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. 12, 1991
Filed:
Sep. 15, 1989
Roberto Pavanel, Osnago, IT;
Cazzaniga S.p.A., Milan, IT;
Abstract
Butterfly valve with a sealing element in elastomeric material with an internal metal reinforcement, made of a substantially tubular outer valve body, with flow pipe connections for fluids at its extremities, in whcih there is a seal in elastomeric material encircling a disc-shaped, internally mobile shutter, equipped with a diametral axis shaft transversal to the valve body axis, protruding out of the same body and bearing the rotation commanding organs, the sealing element being equipped with an inside metal ring, axially extended substantially for the entire length of the same sealing element, and with external sealing reliefs, in correspondence of which there are related seatings in the external body, an ample elastic deformation of the elastomeric material being allowed in the sealed areas, made of a substantially tubular outer valve body, with flow pipe connections for fluids at its extremities, in which there is a seal in elastomeric material encircling a disc-shaped, internally mobile shutter, equipped with a diametral axis shaft protruding out of the body, with rotation controlling organs, transversal to the valve body axis, the sealing element being equipped with an inside metal ring, axially extended substantially for the entire length of the sealing element, and with external sealing reliefs, in correspondence of which there are related seatings in the external body, an ample elastic deformation of the elastomeric material being allowed in the sealed areas.