Straight-way valve
Patent 4549579 Issued on October 29, 1985. Estimated Expiration Date: 
June 22, 2004. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
June 22, 2004. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 986284 1738135 3405734 InventorAssigneeApplicationNo. 06/623643 filed on 06/22/1984US Classes:137/625.21, Rotary valve137/625.31, Rotary251/180, Rotary valve251/208RotaryExaminersPrimary: Rosenthal, ArnoldAttorney, Agent or FirmInternational ClassesF16K 3/08 (20060101)F16K 3/02 (20060101) AbstractA straight-way valve assembly is provided with regulating elements in the form of discs, of which one is rotatably-mounted and includes flow ports, which correspond to flow ports of the other static discs, which static discs are arranged on opposite faces of the rotatable disc to form a mechanical, fluid tight seal, whereby the face of the rotatable disc directed away from the supply line includes one or several recesses that are in fluid communication with valve vent means when the valve is in its closed position; the recesses extending radially outwards across the surfaces of the rotatable disc. | |
