Self-propelled drive and cutter using same
OwnerJonathan Staufferinventor
Life of this patent
Estimating the term…
Abstract
A self-propelled cutter has a gear assembly to provide both downward and forward force on a material to be cut. A gear assembly includes a drive input gear that engages with a transfer gear and propulsion gear engaged with the transfer gear by a lever arm. The drive gear and transfer gear are coupled and fixed to the cutter body but the propulsion gear rotates about the transfer gear via the lever arm. This gear assembly enables the propulsion gear to move as required to provide both downward and forward force on a material to be cut, such as a cast. A self-propelled cutter may have a drive input that is coupled with a drive input device, such as a crank or an electric motor. A cutter may have a first gear assembly on a first side of the cutter body and a second gear assembly on a second side.
Claims17
A propelled cutter comprising:
- a) a cutter body comprising:
- i) a first side;
- and
- ii) a second side;
- iii) a front;
- iv) a back;
- v) a bottom;
- vi) a top;
- and
- vii) a vertical axis extending from said bottom to said top when in an upright position;
- b) a fixed blade coupled to the cutter body;
- c) a foot extending from said bottom of the cutter body and configured to guide a material to be cut over the foot and across the fixed blade;
- d) a drive input device coupled with a drive input extension that is coupled with the cutter body and with a drive assembly, said drive assembly comprising:
- iii) a first propulsion gear configured on the first side of the cutter body and having a rotational axis;
- iv) a first transfer gear configured on the first side of the cutter body and having a rotational axis and being movably attached and movably engaged with the first propulsion gear to spin the first propulsion gear;
- v) a second propulsion gear configured on the second side of the cutter body and having a rotational axis;
- vi) a second transfer gear configured on the second side of the cutter body and having a rotational axis and being movably attached and movably engaged with the second propulsion gear to spin the second propulsion gear;
- wherein the first propulsion gear is driven by the first transfer gear to spin to move said material to be cut across the fixed blade to cut said material;
- and
- wherein the second propulsion gear is driven by the second transfer gear to spin to move said material to be cut across the fixed blade to cut said material.
Dependencies are inferred from the claim text.