Patent US3774556A successfully refreshed from Google Patents.
US3774556A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process and apparatus for introducing liquids into soil
Assignee: Individual
•
Filing: 1971-07-02
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Granted: 1973-11-27
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Expires: 1991-07-02
Abstract
Abstract Toxic liquids are introduced into soil for exterminating subterranean termites therein by drilling a hole through the soil with a rotating drill bit at the end of a pipe and introducing the liquid into the soil at the bit as the hole is drilled. The liquid is transferred to the drill bit through the pipe, the trailing end of which is connected to the drive shaft of an adapter. A manually held drill is engaged with the trailing end of the drive shaft for rotating the same, and this rotary motion is transmitted to the pipe and bit. The adapter also includes a stationary bushing which rotates relative to the drive shaft so that the liquid can be pumped into and through the drive shaft to the pipe interior. The pipe is composed of sections, and therefore additional sections may be added as the penetration of the bit into the soil increases.
Inventors
- 👤 E Poll
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:31
CPC Classifications
A; A01; A01C; A01C23/00; A01C23/02; A01C23/023; A01C23/026; A01M; A01M17/00; A01M17/002
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
483 words
An apparatus for introducing chemicals in a liquid form into soil for treating the soil, said apparatus comprising: a bit having cutting edges positioned at its leading end to bore a hole in the soil as the bit rotates, the bit further having a hollow interior which communicates with the exterior surface of the bit through at least one port; and adapter including a rotatable drive shaft, a collar surrounding the drive shaft, seals between the drive shaft and collar, and annular plates for axially positioning the drive shaft in the collar, the drive shaft having an enlarged portion of cylindrical shape located intermediate the ends thereof and forming shoulders thereon, the drive shaft further having an axially extending passageway and one end configured for connection to a portable drilling device, the leading end of the passageway terminating at a threaded bore which opens out of the other end of the drive shaft and the trailing end of the passageway opening outwardly through the side face of the enlarged cylindrical portion of the shaft, the collar encircling the enlarged cylindrical portion of the shaft and having a port extending through it to its interior, the port being connectable to a source of the liquid so that under pressure the liquid will flow into the interior of the collar and thence into the axial passageway of the drive shaft; the seals being on each side of the trailing end of the passageway in the cylindrical portion of the drive shaft and the port in the collar, the end plates being secured to the ends of the collar and extended over the shoulders on the drive shaft; a plurality of straight pipe sections between the bit and the adapter with the leading pipe section being detachably connected to the bit such that the two will rotate together, each pipe section having a hollow interior terminating at threaded bores which open out of the two ends of the pipe section and the hollow interior of the leading pipe section being in communication with the hollow interior of the bit; and connectors between the adapter and trailing pipe section and between adjacent pipe sections for joining the pipe sections and the drive shaft of the adapter together as a unit which rotates when the drilling device is energized, each connector including a central portion and axially aligned studs projecting from the ends of the central portion, the central portion forming shoulders at the ends of the studs and the studs being externally threaded to thread into the threaded bores to detachably connect the pipe sections and the drive shaft of the adapter together as a unit, each connector having an axially extending passageway extending completely through it so that the liquid in the axial passageway of the drive shaft will flow through the pipe sections to the bit from which it will be discharged into the soil.
Claim 2
Independent Claim
483 words
An apparatus for introducing chemicals in a liquid form into soil for treating the soil, said apparatus comprising: a bit having cutting edges positioned at its leading end to bore a hole in the soil as the bit rotates, the bit further having a hollow interior which communicates with the exterior surface of the bit through at least one port; and adapter including a rotatable drive shaft, a collar surrounding the drive shaft, seals between the drive shaft and collar, and annular plates for axially positioning the drive shaft in the collar, the drive shaft having an enlarged portion of cylindrical shape located intermediate the ends thereof and forming shoulders thereon, the drive shaft further having an axially extending passageway and one end configured for connection to a portable drilling device, the leading end of the passageway terminating at a threaded bore which opens out of the other end of the drive shaft and the trailing end of the passageway opening outwardly through the side face of the enlarged cylindrical portion of the shaft, the collar encircling the enlarged cylindrical portion of the shaft and having a port extending through it to its interior, the port being connectable to a source of the liquid so that under pressure the liquid will flow into the interior of the collar and thence into the axial passageway of the drive shaft; the seals being on each side of the trailing end of the passageway in the cylindrical portion of the drive shaft and the port in the collar, the end plates being secured to the ends of the collar and extended over the shoulders on the drive shaft; a plurality of straight pipe sections between the bit and the adapter with the leading pipe section being detachably connected to the bit such that the two will rotate together, each pipe section having a hollow interior terminating at threaded bores which open out of the two ends of the pipe section and the hollow interior of the leading pipe section being in communication with the hollow interior of the bit; and connectors between the adapter and trailing pipe section and between adjacent pipe sections for joining the pipe sections and the drive shaft of the adapter together as a unit which rotates when the drilling device is energized, each connector including a central portion and axially aligned studs projecting from the ends of the central portion, the central portion forming shoulders at the ends of the studs and the studs being externally threaded to thread into the threaded bores to detachably connect the pipe sections and the drive shaft of the adapter together as a unit, each connector having an axially extending passageway extending completely through it so that the liquid in the axial passageway of the drive shaft will flow through the pipe sections to the bit from which it will be discharged into the soil.
Claim 3
Dependent Claim
31 words
The apparatus according to claim 1 wherein the port in the bit is arranged to discharge the liquid such that at least some of the liquid flows over the cutting edges.
Claim 4
Dependent Claim
25 words
An apparatus accordinG to claim 1 wherein the center portion of each connector is provided with lands to enable a wrench to engage the connector.
Claim 5
Dependent Claim
32 words
An apparatus according to claim 3 wherein the center portion of each connector joining adjacent pipe sections is substantially cylindrical and is substantially the same diameter as the outside of the pipe.
Claim 6
Dependent Claim
333 words
In a soil treating apparatus including a bit having cutting edges at its leading end and a hollow interior which communicates with the external surface of the bit through at least one port and further including a hollow pipe firmly connected at its leading end to the bit with the hollow interior of the pipe communicating with the hollow interior of the bit, an adapter for introducing a liquid into the pipe and for connecting the pipe with a portable drilling device so that the pipe and bit rotate when the drilling device is energized, said adapter comprising: a drive shaft having one end configured for attachment to the portable drilling device and the other end firmly, yet detachably, connected to the trailing end of the pipe, the drive shaft having an enlarged portion of cylindrical shape located intermediate the ends thereof and forming shoulders thereon, the drive shaft further having an axial passageway which communicates with the hollow interior of the pipe where the pipe is firmly connected with the shaft and opens outwardly through the side of the enlarged shaft portion intermediate the shoulders thereon; a collar encircling the enlarged portion and having a port communicating with the interior thereof; and end plates secured to the ends of the collar and extended over the shoulders on the enlarged portion of the shaft to axially position the collar on the shaft; seals in the collar and embracing the cylindrical portion on each side of the end of the passageway in the cylindrical portion; a fluid line connected with the port in the collar for conducting liquid under pressure to the interior of the collar; and a valve associated with the fluid line, whereby when the valve is opened the liquid will flow into the interior of the collar and thence into the axial passageway from which it will flow into the pipe and thereafter into the bit to be discharged therefrom as the bit rotates and bores a hole through the soil.
Claim 7
Dependent Claim
333 words
In a soil treating apparatus including a bit having cutting edges at its leading end and a hollow interior which communicates with the external surface of the bit through at least one port and further including a hollow pipe firmly connected at its leading end to the bit with the hollow interior of the pipe communicating with the hollow interior of the bit, an adapter for introducing a liquid into the pipe and for connecting the pipe with a portable drilling device so that the pipe and bit rotate when the drilling device is energized, said adapter comprising: a drive shaft having one end configured for attachment to the portable drilling device and the other end firmly, yet detachably, connected to the trailing end of the pipe, the drive shaft having an enlarged portion of cylindrical shape located intermediate the ends thereof and forming shoulders thereon, the drive shaft further having an axial passageway which communicates with the hollow interior of the pipe where the pipe is firmly connected with the shaft and opens outwardly through the side of the enlarged shaft portion intermediate the shoulders thereon; a collar encircling the enlarged portion and having a port communicating with the interior thereof; and end plates secured to the ends of the collar and extended over the shoulders on the enlarged portion of the shaft to axially position the collar on the shaft; seals in the collar and embracing the cylindrical portion on each side of the end of the passageway in the cylindrical portion; a fluid line connected with the port in the collar for conducting liquid under pressure to the interior of the collar; and a valve associated with the fluid line, whereby when the valve is opened the liquid will flow into the interior of the collar and thence into the axial passageway from which it will flow into the pipe and thereafter into the bit to be discharged therefrom as the bit rotates and bores a hole through the soil.
References Cited (Backward Citations)
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US2693345A
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US2819875A
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US2752122A
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US3071200A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-11-26 | 1977-05-28 | 1977-11-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-26 | 1981-05-28 | 1981-11-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-26 | 1985-05-28 | 1985-11-27 | $7700.00 | Window Closed / Lapsed |