| Patent Number |
Title Of Patent |
Date Issued |
| 7367789 |
Device for maintaining a static seal of a high pressure pump |
May 6, 2008 |
| A pressure enclosure includes a first component having an opening, a second component coupled to the first component in a position over the opening, a third component positioned between the first and second components and covering the opening, and a load chamber defined by a space be |
| 5111736 |
Vented static seal assembly |
May 12, 1992 |
| A seal assembly for a high pressure pump where there is an O-ring positioned in a seal groove having side seal surfaces and a back seal surface, with said O-ring being exposed alternately to high and low pressures in the pumping chamber. A pressure relief passageway is provided to th |
| 5050895 |
High pressure dynamic seal |
September 24, 1991 |
| A seal assembly having a backup ring through which a piston reciprocates. There is a seal sleeve made of a non-abrading, extrusion resistant material that surrounds the piston at a location forwardly of the backup ring. The backup ring has an opening to receive the piston, and the op |
| 4536135 |
High pressure liquid piston pump |
August 20, 1985 |
| A piston and a cylinder within a pump housing cooperate with the inner walls of the housing to form a high-pressure reservoir surrounding the cylinder to provide a continuous compressive force thereon to prevent tensile stresses in the cylinder during pumping operations to prevent fa |
