US3847080A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Remote rock breaking method apparatus therefor
Assignee: ROBERT ECKELS FAMILY TRUST
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Filing: 1973-04-19
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Granted: 1974-11-12
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Expires: 1993-04-19
Abstract
Abstract A method of remotely breaking rock, or the making of predetermined size holes in the earth, in a precise position, suspends an assembly of prepositioned shaped charges in a pendulum array between a distance line of sight signal generator and receiver for such signal for accurately positioning the charges in a predetermined location. The pendulum array may be precisely laterally aligned along the predetermined line, and longitudinally along the line in accordance with predetermined mappings. The method provides a means of explosively forming trenches along the bottom of bodies of deep water, the precision breaking of underwater rocky barriers, etc., using an optimum spacial arrangement of a plurality of charges, the spacial arrangement being determined by testing on similar rock. The apparatus for such method includes articulated sinking rafts supporting such spacially arranged charges which are arranged for lateral and longitudinal leveling.
Inventors
- 👤 R Eckels
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 01:28
CPC Classifications
F; F42; F42D; F42D3/00; F42D3/04
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
196 words
A detonating cord bridle arrangement for a plurality of explosive charges placed in a plurality of parallel rows for essential simultaneously detonating each row of explosives, said bridle arrangement comprising a length of detonating cord extending from an initiating point to a first juncture of a first set of at least two detonating cords, said first set of detonating cords extending from said length of detonating cord at an angle less than 60*; each cord of said set being extended to a pair of second junctures of a pair of second sets of at least two detonating cords, each of the cords of said second sets extending from the respective cords of said first set at an angle less than 30*; each cord of said second sets being arranged for detonating a row of explosive charges; the detonating cords forming said bridle arrangement being of a flexible, unshielded type and the length of the detonation paths of all the cords from said first juncture to each of the charge rows being equal; and float means attached to the detonating cords for maintaining said cords taut to provide separation and prevent sharp directional changes in said cords.
Claim 2
Dependent Claim
196 words
A detonating cord bridle arrangement for a plurality of explosive charges placed in a plurality of parallel rows for essential simultaneously detonating each row of explosives, said bridle arrangement comprising a length of detonating cord extending from an initiating point to a first juncture of a first set of at least two detonating cords, said first set of detonating cords extending from said length of detonating cord at an angle less than 60*; each cord of said set being extended to a pair of second junctures of a pair of second sets of at least two detonating cords, each of the cords of said second sets extending from the respective cords of said first set at an angle less than 30*; each cord of said second sets being arranged for detonating a row of explosive charges; the detonating cords forming said bridle arrangement being of a flexible, unshielded type and the length of the detonation paths of all the cords from said first juncture to each of the charge rows being equal; and float means attached to the detonating cords for maintaining said cords taut to provide separation and prevent sharp directional changes in said cords.
Claim 3
Dependent Claim
48 words
A detonating cord birdle arrangement according to claim 1 wherein each cord of said pair of second sets is extended to a third juncture for third sets of pairs of detonating cords, the cords of said third sets being extended to said plurality of rows of explosive charges.
Claim 4
Dependent Claim
37 words
A detonating cord bridle arrangement according to claim 2 wherein two cords, one from each of two of said third sets, extend to each row of charges forming an additional detonation path to each row of charges.
Claim 5
Dependent Claim
29 words
A detonating cord bridle arrangement according to claim 1 wherein an uneven number of rows of charges are provided, and two cords extend to the middle row of charges.
References Cited (Backward Citations)
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DE1190374B
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US3212437A
Cited
US3311055A
Cited
GB1138654A
Cited
US3687075A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-11-11 | 1978-05-13 | 1978-11-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-11 | 1982-05-13 | 1982-11-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-11 | 1986-05-13 | 1986-11-12 | $7700.00 | Window Closed / Lapsed |