Free piston pump and miniature internal combustion engine
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United States of America Patent
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Feb 21, 2017
Grant Date -
N/A
app pub date -
Mar 14, 2013
filing date -
Nov 20, 2008
priority date (Note) -
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status (Latency Note)
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Abstract
This invention provides a coil and magnet assembly that is operatively interconnected with an oscillating free piston that moves along an axis. A coil mounting disk is operatively connected to a coil assembly. A magnet assembly is mounted on a magnet base. The magnet assembly is coaxial with respect to the coil assembly. The coil assembly and the magnet assembly are in oscillating motion with respect to each other in conjunction with oscillating motion of the free piston. A spring assembly comprising a plurality springs, symmetrically positioned about the axis, extend between the magnet base and the coil mounting disk, so as to move in conjunction with the oscillating motion along the axis. At least some of the springs are conductive and electrically connect the mounting disk to the magnet base. The piston can reside in a casing that is part of either a two-stroke engine or a fluid pump.
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