Drill head and method for producing a vertical borehole in the ground
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United States of America Patent
Stats
-
Jul 9, 2024
Grant Date -
May 11, 2023
app pub date -
Jul 21, 2020
filing date -
Jul 24, 2019
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A drill head and a method having a body connected to a rotary drive of a drilling device, for loosening the ground at a face of the borehole, having a discharge device for discharging the loosened ground to a suction unit for suctioning a conveying medium, wherein the discharge device has at least one opening in the region of the drilling tools The at least one opening is connected to a suction box which has, at an end opposite the opening a connector opening for connecting to a conveying line, that acceleration exerted on the loosened ground in the region of the suction box moves loosened ground through the opening into the suction box wherein the loosened ground acquired by the conveying medium in the opening and/or in the suction box and is discharged.
First Claim
Other Claims data not available
Family
International Classification(s)
- 2020 Application Filing Year
- E21D Class
- 89 Applications Filed
- 68 Patents Issued To-Date
- 76.41 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 0 Citation Count
- E21D Class
- 0 % this patent is cited more than
- 1 Age
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 3.5 Year Payment | $1600.00 | $800.00 | $400.00 | Jan 9, 2028 |
| 7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Jan 9, 2032 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Jan 9, 2036 |
