Rotary seal
OwnerRodric J. Phillipsinventor
Life of this patent
Estimating the term…
Abstract
A seal includes an annular seal body and an annular lip attached to the seal body and extending radially outwards from the seal body. The annular lip has a stem and a tip and is attached to the seal body in a manner allowing deflection of the lip relative to the seal body.
Claims14
A rotational assembly including a stationary part, a rotary part mounted to rotate relative to the stationary part about an axis, and a seal attached to the rotary part for rotation therewith, the seal being annular and coaxial with the rotary part and comprising a seal body and a lip attached to the seal body and extending outwards from the seal body, the seal body being attached to the rotary part in a manner that provides a seal between the seal body and the rotary part, and the lip having a stem and a tip and being attached to the seal body in a manner allowing deflection of the lip relative to the seal body, and wherein the tip engages the stationary part of the rotational assembly when the rotary part of the rotational assembly is not rotating or is rotating at a low speed and tends to lift away from the stationary part when the rotary part is rotating at higher speed.
A housing comprising a non-rotary part, a rotary part mounted to rotate relative to the non-rotary part about an axis, and an annular seal attached to the rotary part for rotation therewith, the seal being annular and coaxial with the rotary part and comprising a seal body and a lip attached to the seal body and extending outwards from the seal body, the lip having a stem and a tip and being attached to the seal body in a manner allowing deflection of the lip relative to the seal body, and wherein the tip engages the non-rotary part of the housing when the rotary part of the housing is not rotating or is rotating at a low speed and tends to lift away from the non-rotary part when the rotary part is rotating at higher speed.
Dependencies are inferred from the claim text.