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. 11, 1980
Filed:
Mar. 26, 1979
Jacky Volpeliere, Gardanne, FR;
Aluminum Pechiney, Lyons, FR;
Abstract
A novel device for closing the dome of a tank with gravity and/or pneumatic discharge, comprising a closure cap member which is applied against a seat provided with a resilient sealing gasket, and a closure mechanism for holding the cap member on the seat, wherein the cap member comprises a protection cap provided with fixing means for the closure mechanism and a bearing surface whose surface is a surface of revolution and which is formed by at least one segment of a straight line and/or arc of a curve, wherein the seat comprises a support plate acting as an abutment for the bearing suface of the cap member, a resilient gasket which is loaded in bending by contact with the bearing surface of the cap member, and a co-operating flange for fixing the gasket on the support plate, and wherein the closure mechanism is operable with a low mechanical force. The novel dome closure device is self-cleaning, self-sealing, operable with a low force, capable of being automated and having a high degree of safety for the operator.