Patent US4004642A successfully refreshed from Google Patents.
US4004642A
Expired / Lapsed
US
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Tround terra-drill processes and apparatus
Assignee: Tround International Inc
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Filing: 1975-12-08
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Granted: 1977-01-25
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Expires: 1995-12-08
Abstract
Abstract Processes and apparatus in the field of Terradynamics, e. g. projectile penetration into soils and rocks, employing "open chamber" firing systems using "Trounds" (triangular rounds of ammunition). Included are salvo firings of small calibre projectiles for "shock wave" interaction drilling application of residual gun gases to actuate drill heads and/or reamers; a continuous self-contained feed system for feeding ammunition to be fired and removing and storing the used cases; remote self contained powering of the ammunition feed and storage by recoil of the gun, residual gun gases, electrical batteries, and/or combinations thereof; absorption of excess residual gun gas in an ambient environment of over 5000 psi external to the gun; and automatic clearing of the gun barrels from mud and or debris when embedded in a high pressure drilling mud external to a gun drill.
Inventors
- 👤 David Dardick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:20
CPC Classifications
E; E21; E21B; E21B4/00; E21B4/02; E21B7/00; E21B7/007
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
150 words
A terradynamic apparatus for drilling through soil and rock and capable of penetration of hard rock to great depths comprising: an open chamber salvo gun for firing salvos of small calibre projectiles, a self-contained feed system for successively feeding tiangular rounds of ammunition of open chamber salvo ammunition to said gun, mechanical pulverizing means disposed in proximity to said gun for pulverizing the fractured rock, rock removal means disposed in proximity to said gun for removal of pulverized rock from the areas about said gun, self-contained powering means for operating said gun, said feed system, said pulverizing means, and said removal means, a self-contained pod and support means for all of said gun, ammunition, feed system pulverizing means, and removal means, said terradynamic apparatus being operated independently of the surface of the earth for repetitively firing salvos to fracture the rock, pulverize the fractured rock, and displace the pulverized rock.
Claim 2
Dependent Claim
150 words
A terradynamic apparatus for drilling through soil and rock and capable of penetration of hard rock to great depths comprising: an open chamber salvo gun for firing salvos of small calibre projectiles, a self-contained feed system for successively feeding tiangular rounds of ammunition of open chamber salvo ammunition to said gun, mechanical pulverizing means disposed in proximity to said gun for pulverizing the fractured rock, rock removal means disposed in proximity to said gun for removal of pulverized rock from the areas about said gun, self-contained powering means for operating said gun, said feed system, said pulverizing means, and said removal means, a self-contained pod and support means for all of said gun, ammunition, feed system pulverizing means, and removal means, said terradynamic apparatus being operated independently of the surface of the earth for repetitively firing salvos to fracture the rock, pulverize the fractured rock, and displace the pulverized rock.
Claim 3
Dependent Claim
25 words
In the apparatus of claim 1, said self-contained powering means being energized by one of explosive gun gases, gun recoil, electrical batteries, and combinations thereof.
Claim 4
Dependent Claim
34 words
In the apparatus of claim 1, said salvo firing gun and triangular rounds of OK ammunition producing a time delayed pattern of fired projectiles to interact with the rock in an interaction shock wave.
Claim 5
Dependent Claim
28 words
In the apparatus of claim 1, said pod containing absorption means to absorb explosive gases produces by firing said gun without releasing said gases external of the pod.
Claim 6
Dependent Claim
59 words
In the apparatus of claim 1, an evacuator system for said gun for preventing pressurized external drilling mud and debris from entering the gun barrels, said evacuator system including valve means for closing the barrels of the gun, and means responsive to the high pressure gases produced upon firing for opening said valve means in advance of the projectiles.
Claim 7
Dependent Claim
69 words
A terradynamics process for drilling rock comprising the steps of: explosively firing a salvo of small calibre projectiles into the rock at a velocity sufficient to fracture the rock, time delaying the projectiles of each salvo such that a later projectile of the salvo strikes in coincident relationship with the shock wave created by an earlier projectile thereby to provide shock wave enhancement with resulting improvement in rock fracturing.
Claim 8
Dependent Claim
69 words
A terradynamics process for drilling rock comprising the steps of: explosively firing a salvo of small calibre projectiles into the rock at a velocity sufficient to fracture the rock, time delaying the projectiles of each salvo such that a later projectile of the salvo strikes in coincident relationship with the shock wave created by an earlier projectile thereby to provide shock wave enhancement with resulting improvement in rock fracturing.
Claim 9
Dependent Claim
28 words
In the process of claim 6, the step of repetitively firing of such salvos in a time sequence, and pulverizing and removing the rock in the fractured regions.
Claim 10
Dependent Claim
42 words
In the process of claim 6, the added step of mechanically pulverizing and removing the rock in the fractured areas and employing one of the gun gases and recoil of the gun to power the mechanical pulverizing and removal of the rock.
Claim 11
Dependent Claim
32 words
In the process of claim 6, the added step of chemically absorbing the gases created by the firing of the salvo without releasing the gases into the environment of the fractured rock.
Claim 12
Dependent Claim
47 words
In the process of claim 6, the added step of firing such salvo into the rock in the presence of an environmental drilling mud at a pressure exceeding 5000 psi by diverting portions of the explosive gases released behind the projectiles to areas ahead of the projectiles.
Claim 13
Dependent Claim
43 words
In the process of claim 6, the steps of repetitively firing such salvos in a regular time recurring manner and directing said gun gases and gun recoil to power at least one of said gun, ammunition feed system, pulverizing means, and removal means.
Claim 14
Dependent Claim
83 words
A terrodynamic process for drilling rock by the use of a self-contained drilling unit that is lowered into the ground and automatically fires projectiles into the rock at a velocity sufficient to fracture the rock and wherein the self-contained drilling unit contains a sufficient number of projectiles to drill to great distances, the improvement in said process wherein the projectiles being fired of small calibre and a salvo of such projectiles are fired employing triangular rounds of ammunition and an open chamber gun.
Claim 15
Dependent Claim
83 words
A terrodynamic process for drilling rock by the use of a self-contained drilling unit that is lowered into the ground and automatically fires projectiles into the rock at a velocity sufficient to fracture the rock and wherein the self-contained drilling unit contains a sufficient number of projectiles to drill to great distances, the improvement in said process wherein the projectiles being fired of small calibre and a salvo of such projectiles are fired employing triangular rounds of ammunition and an open chamber gun.
Claim 16
Dependent Claim
15 words
In the process of claim 12, the additional steps of cooling said self-contained drilling unit.
Claim 17
Dependent Claim
24 words
In the process of claim 12, the additional steps of cooling said self-contained drilling unit in response to the detection of high temperatures therein.
Claim 18
Dependent Claim
15 words
In the process of claim 14, the cooling being performed by use of solidified gases.
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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) | 1980-01-25 | 1980-07-26 | 1981-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-01-25 | 1984-07-26 | 1985-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-01-25 | 1988-07-26 | 1989-01-25 | $7700.00 | Window Closed / Lapsed |