Device for creating a trench in a ground surface
First Claim
1. A device for creating a trench in a ground surface, the device comprising:
- a frame having a handle, an axle and a platform;
a wheel mounted to the axle to at least partially support the frame for movement on the ground surface;
a motor mounted to the platform, the motor configured to rotate a drive shaft, the drive shaft including a proximal end portion, a distal end portion and a mounting flange located near the distal end portion;
a primary blade removably mountable to the drive shaft near the distal end portion of the drive shaft, the primary blade having a primary hub and at least three primary tines extending radially from the primary hub, the primary blade having a first radius measured from a geometric center of the primary hub to a free end of any one of the at least three primary tines;
a secondary blade removably mountable to the primary hub, the secondary blade having a secondary hub and at least three secondary tines extending radially from the secondary hub, the secondary blade having a second radius measured from a geometric center of the secondary hub to a free end of any one of the at least three secondary tines, the first radius being greater than the second radius; and
a blade guard mounted to the platform and generally covering the primary and secondary blades in an assembled configuration.
1 Assignment
0 Petitions
Accused Products
Abstract
A device for creating a trench in a ground surface includes a frame, an axle and a platform. A wheel is mounted to the axle and a motor is mounted to the platform. The motor is configured to rotate a drive shaft. A primary blade is removably mountable to the drive shaft. The primary blade has a first radius measured from a geometric center of the primary hub to a free end of a largest of the at least three primary tines. A second blade is removably mountable to the primary hub. The secondary blade has a second radius measured from a geometric center of the secondary hub to a free end of a largest of the at least three secondary tines. The first radius is greater than the second radius. A blade guard is mounted to the platform and generally covers the primary and secondary blades in an assembled configuration.
45 Citations
15 Claims
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1. A device for creating a trench in a ground surface, the device comprising:
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a frame having a handle, an axle and a platform; a wheel mounted to the axle to at least partially support the frame for movement on the ground surface; a motor mounted to the platform, the motor configured to rotate a drive shaft, the drive shaft including a proximal end portion, a distal end portion and a mounting flange located near the distal end portion; a primary blade removably mountable to the drive shaft near the distal end portion of the drive shaft, the primary blade having a primary hub and at least three primary tines extending radially from the primary hub, the primary blade having a first radius measured from a geometric center of the primary hub to a free end of any one of the at least three primary tines; a secondary blade removably mountable to the primary hub, the secondary blade having a secondary hub and at least three secondary tines extending radially from the secondary hub, the secondary blade having a second radius measured from a geometric center of the secondary hub to a free end of any one of the at least three secondary tines, the first radius being greater than the second radius; and a blade guard mounted to the platform and generally covering the primary and secondary blades in an assembled configuration. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 13, 14)
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10. A device for creating a trench in a ground surface, the device comprising:
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a frame having an axle and a platform; a wheel mounted to the axle to at least partially support the frame for movement on the ground surface; a motor mounted to the platform, the motor configured to rotate a drive shaft, the drive shaft including a proximal end portion, a distal end portion and a mounting flange located near the distal end portion; a primary blade removably mountable to the mounting flange, the primary blade having a primary hub and at least one tine extending radially from the primary hub; and a secondary blade removably mountable to the primary hub; a wide blade guard removably mountable to the platform in a trenching or edging configuration; and a narrow blade guard separately and removably mountable to the platform in a cable laying configuration, the secondary blade mounted to the primary hub and the wide blade guard mounted to the platform in the trenching or edging configuration. - View Dependent Claims (11, 12, 15)
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Specification