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US 5,287,970 AGranted
Load carrier of plastic and tool for the production of same
AssigneeFritz Schafer Gesellschaft mit beschrankter Haftung
InventorKarl A. Weidt
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AssigneeFritz Schafer Gesellschaft mit beschrankter Haftung
InventorKarl A. Weidt
Estimating the term…
A load carrier 1 of plastic, particularly a storage and transporting box or container as well as a pallet or shelf, is suggested in which a base 2 having a planar upper surface is stabilized on the underside by stiffening ribs 3 and in which flat foot strips 5 lying in the direction of the base plane extend at least along two defining edges 4 of the base 2 running parallel to one another, are supported at a distance below the base plane by webs 6 directed transversely relative to the respective defining edge 4, and form stand surfaces of the load carrier 1, wherein there are free spaces 7, 7a between the underside 2a of the base, the upper side of the foot strips and the transversely directed webs 6, which free spaces 7, 7a are enclosed to form pockets and are open at least toward the defining edge 4. The trouble-free, dynamic use of such load carriers 1 is improved in that the end portions 9 of the flat foot strips 5 are formed by parts 10 which are curved upward transversely relative to their longitudinal direction in the shape of a ski until meeting the underside 2a of the base and have a secure connection 11 at the base 2 and accordingly simultaneously form an end web serving to define a pocket-like free space.
Load carrier of plastic, in which a base having a planar upper surface is stabilized on the underside by stiffening ribs and in which flat foot strips lying in the direction of the base plane extend at least along two defining edges of the base running parallel to one another, are supported at a distance below the base plane by webs directed transversely relative to the respective defining edge, and form stand surfaces of the load carrier, wherein there are free spaces between the underside of the base, the upper side of the foot strips and the transversely directed webs, which free spaces are enclosed to form pockets and are open at least toward the defining edge, characterized in that the end portions (9) of the flat foot strips (5) are formed by parts (10) which are curved upward transversely relative to their longitudinal direction in the shape of a ski until meeting the underside (2a) of the base and have a secure connection (11) at the base (2) and accordingly simultaneously form an end web serving to define a pocket-like free space (7a).
Tool for the production of load carriers of plastic in which a base having planar upper surface is stabilized on the underside by stiffening ribs and in which flat foot strips lying in the direction of the base plane extend at least along two defining edges of the base running parallel to one another, are supported at a distance below the base plane by webs directed transversely relative to the respective defining edge, and form stand surfaces of the load carrier, wherein there are free spaces between the underside of the base, the upper side of the foot strips and the transversely directed webs, which free spaces are enclosed to form pockets and are open at least toward the defining edge, characterized in that the end portions (9) of the flat foot strips (5) are formed by parts (10) which are curved upward transversely relative to their longitudinal direction in the shape of a ski until meeting the underside (2a) of the base and have a secure connection (11) at the base (2) and accordingly simultaneously form an end web serving to define a pocket-like free space (7a), in addition to a tool part determining the flat or smooth inner shape of the load carrier, also comprises a plurality of tool parts which are movable relative to one another and determine the outer shape which is provided with ribs, webs, reliefs or the like, characterized in that the tool parts forming the free spaces (7, 7a) which are defined in a pocket-like manner between the flat foot strip (5) and the underside (2a) of the base (2) are designed as core pieces (29, 30 or 40 and 42, 43) which are arranged at side jaws (22 or 36, 37), which are movable parallel to the base plane, and project out laterally in a comb-like manner, the end core pieces (30 or 43) of these core pieces (29, 30 or 40 and 42, 43) having rounded portions (32 or 40) whose shaping corresponds to the inner contour of the end portions (9) or end webs (10) at the flat foot strips (5) which are curved upward in the manner of a ski.
Tool for the production of load carriers of plastic in which a base having planar upper surface is stabilized on the underside by stiffening ribs and in which flat foot strips lying in the direction of the base plane extend at least along two defining edges of the base running parallel to one another, are supported at a distance below the base plane by webs directed transversely relative to the respective defining edge, and form stand surfaces of the load carrier, wherein there are free spaces between the underside of the base, the upper side of the foot strips and the transversely directed webs, which free spaces are enclosed to form pockets and are open at least toward the defining edge, characterized in that the end portions (9) of the flat foot strips (5) are formed by parts (10) which are curved upward transversely relative to their longitudinal direction in the shape of a ski until meeting the underside (2a) of the base and have a secure connection (11) at the base (2) and accordingly simultaneously form an end web serving to define a pocket-like free space (7a), the tool parts forming the free spaces (7, 7a) defined in a pocket-like manner between the flat foot strip (5) and the underside (2a) of the base (2) are designed as core pieces (47, 48) which are arranged at side jaws (46), which are movable parallel to the base plane, and project out laterally in a comb-like manner, the end core pieces (48) of the cores pieces (47, 48) assigned to the corner regions being provided with bevels (49) which extend in the direction of an angle bisecting lines to the respective corner region and terminate in a rounded portion (50) enclosing an arc angle of 45.degree., and in that a diagonally movable core form (51) below the base (20) is assigned, in addition, to every corner regions (FIGS. 7 and 8).
Dependencies are inferred from the claim text.