Patents by Inventor Christopher John Biddulph
Christopher John Biddulph 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: 11459890Abstract: A rotary engine rotor (10) comprising three rotor flanks (12) arranged in a generally equilateral triangle shape, each rotor flank (12) having a leading edge (16) and a trailing edge (17), an elongate lip (21) being provided on the leading edge (16) of at least one of the rotor flanks (12), the elongate lip (21) extending the full axial length of the rotor flank (12). In another aspect, at least one rotor flank (12) comprises a cavity having a leading edge and a trailing edge, and at least a portion of the base of the cavity proximal to a trailing edge thereof is curved outwardly.Type: GrantFiled: May 13, 2020Date of Patent: October 4, 2022Inventors: Roy Richmond, Christopher John Biddulph, Jonathan Mark Bagnell
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Publication number: 20200270991Abstract: A rotary engine rotor (10) comprising three rotor flanks (12) arranged in a generally equilateral triangle shape, each rotor flank (12) having a leading edge (16) and a trailing edge (17), an elongate lip (21) being provided on the leading edge (16) of at least one of the rotor flanks (12), the elongate lip (21) extending the full axial length of the rotor flank (12). In another aspect, at least one rotor flank (12) comprises a cavity having a leading edge and a trailing edge, and at least a portion of the base of the cavity proximal to a trailing edge thereof is curved outwardly.Type: ApplicationFiled: May 13, 2020Publication date: August 27, 2020Inventors: Roy Richmond, Christopher John Biddulph, Jonathan Mark Bagnell
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Patent number: 10513965Abstract: An engine assembly (10) for a propeller-driven aircraft is disclosed, the assembly including an engine (11), a drive shaft (13) driven by the engine (11), and a radiator (20) comprising an aperture (24) for receiving the drive shaft (13), the aperture (24) being located such that the radiator (20) substantially circumferentially surrounds the drive shaft (13). The aperture (24) may take various forms, such as a hole within the interior of the radiator (20) or a blind slit formed within the radiator (20).Type: GrantFiled: November 10, 2017Date of Patent: December 24, 2019Assignee: UAV Engines Ltd.Inventor: Christopher John Biddulph
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Patent number: 10253677Abstract: An engine assembly (10) for a propeller-driven aircraft is disclosed, the assembly including an engine (11), a drive shaft (13) driven by the engine (11), and a radiator (20) comprising an aperture (24) for receiving the drive shaft (13), the aperture (24) being located such that the radiator (20) substantially circumferentially surrounds the drive shaft (13). The aperture (24) may take various forms, such as a hole within the interior of the radiator (20) or a blind slit formed within the radiator (20).Type: GrantFiled: June 3, 2014Date of Patent: April 9, 2019Assignee: UAV Engines Ltd.Inventor: Christopher John Biddulph
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Publication number: 20180087436Abstract: An engine assembly (10) for a propeller-driven aircraft is disclosed, the assembly including an engine (11), a drive shaft (13) driven by the engine (11), and a radiator (20) comprising an aperture (24) for receiving the drive shaft (13), the aperture (24) being located such that the radiator (20) substantially circumferentially surrounds the drive shaft (13). The aperture (24) may take various forms, such as a hole within the interior of the radiator (20) or a blind slit formed within the radiator (20).Type: ApplicationFiled: November 10, 2017Publication date: March 29, 2018Inventor: Christopher John Biddulph
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Publication number: 20170167368Abstract: A rotary engine rotor (10) comprising three rotor flanks (12) arranged in a generally equilateral triangle shape, each rotor flank (12) having a leading edge (16) and a trailing edge (17), an elongate lip (21) being provided on the leading edge (16) of at least one of the rotor flanks (12), the elongate lip (21) extending the full axial length of the rotor flank (12). In another aspect, at least one rotor flank (12) comprises a cavity having a leading edge and a trailing edge, and at least a portion of the base of the cavity proximal to a trailing edge thereof is curved outwardly.Type: ApplicationFiled: February 10, 2016Publication date: June 15, 2017Applicant: UAV Engines Ltd.Inventors: Roy Richmond, Christopher John Biddulph, Jonathan Mark Bagnell
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Patent number: 9518658Abstract: A rotary engine rotor (10) comprises a body (12) comprising an outer surface (18), an inner surface (22), an insert (14) and a fixing member (16). The outer surface (18) comprises three rotor sides (20) arranged in an equilateral triangle shape. The inner surface (22) comprises a location portion (24) at the midpoint of each rotor side (20), the location portions (24) together defining a location aperture (26). One location portion (24) is provided with a first fixing socket (28) extending radially from the inner surface (22) of the body (12), towards the outer surface (18) of the body (12). Cooling channels (30) are provided axially through the body (12) in the region of each apex (31). The insert (14) is provided in the location aperture (26) and comprises a bearing part (38) with a second fixing socket (40) extending radially through the insert (14) and in alignment with the first fixing socket (28).Type: GrantFiled: March 5, 2012Date of Patent: December 13, 2016Assignee: UAV Engines Ltd.Inventors: Christopher John Biddulph, Jonathan Mark Bagnell
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Publication number: 20160153342Abstract: An engine assembly (10) for a propeller-driven aircraft is disclosed, the assembly including an engine (11), a drive shaft (13) driven by the engine (11), and a radiator (20) comprising an aperture (24) for receiving the drive shaft (13), the aperture (24) being located such that the radiator (20) substantially circumferentially surrounds the drive shaft (13). The aperture (24) may take various forms, such as a hole within the interior of the radiator (20) or a blind slit formed within the radiator (20).Type: ApplicationFiled: June 3, 2014Publication date: June 2, 2016Inventor: Christopher John Biddulph
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Publication number: 20140069273Abstract: A rotary engine rotor (10) comprises a body (12) comprising an outer surface (18), an inner surface (22), an insert (14) and a fixing 31 member (16). The outer surface (18) comprises three rotor sides (20) arranged in an equilateral triangle shape. The inner surface (22) comprises a location portion (24) at the midpoint of each rotor side (20), the location portions (24) together defining a location aperture (26). One location portion (24) is provided with a first fixing socket (28) extending radially from the inner surface (22) of the body (12), towards the outer surface (18) of the body (12). Cooling channels (30) are provided axially through the body (12) in the region of each apex (31). The insert (14) is provided in the location aperture (26) and comprises a bearing part (38) with a second fixing socket (40) extending radially through the insert (14) and in alignment with the first fixing socket (28).Type: ApplicationFiled: March 5, 2012Publication date: March 13, 2014Applicant: UAV ENGINES LTD.Inventors: Christopher John Biddulph, Jonathan Mark Bagnell
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Publication number: 20100242926Abstract: A fuel heating apparatus for an internal combustion engine or other type of spark ignition engine having an associated pressurised fuel delivery system, the apparatus comprising a chamber for receiving a volume of a pressurised liquid fuel; and means for heating the fuel within the chamber to provide heated liquid fuel to the fuel delivery system of the engine, to thereby minimise condensation of the fuel and facilitate ignition of the engine within relatively low ambient temperature environments. The apparatus has particular application with ‘heavy fuels’, such as diesel or kerosene, and improves the reliability and performance of the engine especially during ‘cold starts’ and while transitioning to fast-idling.Type: ApplicationFiled: October 24, 2008Publication date: September 30, 2010Inventor: Christopher John Biddulph
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Patent number: D614103Type: GrantFiled: December 29, 2008Date of Patent: April 20, 2010Assignee: UAV Engines LimitedInventors: Christopher John Biddulph, Ian John Fowler, Jon Bagnell, Roy Richmond, Martin Duffield