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US 2014/0191147 A1Published application
Aeration butterfly valve
OwnerDavid E. Siskinventor
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OwnerDavid E. Siskinventor
Estimating the term…
An aeration butterfly valve including a butterfly disc valve, located within one or more configured valve housings, furnishes a disc valve that rotates about its own axis separate from the axis of rotation of the pivot stems that hold the disc valve in position for manipulation between opening and closure, with respect to the housing in which the disc valve mounts for operation. A ring seal provided within the housing is formed when the housing parts are engaged together, in the assembly of the housing, forcing a portion of the ring seal interiorly, within the housing passage and flow path, and in alignment with the circumferential periphery of the disc valve, to provide for complete sealing closure when the disc valve is pivoted into closure, thereby eliminating the need for the pivot stem and the disc connection to be sealed in their assembly within the aeration butterfly valve.
An aeration butterfly valve for use within an air line for facilitating the unloading of bulk material from a tank trailer or other vehicle, said valve incorporating a housing, said housing has an passage therethrough, a valve disc located within said housing and capable of pivoting between a fully opened position, or into closure, said valve disc having an axis of pivot, upper and lower valve stems provided within the housing, and providing the means for pivoting of the valve disc, the axis of pivot of the valve disc and the axis of pivot of the pivot stems being different and spaced from each other.
Dependencies are inferred from the claim text.