Patents by Inventor David Heaps
David Heaps 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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Publication number: 20230375478Abstract: Methods and systems for measuring component concentrations. The methods may include providing a system configured for contacting a first component, a second component, and a third component; determining a concentration of the second component in a reactor; determining a concentration of the third component in the reactor; determining a temperature and a pressure of a first apparatus downstream of the reactor; and calculating a first concentration of the first component in the reactor based on (i) the concentration of the second component in the reactor, (ii) the concentration of the third component in the reactor, and (iii) the temperature and the pressure of the first apparatus.Type: ApplicationFiled: May 17, 2023Publication date: November 23, 2023Applicant: LyondellBasell Acetyls, LLCInventors: Austin R. Straussner, Shane J. Weber, Noel C. Hallinan, David A. Heaps
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Publication number: 20230009131Abstract: Pre-treatment methods for polyolefin-based feed streams before depolymerization are described. Polyolefins are separated from other material in the polyolefin-based feed stream using density differences in an aqueous solution, which allows for a pre-treatment method that does not affect the depolymerization catalyst. By removing the non-polyolefin materials from the feed stream, the depolymerization of the polyolefin material can proceed at lower temperatures for longer cycles. This results in a more efficient process with a smaller carbon footprint.Type: ApplicationFiled: July 8, 2022Publication date: January 12, 2023Applicant: Basell Poliolefine Italia S.r.l.Inventors: Sandor Nagy, Diego Brita, Christopher D. Smith, David A. Heaps, Daniel F. White, David L. Ramage
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Publication number: 20220154707Abstract: A vacuum pump is provided that includes a body, a first cylinder at least partially inside the body, a second cylinder at least partially inside the body, and an electric drive motor attached to the body and driving a common crank pin. The first cylinder has a first cylinder axis, and a first piston is reciprocal in the first cylinder. A first piston rod is attached to the first piston. The second cylinder has a second cylinder axis, and a second piston is reciprocal in the second cylinder. A second piston rod is attached to the second piston. The first and second cylinder axes are arranged at substantially 90° to each other. The first and second piston rods engage the common crank pin such that the first piston and the second piston are commonly driven by the common crank pin.Type: ApplicationFiled: March 15, 2019Publication date: May 19, 2022Inventors: Glyn Dyche, David Heaps
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Patent number: 11168691Abstract: A rotary vacuum pump includes a housing defining a pump chamber therein and a rotor extending through a first axial end panel into the pump chamber and carrying at least one vane for rotary movement of the vane within the pump chamber. The rotor comprises an annular axial end face configured to seal against a corresponding contact surface of a second axial end panel. An annular groove for reducing noise generation of the rotary vacuum pump during operation is formed at the annular axial end face of the rotor and/or the contact surface of the second axial end panel.Type: GrantFiled: October 10, 2016Date of Patent: November 9, 2021Assignee: ZF CV SYSTEMS EUROPE BVInventors: David Heaps, Phillip Saxton, Peter Todman
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Patent number: 11143188Abstract: A vacuum pump suitable for mounting to an engine includes: a casing having a cavity, the cavity including an inlet and an outlet; a moveable member arranged for rotation inside the cavity, the movable member being movable to draw fluid into the cavity through the inlet and out of the cavity through the outlet so as to induce a reduction in pressure at the inlet; a valve seat at the outlet; and an outlet valve including a reed element and a stop for restricting movement of the reed element. The stop is movable between a first operating position, in which movement of the reed element is restricted to a first opening degree, and a second start-up position, in which movement of the reed element is restricted to a second opening degree, which is larger than the first opening degree.Type: GrantFiled: June 9, 2017Date of Patent: October 12, 2021Assignee: ZF CV SYSTEMS EUROPE BVInventors: David Heaps, Simon Warner
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Patent number: 10837283Abstract: A vacuum pump includes a housing defining a cavity having an inlet and an outlet; a vane member for a rotary driven movement inside the cavity; a drivable rotor inside the cavity; and a rotatable central shaft extending to the cavity. The vane member is slidably arranged in the rotor. The rotor is rotatable together with the vane member. The central shaft comprises a crank pin configured to engage a respective guiding recess of the rotor for driving the rotor at least along a first predetermined rotational angle.Type: GrantFiled: November 13, 2015Date of Patent: November 17, 2020Assignee: WABCO EUROPE BVBAInventors: David Heaps, Simon Warner
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Patent number: 10683864Abstract: Vacuum pump (1), comprising a housing (2) having an inlet (4) and an outlet (6) and defining a chamber (8) within the housing (2), a rotor (10) for rotational movement about a rotational axis (AR) within the chamber (8), and at least a first and a second vane (22, 24) received in respective first and seconds slots (16, 18) formed in the rotor (10). The first and second slots (16, 18) are substantially parallel to each other, and a length (LV) of each vane (22, 24) is larger than a length (LS) of the respective slot. Production method of such a vacuum pump.Type: GrantFiled: March 10, 2016Date of Patent: June 16, 2020Assignee: WABCO EUROPE BVBAInventors: David Heaps, Simon Warner, Paul Wellings
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Publication number: 20200116150Abstract: A vacuum pump suitable for mounting to an engine includes: a casing having a cavity, the cavity including an inlet and an outlet; a moveable member arranged for rotation inside the cavity, the movable member being movable to draw fluid into the cavity through the inlet and out of the cavity through the outlet so as to induce a reduction in pressure at the inlet; a valve seat at the outlet; and an outlet valve including a reed element and a stop for restricting movement of the reed element. The stop is movable between a first operating position, in which movement of the reed element is restricted to a first opening degree, and a second start-up position, in which movement of the reed element is restricted to a second opening degree, which is larger than the first opening degree.Type: ApplicationFiled: June 9, 2017Publication date: April 16, 2020Inventors: David HEAPS, Simon WARNER
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Patent number: 10480465Abstract: A vacuum pump suitable for mounting to an engine includes a casing, a cavity in the casing having with an inlet and an outlet, a moveable member arranged for rotation inside the cavity, wherein the movable member is movable to draw fluid into the cavity through the inlet and out of the cavity through the outlet so as to induce a reduction in pressure at the inlet, an oil supply conduit for supplying oil from a reservoir to the cavity, and a check valve having a check valve body arranged in the oil supply conduit. The check valve meters the oil flow to the cavity dependent on an oil pressure so that on exceeding an upper oil pressure threshold the supply of oil to the cavity is stopped by means of the check valve.Type: GrantFiled: April 30, 2015Date of Patent: November 19, 2019Assignee: WABCO EUROPE BVBAInventors: David Heaps, Phillip Saxton, Peter Todman
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Publication number: 20190338781Abstract: A vacuum pump includes a housing defining a cavity having an inlet and an outlet; a vane member for a rotary driven movement inside the cavity; a drivable rotor inside the cavity; and a rotatable central shaft extending to the cavity. The vane member is slidably arranged in the rotor. The rotor is rotatable together with the vane member. The central shaft comprises a crank pin configured to engage a respective guiding recess of the rotor for driving the rotor at least along a first predetermined rotational angle.Type: ApplicationFiled: November 13, 2015Publication date: November 7, 2019Applicant: WABCO Europe BVBAInventors: David HEAPS, Simon WARNER
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Publication number: 20190242383Abstract: A rotary vacuum pump includes a housing defining a pump chamber therein and a rotor extending through a first axial end panel into the pump chamber and carrying at least one vane for rotary movement of the vane within the pump chamber. The rotor comprises an annular axial end face configured to seal against a corresponding contact surface of a second axial end panel. An annular groove for reducing noise generation of the rotary vacuum pump during operation is formed at the annular axial end face of the rotor and/or the contact surface of the second axial end panel.Type: ApplicationFiled: October 10, 2016Publication date: August 8, 2019Inventors: David Heaps, Phillip Saxton, Peter Todman
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Patent number: 10371148Abstract: An automotive vacuum pump includes a casing defining a cavity, the casing having an inlet and an outlet, wherein the cavity contains a rotor extending through a side of the casing to the exterior thereof and being provided with a coupling arrangement to couple the rotor to a drive member. The vacuum pump is provided with a lubrication conduit for the supply of lubricating fluid to the coupling arrangement from within the vacuum pump.Type: GrantFiled: May 18, 2017Date of Patent: August 6, 2019Assignee: WABCO AUTOMOTIVE UK LIMITEDInventors: David Heaps, Simon Warner, John Hegarty
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Publication number: 20190017507Abstract: Vacuum pump (1), comprising a housing (2) having an inlet (4) and an outlet (6) and defining a chamber (8) within the housing (2), a rotor (10) for rotational movement about a rotational axis (AR) within the chamber (8), and at least a first and a second vane (22, 24) received in respective first and seconds slots (16, 18) formed in the rotor (10). The first and second slots (16, 18) are substantially parallel to each other, and a length (LV) of each vane (22, 24) is larger than a length (LS) of the respective slot. Production method of such a vacuum pump.Type: ApplicationFiled: March 10, 2016Publication date: January 17, 2019Inventors: David HEAPS, Simon WARNER, Paul WELLINGS
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Patent number: 10118884Abstract: The present disclosure provides for a method for measuring the concentration of one or more components in a reactor or a separation unit of an acetic acid process by Raman spectroscopic analyses. In some embodiments, the conditions in the reactor or in any subsequent step of the acetic acid production process are adjusted in response to the measured concentration of one or more components.Type: GrantFiled: April 10, 2017Date of Patent: November 6, 2018Assignee: LyondellBasell Acetyls, LLCInventors: Noel C. Hallinan, David L. Ramage, David A. Heaps
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Patent number: 9856877Abstract: To provide a failsafe drive coupling capable of high torque transmission in direct dog drive, a vacuum pump drive is disconnectable from a drive shaft upon movement of a piston against a return spring, under the action of oil pressure. The piston comprises a speed synchronizing clutch engageable with the input shaft to rotate the piston at the speed of the input shaft, and teeth to directly dog the piston and input shaft together.Type: GrantFiled: December 19, 2013Date of Patent: January 2, 2018Assignee: WABCO AUTOMOTIVE UK LIMITEDInventors: Simon Warner, David Heaps
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Patent number: 9803642Abstract: A rotating vane vacuum pump includes a housing defining a cavity having an inlet and an outlet, a drivable vane member for a rotary driven movement inside the cavity, a rotor inside the cavity, and a rotatable central shaft extending into the cavity. The vane member is coupled to the central shaft by an eccentric element on the central shaft and movably arranged in the rotor, the rotor being rotatable together with said vane member upon rotation of the vane member. A rotational axis of the central shaft is offset from a rotational axis of the rotor and a point of action of the vane member is offset from the rotational axis of the central shaft by the eccentric element on the central shaft. The rotor encloses radially the eccentric element of the central shaft.Type: GrantFiled: August 7, 2015Date of Patent: October 31, 2017Assignee: WABCO EUROPE BVBAInventors: David Heaps, Simon Warner
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Publication number: 20170254332Abstract: An automotive vacuum pump includes a casing defining a cavity, the casing having an inlet and an outlet, wherein the cavity contains a rotor extending through a side of the casing to the exterior thereof and being provided with a coupling arrangement to couple the rotor to a drive member. The vacuum pump is provided with a lubrication conduit for the supply of lubricating fluid to the coupling arrangement from within the vacuum pump.Type: ApplicationFiled: May 18, 2017Publication date: September 7, 2017Inventors: David Heaps, Simon Warner, John Hegarty
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Publication number: 20170210690Abstract: The present disclosure provides for a method for measuring the concentration of one or more components in a reactor or a separation unit of an acetic acid process by Raman spectroscopic analyses. In some embodiments, the conditions in the reactor or in any subsequent step of the acetic acid production process are adjusted in response to the measured concentration of one or more components.Type: ApplicationFiled: April 10, 2017Publication date: July 27, 2017Applicant: LyondellBasell Acetyls, LLCInventors: Noel C. Hallinan, David L. Ramage, David A. Heaps
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Publication number: 20170198695Abstract: A rotating vane vacuum pump includes a housing defining a cavity having an inlet and an outlet, a drivable vane member for a rotary driven movement inside the cavity, a rotor inside the cavity, and a rotatable central shaft extending into the cavity. The vane member is coupled to the central shaft by an eccentric element on the central shaft and movably arranged in the rotor, the rotor being rotatable together with said vane member upon rotation of the vane member. A rotational axis of the central shaft is offset from a rotational axis of the rotor and a point of action of the vane member is offset from the rotational axis of the central shaft by the eccentric element on the central shaft. The rotor encloses radially the eccentric element of the central shaft.Type: ApplicationFiled: August 7, 2015Publication date: July 13, 2017Inventors: David Heaps, Simon Warner
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Patent number: 9683570Abstract: The present invention relates to an automotive vacuum pump 10. The vacuum pump 10 has a casing 12 defining a cavity having an inlet 14 and an outlet 16, wherein the cavity contains a rotor 18 and a vane slidably mounted to the rotor 18. The rotor 18 extends through a side 21 of the casing 12 to the exterior thereof and is provided with a coupling arrangement 26 to couple the rotor 18 to a drive member. The vacuum pump 10 is provided with a lubrication conduit 50, 56, 66, 68, 70, 72, 74 for the supply of lubricating fluid to the coupling arrangement 26, the conduit 50, 56, 66, 68, 70, 72, 74 including a portion 70, 72, 74 which extends through the rotor 18 and the coupling arrangement 26.Type: GrantFiled: August 15, 2012Date of Patent: June 20, 2017Assignee: Wabco Automotive UK LimitedInventors: David Heaps, Simon Warner, John Hegarty