The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 15, 2004
Filed:
Jun. 21, 2002
Anders Malmquist, Täby, SE;
Lars Gertmar, Västerås, SE;
Harry Frank, Västerås, SE;
Chandur Sadarangani, Västerås, SE;
ABB AB, Vasteras, SE;
Abstract
A device that includes a combustion engine with a piston that is mechanically freely movable in a housing. The device permits combustion of a fuel mixture to produce a pushing force to the piston. The device includes an electromagnetic energy transducer and an external current circuit, which is connected to the energy transducer for exchange of effect in a direction to or from the energy transducer. A control unit controls the direction of the effect, which is exchanged between the energy transducer and the external current circuit, during operation of the device. Such a device can be used to generate electrical energy, and can be employed in a vehicle.