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:
Mar. 27, 1979
Filed:
Aug. 22, 1977
Gail W Graves, Richmond, TX (US);
Peabody Dore' Corporation, Fort Bend County, TX (US);
Abstract
A valve body for insertion in a fluid line having a sampling passageway extending from the interior to the exterior of the body for sampling from or injecting ingredients into the fluid line. A first annular tapered valve seat in the passageway and a second tubular valve seat in the passageway axially aligned with the first valve seat. A valve stem moves toward and away from said valve seats and includes a first tapered valve element adapted to seat on the first seat and a second cylindrical valve element adapted to seat on the second seat. Means rotatably move the valve stem towards and away from the valve seat for wiping the sealing areas upon closing. A plastic lining covers all of the interior areas of the valve that are exposed to contact with fluid flowing through the valve. The end of the stem moves to a position generally tangent to the internal diameter of the valve body for preventing material buildup in the passageway.