Search

Douglas L Smythe

from Perryville, MD
Age ~64
Get Report
Also known as:
Douglas Smyth
Phone and address:
1455 Principio Furnace Rd, Perryville, MD 21903
Related to:
Debra M Smythe, 63Shela R Schoenlein, 70Corena Odle, 50Diane Russell, 56Glynn Clark
Connected to:
Akie Smythe, 35Andrew C Smythe, 57Ashi K Smythe, 51Branden T Smythe, 45Bryan C Smythe, 64Danielle A Smythe, 33Dwayne D Smythe, 32Elio M Smythe, 64Glenn Smythe, 68Graham Smythe, 55

Douglas Smythe Phones & Addresses

  • 1455 Principio Furnace Rd, Perryville, MD 21903
  • 1223 Aiken Avenue Ext, Perryville, MD 21903 (410) 642-6305 (410) 642-6312
  • 9 Gail Rd, New Castle, DE 19720
  • Newark, DE
  • Tampa, FL
  • Hope Mills, NC
  • Havre de Grace, MD
  • 1223 Aiken Avenue Ext, Perryville, MD 21903 (443) 421-2782

Work

Position: Executive, Administrative, and Managerial Occupations

Education

Degree: Graduate or professional degree

Professional Records

License Records

Douglas Lee Smythe

Address:
Perryville, MD 21903
License #:
HL-0000639 - Active
Category:
Plumbing/HVACR
Issued Date:
Sep 30, 2014
Expiration Date:
Oct 31, 2018
Type:
Master HVACR Restricted

Publications

Us Patents

System For Automatic Real-Time Calibration Of Remotely-Located Capacitive-Type Fuel Quantity Measurement Probes

View page
US Patent:
56273045, May 6, 1997
Filed:
May 23, 1994
Appl. No.:
8/247239
Inventors:
Neil R. Jacob - Largo FL
Joe K. Winner - Clearwater FL
Douglas C. Smythe - Clearwater FL
Assignee:
Smiths Industries - Florham Park NJ
International Classification:
G01F 2500
US Classification:
73 173
Abstract:
A system including a method and means for trimming capacitive-type remotely-located fuel probes that eliminates the previously-used variable trim capacitor and substitutes a rugged, inexpensive, standard-value signature resistor connected between the AC input and ground to provide "calibration offset" data needed by the fuel measurement electronics to make a determination of actual probe capacitance. The system may be applied to any such probe having a blocking capacitor in series with the probe capacitor, which blocking capacitor insures accurate measurement of the signature resistor when the leakage resistance is significant. When applied to DC or AC FHC probes, the C. sub. fhc capacitor is replaced with a non-critical DC-blocking capacitor, that is typically at least 100 times greater in capacitance value than the C. sub. probe capacitor, and then a software modeled FHC algorithm may be used along with the signature resistor value, which acts as a pointer to a lookup table, to provide accurate, real-time calibration of the probe.

Discrete Input Determining Circuit And Method

View page
US Patent:
20190346488, Nov 14, 2019
Filed:
Jul 26, 2019
Appl. No.:
16/522839
Inventors:
- Grand Rapids MI, US
Douglas Clayton Smythe - Clearwater FL, US
International Classification:
G01R 19/00
H02H 3/32
G01R 15/04
G01R 19/165
G01R 31/02
Abstract:
A discrete input determining circuit is disclosed, which includes an input biasing network connected to a discrete input for providing a first input voltage, a voltage divider network for dividing the first input voltage into a second input voltage and a third input voltage, a first comparator, wherein a non-inverting input terminal of the first comparator receives the second input voltage, and a second comparator, wherein an inverting input terminal of the second comparator receives the third input voltage, wherein an inverting input terminal of the first comparator and a non-inverting input terminal of the second comparator receive a reference voltage, and an output terminal of the first comparator and an output terminal of the second comparator are configured to provide a logic output. A discrete input determining method is also disclosed.
Control profile
Douglas L Smythe from Perryville, MD, age ~64 Get Report