Patents
Sitemap › F02 - Combustion engines; Hot-gas or combustion-product engine plants › F02B - Internal-combustion piston engines; Combustion engines in general › F02B 71 - Free-piston engines; Engines without rotary main shaft
Patents for F02B 71 - Free-piston engines; Engines without rotary main shaft (1,404)
11/1995
11/15/1995EP0681645A1 Method for the cold start of a free-piston engine; and free-piston engine adapted for use of this method.
10/1995
10/31/1995US5461859 Centering system with one way valve for free piston machine
10/19/1995DE4413351A1 Long four stroke internal combustion engine electro generator
10/11/1995EP0676610A1 A free piston machine
09/1995
09/28/1995WO1995026070A1 Fluid bearing with compliant linkage for centering reciprocating bodies
08/1995
08/24/1995DE4405846A1 Combustion engine-generator for motor vehicles
07/1995
07/06/1995DE4344915A1 Linear combustion engine and electro-generator
06/1995
06/27/1995US5426940 Free piston external combustion engine
06/01/1995DE4340462A1 Machine acting as springboard for athletes
05/1995
05/23/1995US5418399 Engine/generator set especially for a motor vehicle
04/1995
04/11/1995US5404983 Turn-act multiaction device
03/1995
03/14/1995US5397922 Integrated thermo-electro engine
12/1994
12/15/1994DE4316055C1 Free-piston engine for producing fluid flow
12/14/1994CN2185328Y 往复式发动机 Reciprocating engines
11/1994
11/17/1994DE4315229A1 Electrical generator, which is used in particular for driving motor vehicles and is driven by an internal combustion engine having freely floating pistons
11/15/1994US5363651 Free piston internal combustion engine
11/10/1994DE4315046A1 Free-piston engine and method for the conversion of energy stored in fuel into electrical energy in a free-piston engine
09/1994
09/29/1994WO1994021891A1 Hydraulic regenerative braking and four wheel drive system
09/14/1994EP0614508A1 Free-piston engine having a fluid energy unit.
09/07/1994EP0613521A1 Free-piston engine having a fluid pressure unit.
08/1994
08/24/1994CN2175309Y Reciprocating motion type internal combustion engine
08/18/1994WO1994018449A1 Method and apparatus for controlling the injection of fuel
08/18/1994WO1994018443A1 Method and apparatus for controlling the injection of fuel into the combustion chamber of an internal combustion engine
08/11/1994DE4303692A1 Free piston exergy internal combustion engine with reduced fuel demand
08/04/1994WO1994017295A1 Method for absorbing the vibration of a free-piston engine and vibration-absorbed fre-piston engine
08/03/1994EP0608385A1 Rear view apparatus.
07/1994
07/12/1994US5327857 Vehicular drive system using stored fluid power for improved efficiency
06/1994
06/28/1994US5323688 Hydraulic regenerative braking and four wheel drive system
06/23/1994DE4340531A1 Paper packaging material
06/23/1994DE4243619A1 Single-acting free-piston engine with dynamic scavenging
06/23/1994DE4243614A1 Dynamic scavenging of a free-piston engine
02/1994
02/22/1994US5287827 Free piston engine control system
01/1994
01/20/1994WO1994001665A1 Engine employing rotating liquid as a piston
01/04/1994US5275542 Free piston-type compressor
12/1993
12/16/1993CA2071291A1 Internal combustion engines with one or two pairs of interconnected pistons
12/15/1993CN2149483Y Multi-pump hydraulic driven piston engine without crankshaft
10/1993
10/07/1993DE4210313A1 Gas turbine plant - has free-piston engine compressor with combustion and compression chambers as input stage to gas turbine
09/1993
09/22/1993EP0560956A1 Oscillating piston motor and installation with an oscillating piston motor.
06/1993
06/23/1993CN2136880Y Free piston engine
06/10/1993WO1993011352A1 Power installation
05/1993
05/27/1993WO1993010345A1 Free-piston engine having a fluid pressure unit
05/27/1993WO1993010344A1 Free-piston engine having a fluid pressure unit
05/27/1993WO1993010343A1 Method of operating a free-piston engine; and free-piston engine operating according to this method
05/27/1993WO1993010342A1 Free-piston engine having a fluid energy unit
05/27/1993WO1993010341A1 Method for the cold start of a free-piston engine; and free-piston engine adapted for use of this method
05/26/1993EP0336955B1 Heat engine
05/25/1993US5213247 Internal combustion powered tool for driving fastening elements
05/06/1993DE4136099A1 Two-stroke free-piston steam engine - generates steam energy in sealed cylinder and uses motion of permanent magnets w.r.t. coils to generate electricity
05/05/1993CN2131989Y Double action free piston-power locomotive crew
04/1993
04/29/1993WO1993008041A1 Rear view apparatus
04/15/1993WO1993007360A1 Oscillating piston motor and installation with an oscillating piston motor
04/01/1993WO1993006349A1 Free piston engine control system
03/1993
03/09/1993US5191861 Internal combustion actuated portable tool
03/04/1993DE4133948A1 Diesel or petrol IC engine incorporating electrical generator/motor - provides electrical energy from piston displacement and uses to displace piston during compression cycle
02/1993
02/17/1993EP0527559A1 Portable tools
01/1993
01/28/1993DE4124394C1 Hydraulic pump with opposed pistons - is used in two=stroke engine and has shut=off valve fitted to compensating cylinders
01/26/1993US5181495 Internal combustion powered device for setting fastening elements
01/21/1993WO1993001393A1 Piston motion control in free piston driver
01/13/1993CA2073587A1 Internal cumbustion actuated portable tool
12/1992
12/01/1992CA1310866C Energy production facility with combustion engine and turbine
10/1992
10/21/1992EP0509660A1 Free piston-type compressor
10/20/1992CA1308920C Supercharged diesel type apparatus for the generation of power
10/15/1992DE4111934A1 Counter-pressure free flow turbine - is used in vehicle or on ship and has immersion tube to ensure sepn. of compressed air and water
10/07/1992CN1065124A Digital control hydraulic transmission free piston internal-combustin engine and its control method
09/1992
09/08/1992US5144917 Free-piston engine
09/03/1992WO1992014915A1 Internal explosion engine
08/1992
08/25/1992US5140905 Stabilizing gas bearing in free piston machines
07/1992
07/14/1992CA1305070C Internal combustion engine, particularly, a free-piston engine
07/08/1992EP0471829A4 Free-piston engine
07/07/1992US5127369 Engine employing rotating liquid as a piston
07/07/1992CA1304690C Power aggregate
07/01/1992EP0493135A1 Internal combustion engines
06/1992
06/23/1992US5123245 Method and apparatus for starting a free piston combustion engine hydraulically
05/1992
05/06/1992CN1060893A Method and apparatus for starting displacer engine hydraulically
04/1992
04/29/1992EP0340214B1 Bounce chambers for multi-cylinder linear engine compressors
04/22/1992EP0481690A2 Method and apparatus for starting a displacer engine hydraulically
04/20/1992CA2053708A1 Method and apparatus for starting a free piston combustion engine hydraulically
04/16/1992DE4032203A1 Portable combustion driven nail driving gun - has two section casing which can be moved axially to change vol. of combustion chamber
04/16/1992DE4032201A1 Portable combustion driven nail driving gun - is safeguard by locking device which prevents ignition of fuel
04/14/1992CA1298737C Pressure actuated movable head for a resonant reciprocating compressor balance chamber
02/1992
02/26/1992EP0471829A1 Free-piston engine
02/20/1992WO1992002730A1 Free-piston engine
02/06/1992DE4024632C1 Opposed piston two=stroke engine - has free pistons with motion controlled by hydraulic system
02/06/1992DE4024591A1 Freikolbenmotor Free-piston engine
01/1992
01/23/1992DE4037234C1 Free-piston IC engine - supplies gas to gas turbine for driving locomotive
01/14/1992US5079924 Circuit for controlling a free-piston engine in particular of a refrigerator compressor
12/1991
12/17/1991CA1293197C Free-piston motor with hydraulic or pneumatic energy transmission
11/1991
11/19/1991CA1292095C Manual recycler for detonating impact tool
10/1991
10/10/1991DE4010517A1 Gas-driven fixing tool - has combustion chamber with discharge port to atmosphere of adjustable cross=section
09/1991
09/19/1991WO1991014087A1 Free-piston engine
08/1991
08/08/1991WO1991011592A1 Piston power machine with optionally incorporated booster system
08/06/1991US5036667 Fluid power engine
07/1991
07/24/1991WO1991011596A1 Unsymmetrical free piston engine
06/1991
06/19/1991CN1012915B Power aggregate
06/13/1991DE3940826A1 Valve system for free-piston IC engine - incorporates inlet and outlet valves within piston
05/1991
05/29/1991EP0429125A2 Circuit for controlling a free-piston engine, in particular of a refrigerator compressor
05/15/1991EP0378656A4 Pressure actuated movable head for a resonant reciprocating compressor balance chamber
04/1991
04/18/1991DE3645103C2 Two-stroke Diesel engine with opposed floating pistons
03/1991
03/13/1991CN1011998B Free-piston motor with hydraulic transmission
02/1991
02/12/1991US4992031 Internal combustion engine driven multiple pump
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