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Class Information
Number: 123/228
Name: Internal-combustion engines > Rotary > With transfer means intermediate single compression volume means and single expansion volume means > Compression volume means circumferentially disposed relative to expansion volume means
Description: Apparatus wherein the means to pressurize the combustible material is distally located from the means to receive the combusted material on a closed curvilinear boundary about the axis of rotation of the piston structure.










Sub-classes under this class:

Class Number Class Name Patents
123/230 Compression volume is also expansion volume 11
123/232 Interengaging rotors 37
123/229 Transfer means in rotor 39
123/231 Vane 31


Patents under this class:
1 2

Patent Number Title Of Patent Date Issued
8667950 Oil-less rotary engine Mar. 11, 2014
8662051 Rotary engine Mar. 4, 2014
8607762 Inverse displacement asymmetric rotary (IDAR) engine Dec. 17, 2013
8316817 Rotary piston engine Nov. 27, 2012
8297252 Rotary one cycle internal combustion engine Oct. 30, 2012
8225767 Positive displacement rotary system Jul. 24, 2012
8220435 Rotary piston engine and method for designing the same Jul. 17, 2012
8151759 Orbital engine Apr. 10, 2012
7793516 Rotary compressor with fluidic passages in rotor Sep. 14, 2010
7793635 Rotary piston type internal combustion engine Sep. 14, 2010
7621255 Toroidal engine method and apparatus Nov. 24, 2009
7621253 Internal turbine-like toroidal combustion engine Nov. 24, 2009
7421982 Independent combustion chamber-type internal combustion engine Sep. 9, 2008
7398757 Toroidal engine method and apparatus Jul. 15, 2008
7341041 Toroidal engine with variable displacement volume Mar. 11, 2008
7308884 Rotary engine Dec. 18, 2007
7305963 Blade-thru-slot combustion engine, compressor, pump and motor Dec. 11, 2007
7185625 Rotary piston power system Mar. 6, 2007
7100566 Operating method for a rotary engine and a rotary internal combustion engine Sep. 5, 2006
6758188 Continuous torque inverse displacement asymmetric rotary engine Jul. 6, 2004
6684825 Rotary machine and thermal cycle Feb. 3, 2004
6606973 Rotary engine Aug. 19, 2003
6543406 Rotary piston combustion engine Apr. 8, 2003
6539913 Rotary internal combustion engine Apr. 1, 2003
6530357 Rotary internal combustion engine Mar. 11, 2003
6298821 Bolonkin rotary engine Oct. 9, 2001
6276329 Rotary machine Aug. 21, 2001
6065874 Linear bearing May. 23, 2000
6062188 Rotary piston type internal combustion engine May. 16, 2000
5755197 Rotary engine May. 26, 1998
5579733 Rotary engine with abutments Dec. 3, 1996
5251594 Nutating internal combustion engine Oct. 12, 1993
5138993 Rotary wavy motion type engine Aug. 18, 1992
4967707 Rotary engine Nov. 6, 1990
4895117 Internal combustion engine Jan. 23, 1990
4760701 External combustion rotary engine Aug. 2, 1988
4683852 Internal combustion engine having rotating pistons Aug. 4, 1987
4423710 High compression rotary engine Jan. 3, 1984
4399654 Power plant having a free piston combustion member Aug. 23, 1983
4342295 Rotary internal combustion engine Aug. 3, 1982
4342297 Rotary internal combustion engine Aug. 3, 1982
4342296 Rotary internal combustion engine Aug. 3, 1982
4337741 Rotary internal combustion engine Jul. 6, 1982
4311121 Rotary device Jan. 19, 1982
4286555 Rotary internal combustion engine Sep. 1, 1981
4200084 Rotary piston engine Apr. 29, 1980
4096846 Rotary fluid pressure engine Jun. 27, 1978
4086881 Rotary engine May. 2, 1978
4075981 Rotary internal combustion engine Feb. 28, 1978
4040391 Rotary piston internal combustion engine of trochoidal construction Aug. 9, 1977

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