Flush mounted sea valve
Patent 4304252 Issued on December 8, 1981. Estimated Expiration Date: 
October 22, 1999. 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.
October 22, 1999. 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 2686024 3006602 3022797 3228412 3275025 3528447 3591131 3661355 3698420 Ball valve for valving abrasive fluids Patent #: 3985150 InventorApplicationNo. 06/086752 filed on 10/22/1979US Classes:137/240, With separate material addition137/123, SIPHONS251/144, Tank251/315.1Housing constructionExaminersPrimary: Chambers, A. MichaelAttorney, Agent or FirmInternational ClassesF16K 27/06 (20060101)F16K 5/06 (20060101) AbstractA fluid flow control valve utilizes a ball which is rotated about an axis greater than 0 degrees and less than 90 degrees to the direction of fluid flow. The ball member utilizes a fluid flow conduit through its center with a flat surface disposed at an angle to the fluid flow conduit. When in the closed position, the flat surface is disposed flush with a valve face on one port of the valve. The ball is also disposed so that its center is less than a radius length from the surface defined by the valve face. | |
