Electromagnetic fuel injector with tapered armature/valve
December 24, 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 2881980 3926405 Fuel injection apparatus with wetting action Solenoid structure having a relatively unrestrained generally flat armature member Electromagnetically actuatable valve Magnetically actuated pilot valve Injection valve Electro-magnetic valves particularly for household appliances Electromagnetically actuatable valve Edge discharge pulse fuel injector Patent #: 4515129 InventorsAssigneeApplicationNo. 06/685742 filed on 12/24/1984US Classes:239/124, WITH SYSTEM FLUID RELIEF OR RETURN TO SUPPLY239/132.5, Coolant is spray fluid or is added to spray fluid239/463, Fluid rotation inducing means upstream of outlet239/585.3, Plate-type armature valve (e.g., plate and integral projection or ball)251/129.16Having plate-shaped armatureExaminersPrimary: Kashnikow, AndresAssistant: Davidson, Dan I. Attorney, Agent or FirmInternational ClassesF02M 53/04 (20060101)F02M 51/06 (20060101) F02M 53/00 (20060101) F02M 51/08 (20060101) AbstractAn electromagnetic fuel injector is provided with a tapered armature valve plate operatively positioned by means of a locator so that it is arranged so as to, in effect, pivot from a spring biased position at which it seats against a valve seat associated with a plurality of orifice discharge passages located concentrically about the axis of the injector to a second position adjacent to the working surface of the pole piece means of the associate solenoid. Preferably, the electromagnetic fuel injector is of the bottom feed type whereby it can be supplied with fuel in excess of the amount to be injected, with the flow path of fuel being arranged so that the excess fuel will purge vapors from the injector and cool the solenoid coil therein. | |
