Patents by Inventor Warren P. Faeth
Warren P. Faeth 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: 5333654Abstract: A device for mounting in a fuel dispensing hose that has a flexible inner tube defining the fuel conduit, and a tubular outer sleeve that defines with the inner tube an annular vapor return passage. The device includes a venturi section adapted for serial connection with the inner tube within the outer sleeve. The section comprises a cylindrical block that connects at each end with an end of the inner tube and defines a venturi forming part of the fuel conduit. The block also has an aspirator means that defines at least two radial ports communicating between the venturi throat and the annular vapor passage. Each radial port has a check valve to block fuel flow from the fuel conduit to the vapor passage.Type: GrantFiled: June 28, 1993Date of Patent: August 2, 1994Assignee: Tokheim CorporationInventor: Warren P. Faeth
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Patent number: 5240045Abstract: A fuel dispensing system and method for making same having a fuel dispensing hose connecting between a dispenser pump and nozzle that has a flexible inner tube defining a fluid conduit, and a tubular outer sleeve that defines with the inner tube an annular vapor return passage. The system includes a venturi section adapted for serial connection with the inner tube within the outer sleeve. The venturi section comprises a cylindrical block that connects at each end with an end of the inner tube and defines a venturi opening part of the fuel conduit. The vapor return passage forming at least one looped low portion during dispensing of fuel. The block also has an aspirator mechanism that defines a plurality of separate radial ports communicating between the venturi throat and the annular vapor passage. The ports are formed so that one of the ports will be below the centerline of the looped portion during dispensing of fuel.Type: GrantFiled: June 3, 1992Date of Patent: August 31, 1993Assignee: Tokheim CorporationInventor: Warren P. Faeth
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Patent number: 5129433Abstract: A device for mounting in a fuel dispensing hose that has a flexible inner tube defining the fuel conduit, and a tubular outer sleeve that defines with the inner tube an annular vapor return passage. The device includes a venturi section adapted for serial connection with the inner tube within the outer sleeve. The section comprises a cylindrical block that connects at each end with an end of the inner tube and defines a venturi forming part of the fuel conduit. The block also has an aspirator means that defines at least two radial ports communicating between the venturi throat and the annular vapor passage. Each radial port has a check valve to block fuel flow from the fuel conduit to the vapor passage.Type: GrantFiled: May 23, 1991Date of Patent: July 14, 1992Assignee: Tokheim CorporationInventor: Warren P. Faeth
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Patent number: 5040576Abstract: A device for mounting in a fuel dispensing hose that has a flexible inner tube defining the fuel conduit, and a tubular outer sleeve that defines with the inner tube an annular vapor return passage. The device includes a venturi section adapted for serial connection with the inner tube within the outer sleeve. The section comprises a cylindrical block that connects at each end with an end of the inner tube and defines a venturi forming part of the fuel conduit. The block also has an aspirator means that defines at least two radial ports communicating between the venturi throat and the annular vapor passage. Each radial port has a check valve to block fuel flow from the fuel conduit to the vapor passage.Type: GrantFiled: May 31, 1990Date of Patent: August 20, 1991Assignee: Tokheim CorporationInventor: Warren P. Faeth
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Patent number: 4967809Abstract: A device for mounting in a fuel dispensing hose that has a flexible inner tube defining the fuel conduit, and a tubular outer sleeve that defines with the inner tube an annular vapor return passage. The device includes a venturi section adapted for serial connection with the inner tube within the outer sleeve. The section comprises a cylndrical block that connects at each end with an end of the inner tube and defines a venturi forming part of the fuel conduit. The block also has an aspirator means that defines at least two radial ports communicating between the venturi throat and the annular vapor passage. Each radial port has a check valve to block fuel flow from the fuel conduit to the vapor passage.Type: GrantFiled: March 29, 1989Date of Patent: November 6, 1990Assignee: Tokheim CorporationInventor: Warren P. Faeth
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Patent number: 4842027Abstract: A device for mounting in a fuel dispensing hose that has a flexible inner tube defining the fuel conduit, and a tubular outer sleeve that defines with the inner tube an annular vapor return passage. The device includes a venturi section adapted for serial connection with the inner tube within the outer sleeve. The section comprises a cylindrical block that connects at each end with an end of the inner tube and defines a venturi forming part of the fuel conduit. The block also has an aspirator means that defines at least two radial ports communicating between the venturi throat and the annular vapor passage. Each radial port has a check valve to block fuel flow from the fuel conduit to the vapor passage.Type: GrantFiled: September 18, 1987Date of Patent: June 27, 1989Assignee: Tokheim CorporationInventor: Warren P. Faeth
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Patent number: 4827987Abstract: A device for mounting in a fuel dispensing hose that has a flexible inner tube defining the fuel conduit, and a tubular outer sleeve that defines with the inner tube an annular vapor return passage. The device includes an aspirating block adapted for serial connection with the inner tube within the outer sleeve. The section comprises a cylindrical block that is connected in series with ends of the inner tube and defines a venturi or jet pump forming part of the fuel conduit. The block also includes bypass passages for fuel to bypass the venturi and to increase the fuel flow through the block. The aspirating block also has radial aspirator ports which communicate between the venturi throat or jet pump and the annular vapor return passage. Each radial aspirating port includes a check valve to permit only one-way fuel flow from the fuel conduit to the vapor passage.Type: GrantFiled: January 13, 1987Date of Patent: May 9, 1989Assignee: Tokheim CorporationInventor: Warren P. Faeth
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Patent number: 4749009Abstract: A device for mounting in a fuel dispensing hose that has a flexible inner tube defining the fuel conduit, and a tubular outer sleeve that defines with the inner tube an annular vapor return passage. The device includes a venturi section adapted for serial connection with the inner tube within the outer sleeve. The section comprises a cylindrical block that connects at each end with an end of the inner tube and defines a venturi forming part of the fuel conduit. The block also has an aspirator means that defines at least two radial ports communicating between the venturi throat and the annular vapor passage. Each radial port has a check valve to block fuel flow from the fuel conduit to the vapor passage.Type: GrantFiled: October 23, 1987Date of Patent: June 7, 1988Assignee: Tokheim CorporationInventor: Warren P. Faeth