US4280727A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Injection molded snow shovel
Assignee: True Temper Hardware Co
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Filing: 1979-10-10
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Granted: 1981-07-28
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Expires: 1999-10-10
Abstract
Abstract 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°-235° 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°-235° 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.
Inventors
- 👤 Robert A. Germain
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:44
CPC Classifications
E; E01; E01H; E01H5/00; E01H5/02
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
189 words
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.
Claim 2
Dependent Claim
189 words
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.
Claim 3
Dependent Claim
66 words
A unitary snow shovel scoop with operative handle as defined in claim 1, wherein said handle stem structure extending from said handle-attached edge inward on said scoop for several inches consists of an arcuate shell extending through an arc of a little more than semi-circular opening downwardly together with a central diametrically extending integral rib of a length to reach the circular limit of said arc.
Claim 4
Dependent Claim
82 words
A unitary snow shovel scoop with operative handle as defined in claim 2, wherein said handle stem structure from said handle-attached edge outward consists of an arcuate shell on its lower face extending through an arc a little more than semi-circular opening upwardly, together with, on the upper face, an open X-crossing structure repeated longitudinally at intervals between about one and one-eight inches and one and one-half inches, said crossing structure of a length to reach the circular limit of said arc.
Claim 5
Dependent Claim
111 words
A unitary snow shovel scoop with operative handle as defined in claim 2, wherein said handle stem structure, extending for a length from said handle-attached edge inward on said scoop for several inches and outward from said last named edge for a space normally grasped by the hand of an acting shoveller, consists of an outer cylindrical shell having an inner generally cylindrical hollow surface having spaced longitudinal reinforcing projections extending a short distance radially inwardly, said last named length decreasing in diameter continuously and regularly 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.
Claim 6
Dependent Claim
83 words
A unitary snow shovel scoop with operative handle as defined in claim 4, wherein said handle stem structure from said length having longitudinal reinforcing projections outwardly consists of a lower arcuate shell extending through an arc of a little more than semi-circular opening upwardly, together with, on the upper face, an open X-crossing structure repeated longitudinally at intervals of about one and one-eight inches and one and one-half inches, said crossing structure of a length to reach the circular limit of said arc.
Claim 7
Dependent Claim
113 words
A unitary snow shovel scoop with operative handle as defined in claim 2, including a plurality of laterally spaced reinforcement ribs formed concavely upward in said upper surface of said scoop extending normally between said edges and including a central rib and evenly spaced generally parallel ribs laterally thereof, said ribs other than said central rib gradually increasing in depth from a minimum depth adjacent said leading edge to about one-half inch depth at a predetermined short distance from said handle-attached edge, said center rib ending at said upper surface toward said handle-attached edge, and a snow-retaining and reinforcing flange extending upwardly from the periphery of said scoop except for said leading edge.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-07-27 | 1985-01-26 | 1985-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-07-27 | 1989-01-26 | 1989-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-07-27 | 1993-01-26 | 1993-07-28 | $7700.00 | Window Closed / Lapsed |