Pipe fitting reducers
Patent 5183298 Issued on February 2, 1993. Estimated Expiration Date: 
April 24, 2011. 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.
April 24, 2011. 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 Re20782 D135689 774633 1128080 1801171 2857576 3272538 Heat-expandable multi-passage pipe having parts for intended breakage Reducing coupling Patent #: 4648631 InventorApplicationNo. 690268 filed on 04/24/1991US Classes:285/12, CONVERTIBLE285/133.3, Having a pipe-receiving bell, socket or mouth285/420, CLAMP285/422MATERIALSExaminersPrimary: Arola, Dave W.Attorney, Agent or FirmForeign Patent References
International ClassF16L 025/00AbstractCast iron fittings are coupled with reducer fittings in a fluid handling network to reduce the flow diameter in various pipe sections of the network. Each main fitting and reducer fitting has two or more tabs about their mating open ends which are aligned and connected one to the other to maintain the fittings coupled together. Reducer fittings having standard size, large diameter ends, are provided with variously sized smaller diameter ends to selectively reduce the flow. The reducer fittings are straight-through sections useful with main fittings of various types, including Tees, elbows, right-angle bends and the like. | |
