Patents by Inventor Peter A. Topaz
Peter A. Topaz 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: 11448232Abstract: A propeller blade includes a body configured to extend radially from the hub of a propeller. The body can include a front surface, a back surface, a leading edge, and a trailing edge. The top of the body can form a tippet that generally transitions the front and back surfaces from extending in a generally radial direction to a generally axial direction. The tippet can reduce radial flow and force losses, redirect the radial flow in an axial direction, reduce the exit flow area of the propeller, and increase the inlet flow area of the propeller. The front surface of the blade can have a planar configuration that prevents or reduces the creation of low or negative pressure across the front surface of the blade and associated cavitation.Type: GrantFiled: May 20, 2019Date of Patent: September 20, 2022Assignee: SP TECHInventors: Stephen R. Topaz, Peter A. Topaz, Warren L. Powers
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Publication number: 20200025212Abstract: A propeller blade includes a body configured to extend radially from the hub of a propeller. The body can include a front surface, a back surface, a leading edge, and a trailing edge. The top of the body can form a tippet that generally transitions the front and back surfaces from extending in a generally radial direction to a generally axial direction. The tippet can reduce radial flow and force losses, redirect the radial flow in an axial direction, reduce the exit flow area of the propeller, and increase the inlet flow area of the propeller. The front surface of the blade can have a planar configuration that prevents or reduces the creation of low or negative pressure across the front surface of the blade and associated cavitation.Type: ApplicationFiled: May 20, 2019Publication date: January 23, 2020Inventors: Stephen R. Topaz, Peter A. Topaz, Warren L. Powers
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Patent number: 10294956Abstract: A propeller blade includes a body configured to extend radially from the hub of a propeller. The body can include a front surface, a back surface, a leading edge, and a trailing edge. The top of the body can form a tippet that generally transitions the front and back surfaces from extending in a generally radial direction to a generally axial direction. The tippet can reduce radial flow and force losses, redirect the radial flow in an axial direction, reduce the exit flow area of the propeller, and increase the inlet flow area of the propeller. The front surface of the blade can have a planar configuration that prevents or reduces the creation of low or negative pressure across the front surface of the blade and associated cavitation.Type: GrantFiled: August 5, 2015Date of Patent: May 21, 2019Assignee: SP TechInventors: Stephen R. Topaz, Peter A. Topaz, Warren L. Powers
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Publication number: 20150337854Abstract: A propeller blade includes a body configured to extend radially from the hub of a propeller. The body can include a front surface, a back surface, a leading edge, and a trailing edge. The top of the body can form a tippet that generally transitions the front and back surfaces from extending in a generally radial direction to a generally axial direction. The tippet can reduce radial flow and force losses, redirect the radial flow in an axial direction, reduce the exit flow area of the propeller, and increase the inlet flow area of the propeller. The front surface of the blade can have a planar configuration that prevents or reduces the creation of low or negative pressure across the front surface of the blade and associated cavitation.Type: ApplicationFiled: August 5, 2015Publication date: November 26, 2015Inventors: Stephen R. Topaz, Peter A. Topaz, Warren L. Powers
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Publication number: 20130045107Abstract: A propeller blade includes a body configured to extend radially from the hub of a propeller. The body can include a front surface, a back surface, a leading edge, and a trailing edge. The top of the body can form a tippet that generally transitions the front and back surfaces from extending in a generally radial direction to a generally axial direction. The tippet can reduce radial flow and force losses, redirect the radial flow in an axial direction, reduce the exit flow area of the propeller, and increase the inlet flow area of the propeller. The front surface of the blade can have a planar configuration that prevents or reduces the creation of low or negative pressure across the front surface of the blade and associated cavitation.Type: ApplicationFiled: March 17, 2011Publication date: February 21, 2013Applicant: SP TechInventors: Stephen R. Topaz, Peter A. Topaz, Warren L. Powers
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Patent number: 8214950Abstract: The present invention provides a carrying sling for a person including a flexible sheet, and an elongate flexible member secured in first, second, third and fourth locations to the sheet, the first and second locations defining a first leg loop there between, the first and third locations defining a second leg loop there between, the fourth location defining a torso support, the second and fourth locations defining a first handle there between for lifting the sheet, and the third and fourth locations defining a second handle there between for lifting the sheet.Type: GrantFiled: July 21, 2010Date of Patent: July 10, 2012Inventors: Peter A. Topaz, Carol J. Topaz, Stephen R. Topaz
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Publication number: 20120018466Abstract: The present invention provides a carrying sling for a person including a flexible sheet, and an elongate flexible member secured in first, second, third and fourth locations to the sheet, the first and second locations defining a first leg loop there between, the first and third locations defining a second leg loop there between, the fourth location defining a torso support, the second and fourth locations defining a first handle there between for lifting the sheet, and the third and fourth locations defining a second handle there between for lifting the sheet.Type: ApplicationFiled: July 21, 2010Publication date: January 26, 2012Inventors: Peter A. Topaz, Carol J. Topaz, Stephen R. Topaz
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Publication number: 20060052659Abstract: One embodiment of a cardiac system may include a body that defines a first chamber and a second chamber therein, and structure for transferring pressure from said second chamber to the first chamber.Type: ApplicationFiled: September 7, 2004Publication date: March 9, 2006Inventors: Stephen Topaz, Peter Topaz, Demin Shen
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Patent number: 5306295Abstract: A total artificial heart for placement inside a living body comprising right and left ventricle enclosures, wherein each ventricle includes an exterior wall formed of (i) contacting wall structure and (ii) noncontacting wall structure which collectively enclose an interior volume comprised of a blood chamber and a pumping chamber. The contacting wall structure of each ventricle enclosure is configured for intercontacting relationship wherein the contacting walls of the respective ventricles form a septum which structurally separates the interior volume of the right ventricle from the interior volume of the left ventricle. The noncontacting wall structure comprises the remaining exterior wall of each ventricle enclosure. A fluid drive motor capable of reversible flow is positioned within and circumscribed by the septum and includes a flow channel therethrough which communicates between the respective pumping chambers of the right and left ventricle enclosures.Type: GrantFiled: April 30, 1992Date of Patent: April 26, 1994Assignee: University of Utah Research FoundationInventors: Willem J. Kolff, Stephen R. Topaz, Peter A. Topaz, N. Dan Bishop, Dmitry M. Golub, Long S. Yu, Yvo Smulders, Mark Stegeman, Cornelis Verhoef