HELICAL SCREW PILE
First Claim
1. A helical screw pile for penetrating the ground and forming a support, the screw pile comprising:
- a longitudinal shaft having a top end and a bottom end for engaging the ground;
a plurality of helical plates arranged on said longitudinal shaft in decreasing diameter from the bottom end to the top end,a first of said plurality of helical plates being disposed toward the bottom of said shaft and having a first diameter; and
a second of said plurality of helical plates having a second diameter that is smaller than said first diameter, said first of said plurality of helical plates having a trailing edge abutting leading edge of said second of said helical plates.
1 Assignment
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Accused Products
Abstract
A helical screw pile includes a longitudinal shaft having a top end and a bottom end with a plurality of helical plates arranged on the shaft in increasing diameter from the top to the bottom. The largest diameter helical plate is located toward the bottom of the shaft. A second helical plate having a diameter smaller than that of the first plate is located above the first helical plate. A smaller third helical plate is located above the second helical plate so that the smallest is located toward the top of the shaft. The helical plates can be spaced apart along the shaft or coupled together in an end-to-end manner to form a continuous helix.
11 Citations
28 Claims
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1. A helical screw pile for penetrating the ground and forming a support, the screw pile comprising:
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a longitudinal shaft having a top end and a bottom end for engaging the ground; a plurality of helical plates arranged on said longitudinal shaft in decreasing diameter from the bottom end to the top end, a first of said plurality of helical plates being disposed toward the bottom of said shaft and having a first diameter; and a second of said plurality of helical plates having a second diameter that is smaller than said first diameter, said first of said plurality of helical plates having a trailing edge abutting leading edge of said second of said helical plates. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A helical screw pile adapted for penetrating the ground, the screw pile comprising:
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a longitudinal shaft having a top end and a ground engaging bottom end; a first helical plate having a first diameter, a leading end and a trailing end; a second helical plate having a second diameter smaller than said first diameter and having a leading end aligned with the trailing end of the first helical plate; a third helical plate having a third diameter smaller than said second diameter, a leading end and a trailing end, said leading end being aligned with and abutting said trailing end of the second helical plate; and said first plate being located toward said bottom end of said shaft with respect to said second plate. - View Dependent Claims (12, 13, 14, 15, 16)
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17. A ground anchor for penetrating the ground to anchor a structure, the ground anchor comprising:
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a shaft having a longitudinal dimension with a ground-engaging first leading end for penetrating the ground and a second trailing end for coupling to a drive assembly and to the structure; a first helical plate coupled to said shaft proximate said first end, said first helical plate having a trailing end and a first diameter and requiring a first torque for penetrating the ground; and a second helical plate coupled to said shaft and positioned toward said second trailing end of said shaft, said second helical plate having a leading end contacting said trailing end of said first helical plate, a second diameter less than said first diameter and requiring a second torque for penetrating the ground that is less than said first torque, where the greatest torque is concentrated proximate said first end of said shaft upon rotation of said shaft and penetration into the ground. - View Dependent Claims (18, 19, 20, 21, 22, 24, 25, 27)
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23. (canceled)
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26. (canceled)
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28. (canceled)
Specification