Patents by Inventor David L. Thomas
David L. Thomas 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: 11982229Abstract: A compact inlet design including a single bulkhead and/or an acoustic panel extending into nacelle lip region for noise reduction.Type: GrantFiled: August 9, 2021Date of Patent: May 14, 2024Assignee: The Boeing CompanyInventors: Holly J. Thomas, Brian L. Riedel, Alexandre D. Curaudeau, David W. Foutch, Steve G. Mackin
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Patent number: 11712081Abstract: A head covering is disclosed for shielding the hair and head of an individual comprises a hood defining a front edge, a first side edge, a second side edge and a rear edge for engaging over the hair and the head of the individual. A rear panel is coupled to the rear edge of the hood. A pouch is defined within the rear panel for receiving the hair of the individual. A first tether is coupled to the first side edge of the hood. A second tether is coupled to the second side edge of the hood.Type: GrantFiled: May 24, 2021Date of Patent: August 1, 2023Inventor: David L. Thomas, Jr.
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Patent number: 11255457Abstract: In at least some implementations, a solenoid valve includes a housing, a bobbin and an armature. The bobbin is received at least partially within the housing and has a body about which a coil is provided. A fluid flow path including an inlet and an outlet and a valve seat is defined by at least one of the housing or the bobbin, and the armature is moveable relative to the valve seat to control flow through the fluid flow path.Type: GrantFiled: November 17, 2020Date of Patent: February 22, 2022Assignee: Walbro LLCInventors: Dale P. Kus, David L. Thomas
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Publication number: 20210062932Abstract: In at least some implementations, a solenoid valve includes a housing, a bobbin and an armature. The bobbin is received at least partially within the housing and has a body about which a coil is provided. A fluid flow path including an inlet and an outlet and a valve seat is defined by at least one of the housing or the bobbin, and the armature is moveable relative to the valve seat to control flow through the fluid flow path.Type: ApplicationFiled: November 17, 2020Publication date: March 4, 2021Inventors: Dale P. Kus, David L. Thomas
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Patent number: 10876648Abstract: A solenoid valve includes a housing, a bobbin and an armature. The bobbin is received at least partially within the housing and has and internal passage and a body about which a coil is provided. The armature is moveable relative to a valve seat and the valve includes an armature stop received in the internal passage with a press-fit so that it is engaged by the armature in one position of the armature to limit movement of the armature away from the valve seat. The valve also has a biasing member located at least partially between the armature and the armature stop, the armature has a reduced diameter portion received at least partially within the biasing member, and wherein the reduced diameter portion engages the armature stop in the open position of the valve.Type: GrantFiled: May 20, 2019Date of Patent: December 29, 2020Assignee: Walbro LLCInventors: Dale P. Kus, David L. Thomas
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Publication number: 20190271406Abstract: In at least some implementations, a solenoid valve includes a housing, a bobbin and an armature. The bobbin is received at least partially within the housing and has a body about which a coil is provided. A fluid flow path including an inlet and an outlet and a valve seat is defined by at least one of the housing or the bobbin, and the armature is moveable relative to the valve seat to control flow through the fluid flow path.Type: ApplicationFiled: May 20, 2019Publication date: September 5, 2019Inventors: Dale P. Kus, David L. Thomas
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Patent number: 10352471Abstract: A solenoid valve includes a housing, a bobbin and an armature. The bobbin is received at least partially within the housing and has a body about which a coil is provided. A fluid flow path including an inlet and an outlet and a valve seat is defined by at least one of the housing or the bobbin, and the armature is moveable relative to the valve seat to control flow through the fluid flow path.Type: GrantFiled: March 17, 2017Date of Patent: July 16, 2019Assignee: Walbro LLCInventors: Dale P. Kus, David L. Thomas
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Patent number: 9777683Abstract: A starting system for an internal combustion engine that includes: a pump device in communication with a purging and priming circuit of a carburetor; a driven member coupled to the pump device; and a drive member rotatably carried by a recoil starter pulley of an engine. The drive member may positively drive the driven member in two directions, and the driving of the driven member may actuate the pump device.Type: GrantFiled: March 11, 2014Date of Patent: October 3, 2017Assignee: Walbro LLCInventor: David L. Thomas
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Publication number: 20170184214Abstract: In at least some implementations, a solenoid valve includes a housing, a bobbin and an armature. The bobbin is received at least partially within the housing and has a body about which a coil is provided. A fluid flow path including an inlet and an outlet and a valve seat is defined by at least one of the housing or the bobbin, and the armature is moveable relative to the valve seat to control flow through the fluid flow path.Type: ApplicationFiled: March 17, 2017Publication date: June 29, 2017Inventors: Dale P. Kus, David L. Thomas
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Patent number: 9631736Abstract: A solenoid valve includes a housing, a bobbin and an armature. The bobbin is received at least partially within the housing and has a body about which a coil is provided. A fluid flow path including an inlet and an outlet and a valve seat is defined by at least one of the housing or the bobbin, and the armature is moveable relative to the valve seat to control flow through the fluid flow path.Type: GrantFiled: June 10, 2014Date of Patent: April 25, 2017Assignee: Walbro LLCInventors: Dale P. Kus, David L. Thomas
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Publication number: 20160123489Abstract: In at least some implementations, a solenoid valve includes a housing, a bobbin and an armature. The bobbin is received at least partially within the housing and has a body about which a coil is provided. A fluid flow path including an inlet and an outlet and a valve seat is defined by at least one of the housing or the bobbin, and the armature is moveable relative to the valve seat to control flow through the fluid flow path.Type: ApplicationFiled: June 10, 2014Publication date: May 5, 2016Inventors: Dale P. Kus, David L. Thomas
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Publication number: 20160003203Abstract: A starting system for an internal combustion engine that includes: a pump device in communication with a purging and priming circuit of a carburetor; a driven member coupled to the pump device; and a drive member rotatably carried by a recoil starter pulley of an engine. The drive member may positively drive the driven member in two directions, and the driving of the driven member may actuate the pump device.Type: ApplicationFiled: March 11, 2014Publication date: January 7, 2016Inventor: David L. Thomas
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Patent number: 8935106Abstract: A portable test apparatus is for performing a pressure test of a vessel into which a liquid is being forced by a pump. The test apparatus includes a pressure sensor configured to measure pressure in the vessel. A processor is configured to monitor, during the test, stroke counts communicated from the pump and the pressure sensed by the pressure sensor. A graphical user interface includes input fields to receive user-input of test parameter information, and further includes a graphical representation of the stroke counts and measured pressure in real time during the test.Type: GrantFiled: October 28, 2011Date of Patent: January 13, 2015Assignee: Adalet/Scott Fetzer CompanyInventors: John A. Balogh, David L. Thomas
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Patent number: 8453998Abstract: In one form, a carburetor may include an air passage, a fuel and air mixing passage, a throttle valve, an air valve and a lost motion coupler interconnecting the air valve and the throttle valve. The throttle valve may be disposed in communication with the fuel and air mixing passage and moveable between an idle position and an open position permitting an at least somewhat less restricted fluid flow therethrough than when the throttle valve is in the idle position. The air valve may be disposed in communication with the air passage, and moveable between closed and fully open positions to control air flow through the air passage.Type: GrantFiled: August 17, 2010Date of Patent: June 4, 2013Assignee: Walbro Engine Management, L.L.C.Inventors: George M. Pattullo, Thomas L. Schmidt, David L. Thomas
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Publication number: 20130110417Abstract: A portable test apparatus is for performing a pressure test of a vessel into which a liquid is being forced by a pump. The test apparatus includes a pressure sensor configured to measure pressure in the vessel. A processor is configured to monitor, during the test, stroke counts communicated from the pump and the pressure sensed by the pressure sensor. A graphical user interface includes input fields to receive user-input of test parameter information, and further includes a graphical representation of the stroke counts and measured pressure in real time during the test.Type: ApplicationFiled: October 28, 2011Publication date: May 2, 2013Inventors: John A. Balogh, David L. Thomas
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Publication number: 20130062547Abstract: A seal for an air valve having a valve shaft rotatably carried in a bore formed in a body and a valve head carried by the valve shaft to control air flow through an air passage as the valve shaft is rotated. The seal may include a pair of spaced apart sealing members adapted to engage the body within the air passage to seal a junction between the valve and air passage. The seal may also include an intermediate member between and interconnecting the sealing members, where the intermediate member is flexible to permit movement of at least a portion of the sealing members toward each other and the intermediate member is also resilient to yieldably bias the sealing members away from each other at least when the sealing members are displaced toward each other.Type: ApplicationFiled: September 13, 2011Publication date: March 14, 2013Applicant: WALBRO ENGINE MANAGEMENT, L.L.C.Inventors: George M. Pattullo, Thomas L. Schmidt, David L. Thomas
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Patent number: 8168771Abstract: The invention provides consensus sequences for hepatitis C virus 1a and 1b. Also provided are non-synonymous changes for each residue of the consensus sequences. These sequences are useful as compositions or vaccines for prophylactic use or treating HCV-infected individuals. Also provided are methods for lessening the chances for a HCV-infected individual to enter a chronic phase of infection and methods of diagnosing an individual with HCV 1a or HCV 1b infection.Type: GrantFiled: January 31, 2006Date of Patent: May 1, 2012Assignee: The Johns Hopkins UniversityInventors: Stuart C. Ray, Andrew L. Cox, David L. Thomas
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Publication number: 20120043674Abstract: In one form, a carburetor may include an air passage, a fuel and air mixing passage, a throttle valve, an air valve and a lost motion coupler interconnecting the air valve and the throttle valve. The throttle valve may be disposed in communication with the fuel and air mixing passage and moveable between an idle position and an open position permitting an at least somewhat less restricted fluid flow therethrough than when the throttle valve is in the idle position. The air valve may be disposed in communication with the air passage, and moveable between closed and fully open positions to control air flow through the air passage.Type: ApplicationFiled: August 17, 2010Publication date: February 23, 2012Applicant: WALBRO ENGINE MANAGEMENT, L.L.C.Inventors: George M. Pattullo, Thomas L. Schmidt, David L. Thomas
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Publication number: 20110087450Abstract: Systems are able to reduce or remove slowly-varying drift errors, such as heading errors, rate of rotation errors, and direction of travel errors, to correct the measurements from tracking devices. The systems may be used to remove the slow varying drift errors for gyroscopic tracking device sensors, or other types of sensors used for determining heading, rates of rotation, direction of travel, or position. The systems may be employed in personal dead reckoning systems, or other personnel tracking device, as well as in vehicle tracking devices. The system uses heuristic assumptions to correct for these drift errors, via a feedback loop control having an accumulator responsive to changes in output signals. The accumulator is able to produce a signal that over time compensates for the inherent drift errors on those output signals.Type: ApplicationFiled: October 22, 2010Publication date: April 14, 2011Applicant: UNIVERSITY OF MICHIGANInventors: Johann Borenstein, Lauro Ojeda, David L. Thomas
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Patent number: 7757710Abstract: A high-pressure regulator includes body having a pressure inlet and a pressure outlet. A piston is disposed in the body and fluidly coupled to the pressure inlet and the pressure outlet. The piston is configured to operate in compression to contact a seat ring for the purpose of controlling the flow of fluid from the pressure inlet to the pressure outlet in response to a pressure applied to a surface of the piston via the pressure outlet. A piston seat circumferentially engages the piston to provide an improved seal at low temperatures.Type: GrantFiled: June 19, 2007Date of Patent: July 20, 2010Assignee: Tescom CorporationInventors: Todd W. Larsen, David L. Thomas, Eric W. Neumann