Patents by Inventor Danko A. Kobziar
Danko A. Kobziar 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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Patent number: 11448352Abstract: A pin and ring-type plug assembly for plugging a heat exchanger tube to provide a leak resistant seal is provided. The plug assembly is designed such that it can be used to form a high-pressure seal relative to a wide of range of tube inner diameters. The angle of taper of the pin varies along a length of the pin such that the angle of taper is steepest at or adjacent a nose section of the pin and is shallowest at or adjacent an end section of the pin.Type: GrantFiled: March 4, 2021Date of Patent: September 20, 2022Assignee: EST GROUP, INC.Inventors: Danko Kobziar, Ka'ren Sarkissian, Andrew Hall, Alex Kotlyar
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Publication number: 20220282819Abstract: A pin and ring-type plug assembly for plugging a heat exchanger tube to provide a leak resistant seal is provided. The plug assembly is designed such that it can be used to form a high-pressure seal relative to a wide of range of tube inner diameters. The angle of taper of the pin varies along a length of the pin such that the angle of taper is steepest at or adjacent a nose section of the pin and is shallowest at or adjacent an end section of the pin.Type: ApplicationFiled: March 4, 2021Publication date: September 8, 2022Inventors: Danko Kobziar, Ka'ren Sarkissian, Andrew Hall, Alex Kotlyar
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Patent number: 10488295Abstract: A pneumatic test gun for use in performing a leak test on a tube is provided. The pneumatic test gun has a handle for being manually gripped by an operator, a distal end portion for insertion into a tube to be tested, and a proximal end plate from which the distal end portion extends and which is adapted to be abutted against an open end of the tube to be tested. The distal end portion includes a support tube providing a flow path for compressed air into a tube to be tested, a longitudinally-compressible and radially-expandable annular seal located on the support tube, and a self-activating retaining element assembly adapted for radial-expansion into engagement with an inner diameter of the tube to be tested to improve retention of the distal end portion within the tube when the tube is pressurized during a leak test. A method is also provided.Type: GrantFiled: November 9, 2017Date of Patent: November 26, 2019Assignee: EST GROUP, INC.Inventors: Ka′ren Sarkissian, Alex Kotlyar, Danko Kobziar, Andrew Hall, Michael Hvorecny
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Publication number: 20190137354Abstract: A pneumatic test gun for use in performing a leak test on a tube is provided. The pneumatic test gun has a handle for being manually gripped by an operator, a distal end portion for insertion into a tube to be tested, and a proximal end plate from which the distal end portion extends and which is adapted to be abutted against an open end of the tube to be tested. The distal end portion includes a support tube providing a flow path for compressed air into a tube to be tested, a longitudinally-compressible and radially-expandable annular seal located on the support tube, and a self-activating retaining element assembly adapted for radial-expansion into engagement with an inner diameter of the tube to be tested to improve retention of the distal end portion within the tube when the tube is pressurized during a leak test. A method is also provided.Type: ApplicationFiled: November 9, 2017Publication date: May 9, 2019Inventors: Ka'ren Sarkissian, Alex Kotlyar, Danko Kobziar, Andrew Hall, Michael Hvorecny
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Patent number: 9823155Abstract: A test plug for insertion into and plugging of an open end of an elbow pipe is provided. The test plug includes a resilient sealing element and set of gripper segments carried on a shaft. The set of gripper segments are movable relative to the shaft between pipe-gripping and pipe-non-gripping positions such that, when the test plug is placed in sealing and gripping engagement relative to an inner diameter wall of an elbow pipe, the set of gripper segments are positioned in eccentric relation to at least one of the sealing element and the shaft.Type: GrantFiled: August 17, 2015Date of Patent: November 21, 2017Assignee: EST Group, Inc.Inventors: Ka'ren Sarkissian, Alex Kotlyar, Danko Kobziar
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Patent number: 9664588Abstract: A gripper for a test or isolation plug is provided. The gripper includes at least one gripper segment having a pipe or tube confronting surface with a plurality of separate rows of gripper teeth longitudinally-spaced apart on the surface. Each of the separate rows of gripper teeth comprising an alternating array of individual tips and gaps such that each row is serrated along its length.Type: GrantFiled: June 20, 2014Date of Patent: May 30, 2017Assignee: EST Group, Inc.Inventors: Alex Kotlyar, Danko Kobziar, Jim Berneski
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Publication number: 20170052086Abstract: A test plug for insertion into and plugging of an open end of an elbow pipe is provided. The test plug includes a resilient sealing element and set of gripper segments carried on a shaft.Type: ApplicationFiled: August 17, 2015Publication date: February 23, 2017Inventors: Ka'ren Sarkissian, Alex Kotlyar, Danko Kobziar
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Publication number: 20150369689Abstract: A gripper for a test or isolation plug is provided. The gripper includes at least one gripper segment having a pipe or tube confronting surface with a plurality of separate rows of gripper teeth longitudinally-spaced apart on the surface. Each of the separate rows of gripper teeth comprising an alternating array of individual tips and gaps such that each row is serrated along its length.Type: ApplicationFiled: June 20, 2014Publication date: December 24, 2015Inventors: Alex Kotlyar, Danko Kobziar, Jim Berneski
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Patent number: 9038628Abstract: The present invention may be embodied as a system and/or a computer-based method for determining safe operation of a breathing gas system comprising the step of receiving a present oxygen concentration value from an oxygen concentration sensor. The method further comprises the step of receiving, at the computer, a present altitude value from an altimeter of the aircraft and using the computer to calculate an alarm flow rate, where the alarm flow rate is a function of the present oxygen concentration value and the present altitude value. The method may further comprise the step of receiving, at the computer, a present flow value from a flow meter, where the present flow value represents the rate of flow of breathing gas to the user. The method may comprise the step of comparing the calculated alarm flow rate to the received present flow value to determine a safe operation of the oxygen system.Type: GrantFiled: March 9, 2012Date of Patent: May 26, 2015Assignee: AVOX SYSTEMS INC.Inventors: John A. Ratajczak, Danko A. Kobziar
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Patent number: 8973579Abstract: An apparatus for deploying oxygen masks that includes a pre-packaged modular system that does not require manual repacking of oxygen masks by aircraft technicians. The cartridge is for use with a manifold having a passageway in fluid communication with a source of breathable gas. The cartridge includes an end wall, a sidewall extending from the end wall and terminating at a distal end adjacent to an opening. A flexible member defines a chamber inside the cartridge. The chamber is in fluid communication with the passageway when the cartridge is coupled to the manifold. The flexible member has an outlet. A mask assembly is disposed inside the cartridge. The mask assembly has a hose coupled to the outlet of the flexible member. A cover is removably attached to the distal end of the at least one side wall.Type: GrantFiled: November 19, 2012Date of Patent: March 10, 2015Assignee: Avox Systems Inc.Inventors: Joseph Contino, Danko A. Kobziar, Robert L. Schaeffer, Jr., Duard Charles Bennett
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Publication number: 20130133647Abstract: The present invention may be embodied as a system and/or a computer-based method for determining safe operation of a breathing gas system comprising the step of receiving a present oxygen concentration value from an oxygen concentration sensor. The method further comprises the step of receiving, at the computer, a present altitude value from an altimeter of the aircraft and using the computer to calculate an alarm flow rate, where the alarm flow rate is a function of the present oxygen concentration value and the present altitude value. The method may further comprise the step of receiving, at the computer, a present flow value from a flow meter, where the present flow value represents the rate of flow of breathing gas to the user. The method may comprise the step of comparing the calculated alarm flow rate to the received present flow value to determine a safe operation of the oxygen system.Type: ApplicationFiled: March 9, 2012Publication date: May 30, 2013Inventors: John A. Ratajczak, Danko A. Kobziar
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Publication number: 20080245370Abstract: A supplemental oxygen system with a rebreather bag in combination with a pulsed delivery system.Type: ApplicationFiled: February 6, 2008Publication date: October 9, 2008Inventors: Danko A. Kobziar, Steven M. SanFilippo
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Publication number: 20080223457Abstract: A bi-directional valve having a housing with at least one internal gasket contact surface. A spring holds the plate, flapper and gasket against the internal gasket contact surface of the housing. When a predetermined pressure acts on the plate and flapper, the plate, flapper and gasket move away from the gasket contact surface to allow flow through the bi-directional valve in a first direction. To flow in the opposite direction the plate and gasket abut against the housing and the flapper opens to allow flow in an opposite direction. The same flow path is used for flow in either direction through the bi-directional valve.Type: ApplicationFiled: February 7, 2008Publication date: September 18, 2008Inventors: Danko A. Kobziar, Steven M. SanFilippo