1
John William Gilman, Edward Kennedy: Earth reduction tool. Leatherwood Walker Todd & Mann P C, October 29, 2002: US06470605 (42 worldwide citation)

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 ...


2
John William Gilman, Edward Kennedy: Tank cleaning system. Leatherwood Walker Todd & Mann P C, September 9, 2003: US06615849 (23 worldwide citation)

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 sl ...


3
Charles Robert Maybury Jr, John William Gilman: Digging and backfill apparatus. McLaughlin Group, Nelson Mullins Riley & Scarborough, February 3, 2009: US07484322 (18 worldwide citation)

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 mater ...


4
Charles Robert Maybury Jr, John William Gilman: Digging and backfill apparatus. McLaughlin Group, Nelson Mullins Riley & Scarborough, December 25, 2012: US08336231 (12 worldwide citation)

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 mater ...


5
Troy Devan Guhr, John William Gilman, Charles Robert Maybury Jr: Vacuum implement for use with a skid steer. McLaughlin Group, Nelson Mullins Riley & Scarborough, August 26, 2008: US07415748 (9 worldwide citation)

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 i ...


6
Charles Robert Maybury Jr, John William Gilman: Digging and backfill apparatus. McLaughlin Group, Nelson Mullins Riley & Scarborough, March 11, 2014: US08667717 (5 worldwide citation)

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 mater ...


7
Charles Robert Maybury, John William Gilman: Digging and backfill apparatus. McLaughlin Group, Nelson Mullins Riley & Scarborough, July 26, 2016: US09399853 (1 worldwide citation)

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 mater ...


8
Charles Robert Maybury, John William Gilman: Digging and backfill apparatus. McLaughlin Group, Nelson Mullins Riley & Scarborough, November 14, 2017: US09816250

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 mater ...


9
Charles Robert Maybury, John William Gilman: Digging and backfill apparatus. McLaughlin Manufacturing Company, Nelson Mullins Riley & Scarborough, June 8, 2006: US20060117612-A1

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 mater ...


10
Charles Robert Maybury JR, John William Gilman: Digging and backfill apparatus. Nelson Mullins Riley & Scarborough, May 28, 2009: US20090133296-A1

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 mater ...