Seal for a joint or juncture – Seal between relatively movable parts – Piston ring or piston ring expander or seat therefor
Patent
1998-08-26
2000-09-19
Noland, Thomas P.
Seal for a joint or juncture
Seal between relatively movable parts
Piston ring or piston ring expander or seat therefor
277626, 277644, F16J 914
Patent
active
061200352
ABSTRACT:
An end cap with a inwardly flanged bevel tapered seal utilized on sample cylinders for pipeline applications that provides a better means for sealing the sample cylinder. The present invention specifically relates to mating ring seal members having a beveled mitered interface and each member having an inward flange or lip. The preferred embodiment of the invention was designed with a sample cylinder in mind wherein the sample cylinder has an end cap with a purging port and a piston that reciprocates within said sample cylinder. The typical sample cylinder is designed such that contents in the internal sampling chamber can be purged through the purging port of the end cap by plunging the piston inside the sampling chamber against the end cap in a reciprocating fashion. When purging occurs, sometimes a residual of the contents remains behind, particularly around the seal of the end cap and the seal of the piston between the piston and the internal side wall of the sampling chamber and between the end cap and the side wall. The inwardly flanged beveled seal members are designed to eliminate space or gaps where residue may be trapped.
REFERENCES:
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Derwent Abstract of SU 1737192 Published May 1992 by Shuiskii Design of Solid Piston Ring Employes Partial Redial annd Axial Slits to Provide Self-Expansion on Wear in Conjunction with Expander Ring in Piston Groove.
Noland Thomas P.
Stallion Mark E.
Welker Engineering Company
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