Patents by Inventor Earl Reckzin

Earl Reckzin 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).

  • Method of gassing emulsion explosives and explosives produced thereby
    Patent number: 6855219
    Abstract: The present invention provides a method for producing a gassed explosive composition, comprising the steps of: (a) providing a base explosive composition comprising at least an emulsion explosive composition containing a source of ammonium ions; and, (b) combining the base explosive composition with a gassing solution subsequent to the formation of the emulsion explosive composition, the gassing solution comprising a pH lowering agent. A gassed emulsion explosive composition is also disclosed.
    Type: Grant
    Filed: October 2, 2002
    Date of Patent: February 15, 2005
    Assignee: ETI Holdings Corp.
    Inventors: Ivana Alilovic, Earl Reckzin
  • Method of gassing emulsion explosives and explosives produced thereby
    Publication number: 20040065396
    Abstract: The present invention provides a method for producing a gassed explosive composition, comprising the steps of: (a) providing a base explosive composition comprising at least an emulsion explosive composition containing a source of ammonium ions; and, (b) combining the base explosive composition with a gassing solution subsequent to the formation of the emulsion explosive composition, the gassing solution comprising a pH lowering agent. A gassed emulsion explosive composition is also disclosed.
    Type: Application
    Filed: October 2, 2002
    Publication date: April 8, 2004
    Applicant: ETI Holdings Corp.
    Inventors: Ivana Alilovic, Earl Reckzin
  • Ammonium nitrate fuel oil blasting composition having improved water resistance
    Patent number: 6113714
    Abstract: A water resistant blasting explosive comprises an organic carbonaceous fuel, an inorganic oxidizing salt, and particulate filler material, wherein prior to exposing the particulate filler material and the inorganic oxidizing salt to the organic carbonaceous fuel, from about 15 to about 60 wt % of the particulate filler material and the inorganic oxidizing salt are retained on a Tyler 10 sieve, from about 15 to about 60 wt % of the particulate filler material and the inorganic oxidizing salt are retained on a Tyler 14 sieve and from about 20 to about 60 wt % of the particulate filler material and the inorganic oxidizing salt are retained on a Tyler 20 sieve. The explosive is further characterized in that it is effectively free of gelling agents. The explosive has good water resistance and explosive energy.
    Type: Grant
    Filed: April 29, 1998
    Date of Patent: September 5, 2000
    Assignee: Eti Canada Inc.
    Inventors: Andrew Richard, Earl Reckzin
  • Method for the production of an ammonium nitrate fuel oil blasting composition having improved water resistance
    Patent number: 5925846
    Abstract: A method of increasing the water resistance of a blasting explosive comprising an organic carbonaceous fuel, an inorganic oxidizing salt having a particular particle size distribution and a gelling agent comprising the step of adding to the blasting explosive a particulate filler material. The particle size distribution of the particulate filler material and the inorganic oxidizing salt are selected to increase the water resistance of the blasting explosive.
    Type: Grant
    Filed: May 28, 1996
    Date of Patent: July 20, 1999
    Assignee: ETI Canada
    Inventors: Andrew Richard, Grant Simpson, Earl Reckzin
  • Method for controlled refining of explosive compositions
    Patent number: 5841055
    Abstract: An apparatus for the controlled refining of an emulsion explosive composition is shown. The apparatus includes a pump for pumping the pumpable explosive composition, a conduit for transporting the explosive composition away from the pump, and a refining or shear valve located in the conduit. Also provided is control instrumentation which allows the amount of refining to be monitored. The preferred control instrumentation comprises a first pressure indicator located on an upstream side of said valve, the second pressure indicator located on the downstream side of said valve, and an adjustor associated with the valve to allow the valve to be adjusted to produce a predetermined pressure difference between the first and second pressure indicators.
    Type: Grant
    Filed: June 11, 1997
    Date of Patent: November 24, 1998
    Assignee: ETI Explosives Technologies International (Canada) Ltd.
    Inventors: Allan Hooper, Les Collins, Earl Reckzin, Andrew Richard, Tom Palangio, Mark Kelly, Grant Simpson
  • Method and apparatus for controlled refining of explosive compositions
    Patent number: 5672839
    Abstract: An apparatus for the controlled refining of an emulsion explosive composition is shown. The apparatus includes a pump for pumping the pumpable explosive composition, a conduit for transporting the explosive composition away from the pump, and a refining or shear valve located in the conduit. Also provided is control instrumentation which allows the amount of refining to be monitored. The preferred control instrumentation comprises a first pressure indicator located on an upstream side of said valve, the second pressure indicator located on the downstream side of said valve, and an adjustor associated with the valve to allow the valve to be adjusted to produce a predetermined pressure difference between the first and second pressure indicators.
    Type: Grant
    Filed: October 26, 1995
    Date of Patent: September 30, 1997
    Assignee: ETI Explosives Technologies (Canada) Ltd.
    Inventors: Alan Hooper, Les Collins, Earl Reckzin, Andrew Richard, Mark Kelly, Tom Palangio, Grant Simpson
  • Ammonim nitrate fuel oil blasting composition having improved water resistance
    Patent number: 5480500
    Abstract: A blasting explosive comprises an organic carbonaceous fuel, an inorganic oxidizing salt, a gelling agent and particulate filler material, wherein prior to exposing the particulate filler material and the inorganic oxidizing salt to the organic carbonaceous fuel and the gelling agent, from about 15 to about 60 wt % of the particulate filler material and the inorganic oxidizing salt are retained on a Tyler 10 sieve, from about 15 to about 60 wt % of the particulate filler material and the inorganic oxidizing salt are retained on a Tyler 14 sieve and from about 20 to about 60 wt. % of the particulate filler material and the inorganic oxidizing salt are retained on a Tyler 20 sieve.
    Type: Grant
    Filed: April 11, 1995
    Date of Patent: January 2, 1996
    Assignee: ETI Explosives
    Inventors: Andrew Richard, Grant Simpson, Earl Reckzin