Engine-operated generator
Patent 5977667 Issued on November 2, 1999. Estimated Expiration Date: 
July 23, 2018. 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.
July 23, 2018. 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 3259752 Bonnet structure for generator Electric welder Full-covered portable generator Portable engine-generator set Portable generator Soundproof type engine working machine Portable engine-operated electric generator Patent #: 4859886 InventorAssigneeApplicationNo. 121431 filed on 07/23/1998US Classes:310/51, Vibration or noise suppression290/1B, Air-cooled generator310/50, Portable or hand tool310/63, Pressure pump or fan310/89Housings, windows or coversExaminersPrimary: Ramirez, NestorAssistant: Le, Dang Attorney, Agent or FirmForeign Patent References
International ClassesH02K 007/14H02K 005/24 H02K 009/00 H02P 009/04 Foreign Application Priority Data1997-07-24 JPAbstractA compact engine-operated generator unit having a high soundproof effect in which a generator thereof can be cooled efficiently as well as an engine and a muffler thereof. The engine-operated generator has an engine and a generator driven by the engine arranged in a row with a common rotary axis and accommodated in a soundproof case. The generator, the engine and the muffler are arranged in order within the soundproof case and covered by a duct to be isolated from other instruments in the soundproof case; the duct has an end on the side of the generator opening to an interior of the soundproof case and another end on the side of the muffler opening to an exterior of the soundproof case; and a cooling fan is driven by the engine so that air in the soundproof case is inhaled through end opening of the duct on the side of the generator into the duct, sequentially cools the generator, the engine and the muffler in order and then is discharged through the end opening of the duct on the side of the muffler to the exterior.Field of SearchPortable or hand tool (e.g., dry shavers)With other elements Portable or hand tool Vibration or noise suppression Plural units or plural paths Suction pump or fan Pressure pump or fan Dirt, moisture or explosion proof Housings, windows or covers Unitary plant Air-cooled generator COMBINED DEVICES Generating plants | |
