Patent ID: 9234590
Filing Date: 2016-01-12
CPC Classification: B05B,B29B,F16J,F16K,Y10T

Claim Text:
1. A shaft seal for reducing leakage between a high pressure side and a low pressure side, the seal comprising: a lip at a low pressure end of the shaft seal; a tapered cylindrical body extending from the lip, the tapered cylindrical body having a first diameter where the tapered cylindrical body meets the lip and the tapered cylindrical body having a second diameter at a distal end, the distal end exposed to a high pressure fluid; and an aperture the aperture passing through the lip and the tapered cylindrical body following an axis of the tapered cylindrical body, the aperture having a first end at the lip and the aperture having a distal second end, the aperture having a first inner diameter slightly greater than an outer diameter of the shaft at the first end and the aperture tapering to a second inner diameter at the distal end of the aperture, the second inner diameter being approximately the diameter of the shaft.