Gregory A Duncan from Placentia, CA, age 71

Medicine Doctors

Gregory J. Duncan

view source

Specialties:

Orthopaedic Surgery, Hand Surgery

Work:

Gregory J Duncan MD
1200 Marshall St, Crescent City, CA 95531
7074651126 (phone), 7074650937 (fax)

Education:

Medical School
Johns Hopkins University School of Medicine
Graduated: 1986

Procedures:

Carpal Tunnel Decompression
Hallux Valgus Repair
Shoulder Arthroscopy
Shoulder Surgery
Arthrocentesis
Knee Arthroscopy
Lower Arm/Elbow/Wrist Fractures and Dislocations
Lower Leg/Ankle Fractures and Dislocations
Wound Care

Conditions:

Fractures, Dislocations, Derangement, and Sprains
Hallux Valgus
Internal Derangement of Knee
Internal Derangement of Knee Cartilage
Internal Derangement of Knee Ligaments

Languages:

English
Spanish

Description:

Dr. Duncan graduated from the Johns Hopkins University School of Medicine in 1986. He works in Crescent City, CA and specializes in Orthopaedic Surgery and Hand Surgery. Dr. Duncan is affiliated with Sutter Coast Hospital.

Gregory S. Duncan

view source

Specialties:

Podiatric Medicine

Work:

Gregory S Duncan DPM
3526 Jersey Rdg Rd, Davenport, IA 52807
5633553233 (phone), 5633558990 (fax)

Trinity Center For Wound Care
4480 Utica Rdg Rd STE 110, Bettendorf, IA 52722
5637425100 (phone), 5637425105 (fax)

Procedures:

Arthrocentesis
Hallux Valgus Repair

Conditions:

Hallux Valgus
Plantar Fascitis
Tinea Pedis

Languages:

English

Description:

Dr. Duncan works in Davenport, IA and 1 other location and specializes in Podiatric Medicine. Dr. Duncan is affiliated with Genesis Medical Center-Davenport West, UnityPoint Health Trinity Bettendorf and Unitypoint Health Trinity Regional Medical Center.

Gregory L. Duncan

view source

Specialties:

Psychologist

Work:

East Carolina University PhysiciansEast Carolina University Physicians Psychiatric Outpatient Clinic
905 Johns Hopkins Dr, Greenville, NC 27834
2527441406 (phone), 2527444243 (fax)

Procedures:

Psychological and Neuropsychological Tests

Languages:

English
Spanish

Description:

Dr. Duncan works in Greenville, NC and specializes in Psychologist. Dr. Duncan is affiliated with Vidant Beaufort Hospital and Vidant Medical Center.

Gregory John Duncan

view source

Specialties:

Orthopaedic Surgery
Surgery
Surgery of the Hand

Education:

Johns Hopkins University (1986)

Name / Title

Company / Classification

Phones & Addresses

Gregory B. Duncan
Director, Treasurer

FITNESS WATER INC

5520 Trabuco Rd, Irvine, CA 92620
301 Frst Ave, Laguna Beach, CA 92651

Gregory Duncan

Riviera Beverages, LLC
Beverage Bottler · Mfg Bottled/Canned Soft Drinks

12782 Monarch St, Garden Grove, CA 92841
5120 Campus Dr, Newport Beach, CA 92660
7145491379, 7148955169

Gregory Scott Duncan

HYGIENITECH OF ARKANSAS, LLC

Gregory B. Duncan

Battle Ready, LLC
Manufacture and Distribute Food and Beve

5520 Trabuco Rd, Irvine, CA 92620

Us Patents

Air Driven Diaphragm Pump
view source
US Patent:

56072902, Mar 4, 1997
Filed:

Nov 7, 1995
Appl. No.:

8/554726
Inventors:

Gregory S. Duncan - Corona CA
Assignee:

Wilden Pump & Engineering Co. - Grand Terrace CA
International Classification:

F04B 1700
US Classification:

417393
Abstract:

A pump having a center section including an actuator housing and an air valve is arranged with air chambers to either side of the actuator housing. Diaphragms are associated with the air chambers to create enclosed cavities for alternately pressurizing and venting the diaphragms. The actuator uses a pilot shifting shaft which is shuttled by movement of the diaphragms. An air valve is controlled by the shuttle shifting shaft to control flow to and from the air chambers. The passageways from the air chambers to exhaust find the passage to the outlet being at least as restrictive to air flow as the remainder of the passageways so as to prevent major pressure decreases within the actuator body. A diffuser includes a thin space between two surfaces into which the exhaust is directed. One of the surfaces is associated with a porous block of material.

Air Driven Diaphragm Pump
view source
US Patent:

59576707, Sep 28, 1999
Filed:

Aug 26, 1997
Appl. No.:

8/920081
Inventors:

Gregory S. Duncan - Huntington Beach CA
Eric L. Forman - Rancho Cucamonga CA
Assignee:

Wilden Pump & Engineering Co. - Colton CA
International Classification:

F04B 4306
US Classification:

417395
Abstract:

A pump having a center section including an actuator housing and an air valve is arranged with air chambers to either side of the actuator housing. Diaphragms are associated with the air chambers to create enclosed cavities for alternately pressurizing and venting the air chambers. Pumping chambers are positioned outwardly of the diaphragms and assembled with intake and exhaust manifolds and one-way valves to pump materials with operation of the diaphragms. The actuator uses a pilot shifting shaft which is shuttled by movement of the diaphragms. An air valve is controlled by the pilot shifting shaft to control flow to and from the air chambers. Diffusers include outwardly tapered oblong holes with ports from the air valves. An expansion chamber surrounds the diffusers and a exit to a standard muffler provides a smaller cross-sectional area than the diffuser outlet cross-sectional area.

Flow And Pressure Stabilization Systems, Methods, And Devices
view source
US Patent:

20190332130, Oct 31, 2019
Filed:

Jul 9, 2019
Appl. No.:

16/506042
Inventors:

- Riverside CA, US
Alvin Ye - Ontario CA, US
James Stanley Burke - Glendora CA, US
Gregory Scott Duncan - Huntington Beach CA, US
International Classification:

G05D 16/06
F15B 13/00
G05D 16/04
F16K 47/16
F16K 31/126
F16K 17/06
F16K 17/04
F16K 31/385
G05D 7/01
Abstract:

A flow and pressure stabilization device includes a housing; a first fluid chamber; a gas chamber; a deformable bladder that separates the first fluid chamber from the gas chamber, the deformable bladder comprising a longitudinally protruding portion shaped such that, when a pressure in the gas chamber is greater than a pressure in the first fluid chamber, the longitudinally protruding portion extends toward the first fluid chamber; and a valve in fluid communication with a fluid outlet, the valve including: a second fluid chamber in fluid communication with the first fluid chamber; a fluid port in fluid communication with the fluid outlet; and a deformable diaphragm positioned adjacent to and biased toward the fluid port.

Flow And Pressure Stabilization Systems, Methods, And Devices
view source
US Patent:

20190056756, Feb 21, 2019
Filed:

Dec 1, 2017
Appl. No.:

15/769191
Inventors:

- Riverside CA, US
Alvin Ye - Ontario CA, US
James Stanley Burke - Glendora CA, US
Gregory Scott Duncan - Huntington Beach CA, US
International Classification:

G05D 16/06
F16K 17/04
F16K 17/06
F16K 31/126
F16K 31/385
G05D 7/01
F16K 47/16
Abstract:

A flow and pressure stabilization device comprises a housing; a first fluid chamber; a gas chamber; a deformable bladder that separates the first fluid chamber from the gas chamber and at least partially defines a volume of the first fluid chamber; a second fluid chamber in fluid communication with the first fluid chamber via a fluid passage; and a variable flow valve in fluid communication with the second fluid chamber, the variable flow valve comprising: a fluid port in fluid communication with a fluid outlet; a deformable diaphragm positioned adjacent the fluid port, the diaphragm at least partially defining a volume of the second fluid chamber; and an outflow control button coupled to the diaphragm and extending at least partially into the fluid port, the outflow control button comprising an at least partially tapered surface.