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| Number | Title | Issue Date |
| 7104276 | Valve with reversible valve seat for high-pressure pump (HP) High-pressure valve for high-pressure pump, which has a valve body with inlet and outlet, the cylinder chamber of the pump piston rod being connected to the said valve body. The inlet communicates with the cylinder chamber via a bore which houses a first valve seat ... | 09/12/2006 |
| 7077955 | Joint used in one of a water inlet or water outlet of a filter cylinder or a filter casing A joint used in one of a water inlet or water outlet of a filter cylinder, or a water inlet or a water outlet of a filter casing is disclosed. The joint is a round cylindrical tube and comprises at least one first waterproof washer installed near one end of the roun... | 07/18/2006 |
| 7040669 | Fuel feeding pipe A fuel feeding pipe having a first feed oil pipe extending from an oil filler port, a second feed oil pipe projecting from a fuel tank, and a tightening belt for connecting and tightening these oil pipes together, comprising an outer fitting pipe provided to the fir... | 05/09/2006 |
| 5174327 | In-line check valve An in-line check valve includes a housing defining a cavity with an inlet and an outlet, a removable seat attachable to the inlet, a piston movably positioned in the housing and including a seal that operably engages the seat, and a spring positioned arou... | 12/29/1992 |
| 4953622 | Subterranean well casing float tool A subterranean well casing float tool has a tubular metal housing which is securable to well casing conduit. A valve is carried within the housing and comprises a frame with a valve head and seat carried relative to the frame and biased toward closed posi... | 09/04/1990 |
| 4872510 | Subterranean well casing float tool A subterranean well casing float tool is comprised of a tubular metal housing which is securable to a well casing conduit. Varing means are implaced within the housing, with substantially all of the components of the valving means, save a biasing means, a... | 10/10/1989 |
| 4712619 | Poppet valve The improved poppet valve of the present invention comprises a simpler and shorter valve which meets or exceeds prior art performance characteristics while being easier and cheaper to make and to fabricate into a float collar or float shoe. The improved p... | 12/15/1987 |
