Measuring and testing – With fluid pressure – Leakage
Patent
1994-07-19
1995-08-08
Williams, Hezron E.
Measuring and testing
With fluid pressure
Leakage
73 38, G01N 304, G01N 326
Patent
active
054388619
ABSTRACT:
Condoms and other sheaths are tested for holes by drawing the sheath over a hollow porous mandrel having smaller openings at its head end than in the rest of its body, providing a difference between the pressure within the mandrel and the pressure outside the condom, and comparing the rate of change of pressure within the mandrel with the rate of change of a reference pressure. The mandrel is shaped such that powder particles in the inner surface of the condom are moved toward the head of the mandrel where the smaller openings are when a condom is drawn onto it, for substantially preventing the powder from clogging the larger pores below the head region of the mandrel.
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Porex Technologies, Product Brochures, ID #661-330-1098, 1989; #675330190, 1990; #79133072, 1992; #152330388; 1990; #578330388, 1990; #725330291, 1992; #152330388, 1992; #586330688, 1990; #725330291, 1990; #788330692, 1992; #586330688, 1990.
Sisbarro Frederick P.
Thomsen Glenn W.
Carter-Wallace Inc.
Wiggins J. David
Williams Hezron E.
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