Explosive and thermic compositions or charges – Structure or arrangement of component or product – Particles of diverse size or shape
Patent
1984-03-08
1985-06-11
Lechert, Jr., Stephen J.
Explosive and thermic compositions or charges
Structure or arrangement of component or product
Particles of diverse size or shape
149 2, 149 42, 149113, 149114, 149 76, 149 77, 102204, C06B 4502
Patent
active
045226652
ABSTRACT:
A primer mix which contains from 26 to 66 weight percent titanium and from 74 to 44 weight percent potassium perchlorate having a density of from 68 to 81 percent of crystal density such that the mix is stable at high temperature up to 525.degree. F. for more than 100 hours without degradation and requires a relatively high amount of impact energy greater than 4 ft.-lbs. in order to ignite it. Alternatively, the primer mix contains from 40 to 74 weight percent zirconium and from 60 to 26 weight percent potassium perchlorate having the above density. The primer mix is used in a percussion primer for initiating combustion or in a percussion initiator for detonating a high-order explosive, as used for example within wellbores in the oil and gas industry.
REFERENCES:
patent: 3914143 (1975-10-01), Sterling
Don Yates Letter Dated Jul. 16, 1981 to Colle, with 6 attached drawings.
Blueprint No. X51-1965, on High Temperature Percussion Detonator.
Barbara Taylor, Letter Dated Mar. 15, 1982 to Larson, with 3 Attached Purchase Order Sheets.
Peck, Cox and Yates, Report Dated Jul. 23, 1982 Entitled Final Report on Assembly and Test of the Design for 10-Second Delay Device.
Oestreich and Smith, Report Dated Feb. 16, 1983 Entitled Final Report on Development Testing of the 51-2592-1, Core Gun Cartridge.
Oestrich Michael
Yates, Jr. Donald N.
GEO Vann, Inc.
Lechert Jr. Stephen J.
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