12 Jan 2018 · Visual Foxpro 8 Crack Full Version License Code Download Visual Foxpro 8 Crack Full Version. Also, it contains tools to decompile RAR archives and.crack password1. Field of the Invention
The present invention relates to a fluid driven sealing assembly for sealing against and relative to a cylindrical shaft to thereby seal a fluid. More particularly, the invention relates to a fluid-driven sealing assembly for sealing a fluid between a cylindrical shaft and a container disposed about the shaft for application of a viscous material to the shaft.
2. Description of the Prior Art
The prior art includes various types of fluid driven sealing assemblies for sealing a cylindrical shaft relative to a cylindrical container. The cylindrical shaft is oftentimes disposed in a hole formed in a rock formation, and the cylindrical container is oftentimes installed in a metal casing for the well. These fluids are oftentimes viscous and must be driven through the annulus between the shaft and the container.
The prior art also includes various types of seals for the fluid seal assembly. U.S. Pat. No. 2,701,900 to Larson discloses a rotary piston with a peripheral seal to provide a fluid seal.
U.S. Pat. No. 3,716,158 to Green discloses a seal assembly which uses a circular piston to apply a constant pressure to the surface of the seal.
U.S. Pat. No. 3,893,443 to Hunt discloses a sealing assembly which utilizes a bladder-type seal which includes a bladder on one side of the shaft for sealing between the shaft and the container.
U.S. Pat. No. 3,943,829 to Barquin et al discloses a sealing assembly in which the fluid is sealed by a flexible bladder which is urged outwardly against the outer surface of the shaft by a fluid under pressure.
U.S. Pat. No. 4,741,370 to Bielinski discloses a sealing assembly which provides a rigid seal on the shaft and a bladder-type seal on the container. The bladder-type seal is compressed by the shaft to provide a fluid seal.
U.S. Pat. No. 4,850,746 to Hartshorn discloses a sealing assembly in which the fluid is sealed by a plurality of pistons which are urged outwardly by a fluid under pressure. The pistons are applied to a flexible bladder which is compressed 0b46394aab