Pressure activated injection probe
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United States of America Patent
Stats
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Aug 12, 2003
Grant Date -
Jul 3, 2003
app pub date -
Jan 3, 2002
filing date -
Jan 3, 2002
priority date (Note) -
In Force
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Abstract
An injection probe assembly is disclosed for injecting material into subsurface formations for making geotechnical improvements. The probe assembly includes a sheath having an upper end for attaching to a mating tool string and a lower end for receiving a solid drive point. The sheath has a reduced diameter injection area which includes an interior space enclosed by a tubular sidewall, a valve seat, and a plurality of injection ports extending through the sidewall through which materials can be injected laterally. A check valve spool is arranged for sliding movement within the interior space for preventing back-flow of material into the interior space. The spool is seated on the valve seat and covers the injection ports in a first position, and is unseated from the valve seat with the injection ports uncovered in a second position. The spool is responsive to pressure changes of the injected materials.

First Claim
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- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
Patent Owner | Address | |
---|---|---|
KEJR INC | 601 N BROADWAY SALINA KS 67401 |
International Classification(s)
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Carlin, Mike B | Salina, KS | 2 | 3 |
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Maintenance Fees
Fee | Large entity fee | small entity fee | micro entity fee | due date |
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Fee | Large entity fee | small entity fee | micro entity fee |
---|---|---|---|
Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |
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