- The above and other features of this invention will be fully understood from the following detailed description and the accompanying drawings, in which:
-
FIG. 1 is a plan view of the presently preferred embodiment of the invention; -
FIG. 2 is a side view taken at line 2-2 inFIG. 1 ; -
FIG. 3 is an exploded view ofFIG. 2 ; -
FIG. 4 is a bottom view ofFIG. 2 ; -
FIG. 5 is a section taken at line 5-5 inFIG. 4 ; and -
FIG. 6 is a cross-section taken at line 6-6 inFIG. 4 . -
Support 20 includes aplatform 21 and a pair ofrunners structure 25 such as a portable toilet or washstand. These structures are well-recognized, they generally include a surrounding wall with a door. Customarily they enclose a commode or urinal and often a washstand. The functional details of the structure are arbitrary and form no necessary part of this invention. It simply rests on this support. - The platform has four
sides FIG. 1 ) and a base 35 (FIG. 4 ). The periphery is usually formed as a rectangle with two pairs of parallel sides. - The floor and the base are vertically spaced apart from one another over most of their areas, by outside side walls 30 (
FIG. 5 ), and insideside walls 31. Together they form aninternal chamber 36. The chamber can be filled with in-place moldedstructural foam 37 to provide additional structural strength to the support. Otherwise the wall thickness and dimensions of the platform and the structural qualities of their material will be relied on. - The floor is pierced by a rectangular opening 40 (
FIG. 1 ) with atapered wall 41. This arrangement enables tanks or receptacles to be held in place, where they can be supplied with water, for example, or receive fluids or other substances which are later to be pumped out. - Adjacent to opening 40 there is a substructural
planar stand area 42 of the floor for the user to stand on. Usually this will be a continuous flat surface. If desired, some or all of it can be cut out and covered with a grating or screen (not shown). This enables dirt and mud on the user's shoes to be scraped off and fall intoregion 44 between the runners. - Base 35 (
FIGS. 5 and 6 ) will preferably be provided with a set oflinear grooves 45 between sidewalls. Threadedsockets 46 are implanted in the platform, opening onto the bottom surface near the corners for a purpose to be described. -
Runners runner 22 will be described in detail. It is an elongated member with atop surface 50 formed with atongue 51 that fits in arespective groove 45 in the bottom surface of the sides of the platform. This tongue-in-groove arrangement holds the runner aligned with the edge of the platform. The top surface on each side engages the bottom surface of the platform on both sides of the groove. The runners are thereby held aligned and in place. - The
bottom surface 52 of each runner faces theground 53. Sidewalls of the runner join the top and bottom surfaces of the runner to form achamber 56. Astructural foam 57 is preferably formed in place in this chamber to give additional strength to the runners. - Each runner has an
attachment flange 60,61 (FIG. 3 ) at each end. Each flange includes abearing surface 62 on which some part of the structure can rest. Abolt hole 63 passes abolt 63 a that is threaded upwardly into the structure to hold the structure to the runner. It is possible to make the flange a part of the platform instead, and such an arrangement is contemplated by this invention. However it is much easier to provide it as part of the runner when the runner is made with processes preferred in this invention. The flange also acts as a closure for the ends of the runner. - The materials of construction of this support provide substantial and certainly adequate wall, column and beam strength to support the structure, both when it rests on the ground, and when a forklift lifts it between the runners. The basic material of construction is an organic plastic which is impermeable to water. However, its abrasive resistance is less that one would prefer. Structures such as these are often shoved along a very rough surface. This is one reason why wooden runners require such frequent maintenance.
- To overcome this disadvantage, each runner is provided with a pair of “wear shoes” 70. Each shoe has a tapered
outer periphery 71, awear surface 72, and abolt hole 73 passing axially through it. Significantly, thesocket 74 into which the shoe fits has a matching tapered hole 75 aligned with aport 76 in the bottom of the platform. - Inside
port 76 there is a cast-in-place or an embedded threaded receptacle. To mount the shoe, one merely inserts abolt 63 a through hole 75 and threads the bolt into the receptacle. That is all. This both removably attaches the shoe and holds the runner to the platform. Thehead 78 of the bolt fits in a recess 79 in the shoe so that it is not contacted directly by the ground. A raisedrim 80 on the face of the shoe can provide for first wear. When it is ground down, it is visually apparent that a replacement shoe will soon be needed. - Preferably the shoes are made with a vivid color such as a bright yellow that contrasts with a black runner. Their wear will then be more evident.
- An engagement grove 85 is formed in the bottom of
engagement flange 60 for engagement by a hook or cable for lifting the assembly, instead of rasing it by a forklift. - An examination of the drawings will show that the shape of the platform and runners are so complicated that it would not be affordable if made by most common manufacturing techniques. Instead, because it is amenable to use of rotational moulding process, the platform can be made in single piece. Also each runner can be made as a single piece. They are hollow structures which can be filled with a structural foam either while the outer wall is being formed, or after they are formed.
- As such these runners provide a sufficient volumetric device to enable the use of forklifts and to hold the structure above the ground. Conventional pallets do this by nailing together pieces of wood with all of their costs and disadvantages.
- The process known as rotational moulding, or sometimes “slush moulding”, is characterized by the use of a hollow mold whose inside surfaces are intended to be the mirror image of the surfaces formed against them. In practice, the mold shaped is closed after a sufficient amount of a plastic to be molded is put inside.
- Then the mold is heated and rotated appropriately around axes of rotation. The organic plastic material is melted, and flows around the inside wall of the mold. After a sufficient length of time, the plastic will have been distributed and ready to be cured. The mold is allowed to cool, and is separated, and the product is removed. It is, of course, a hollow product.
- Either as a secondary operation or a part of the initial formation, a foaming product is placed in the mold, where it forms a structural foam inside the molded structure. These techniques are well-known in the art.
- Variations in the wall thickness, and localized thicker areas can be provided for by appropriate insulation on the tooling so that additional material will be deposited locally. Also, implants such as sockets can be placed in the tooling so they will be incorporated into the structure.
- The wall thicknesses and structural strength of the materials are known so that a suitably strong structure will be made.
- Any suitable heat curable organic plastic can be used which has sufficient strength properties. Polyethylene and polybutylene are commonly used.
- This invention is not to be limited by the embodiment shown in the drawings and described in the description, which is given by way of example and not of limitation, but only in accordance with the scope of the appended claims.
Claims (5)
1. A support to mount a portable structure above the surface of the ground, said support comprising:
a platform having a top surface, a bottom surface, four peripheral outer sidewalls, and four inside sidewalls, said outer sidewalls being integral with said top and bottom surfaces, thereby spacing them apart, said inner sidewalls being parallel to and spaced apart from respective sidewalls, integral with said top and bottom surfaces, thereby forming a peripheral chamber bounded by said sidewalls and the top and bottom surfaces;
a groove in said bottom surface parallel to at least one parallel pair of said outer sidewalls;
a pair of runners, each runner comprising a top surface, a bottom surface, a pair of sidewalls and a pair of end closures, said surfaces, sidewalls and end closures forming a prismatic body enclosing a chamber, and a mounting pad at each end to engage said portable structure;
a tongue on the top surface of said runner so disposed and arranged as to fit into a respective groove in the bottom surface of the platform;
said runners having a pair of sockets opening onto the bottom surface of the runner, said sockets being tapered, with a central opening;
a wear shoe for each said socket, said wear shoe being tapered to fit into said socket with a flange to bear against the bottom surface of the runner, and a thickness sufficient to space the wear surface from the bottom surface of the runner;
a bolt which includes a head, a shank and a thread for each insert, said bolt being passed through said insert with its head bearing against the wear shoe and its thread threaded into said platform, thereby attaching the wear shoe to the runner and the runner to the platform;
the top and bottom surfaces and sidewalls of the platform being integral and continuous with one another, created by the rotational moulding process;
the top and bottom surfaces and sidewalls of the runners being integral and continuous with one another, created by the rotational moulding process.
2. A support according to claim 1 in which the top surface of the platform includes a recess to receive a container, and a stand on which a person can stand.
3. A support according to claim 1 in which the top surface of the platform includes a recess to receive a container, an open region, and a grating to overlay the open region on which a person can stand, but through which dirt can fall.
4. A support according to claim 1 in which the color of the shoe contrasts with the color of the runner to provide evidence of wear.
5. A support according to claim 2 in which said bottom surface of said platform in the region directly beneath said stand is closer to the stand than the remainder of the bottom surface.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/433,762 US20070261610A1 (en) | 2006-05-11 | 2006-05-11 | Skid support for portable structures |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/433,762 US20070261610A1 (en) | 2006-05-11 | 2006-05-11 | Skid support for portable structures |
Publications (1)
Publication Number | Publication Date |
---|---|
US20070261610A1 true US20070261610A1 (en) | 2007-11-15 |
Family
ID=38683928
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/433,762 Abandoned US20070261610A1 (en) | 2006-05-11 | 2006-05-11 | Skid support for portable structures |
Country Status (1)
Country | Link |
---|---|
US (1) | US20070261610A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20070277706A1 (en) * | 2006-06-01 | 2007-12-06 | Carter Bruce R | Load bearing structure with inserts |
US20080209625A1 (en) * | 2007-02-09 | 2008-09-04 | Hampel Lance T | Oversized Portable Restroom With Standardized Footprint |
US20090114129A1 (en) * | 2006-04-20 | 2009-05-07 | Victor Smith | Pallet |
Citations (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3685461A (en) * | 1970-10-30 | 1972-08-22 | Owens Illinois Inc | Pallet |
US3719157A (en) * | 1970-09-21 | 1973-03-06 | Owens Illinois Inc | Pallet assembly |
US5117762A (en) * | 1990-02-26 | 1992-06-02 | Shuert Lyle H | Rackable plastic pallet |
US5133460A (en) * | 1990-03-05 | 1992-07-28 | Shuert Lyle H | Bulk container |
US6305301B1 (en) * | 1999-07-26 | 2001-10-23 | Piper Plastics, Inc. | Support structures such as pallets and methods and systems relating thereto |
US6357366B1 (en) * | 1999-02-05 | 2002-03-19 | Menasha Corporation | Rackable molded pallet |
US6446563B1 (en) * | 1998-10-07 | 2002-09-10 | Harout Ohanesian | Thermoplastic pallet |
US6668735B2 (en) * | 2000-05-15 | 2003-12-30 | Fustiplast S.P.A. | Pallet with a plastic platform |
US6758148B2 (en) * | 2001-10-26 | 2004-07-06 | Chep International, Inc. | Fire blocking method and apparatus |
US6837377B2 (en) * | 2002-12-19 | 2005-01-04 | Lyle H. Shuert | Stackable open top containers |
US6886475B2 (en) * | 1998-01-08 | 2005-05-03 | Rehrig Pacific Company | Plastic pallet |
US6976437B2 (en) * | 2003-02-17 | 2005-12-20 | Poly-Flex, Inc. | Blow molded pallet with inserts |
-
2006
- 2006-05-11 US US11/433,762 patent/US20070261610A1/en not_active Abandoned
Patent Citations (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3719157A (en) * | 1970-09-21 | 1973-03-06 | Owens Illinois Inc | Pallet assembly |
US3685461A (en) * | 1970-10-30 | 1972-08-22 | Owens Illinois Inc | Pallet |
US5117762A (en) * | 1990-02-26 | 1992-06-02 | Shuert Lyle H | Rackable plastic pallet |
US5133460A (en) * | 1990-03-05 | 1992-07-28 | Shuert Lyle H | Bulk container |
US6886475B2 (en) * | 1998-01-08 | 2005-05-03 | Rehrig Pacific Company | Plastic pallet |
US6446563B1 (en) * | 1998-10-07 | 2002-09-10 | Harout Ohanesian | Thermoplastic pallet |
US6357366B1 (en) * | 1999-02-05 | 2002-03-19 | Menasha Corporation | Rackable molded pallet |
US6305301B1 (en) * | 1999-07-26 | 2001-10-23 | Piper Plastics, Inc. | Support structures such as pallets and methods and systems relating thereto |
US6668735B2 (en) * | 2000-05-15 | 2003-12-30 | Fustiplast S.P.A. | Pallet with a plastic platform |
US6758148B2 (en) * | 2001-10-26 | 2004-07-06 | Chep International, Inc. | Fire blocking method and apparatus |
US6837377B2 (en) * | 2002-12-19 | 2005-01-04 | Lyle H. Shuert | Stackable open top containers |
US6976437B2 (en) * | 2003-02-17 | 2005-12-20 | Poly-Flex, Inc. | Blow molded pallet with inserts |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20090114129A1 (en) * | 2006-04-20 | 2009-05-07 | Victor Smith | Pallet |
US8397649B2 (en) * | 2006-04-20 | 2013-03-19 | Yah Corp Industries Limited | Pallet |
US20070277706A1 (en) * | 2006-06-01 | 2007-12-06 | Carter Bruce R | Load bearing structure with inserts |
US20080209625A1 (en) * | 2007-02-09 | 2008-09-04 | Hampel Lance T | Oversized Portable Restroom With Standardized Footprint |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CA2418210C (en) | Riser pan component for on-site waste systems | |
US8092728B2 (en) | Skid base for portable building | |
US8011739B2 (en) | Replaceable wear pad | |
US6821468B2 (en) | Soft grip tool handle and method of manufacture | |
US20070261610A1 (en) | Skid support for portable structures | |
US6725470B2 (en) | Shower tray | |
US5341527A (en) | Bathtub with integrally formed leveling base | |
US20080073300A1 (en) | Expandable Self-Draining Footwear Rack | |
US9487950B2 (en) | False formwork for moulding concrete panels | |
US7536732B1 (en) | Toilet seat shock absorption and slide prevention device | |
US20170120475A1 (en) | Mould for a Skimmer Box Lid | |
US20230121533A1 (en) | Modular mat system | |
US8424640B2 (en) | Spa stair apparatus and methods with convertible steps | |
KR200417926Y1 (en) | a boundary stone for No entering | |
US8464897B2 (en) | Attachable, replaceable skid pad for receptacle | |
US20240133184A1 (en) | Foot traction panel assembly for stair treads, steps, and walkways | |
US20030106743A1 (en) | Swimming pool stairs | |
US8727659B1 (en) | Manhole cover with insert | |
US10485390B2 (en) | Bumperless toilet lid | |
GB2114498A (en) | Coffins | |
GB2471687A (en) | A shower floor structure with support layer | |
JP2016044439A (en) | Grating | |
KR100402701B1 (en) | A mat for automobile | |
GB2585006A (en) | Waterproof or splash-resistant article | |
KR200442733Y1 (en) | A Raised Letters Block For Blind Man |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |