Patents by Inventor George C. Mei
George C. Mei has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20190023629Abstract: A priming mix composition includes between about 30% and about 60% of at least one of KDNBF, dinol, and tetrazene as a primary explosive; between about 10% and about 35% of a metallocene as a propagation aid; between about 5% and about 40% of at least one nitrate, peroxide, or oxide, as an oxidizer; between about 5% and about 25% of at least one of nitrocellulose or PETN as a reactive fuel; and a fuel. The metallocene is preferable ferrocene.Type: ApplicationFiled: September 22, 2017Publication date: January 24, 2019Inventors: Toni M. Whaley, Morris C. Buenemann, JR., George C. Mei
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Publication number: 20110011502Abstract: An improved priming mix of the type including an initiator, fuel, and oxidizer, and pyrotechnic component. The improvement being the inclusion of between about 3% and about 20% propellant superfines, the superfines comprising particles less than 100 ?m.Type: ApplicationFiled: April 9, 2010Publication date: January 20, 2011Inventors: George C. Mei, Duane E. Lowe
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Publication number: 20100032063Abstract: The present invention is directed to a lead-free, nontoxic pyrotechnic composition, comprising: 30-80 wt % of bismuth subnitrate; and 10-50 wt % of a fuel, wherein all weight percents are based on the total weight of the composition. The present invention is also directed to a lead-free, nontoxic priming composition, comprising: 20-80 wt % of the above nontoxic pyrotechnic composition; 20-50 wt % of an initiator explosive; and 2-10 wt % of a sensitizer, wherein all weight percents are based on the total weight of the composition.Type: ApplicationFiled: February 10, 2005Publication date: February 11, 2010Inventors: George C. Mei, James W. Pickett
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Patent number: 6878221Abstract: The present invention is directed to a lead-free, nontoxic pyrotechnic composition, comprising: 30-80 wt % of bismuth subnitrate; and 10-50 wt % of a fuel, wherein all weight percents are based on the total weight of the composition. The present invention is also directed to a lead-free, nontoxic priming composition, comprising: 20-80 wt % of the above nontoxic pyrotechnic composition; 20-50 wt % of an initiator explosive; and 2-10 wt % of a sensitizer, wherein all weight percents are based on the total weight of the composition.Type: GrantFiled: June 16, 2003Date of Patent: April 12, 2005Assignee: Olin CorporationInventors: George C. Mei, James W. Pickett
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Publication number: 20040154713Abstract: The present invention is directed to a lead-free, non-toxic priming composition, comprising: 20-40 wt % of a dinitrobenzofuroxan salt; 2-10 wt % of a sensitizer; 0-30 wt % of an oxidizer; and 45-70 wt % of an abrasive, wherein all weight percents are based on the total weight of said composition.Type: ApplicationFiled: December 23, 2003Publication date: August 12, 2004Applicant: Olin CorporationInventors: George C. Mei, James W. Pickett
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Patent number: 5567252Abstract: A nontoxic primer mix for use in a percussive primer, especially of the Boxer type which principally comprises diazodinitrophenol, iron oxide and boron. The composition may also contain a nitrate ester as a fuel, and tetrazene as a secondary explosive.Type: GrantFiled: January 9, 1992Date of Patent: October 22, 1996Assignee: Olin CorporationInventors: George C. Mei, James W. Pickett
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Patent number: 5417160Abstract: There is provided a lead-free primer mix having high sensitivity. The primer mix contains an initiating explosive, a sensitizer, a propellant, calcium silicide and an oxidizer. The ignition exhaust products are essentially free of toxic oxides such as lead oxide, barium oxide and antimony oxide.Type: GrantFiled: December 1, 1993Date of Patent: May 23, 1995Assignee: Olin CorporationInventors: George C. Mei, James W. Pickett
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Patent number: 5167736Abstract: A nontoxic primer mix for use in a percussive primer, especially of the Boxer type which principally comprises diazodinitrophenol and boron. The composition may also contain calcium carbonate or strontium nitrate as an oxidizer, a nitrate ester as a fuel, and tetrazene as a secondary explosive.Type: GrantFiled: November 4, 1991Date of Patent: December 1, 1992Assignee: Olin CorporationInventors: George C. Mei, James W. Pickett
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Patent number: 5113764Abstract: The present invention is direct to primer housings to secure a semiconductor bridge device in close proximity to an energetic charge. The primar housings are formed from an electrically conductive alloy and contain a dielectric medium disposed between components to maintain electrical isolation. The housings are characterized by high ductility to resist fracture during assembly or handling. In certain embodiments, one or both lead wires are removed to reduce the potential for lead wire breakage or separation.Type: GrantFiled: May 13, 1991Date of Patent: May 19, 1992Assignee: Olin CorporationInventors: Frank N. Mandigo, George C. Mei, Julius C. Fister
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Patent number: 5029529Abstract: The present invention is direct to primer housings to secure a semiconductor bridge device in close proximity to an energetic charge. The primer housings are formed from an electrically conductive alloy and contain a dielectric medium disposed between components to maintain electrical isolation. The housings are characterized by high ductility to resist fracture during assembly or handling. In certain embodiments, one or both lead wires are removed to reduce the potential for lead wire breakage or separation.Type: GrantFiled: September 25, 1989Date of Patent: July 9, 1991Assignee: Olin CorporationInventors: Frank N. Mandigo, George C. Mei, Julius C. Fister
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Patent number: 5027707Abstract: An electric primer using an intrinsic conductive pyrotechnic mixture is improved by the addition of a carbon layer between the inner and outer electrodes and the mixture. The carbon layer provides a parallel resistive current path between the electrodes in addition to the path through the conductive mixture. The addition of a carbon layer also increases the operable temperature range of the primer. The high energy firing threshold of the intrinsically conductive pyrotechnic mixture and the additional dissipative current path through the carbon layer coact to further reduce the sensitivity of the primer to RF radiation and ESD hazards.Type: GrantFiled: May 8, 1989Date of Patent: July 2, 1991Assignee: Olin CorporationInventor: George C. Mei
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Patent number: 4994125Abstract: An electric primer has an intrinsically conductive pyrotechnic mixture consisting of a metal powder fuel, an alkaline oxidizer, and a sensitizing fuel. The primer mixture preferably consists of about 27% titanium metal powder, about 68% potassium chlorate, and 5% boron as the sensitizing fuel. Lead thiocyanate may also be added as a further sensitizing fuel. The primer is advantageously adapted for use in airbag inflators in an automobile passive restraint system.Type: GrantFiled: May 8, 1989Date of Patent: February 19, 1991Assignee: Olin CorporationInventor: George C. Mei
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Patent number: 4689185Abstract: A priming method for rimfire cartridges is disclosed in which a propellant solution is disposed adjacent a centrifugally located primer material in a rimfire cartridge. The solvent is then evaporated to leave a propellant film near the primer material in order to provide slower, more uniform ignition to thereby allow use of propellant powders which would otherwise be too fast or too sensitive.Type: GrantFiled: July 25, 1986Date of Patent: August 25, 1987Assignee: Olin CorporationInventors: Frances G. Lopata, George C. Mei
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Patent number: 4675059Abstract: This invention relates to priming compositions for ammunitions containing manganese dioxide as oxidizer agent in the primer mix, and to the rimfire cartridge containing dinol, manganese dioxide, tetrazene and glass.Type: GrantFiled: February 27, 1986Date of Patent: June 23, 1987Assignee: Olin CorporationInventor: George C. Mei
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Patent number: 4674409Abstract: This invention relates to non-toxic, non-corrosive, lead-free rimfire ammunition.Type: GrantFiled: June 2, 1986Date of Patent: June 23, 1987Assignee: Olin CorporationInventors: Frances G. Lopata, George C. Mei