Mandrel and a method for soil compaction
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United States of America Patent
Stats
-
Nov 26, 2019
Grant Date -
Apr 4, 2019
app pub date -
Dec 1, 2018
filing date -
Dec 2, 2017
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A method and a mandrel for forming a cavity at a target location. The mandrel may include a main drilling shaft, a plurality of T-shaped elements, a hollow-cylindrical-shaped element, and a plurality of parallelepiped-shaped stiffener plates. The main drilling shaft may include a hammer insertion part positioned at a first end of the main drilling shaft, a bore head positioned at a second end of the main drilling shaft, and a medium part positioned between the hammer insertion part and the bore head. The plurality of T-shaped elements may be mounted adjacently around the medium part in a way such that forming a closed octagonal from a top-view of the mandrel. A first size of a first cross-section at a first location from a top-view of the plurality of T-shaped elements around the medium part may be larger than a second size of a second cross-section at a second location from the top-view.
First Claim
Other Claims data not available
Family
International Classification(s)
- 2018 Application Filing Year
- E02D Class
- 424 Applications Filed
- 306 Patents Issued To-Date
- 72.17 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 1 Citation Count
- E02D Class
- 48.51 % this patent is cited more than
- 6 Age
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | May 26, 2027 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | May 26, 2031 |
