David Andrew Diggins
Engineers at Marienfeld, Midland, TX
License number
Colorado 42453
Issued Date
Oct 7, 2008
Renew Date
Nov 1, 2010
Expiration Date
Oct 31, 2013
Type
Professional Engineer
Address
Address
300 N Marienfeld St STE 360, Midland, TX 79701
Personal information
See more information about David Andrew Diggins at radaris.comName
Address
Phone
703 N Judson St, Navasota, TX 77868
6201 S County Road 1178, Midland, TX 79706
3000 Fredna Pl, Midland, TX 79707
509 Delmar St #503, Midland, TX 79703
4500 Lanham St #B, Midland, TX 79705
Professional information
See more information about David Andrew Diggins at trustoria.com
System And Method For Compressing Natural Gas And For Refueling Motor Vehicles
System And Method For Compressing Natural Gas And For Refueling Motor Vehicles
US Patent:
5694985, Dec 9, 1997
Filed:
Oct 18, 1995
Appl. No.:
8/544870
Inventors:
David Andrew Diggins - Midland TX
Assignee:
Pinnacle CNG Systems, LLC - Midland TX
International Classification:
B65B 3100, B67C 300
US Classification:
141 4
Abstract:
A system and method for selectively refueling a plurality of vehicle storage tanks with compressed natural gas (CNG) are provided that utilize a compressor system operable at suction pressures ranging from about 330 to about 3600 psig and discharge pressures ranging from about 330 to about 4500 psig in combination with means for temporarily storing CNG at an intermediate storage pressure of from about 330 to about 4500 psig, preferably from about 1700 to about 2700 psig, means for selectively filling vehicle storage tanks with CNG from an inlet source, from the compressor discharge and from the intermediate storage tanks, and means for selectively supplying CNG to the compressor inlet at either the available line pressure or the intermediate storage pressure.
System And Method For Compressing Natural Gas And For Refueling Motor Vehicles
System And Method For Compressing Natural Gas And For Refueling Motor Vehicles
US Patent:
5351726, Oct 4, 1994
Filed:
Sep 27, 1993
Appl. No.:
8/127426
Inventors:
David A. Diggins - Midland TX
Assignee:
Wagner & Brown, Ltd. - Midland TX
International Classification:
B65B 3100, B67C 300
US Classification:
141 4
Abstract:
A system and method for refueling vehicle storage tanks with compressed natural gas (CNG) are provided that utilize a single stage compressor operable at suction pressures ranging from about 330 to about 3600 psig and discharge pressures ranging from about 330 to about 4500 psig in combination with a temporary storage tank for CNG at an intermediate storage pressure of from about 330 to about 4500 psig, preferably from about 1700 to about 2700 psig, selectively filling vehicle storage tanks with CNG from an inlet source, from the compressor discharge and from the intermediate storage tanks, and selectively supplying CNG to the compressor inlet at either the available line pressure or the intermediate storage pressure.
Cng Refueling System For Multiple Vehicles
Cng Refueling System For Multiple Vehicles
US Patent:
5538051, Jul 23, 1996
Filed:
Oct 4, 1994
Appl. No.:
8/317903
Inventors:
Jack E. Brown - Midland TX
David A. Diggins - Midland TX
David A. Diggins - Midland TX
Assignee:
Pinnacle CNG Systems, LLC - Midland TX
International Classification:
B65B 3100, B67C 300
US Classification:
141 18000
Abstract:
A system and method for selectively refueling a plurality of vehicle storage tanks with compressed natural gas (CNG) are provided that utilize a compressor system operable at suction pressures ranging from about 330 to about 3600 psig and discharge pressures ranging from about 330 to about 4500 psig in combination with a tank for temporarily storing CNG at an intermediate storage pressure of from about 330 to about 4500 psig, preferably from about 1700 to about 2700 psig, apparatus for selectively filling vehicle storage tanks with CNG from an inlet source, from the compressor discharge and from the intermediate storage tanks, and apparatus for selectively supplying CNG to the compressor inlet at either the available line pressure or the intermediate storage pressure.
System And Method For Dispensing Pressurized Gas
System And Method For Dispensing Pressurized Gas
US Patent:
5628349, May 13, 1997
Filed:
Jan 25, 1995
Appl. No.:
8/377975
Inventors:
David A. Diggins - Midland TX
Jack E. Brown - Midland TX
Jack E. Brown - Midland TX
Assignee:
Pinnacle CNG Systems, LLC - Midland TX
International Classification:
B65B 104, B65B 304
US Classification:
141 3
Abstract:
A system and method for dispensing pressurized gas, especially CNG, in which the temperature inside the receiving tank is preferably monitored and is used by a computer to adjust the fill pressure to compensate for the temperature and pressure rise attributable to adiabatic compression of the gas inside the receiving tank. The system also utilizes the temperature and pressure of the receiving tank to calculate the volume of gas dispensed.
Dual-Service System And Method For Compressing And Dispensing Natural Gas And Hydrogen
Dual-Service System And Method For Compressing And Dispensing Natural Gas And Hydrogen
US Patent:
7168464, Jan 30, 2007
Filed:
Sep 9, 2004
Appl. No.:
10/937055
Inventors:
David A. Diggins - Midland TX, US
Assignee:
Pinnacle CNG Systems, LLC - Midland TX
International Classification:
B65B 1/04
US Classification:
141105, 141 9, 141 82, 141 95, 141192, 141302, 2221456, 2221458, 137263, 137602
Abstract:
A dual service system and method for selectively compressing and dispensing methane, hydrogen, and variable mixtures of methane and hydrogen for use as a gaseous fuel. The use of an in-line gas density meter, hydraulic intensifier, pressurized gas cooler, optional intermediate storage and multiple dispensers are disclosed. An inline gas density meter is used in combination with a programmable logic controller and a control valve on the hydrogen supply line to create a closed feedback loop for selectively controlling the hydrogen content of the resultant pressurized fuel gas.