King Y Poon

7319191, Jan 15, 2008

Nov 1, 2002

10/286284

King L. Poon - Missouri City TX, US
James R. Harper - Richmond TX, US

Thermo Fisher Scientific Inc. - Sugar Land TX

H01J 15/00
H01J 5/00

174 5062, 174 5063, 174521, 361118, 361120

A signal adapter comprising an explosion proof housing, a circuit member disposed on an inside of the explosion proof housing, a signal input connector electrically connected to the circuit member, a signal output connector electrically connected to the circuit member, and a seal disposed on the inside of the explosion proof housing and around the circuit member, creating an explosion proof seal between the signal input connector and the signal output connector.

20030080757, May 1, 2003

Oct 31, 2002

10/284628

Thomas Groover - Houston TX, US
King Poon - Missouri City TX, US

G01R027/26

324/662000

In one embodiment, a proximity sensor is disclosed. The proximity sensor is adapted for use in a housing, such as an explosion-proof housing, and includes a compressible sensor plate and an interface board. The sensor plate is compressed during assembly of the housing. The proximity sensor interacts with other electrical components within and external to the housing. Furthermore, the proximity sensor may include, or interact with, a display. Components, including the proximity sensor, may be configured for use in a hazardous environment and designed to draw minimal current.

20050179447, Aug 18, 2005

Apr 8, 2005

11/102141

Thomas Groover - Houston TX, US
King Poon - Missouri City TX, US

THERMO ELECTRON CORPORATION - Houston TX

G01R027/26

324662000

A proximity sensor module includes a housing; and a proximity sensor disposed in the housing, wherein the proximity sensor comprises a sensor plate configured to contact inside of the housing such that substantially no gap exists between the sensor plate and the housing. The housing may be a substantially explosion-proof housing. The housing may include two members coupled by a thread engagement, wherein a sensor plate of the proximity sensor is placed off-center with respect to an axis of rotation for the thread engagement.