Patents by Inventor John William Gilman
John William Gilman 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: 10443210Abstract: A mobile digging and backfill system for removing and collecting material above a buried utility. The system comprises a mobile chassis, a collection tank mounted to the chassis, a water pump mounted to the chassis for delivering a pressurized liquid flow against the material for loosening the material at a location, a vacuum pump connected to the collection tank so that an air stream created by the vacuum pump draws the material and the fluid from the location into the collection tank, and at least one backfill reservoir mounted to the chassis for carrying backfill for placement at the location.Type: GrantFiled: November 13, 2017Date of Patent: October 15, 2019Assignee: McLaughlin Group, Inc.Inventors: Charles Robert Maybury, Jr., John William Gilman
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Publication number: 20180066410Abstract: A mobile digging and backfill system for removing and collecting material above a buried utility. The system comprises a mobile chassis, a collection tank mounted to the chassis, a water pump mounted to the chassis for delivering a pressurized liquid flow against the material for loosening the material at a location, a vacuum pump connected to the collection tank so that an air stream created by the vacuum pump draws the material and the fluid from the location into the collection tank, and at least one backfill reservoir mounted to the chassis for carrying backfill for placement at the location.Type: ApplicationFiled: November 13, 2017Publication date: March 8, 2018Inventors: Charles Robert Maybury, JR., John William Gilman
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Patent number: 9816250Abstract: A mobile digging and backfill system for removing and collecting material above a buried utility. The system comprises a mobile chassis, a collection tank mounted to the chassis, a water pump mounted to the chassis for delivering a pressurized liquid flow against the material for loosening the material at a location, a vacuum pump connected to the collection tank so that an air stream created by the vacuum pump draws the material and the fluid from the location into the collection tank, and at least one backfill reservoir mounted to the chassis for carrying backfill for placement at the location.Type: GrantFiled: July 25, 2016Date of Patent: November 14, 2017Assignee: McLaughlin Group, Inc.Inventors: Charles Robert Maybury, John William Gilman
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Publication number: 20170145656Abstract: A mobile digging and backfill system for removing and collecting material above a buried utility. The system comprises a mobile chassis, a collection tank mounted to the chassis, a water pump mounted to the chassis for delivering a pressurized liquid flow against the material for loosening the material at a location, a vacuum pump connected to the collection tank so that an air stream created by the vacuum pump draws the material and the fluid from the location into the collection tank, and at least one backfill reservoir mounted to the chassis for carrying backfill for placement at the location.Type: ApplicationFiled: July 25, 2016Publication date: May 25, 2017Inventors: Charles Robert Maybury, John William Gilman
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Patent number: 9399853Abstract: A mobile digging and backfill system for removing and collecting material above a buried utility. The system comprises a mobile chassis, a collection tank mounted to the chassis, a water pump mounted to the chassis for delivering a pressurized liquid flow against the material for loosening the material at a location, a vacuum pump connected to the collection tank so that an air stream created by the vacuum pump draws the material and the fluid from the location into the collection tank, and at least one backfill reservoir mounted to the chassis for carrying backfill for placement at the location.Type: GrantFiled: March 7, 2014Date of Patent: July 26, 2016Assignee: McLaughlin Group, Inc.Inventors: Charles Robert Maybury, John William Gilman
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Publication number: 20140182173Abstract: A mobile digging and backfill system for removing and collecting material above a buried utility. The system comprises a mobile chassis, a collection tank mounted to the chassis, a water pump mounted to the chassis for delivering a pressurized liquid flow against the material for loosening the material at a location, a vacuum pump connected to the collection tank so that an air stream created by the vacuum pump draws the material and the fluid from the location into the collection tank, and at least one backfill reservoir mounted to the chassis for carrying backfill for placement at the location.Type: ApplicationFiled: March 7, 2014Publication date: July 3, 2014Applicant: McLaughlin Group, Inc.Inventors: Charles Robert Maybury, John William Gilman
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Patent number: 8667717Abstract: A mobile digging and backfill system for removing and collecting material above a buried utility. The system comprises a mobile chassis, a collection tank mounted to the chassis, a water pump mounted to the chassis for delivering a pressurized liquid flow against the material for loosening the material at a location, a vacuum pump connected to the collection tank so that an air stream created by the vacuum pump draws the material and the fluid from the location into the collection tank, and at least one backfill reservoir mounted to the chassis for carrying backfill for placement at the location.Type: GrantFiled: December 21, 2012Date of Patent: March 11, 2014Assignee: McLaughlin Group, Inc.Inventors: Charles Robert Maybury, Jr., John William Gilman
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Patent number: 8336231Abstract: A mobile digging and backfill system for removing and collecting material above a buried utility. The system comprises a mobile chassis, a collection tank mounted to the chassis, a water pump mounted to the chassis for delivering a pressurized liquid flow against the material for loosening the material at a location, a vacuum pump connected to the collection tank so that an air stream created by the vacuum pump draws the material and the fluid from the location into the collection tank, and at least one backfill reservoir mounted to the chassis for carrying backfill for placement at the location.Type: GrantFiled: July 1, 2011Date of Patent: December 25, 2012Assignee: McLaughlin Group, Inc.Inventors: Charles Robert Maybury, Jr., John William Gilman
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Publication number: 20110258890Abstract: A mobile digging and backfill system for removing and collecting material above a buried utility. The system comprises a mobile chassis, a collection tank mounted to the chassis, a water pump mounted to the chassis for delivering a pressurized liquid flow against the material for loosening the material at a location, a vacuum pump connected to the collection tank so that an air stream created by the vacuum pump draws the material and the fluid from the location into the collection tank, and at least one backfill reservoir mounted to the chassis for carrying backfill for placement at the location.Type: ApplicationFiled: July 1, 2011Publication date: October 27, 2011Applicant: MCLAUGHLIN GROUP, INC.Inventors: Charles Robert Maybury, JR., John William Gilman
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Publication number: 20090133296Abstract: A mobile digging and backfill system for removing and collecting material above a buried utility. The system comprises a mobile chassis, a collection tank mounted to the chassis, a water pump mounted to the chassis for delivering a pressurized liquid flow against the material for loosening the material at a location, a vacuum pump connected to the collection tank so that an air stream created by the vacuum pump draws the material and the fluid from the location into the collection tank, and at least one backfill reservoir mounted to the chassis for carrying backfill for placement at the location.Type: ApplicationFiled: January 28, 2009Publication date: May 28, 2009Inventors: Charles Robert Maybury, JR., John William Gilman
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Patent number: 7484322Abstract: A mobile digging and backfill system for removing and collecting material above a buried utility. The system comprises a mobile chassis, a collection tank mounted to the chassis, a water pump mounted to the chassis for delivering a pressurized liquid flow against the material for loosening the material at a location, a vacuum pump connected to the collection tank so that an air stream created by the vacuum pump draws the material and the fluid from the location into the collection tank, and at least one backfill reservoir mounted to the chassis for carrying backfill for placement at the location.Type: GrantFiled: October 22, 2004Date of Patent: February 3, 2009Assignee: McLaughlin Group, Inc.Inventors: Charles Robert Maybury, Jr., John William Gilman
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Patent number: 7415748Abstract: A portable vacuum implement for use with a skid steer vehicle has a frame, a skid steer mounting saddle coupled to the frame and a motor mounted to the frame. A vacuum pump mounted on the frame is coupled to the motor so that the motor drives the vacuum pump. A collection tank mounted on the frame is coupled to the vacuum pump so that the vacuum pump pulls a vacuum through the collection tank. A vacuum head is connected to the collection tank by a first hose for vacuuming debris at an excavation site.Type: GrantFiled: October 6, 2004Date of Patent: August 26, 2008Assignee: McLaughlin Group, Inc.Inventors: Troy Devan Guhr, John William Gilman, Charles Robert Maybury, Jr.
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Patent number: 6615849Abstract: An automatic tank clean out system provided in the slurry collection tank a soil reduction system. When the slurry collection tank becomes full, the vacuum system is automatically shut down to prevent the slurry mixture from being drawn into the vacuum pump. When it becomes necessary to empty the slurry collection tank, the liquid contents can be drained through a valve in the tank. A series of nozzles, such as fan nozzles, are provided which are connected to a water supply pipe running axially through the tank. These fan nozzles are actuated to deliver high pressure water to automatically clean the tank.Type: GrantFiled: November 16, 2000Date of Patent: September 9, 2003Inventors: John William Gilman, Edward Kennedy
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Patent number: 6470605Abstract: A reduction system using water pressure and vacuum excavation and including a water supply tank, water pump, vacuum pump, slurry collection tank, a system for tilting the collection tank, handheld reduction tool, and a drive system. The reduction tool, or wand, is used to deliver high pressure fluid, such as water, to the ground in order to loosen soil directly in front of the tool. The tool includes diametrically opposed nozzles which are angled with respect to one another such that pressurized water delivered from the nozzles is directed in a fashion to slice the ground in a generally spiral or helical fashion as the tool is pressed downward into the ground. As the soil is loosened by the pressurized water delivered from the nozzles, the loosened soil is sucked away to form a hole in the ground, and such loosened soil (a slurry when mixed with the water) passes upwardly through the tool in a vacuum air-flow created by the vacuum pump and is deposited in the slurry collection tank.Type: GrantFiled: November 16, 2000Date of Patent: October 29, 2002Inventors: John William Gilman, Edward Kennedy