JOHN E NEWMAN
Vehicle Board in Norristown, PA
License number
Pennsylvania MV025034L
Category
Vehicle Board
Type
Vehicle Salesperson
Address
Address
Norristown, PA 19401
Personal information
See more information about JOHN E NEWMAN at radaris.comName
Address
Phone
449 Spencer Lane Ext, Glenshaw, PA 15116
452 Jenna Ln #5-D, Easton, PA 18045
577 Paterno Dr APT 2, Harleysville, PA 19438
575 Apollo Dr, Freedom, PA 15042
Professional information
System And Process For Detecting Leaks In Sealed Articles
US Patent:
6843107, Jan 18, 2005
Filed:
Aug 15, 2003
Appl. No.:
10/641545
Inventors:
John W. Newman - Norristown PA, US
Steve Thayer - Norristown PA, US
Steve Thayer - Norristown PA, US
International Classification:
G01M 334
US Classification:
73 493, 3562371, 356 355, 73 492
Abstract:
A system and method for leak testing a plurality of hermetic electronic packages of the type that have an internal chamber that is isolated from ambient conditions by a seal structure is advantageously designed to be able to calculate the leak rate of each individual device in a manner that is independent of structural manufacturing variances that typically exist within a sampling of such devices. The method preferably involves positioning a plurality of the hermetic electronic packages within a test area, and then stimulating the hermetic electronic packages with a modulated input of energy, such as by varying the ambient pressure about the devices. A property such as the physical position of one portion of a lid of each of the hermetic electronic packages is then sensed. The sensed property is one that is known to change as a first function of the modulated input of energy and also as a second function of pressure conditions within the hermetically sealed internal chamber. The first and second functions are linearly independent of each other.