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US 4,280,727 AGranted
Injection molded snow shovel
AssigneeTrue Temper Corporation
InventorRobert A. Germain
Life of this patent
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AssigneeTrue Temper Corporation
InventorRobert A. Germain
Estimating the term…
A one piece plastic injection molded snow shovel in which the blade, synthetic plastic handle stem and D-top handle are molded in one operation and a finished unit is produced from one cycle of the molding machine. A generally rectangular scoop of synthetic plastic has an integral generally cylindrical hollow handle stem extending centrally outwardly from the rear edge of the scoop. One embodiment has an inwardly reinforced cylindrical stem extending inward of the scoop for several inches from the back edge and then outward for a space normally grasped by a hand of the shoveller. A second embodiment has the handle stem entering from the back of the scoop with a section including an arcuate shell having an arc between about 220.degree.-235.degree. and with a central reinforcing rib diametetrically of the arc. In either case, much of the outwardly extending handle stem consists of upwardly opening arcuate shell between about 220.degree.-235.degree. together with an upper face of an open X-crossing structure making a light but strong handle. A third embodiment has a hollow cylindrical handle stem of which almost the entire length has a plurality of spaced longitudinally extending short reinforcing projections extending radially inwardly.
A unitary snow shovel scoop with operative handle, comprising a generally planar rectangular scoop having a transverse linear leading edge opposite a handle-attached edge, a bifurcated reinforcement strip extending the entire length of said leading edge, a coacting flat linear metal strip firmly secured in the bifurcation of said reinforcement strip and extending beyond the front edge of said reinforcement strip, and a generally cylindrical hollow handle stem structure extending centrally of said scoop at right angles to said leading edge from a point on said scoop to a position on said handle stem for a handle grip spaced from said handle-attached edge, said hollow handle stem structure being integral with said scoop, said handle stem structure decreasing in diameter continuously and regularly for a length from a point a few inches inside of said handle-attached edge outwardly to said handle grip by an amount of draft permitting a forming core extending through said length to be removed longitudinally of said handle stem from said scoop end, and the hollow portion of said handle stem being cylindrical and having spaced longitudinally extending short reinforcing projections extending throughout said length.
Dependencies are inferred from the claim text.