US3347215A - Free piston engines - Google Patents

Free piston engines Download PDF

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Publication number
US3347215A
US3347215A US3347215DA US3347215A US 3347215 A US3347215 A US 3347215A US 3347215D A US3347215D A US 3347215DA US 3347215 A US3347215 A US 3347215A
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United States
Prior art keywords
motor
compressor
cylinder
piston
double acting
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
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English (en)
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Publication of US3347215A publication Critical patent/US3347215A/en
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Application status is Expired - Lifetime legal-status Critical

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B71/00—Free-piston engines; Engines without rotary main shaft
    • F02B71/02—Starting
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B75/00—Other engines
    • F02B75/02—Engines characterised by their cycles, e.g. six-stroke
    • F02B2075/022—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle
    • F02B2075/025—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle two
US3347215D Free piston engines Expired - Lifetime US3347215A (en)

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US3347215A true US3347215A (en) 1967-10-17

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US3347215D Expired - Lifetime US3347215A (en) Free piston engines

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Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3501087A (en) * 1967-05-24 1970-03-17 Henry Benaroya Tandem,free-piston machines
US4403577A (en) * 1979-06-20 1983-09-13 Henry Benaroya Free piston internal combustion engines
US4678407A (en) * 1979-06-25 1987-07-07 Henry Benaroya Multi-tandem free piston machine
WO1989003475A1 (en) * 1987-10-13 1989-04-20 Hammett Robert B Momentum engine
US4831972A (en) * 1988-05-04 1989-05-23 Barnwell Edward A Internal combustion engine
US4924956A (en) * 1986-10-24 1990-05-15 Rdg Inventions Corporation Free-piston engine without compressor
US5636967A (en) * 1995-09-22 1997-06-10 Green; David C. Board handling apparatus
US6349682B1 (en) * 2000-02-09 2002-02-26 Richard C. Alexius Free piston engine and self-actuated fuel injector therefor
WO2003078810A1 (en) * 2002-03-15 2003-09-25 Advanced Propulsion Technologies, Inc. Engine with power generating capability
US20050257759A1 (en) * 2002-11-20 2005-11-24 Fev Motorentechnik Gmbh Two-stroke internal combustion engine with free opposed pistons
US20060124084A1 (en) * 2003-06-25 2006-06-15 Advanced Propulsion Technologies Inc. Internal combustion engine
US20060138777A1 (en) * 2003-06-25 2006-06-29 Peter Hofbauer Ring generator
US8127544B2 (en) * 2010-11-03 2012-03-06 Paul Albert Schwiesow Two-stroke HCCI compound free-piston/gas-turbine engine

Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3501087A (en) * 1967-05-24 1970-03-17 Henry Benaroya Tandem,free-piston machines
US4403577A (en) * 1979-06-20 1983-09-13 Henry Benaroya Free piston internal combustion engines
US4678407A (en) * 1979-06-25 1987-07-07 Henry Benaroya Multi-tandem free piston machine
US4924956A (en) * 1986-10-24 1990-05-15 Rdg Inventions Corporation Free-piston engine without compressor
WO1989003475A1 (en) * 1987-10-13 1989-04-20 Hammett Robert B Momentum engine
US4831972A (en) * 1988-05-04 1989-05-23 Barnwell Edward A Internal combustion engine
US5636967A (en) * 1995-09-22 1997-06-10 Green; David C. Board handling apparatus
US6349682B1 (en) * 2000-02-09 2002-02-26 Richard C. Alexius Free piston engine and self-actuated fuel injector therefor
US7207299B2 (en) 2002-03-15 2007-04-24 Advanced Propulsion Technologies, Inc. Internal combustion engine
US20050103287A1 (en) * 2002-03-15 2005-05-19 Peter Hofbauer Internal combustion engine
US20060201456A1 (en) * 2002-03-15 2006-09-14 Advanced Propulsion Technologies, Inc. Internal combustion engine
WO2003078810A1 (en) * 2002-03-15 2003-09-25 Advanced Propulsion Technologies, Inc. Engine with power generating capability
US7383796B2 (en) 2002-03-15 2008-06-10 Advanced Propulsion Technologies, Inc. Internal combustion engine
US7255070B2 (en) 2002-03-15 2007-08-14 Advanced Propulsion Technologies, Inc. Internal combustion engine
US20060213466A1 (en) * 2002-03-15 2006-09-28 Advanced Propulsion Technologies, Inc. Internal combustion engine
US20050257759A1 (en) * 2002-11-20 2005-11-24 Fev Motorentechnik Gmbh Two-stroke internal combustion engine with free opposed pistons
US7047916B2 (en) * 2002-11-20 2006-05-23 Fev Motorentechnik Gmbh Two-stroke internal combustion engine with free opposed pistons
US20060138777A1 (en) * 2003-06-25 2006-06-29 Peter Hofbauer Ring generator
US20060124084A1 (en) * 2003-06-25 2006-06-15 Advanced Propulsion Technologies Inc. Internal combustion engine
US7469664B2 (en) 2003-06-25 2008-12-30 Advanced Propulsion Technologies, Inc. Internal combustion engine
US7728446B2 (en) 2003-06-25 2010-06-01 Advanced Propulsion Technologies, Inc. Ring generator
US8127544B2 (en) * 2010-11-03 2012-03-06 Paul Albert Schwiesow Two-stroke HCCI compound free-piston/gas-turbine engine

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