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| Number | Title | Issue Date |
| 7171986 | Airflow converger An airflow converger belonging to the field of auto parts, that was developed to improve air supply conditions and performance of internal combustion engines includes: a tubular body equipped at an upper end with an air inlet, having parallel fins that direct airflo... | 02/06/2007 |
| 6830065 | Duct connector apparatus and method The duct connector of the present invention preferably has a rectangular inlet and a round outlet. An intermediate passage is located between the rectangular inlet and the round outlet. Preferably, the intermediate passage provides a smooth transition that is substa... | 12/14/2004 |
| 6548760 | One-piece seamless reducer A seamless reducer formed from a single continuous sheet of material includes a first section including a first wall, a second section including a second wall, and a tapered section including a tapered wall. The tapered wall is connected to and extends be... | 04/15/2003 |
| 6543489 | Unitary reduction duct A unitary annular reduction duct suitable for joining pipes comprising an annular entrance collar of a given diameter, a corrugated and gradually inwardly tapered reduction portion that is contiguous with the collar section and a corrugated and substantia... | 04/08/2003 |
| 6371526 | Quick cone The invention relates to a quick cone (1) for pipe assemblies for conducting fiber suspensions wherein the quick cone provides a transition from a pipe (8) with a greater diameter to a pipe (9) with a smaller diameter as seen in the flow direction of the ... | 04/16/2002 |
| 6102446 | Polygonal flexible metal hose coupling assembly A polygonal flexible metal hose coupling assembly for connecting first and second pipes of a vehicle exhaust system includes a polygonal coupling body. The coupling body is formed by spiral-winding a metal strip with interlocking leading and trailing edge... | 08/15/2000 |
| 5664809 | Connectors A connector assembly principally for aviation fuel lines and pipes in which a connector body is conductive whilst a mounting flange is non-conductive. The body and flange are secured together during a moulding stage. The body generally has earthing lugs e... | 09/09/1997 |
| 5505500 | Apparatus for preventing generation of fugitive emissions at a drain site A sleeve member is positioned between an outlet pipe and a drain structure to form a fluid flow passageway isolated from the ambient atmosphere to confine fluid emissions from either the outlet pipe or the drain structure and prevent the fluid emissions f... | 04/09/1996 |
| 5390967 | Flexible vent pipe connector system A connector system for coupling first and second venting devices, at least one of which comprises a flexible vent pipe, includes a venting device connector having first and second ends. A first end of the venting device connector includes an inner vent me... | 02/21/1995 |
| 5095942 | Plastic self-insulating ductwork system The present invention relates to a system of adjustable preformed ductwork for the conveyance of a fluid. The system uses a distribution box which includes an upper portion having a plurality of walls and a bottom plate. The distribution box may act eithe... | 03/17/1992 |
| 4418943 | Duct fitting A duct fitting in which at least one end of the fitting is provided with an attachment structured to cooperate with either the male end or the female end of a duct to be connected therewith. The fitting's attachment includes a ring immobily fixed to the f... | 12/06/1983 |
