Thao M Hoang

US Patent:

7318426, Jan 15, 2008

Filed:

Oct 5, 2001

Appl. No.:

09/972449

Inventors:

Thao Hoang - Laguna Niguel CA, US

Assignee:

Circle Seal Controls, Inc. - Corona CA

International Classification:

F02B 43/00

US Classification:

123527, 123525, 123 1 A

Abstract:

A fuel-control manifold has a non-integral body with at least three pieces joined together. The fuel-control manifold has a tank port, an engine supply port, a fueling port, and a shutoff valve, all in the upper body segment. The shutoff valve includes a controllable shutoff valve closure having a shutoff-valve first side in fluid flow communication with the tank port and a shutoff-valve second side in fluid flow communication with the engine supply port and with the fueling port. There are a defueling port in a lower body segment, a vent port in the upper body segment, and a defuel/vent valve in a middle body segment. The defuel/vent valve includes a controllable ball-valve defueling closure having a defueling-valve first side in fluid-flow communication with the shutoff-valve second side and a defueling-valve second side in fluid-flow communication with the defueling port, and a controllable ball-valve vent closure having a vent-valve first side in fluid-flow communication with the vent port, and a vent-valve second side in fluid-flow communication with the defueling-valve second side. The defueling closure and the vent closure are mounted on a common defuel/vent valve stem, and the defueling closure and the vent closure cannot be open at the same time.

US Patent:

20200248440, Aug 6, 2020

Filed:

Jan 31, 2019

Appl. No.:

16/264590

Inventors:

- Winston Salem NC, US
Yen Chuh - Irvine CA, US
Thao Hoang - Arlington WA, US

International Classification:

E03C 1/05
G05D 23/13
B64D 11/02

Abstract:

A system and related method for touchless control of an aircraft lavatory water supply is disclosed. An aircraft lavatory touchless manifold includes dual solenoid powered water valves opening and closing to regulate water flow through each of a cold conduit and a hot conduit as commanded by user touchless input to a manifold microcontroller commanding the valves. An aircraft input commands a temperature range while a thermal sensor in a mixed water conduit provides output temperature feedback to the manifold microcontroller for positive control of the output temperature. The manifold microcontroller commands opening and closing of the dual solenoid powered valves to create a ratio of opening time between the valves. The solenoid powered valves provide a cost effective and reliable solution offering efficient linear valve operation and effective temperature and flow control.