Distribution of driving pressure about a filament's circumference in an extrusion device
First Claim
1. An extrusion device comprising:
- a housing configured to fit in a user'"'"'s hand and shaped to allow manipulation of the housing like a pen, the housing having an outlet and an aperture for introduction of a filament into the housing;
a motor disposed within the housing, the motor comprising a rotor and a motor passage extending through the motor along a central axis of the motor to permit movement of the filament through the motor along the axis;
a driver operatively coupled with the motor via a gear train such that the driver is rotated about the axis of the motor by operation of the motor, the driver having a driver passage extending through the driver along the axis of the motor, the axis of the motor extending through the driver passage and the motor passage, the driver comprising a filament-engaging member positioned in the driver passage and configured to engage the filament extending through the driver passage such that rotation of the driver moves the filament along the axis relative to the driver, the driver positioned such that a first direction of rotation of the driver urges the filament along the axis toward the outlet; and
a heater configured to melt the filament and disposed between the driver and the outlet to receive the filament from the driver.
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Accused Products
Abstract
An extrusion device can include a driver operatively coupled with a motor such that the driver is rotated about an axis by operation of the motor. The driver can have a passage positioned such that the axis extends through the passage. The driver can have a filament-engaging member positioned in the passage and configured to engage a filament extending through the passage such that rotation of the driver moves the filament relative to the driver. The driver can be positioned such that a first direction of rotation of the driver urges the filament along the axis toward an outlet. A heater can be configured to melt the filament and can be disposed between the driver and the outlet to receive the filament from the driver.
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Citations
20 Claims
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1. An extrusion device comprising:
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a housing configured to fit in a user'"'"'s hand and shaped to allow manipulation of the housing like a pen, the housing having an outlet and an aperture for introduction of a filament into the housing; a motor disposed within the housing, the motor comprising a rotor and a motor passage extending through the motor along a central axis of the motor to permit movement of the filament through the motor along the axis; a driver operatively coupled with the motor via a gear train such that the driver is rotated about the axis of the motor by operation of the motor, the driver having a driver passage extending through the driver along the axis of the motor, the axis of the motor extending through the driver passage and the motor passage, the driver comprising a filament-engaging member positioned in the driver passage and configured to engage the filament extending through the driver passage such that rotation of the driver moves the filament along the axis relative to the driver, the driver positioned such that a first direction of rotation of the driver urges the filament along the axis toward the outlet; and a heater configured to melt the filament and disposed between the driver and the outlet to receive the filament from the driver. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification