Patent ID: 8221251

Claim:
An articulated joint comprising: a first rotational member; a second rotational member coupled with and positioned generally coaxial to the first rotational member; a boot, wherein the boot defines, at least in part, a joint chamber having a first volume in a first configuration, and a second volume in a second configuration, and wherein the boot is selectively deformable in response to an increase in pressure in the joint chamber to increase the volume of the joint chamber, and wherein the volume of the joint chamber is selectively changed due to, at least in part, movement of an end of the boot relative to the second rotational member; a scraper extending from the end of the boot; and a radial shaft seal interposed within a channel of the boot and the second rotational member, wherein the channel and the scraper are separated by a retaining wall, wherein the channel is spaced and separate from the scraper, thereby defining a void between the seal and the end of the boot.