The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 19, 1985
Filed:
Dec. 10, 1984
James E Kilmoyer, Houston, TX (US);
Cameron Iron Works, Inc., Houston, TX (US);
Abstract
An improved valve with an improved stem seal including a body having a valve chamber, an inlet to and an outlet from the valve chamber, and a valve seat in the valve chamber, a valve member movable in the valve chamber and coacting with the valve seat to control flow through the valve, a valve stem connected to the valve member and extending through an opening in said body, means coacting with said stem to move said valve member, a stem sealing assembly positioned in said opening surrounding said stem and means for retaining the stem sealing assembly in position, said assembly including a wear resistant and corrosion resistant sealing ring having a plurality of internal and external grooves with internal and external sealing lips between the grooves, and an annular end recess opening toward the valve member, a soft sealing ring in each of the inner rod outer grooves fartherest from said valve member and a load ring positioned in said end recess and having a tapered external surface extending toward the axis of said stem in a direction toward said valve member. In a modified form of said sealing assembly the load ring also includes an internal taper extending toward the axis of said stem in a direction away from the valve member.