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US 7,107,691 B2Granted
Electric knife adapted for safely carving pumpkins and other fruits and vegetables
AssigneeEmerald Innovations, LLC
InventorsJohn R. Nottingham, John W. Spirk, Trevor L. Jaokson, Don C. Fuchs Jr., Doug Gall
Life of this patent
Estimating the term…
Abstract
According to one embodiment of the present invention, an electric knife is provided that includes a blade that is adapted to cut the pulp and shell of pumpkins and other fruits and vegetables but not readily cut the skin and flesh of humans. According to a preferred embodiment of the present invention, the electric knife also includes a shield that that is adapted to prevent fruit or vegetable matter from entering the housing of the electric knife.
Claims13
An electric pumpkin carving knife comprising:
- a housing forming a handle of the knife,
- an electric motor in the housing sized and structured
- for powering by two to six 1.5V alkaline batteries and
- for producing an output of generally between 12,000 and 20,000 revolutions per minute when under no load,
- and
- a single pumpkin blade, the pumpkin blade being operatively connected to the electric motor so that, when the motor is actuated, the pumpkin blade reciprocates with a blade stroke of between 0.05 inch and 1.5 inches, wherein the pumpkin blade
- has generally dull teeth so that the pumpkin blade will readily cut the flesh of a pumpkin but not human skin when the motor is actuated,
- is stiff enough to easily puncture the flesh of a pumpkin yet flexible enough to bend while cutting though the flesh of a pumpkin without breaking, and
- has a blade height of 0.05 inch to 0.3 inch and a width of 0.01 inch to 0.1 inch to allow the knife to carve intricate designs and elaborate details in the flesh of a pumpkin.
6 more elements
An electric pumpkin carving knife comprising:
- a housing forming a handle of the knife, wherein the housing is elongated and defines a longitudinal direction,
- an electric motor in the housing sized and structured
- for powering by 2 to 6 1.5V alkaline batteries and
- for producing an output of generally between 12,000 and 20,000 revolutions per minute when under no load,
- and
- a single pumpkin blade, the pumpkin blade being generally aligned with the longitudinal direction of the housing and being operatively connected to the electric motor so that, when the motor is actuated, the pumpkin blade reciprocates with a blade stroke of between 0.1 inch and 0.5 inches, wherein the pumpkin blade
- has generally dull teeth so that the pumpkin blade will readily cut the flesh of a pumpkin but not human skin when the motor is actuated, a unsharpened teeth having a forwardly projecting profile, a pitch of 0.06 inch to 0.18 inch, and a tooth height of 0.02 inch to 0.08 inch,
- is stiff enough to easily puncture the flesh of a pumpkin yet flexible enough to bend while cutting though the flesh of a pumpkin without breaking, and
- has a blade height of 0.05 inch to 0.3 inch and a width of 0.01 inch to 0.1 inch to allow the knife to carve intricate designs and elaborate details in the flesh of a pumpkin.
6 more elements
Dependencies are inferred from the claim text.