초록 ▼

A cylindrically curved rectangular face seal is provided for a cross-ported barrel type rotary valve member. The seal has a central flow orifice therethrough with an annular raised rib formed about the orifice and extending in a radial direction from the concave inner face of the seal. The opposite

A cylindrically curved rectangular face seal is provided for a cross-ported barrel type rotary valve member. The seal has a central flow orifice therethrough with an annular raised rib formed about the orifice and extending in a radial direction from the concave inner face of the seal. The opposite edges of the seal extending in an axial direction each have a notch or rib thereon for axial sliding engagement in grooves provided in the valve body. The annular rib about the orifice accommodates dimensional variation in the valve parts to ensure a rotary sliding seal on the rotary valve member.

대표청구항 ▼

1. A face seal for a rotary valve comprising: a unitary member of resiliently flexible material having a generally partial cylindrical configuration with an aperture therethrough, with a pair of spaced generally parallel margins and generally parallel radially inner and outer faces, said aperture ha

1. A face seal for a rotary valve comprising: a unitary member of resiliently flexible material having a generally partial cylindrical configuration with an aperture therethrough, with a pair of spaced generally parallel margins and generally parallel radially inner and outer faces, said aperture having a rib formed therearound on said radially inner face, wherein said parallel margins includes surfaces adapted for axial sliding engagement with corresponding portions of a valving chamber and wherein said rib is adapted for compression and sliding sealing on a rotary valve member.