Patent ID: 6592337
Filing Date: 2003-07-15
Classification: F16J

Abstract:
A lip ring for sealing a rotary shaft surface to prevent fluid from moving between a high-pressure area and a low-pressure area, the rotary shaft having a rotary axis and extending between the high-pressure area and the low-pressure area, comprising:a ring surface located around the rotary shaft; a plurality of first portions formed on the ring surface to slidably contact the rotary shaft surface, said first portions being placed at a first predetermined angle with respect to the rotary axis, wherein said first portions guide the fluid towards a space between the ring surface and the rotary shaft surface as the rotary shaft is rotated; and a plurality of second portions formed on the ring surface at a second predetermined angle with respect to the rotary axis, wherein said second portions prevent the fluid in the space from leaking into the low-pressure area.