Method and device for micro blasting with reusable blasting rods and electrically ignited cartridges
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Oct 13, 2020
Grant Date -
Oct 29, 2015
app pub date -
Apr 25, 2014
filing date -
Apr 26, 2013
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An apparatus, method and system to electrically ignite small explosive cartridges in boulders, bedrock, concrete etc. to split or shape them. A propellant or explosive charge is electrically ignited directly by an inert electrical igniter inserted therein that melts at high temperature a bridge wire(s) or ribbon(s) with AC or DC electrical current. The bridge melts normally at over 2,000 degrees F. which will ignite the propellant or explosive. With sufficient voltage and amperage such as 110 volt AC wall current ionization takes place along the pathway of the melting bridge, which melts at approximately 2,000 degrees F., and a large electrical arc forms at approximately 5,000 degrees F. that more reliably ignites the propellant or explosive with increased blast power. A reusable blasting rod includes an external groove for a blasting wire, a counterweight for better tamping, which has a cradle for heavy objects to utilize the Newton Kinetic effect.
First Claim
Other Claims data not available
Family
International Classification(s)
- 2014 Application Filing Year
- F42D Class
- 58 Applications Filed
- 52 Patents Issued To-Date
- 89.66 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 0 Citation Count
- F42D Class
- 0 % this patent is cited more than
- 5 Age
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Apr 13, 2028 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Apr 13, 2032 |
