US3712220A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Explosive charge assembly and its use in seismic prospecting
Assignee: Imperial Chemical Industries Ltd
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Filing: 1970-03-13
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Granted: 1973-01-23
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Expires: 1990-03-13
Abstract
Abstract A method of assembling blasting explosive charges on an initiating line of detonating cord which method is especially advantageous in seismic prospecting involves sticking the charges on the detonating cord by means of a layer of adhesive. The invention also includes the blasting assembly comprising the detonating cord and adhering charges, a blasting charge having a layer of adhesive for attaching the charge to detonating cord and a method of seismic prospecting using the blasting assembly on or under the ground surface and substantially parallel thereto.
Inventors
- 👤 D Marke
- 👤 P Thompson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 10:57
CPC Classifications
G; G01; G01V; G01V1/00; G01V1/02; G01V1/104; G01V1/13; E; E02; E02F; E02F5/00; E02F5/02; E02F5/10; E02F5/102; F; F41; F41H; F41H11/00; F41H11/12; F41H11/14; F42; F42D; F42D1/00; F42D1/04
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
58 words
A method as claimed in claim 1 wherein the individual explosive charges comprise a deformable explosive composition, contained in a flexible container and each charge is stuck to the cord by applying a layer of adhesive material to an external surface portion of the container and wrapping that portion of the container around the line of detonating cord.
Claim 2
Dependent Claim
43 words
A method as claimed in claim 2 wherein the width of the layer of adhesive material is greater than the circumference of the detonating cord and the part of the adhesive layer in excess of that contacting the cord is stuck to itself.
Claim 3
Dependent Claim
52 words
A method as claimed in claim 2 wherein the width of the layer of adhesive material is greater than the circumference of the detonating cord and the part of the adhesive layer in excess of that contacting the cord overlaps the portion of the charge surrounding the cord and is stuck thereto.
Claim 4
Dependent Claim
52 words
A method of seismic prospecting comprising assembling a series of explosive charges on an initiating line of detonating cord by the method of claim 1, laying the resulting assembly on or under the surface of a prospect area and substantially parallel to said surface, and detonating the detonating cord and adherent charges.
Claim 5
Dependent Claim
24 words
A method as in claim 5 wherein the adherent charges are assembled on the detonating cord as the assembly is being laid in position.
Claim 6
Dependent Claim
42 words
A method as in claim 5 including burying the assembly by passing it down through a conduit attached to a plough member which penetrates the upper ground layer of the prospect area and forms a temporary opening therein to receive the assembly.
References Cited (Backward Citations)
US2999743A
Cited
US3374737A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-01-23 | 1976-07-24 | 1977-01-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-23 | 1980-07-24 | 1981-01-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-23 | 1984-07-24 | 1985-01-23 | $7700.00 | Window Closed / Lapsed |