Patents by Inventor David A. March
David A. March 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: 20240181823Abstract: An Amphibious Vehicle (AV) is capable of planing with less power than prior similar size amphibious vehicles and using mostly off-the-shelf part. Leading rear wheel well flaps are biased forward against the hull bottom for on-road use, and pivot back to fill a gap between the hull and retracted rear wheel, reducing drag during in-water use.Type: ApplicationFiled: February 13, 2024Publication date: June 6, 2024Inventor: J. David March
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Publication number: 20240100296Abstract: A package for a medical device such as an intermittent catheter has a case and a cap connected by threads. The case includes a hollow tube which is closed at one end and open at the other. A shoulder is formed near one end of the case. Above the shoulder is a cylindrical ferrule that includes external threads. The cap has internal threads selectably engageable with the threads on the ferrule to form a liquid-tight seal between the cap and case when the cap is installed on the case.Type: ApplicationFiled: December 5, 2023Publication date: March 28, 2024Inventors: Daniel E. O'Brien, Vincent Naughton, Martin McMenamin, Joseph N. Hanley, David A. Knauz, Martin P. Creaven, Stephen Collum, Jeanne E. Lee, Siobhan Duffy, Marine Veronique Germaine Richard, Eugene Canavan, Daniel A. March
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Patent number: 11919345Abstract: An Amphibious Vehicle (AV) is capable of planing with less power than prior similar size amphibious vehicles and using mostly off-the-shelf part. The AV uses an outdrive and propellor instead of a pump, and also include leading rear wheel well flaps which are spring biased forward against the hull bottom for on-road use, and pivot back to fill a gap between the hull and rear tire, reducing drag during in-water use. The combination of the propellor and wheel well flap allows planing with less horse power. An engine faces to the rear and either reversing differentials to reversing carrier and hubs provide correct wheel rotation. A reversing gear box attaches to an engine front and reverses rotation providing correct rotation for an outdrive and propellor.Type: GrantFiled: May 23, 2022Date of Patent: March 5, 2024Inventor: J. David March
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Publication number: 20230373258Abstract: An Amphibious Vehicle (AV) is capable of planing with less power than prior similar size amphibious vehicles and using mostly off-the-shelf part. The AV uses an outdrive and propellor instead of a pump, and also include leading rear wheel well flaps which are spring biased forward against the hull bottom for on-road use, and pivot back to fill a gap between the hull and rear tire, reducing drag during in-water use. The combination of the propellor and wheel well flap allows planing with less horse power. An engine faces to the rear and either reversing differentials to reversing carrier and hubs provide correct wheel rotation. A reversing gear box attaches to an engine front and reverses rotation providing correct rotation for an outdrive and propellor.Type: ApplicationFiled: May 23, 2022Publication date: November 23, 2023Inventor: J. David March
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Patent number: 11510489Abstract: A flute lyre includes a music holder and a body attached to the music holder. The body includes a neck member, a support member, and an arm member extending between the neck member and the support member. The support member includes a base support and a music holder support. The neck member is configured to extend about and contact a user's neck, and the base support is configured to contact the user's torso when the flute lyre is positioned on the user. The music holder support is positioned on an exterior side of an arm of the user, and the arm member is positioned between the user's arm and the user's torso for contacting the user's arm when the flute lyre is positioned on the user and the user holds the flute in the playing position. Other example flute lyres and methods of constructing flute lyres are also disclosed.Type: GrantFiled: December 9, 2021Date of Patent: November 29, 2022Inventor: Joseph David March
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Publication number: 20220218103Abstract: A flute lyre includes a music holder and a body attached to the music holder. The body includes a neck member, a support member, and an arm member extending between the neck member and the support member. The support member includes a base support and a music holder support. The neck member is configured to extend about and contact a user's neck, and the base support is configured to contact the user's torso when the flute lyre is positioned on the user. The music holder support is positioned on an exterior side of an arm of the user, and the arm member is positioned between the user's arm and the user's torso for contacting the user's arm when the flute lyre is positioned on the user and the user holds the flute in the playing position. Other example flute lyres and methods of constructing flute lyres are also disclosed.Type: ApplicationFiled: December 9, 2021Publication date: July 14, 2022Inventor: Joseph David March
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Patent number: 8764499Abstract: An amphibious vehicle achieves a stable ride, maneuverability, and high speed. The vehicle includes a hull having a “V” center portion with outboard sponsons. The sponsons reside between the front wheel wells and the rear wheels wells for improving lift and transition to planing. Shallow tunnels begin in rear portions of the front wheel wells and taper into the sponsons to release water trapped in the wheel wells. Inward facing turning edges also reside between the front and rear wheel wells and improve in-water handling. Wheels are retractable by pneumatic cylinders in parallel with air shock absorbers and suspension cutout in the hull allow the suspension to lower through the hull. Flaps reside under suspension members and rise to cover the suspension cutouts when the wheels are retractable when the wheels are raised to reduce drag. A Morse cable couple a rack and pinion unit to a jet drive.Type: GrantFiled: July 17, 2012Date of Patent: July 1, 2014Inventor: J. David March
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Patent number: 8498629Abstract: A software-defined radio includes an executable radio software system operable with a radio circuit and conforming to the software communications architecture (SCA) specification and defining an operating environment that allows a waveform application to operate with a radio circuit for transmitting and receiving voice and data. An extensible Human-Machine Interface (HMI) plugin module is operable for allowing a selected waveform application to integrate with the radio circuit and provide an HMI user interface.Type: GrantFiled: October 18, 2005Date of Patent: July 30, 2013Assignee: Harris CorporationInventors: David March, Glen Dragon, Christopher Page, Michael E. Wilkerson-Barker
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Patent number: 8443158Abstract: A mobile wireless communications device may include a wireless transceiver, a series of processing modules, a shared memory connected the plurality of processing modules and to the wireless transceiver, and a memory manager module for generating respective data location indices for data stored in the shared memory. The processing modules may cooperate with the shared memory and the memory manager module so that an upstream processing module stores given data in the shared memory, and so that a downstream processing module receives the data location index for the stored given data and processes the stored given data based thereon. The device may further include a security module for selectively purging data from the shared memory.Type: GrantFiled: October 25, 2005Date of Patent: May 14, 2013Assignee: Harris CorporationInventors: Travis Brown, David March, Lloyd Palum
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Patent number: 8221174Abstract: An amphibious vehicle achieves a stable ride, maneuverability, and high speed. The vehicle includes a hull having a “V” center portion with outboard sponsons. The sponsons reside between the front wheel wells and the rear wheels wells for improving lift and transition to planing. Shallow tunnels begin in rear portions of the front wheel wells and taper into the sponsons to release water trapped in the wheel wells. Inward facing turning edges also reside between the front and rear wheel wells and improve in-water handling. Wheels are retractable by pneumatic cylinders in parallel with air shock absorbers and suspension cutout in the hull allow the suspension to lower through the hull. Flaps reside under suspension members and rise to cover the suspension cutouts when the wheels are retractable when the wheels are raised to reduce drag. A Morse cable couple a rack and pinion unit to a jet drive.Type: GrantFiled: September 3, 2008Date of Patent: July 17, 2012Inventor: J. David March
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Patent number: 8050708Abstract: The option management approach for SDRs includes control of installation and/or access to waveform features and/or platform features. A software-defined radio may include an antenna, a radio transceiver coupled to the antenna, and at least one memory storing a master feature database including a plurality of selectable waveform features and a plurality of selectable platform features, and a selected options database including selected waveform features and selected platform features from the master feature database. A controller cooperates with the at least one memory to configure the selected options database based upon an input options file and to permit reconfiguration of the selected options database based upon a subsequent input options file. The controller also cooperates with the radio transceiver and the selected options database to operate the SDR based upon the selected waveform features and the selected platform features.Type: GrantFiled: April 12, 2007Date of Patent: November 1, 2011Assignee: Harris CorporationInventors: David March, Tibor Dobri, Mark Sanders
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Patent number: 7689207Abstract: A software-defined radio includes a pair of radio subsystems such as a red (command) and black (data) radio subsystem having an operating environment conforming to the Software Communications Architecture (SCA) specification, for example, as used for Joint Tactical Radio System (JTRS). A clock is read by at least one of the radio subsystems for determining time of day. A processor of the radio subsystem is operative for distributing the time of day to the radio subsystems using a global hardware timing pulse. Each processor can include a free-running timer to which any time sources within the pair of radio subsystems are set.Type: GrantFiled: October 17, 2005Date of Patent: March 30, 2010Assignee: Harris CorporationInventors: David Hinterberger, Lloyd Palum, Nicholas Stocks, David March, Terence W. O'Brien, Thomas Philbin
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Publication number: 20090061702Abstract: An amphibious vehicle achieves a stable ride, maneuverability, and high speed. The vehicle includes a hull having a “V” center portion with outboard sponsons. The sponsons reside between the front wheel wells and the rear wheels wells for improving lift and transition to planing. Shallow tunnels begin in rear portions of the front wheel wells and taper into the sponsons to release water trapped in the wheel wells. Inward facing turning edges also reside between the front and rear wheel wells and improve in-water handling. Wheels are retractable by pneumatic cylinders in parallel with air shock absorbers and suspension cutout in the hull allow the suspension to lower through the hull. Flaps reside under suspension members and rise to cover the suspension cutouts when the wheels are retractable when the wheels are raised to reduce drag. A Morse cable couple a rack and pinion unit to a jet drive.Type: ApplicationFiled: September 3, 2008Publication date: March 5, 2009Inventor: J. David March
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Publication number: 20080253434Abstract: The option management approach for SDRs includes control of installation and/or access to waveform features and/or platform features. A software-defined radio may include an antenna, a radio transceiver coupled to the antenna, and at least one memory storing a master feature database including a plurality of selectable waveform features and a plurality of selectable platform features, and a selected options database including selected waveform features and selected platform features from the master feature database. A controller cooperates with the at least one memory to configure the selected options database based upon an input options file and to permit reconfiguration of the selected options database based upon a subsequent input options file. The controller also cooperates with the radio transceiver and the selected options database to operate the SDR based upon the selected waveform features and the selected platform features.Type: ApplicationFiled: April 12, 2007Publication date: October 16, 2008Applicant: Harris CorporationInventors: David March, Tibor Dobri, Mark Sanders
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Publication number: 20070094463Abstract: A mobile wireless communications device may include a wireless transceiver, a series of processing modules, a shared memory connected the plurality of processing modules and to the wireless transceiver, and a memory manager module for generating respective data location indices for data stored in the shared memory. The processing modules may cooperate with the shared memory and the memory manager module so that an upstream processing module stores given data in the shared memory, and so that a downstream processing module receives the data location index for the stored given data and processes the stored given data based thereon. The device may further include a security module for selectively purging data from the shared memory.Type: ApplicationFiled: October 25, 2005Publication date: April 26, 2007Applicant: Harris Corporation, Corporation of the State of DelawareInventors: Travis Brown, David March, Lloyd Palum
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Publication number: 20070087734Abstract: A software-defined radio includes a pair of radio subsystems such as a red (command) and black (data) radio subsystem having an operating environment conforming to the Software Communications Architecture (SCA) specification, for example, as used for Joint Tactical Radio System (JTRS). A clock is read by at least one of the radio subsystems for determining time of day. A processor of the radio subsystem is operative for distributing the time of day to the radio subsystems using a global hardware timing pulse. Each processor can include a free-running timer to which any time sources within the pair of radio subsystems are set.Type: ApplicationFiled: October 17, 2005Publication date: April 19, 2007Applicant: HARRIS CORPORATIONInventors: David Hinterberger, Lloyd Palum, Nicholas Stocks, David March, Terence O'Brien, Thomas Philbin
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Publication number: 20070087735Abstract: A software-defined radio includes an executable radio software system operable with a radio circuit and conforming to the software communications architecture (SCA) specification and defining an operating environment that allows a waveform application to operate with a radio circuit for transmitting and receiving voice and data. An extensible Human-Machine Interface (HMI)plugin module is operable for allowing a selected waveform application to integrate with the radio circuit and provide an HMI user interface.Type: ApplicationFiled: October 18, 2005Publication date: April 19, 2007Applicant: Harris CorporationInventors: David March, Glen Dragon, Christopher Page, Michael Wilkerson-Barker
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Publication number: 20050054228Abstract: For heating a pipe-in-pipe pipeline with power provided through an electric cable, mid-line connector is provided including: a connector housing joinable to the outer pipe of the pipeline; a blank pipe positioned within the connector housing and joinable to the inner pipe of the pipeline; at least one pocket mounted in the connector housing, wherein the cable is mateable with the at least one pocket; a blank pipe conductor electrically coupled between the at least one pocket and the blank pipe; and an outer pipe conductor electrically coupled between the at least one pocket and the outer pipe.Type: ApplicationFiled: April 29, 2004Publication date: March 10, 2005Inventor: David March
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Patent number: 6808430Abstract: An amphibious vehicle which on land looks remarkably like a conventional automobile. The wheels may be raised when the vehicle is in the water. The engine is placed in the stern, directly over the jet and transaxle, which provides room for four passengers. The vehicle has plates which slide under the wheels for use in water, and the plates do not extend up over the sides of the wheel wells.Type: GrantFiled: April 11, 2003Date of Patent: October 26, 2004Inventor: J. David March
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Patent number: 5313846Abstract: A sample introduction valve for spectrometers for selectively directing sample flow from two or more sources in which a slideably mounted shuttle provides in one position a pass through for one source and a by-pass for the other source and in a second position the opposite result.Type: GrantFiled: June 10, 1991Date of Patent: May 24, 1994Assignee: Leeman Labs Inc.Inventors: David A. March, Peter G. Brown, David A. Hotham