Power driven wheel barrow
First Claim
1. A power driven wheel barrow comprising:
- a pair of frame members, said pair of frame members being connected at a front portion thereof;
a drive wheel rotatably mounted at the front portion of said frame members;
drive means for providing rotational motion to a first shaft about an axis having a direction substantially normal to a direction of an axis of rotation of said drive wheel;
sealed gear box means for converting the rotational motion provided by said first shaft to a direction substantially parallel to the direction of rotation of said drive wheel and for outputting the converted rotational motion using a second shaft, said drive means and said sealed gear box means being attached to each other to form a compact direct-drive unit, wherein a driving pulley is mounted to said second shaft for rotating a belt used for driving said drive wheel; and
engaging means for selectively engaging and disengaging the rotational motion output by said sealed gear box means to and from said drive wheel, said engaging means comprising a member including an engaging roller, wherein the member is pivotally connected about said second shaft so that the engaging roller can be selectively moved to a position engaging the belt and to a position removed from engagement with the belt.
2 Assignments
0 Petitions
Accused Products
Abstract
A power driven wheel barrow includes a pair of frame members, the pair of frame members being connected at a front portion thereof, a drive wheel rotatably mounted at the front portion of the frame members, a motor for providing rotational motion to a first shaft about an axis having a direction substantially normal to a direction of an axis of rotation of the drive wheel, a sealed gear box for converting the rotational motion provided by the first shaft to a direction substantially parallel to the direction of rotation of the drive wheel and outputting the converted rotational motion and a roller for selectively engaging and disengaging the rotational motion output by the sealed gear box to and from the drive wheel.
37 Citations
8 Claims
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1. A power driven wheel barrow comprising:
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a pair of frame members, said pair of frame members being connected at a front portion thereof; a drive wheel rotatably mounted at the front portion of said frame members; drive means for providing rotational motion to a first shaft about an axis having a direction substantially normal to a direction of an axis of rotation of said drive wheel; sealed gear box means for converting the rotational motion provided by said first shaft to a direction substantially parallel to the direction of rotation of said drive wheel and for outputting the converted rotational motion using a second shaft, said drive means and said sealed gear box means being attached to each other to form a compact direct-drive unit, wherein a driving pulley is mounted to said second shaft for rotating a belt used for driving said drive wheel; and engaging means for selectively engaging and disengaging the rotational motion output by said sealed gear box means to and from said drive wheel, said engaging means comprising a member including an engaging roller, wherein the member is pivotally connected about said second shaft so that the engaging roller can be selectively moved to a position engaging the belt and to a position removed from engagement with the belt. - View Dependent Claims (2, 3, 4)
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5. A power driven wheel barrow comprising:
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a pair of converging frame members, said pair of frame members being connected at a front portion thereof; a drive wheel rotatably mounted at the front portion of said frame members; drive means for providing rotational motion to a first drive shaft about an axis having a direction substantially normal to a direction of an axis of rotation of said drive wheel; sealed gear box means for converting the rotational motion provided by said first drive shaft to a direction substantially parallel to the direction of rotation of said drive wheel and for outputting the converted rotational motion using a second drive shaft, said sealed gear box means being attached to said drive means to form a compact direct drive unit, wherein a driving pulley is mounted to said second drive shaft for rotating a belt used for driving said drive wheel; and selecting means for selectively providing the converted rotational motion output from said sealed gear box means to and from said drive wheel, said selecting means comprising a member including an engaging roller, wherein the member is pivotally connected about said second drive shaft so that the engaging roller can be selectively moved to a position engaging the belt and to a position removed from engagement with the belt. - View Dependent Claims (6, 7)
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8. A drive unit adaptable to a conventional wheel barrow including a drive wheel rotatably mounted at a front portion of a pair of frame members for converting the conventional wheel barrow to a power driven wheel barrow, said drive unit comprising:
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drive means for providing rotational motion to a first shaft about an axis in a first direction; sealed gear box means for converting the rotational motion provided by said first shaft to a second direction about an axis substantially normal to the axis of rotation of the first direction, said sealed gear box means including a worm shaft for delivering the rotational motion from said first shaft to a worm wheel, said worm wheel delivering rotational motion to a second shaft for providing the rotational motion in the second direction, wherein a driving pulley is mounted to the second shaft for rotating a belt used for driving the drive wheel, and wherein said drive means is mounted to said sealed gear box means to form a compact direct drive unit, and wherein said sealed gear box means can be attached to a conventional wheel barrow for converting the conventional wheel barrow to a power-driven wheel barrow; and engaging means for selectively engaging and disengaging the rotational motion output by said sealed gear box means to and from the drive wheel, said engaging means comprising a member including an engaging roller, wherein the member is pivotally connected about said second shaft so that the engaging roller can be selectively moved to a position engaging the belt and to a position removed from engagement with the belt.
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Specification