Boots – shoes – and leggings
Patent
1981-12-14
1986-05-06
Krass, Errol A.
Boots, shoes, and leggings
73 40, 73 492, 340605, 364558, G01M 302, G06F 1520
Patent
active
045876193
ABSTRACT:
The specification discloses an electronic dynamic balance leak testing system utilizing a "live zero", wherein a source of test medium at a predetermined desired pressure or vacuum is connected to a part to be tested, and after the part is filled with the test medium, and an interval is provided for the system to stabilize the affects due to wave front oscillations, the test part is momentarily isolated from said test media and a microcomputer system is utilized, both to cause said isolation, and to measure the differential pressure existing at two points during the test. In a modification of our system which can dynamically project leak and accept or reject parts much sooner because of this projection feature, the rate of change of the differential pressure transducer is examined and is compared to a curve which is characteristic of the rate of change of a volume which is experiencing a predominately leak based change of pressure. When the rate of change is determined to be predominately a leak based change, the rate of change is determined to be a "Qualified Leak" or a qualified curve. In this case, after a predetermined sample time elapses from the point at which the curve was qualified, a reading of leakage is taken, such reading is then extrapolated to a full test time reading and compared to limits to see if a part is to be accepted or rejected.
REFERENCES:
patent: 2936611 (1960-05-01), Le Mat et al.
patent: 3100986 (1963-08-01), Starr et al.
patent: 3457775 (1969-07-01), Hinderer et al.
patent: 3465562 (1969-09-01), Donohoe
patent: 3800586 (1974-04-01), DeLatorre et al.
patent: 3872712 (1975-03-01), Westervelt et al.
patent: 3878376 (1975-04-01), Sholes, Jr. et al.
Patent Abstracts of Japan, vol. 4, No. 131, Sep. 13, 1980.
Furness Controls Limited, Catalog entitled "Production Line Leak Detectors".
Bordato James M.
Bott Theodore R.
Converse, III Vernon G.
Foerster, Jr. Charles E.
Herbst, Jr. Desra N.
Cosimano Edward R.
Krass Errol A.
Scans Associates, Inc.
LandOfFree
Method and apparatus for electronic leak testing does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and apparatus for electronic leak testing, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for electronic leak testing will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1578511