Free Piston Patents

Hot Gas Generator

Year

Linear Alternator

Year

Compressed

Air

Year

Rotary Oscillatory

Year

Rotary

Hydrostatic

Year

E.S.L.Beale

US240830

1946

P.van Blarigan

US6199519

2001

H.Junkers

US1704325

1924

F.Farrokhzad

GB2262695

1993

Krupp

GB894227

1961

F.B.Carder

US2978986

1956

P.Hofbauer

US2005116447

2006

R.P.Pescara

US1657641

1927

B.Parker

GB2356670

2001

Krupp

GB1198378

1970

P.Klotsch

US2916025

1959



R.P.Pescara

US1798697

1927

J.F.Dunne

GB2454360

2008



M.H.Kosoff

FR1343109

1962



H.Janicke

US2265285

1934





H.Benaroya

GB1116162

1968



R.P.Pescara

US1950063

1934









H.Junkers

GB423777

1935









H.Steiner

US2182063

1936









H.Janicke

US2112368

1937









R.P.Pescara

US2101412

1937









R.P.Pescara

US2241957

1939









R.P.Pescara

US2244215

1941









W.Kilchenmann

US2446423

1945









Sulzer Brothers

GB568588

1945









P.F.Stuyvenberg

EP0254353

1988









P.Hofbauer

WO2005116447

2005





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