Patents
Patents for F04B 35 - Piston pumpsspecially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for (9,373)
03/1995
03/15/1995CN2191931Y Air pump
03/07/1995US5395218 Fluid pump apparatus
03/01/1995CN2190705Y Self locking adjustable pressure fully automatic inflating pump
02/1995
02/07/1995US5387089 Method and apparatus for compressing gases with a liquid system
01/1995
01/25/1995EP0635640A1 Bearing structure used in a compressor
01/03/1995US5378119 Air compressor having ventilated housing and motor/compressor pulley adjustment
01/03/1995US5378113 Apparatus for compressing gas
12/1994
12/28/1994EP0630515A1 Electromagnetically actuated compressor valve
12/21/1994CN2185813Y Connecting type minisize single-cylinder air pump
12/14/1994CN2185336Y Pressurizing compressor
12/08/1994WO1994028308A1 Compressor
12/08/1994WO1994028307A1 Compressor piston and outlet valve device
12/08/1994WO1994028306A1 Compressor
12/06/1994US5370504 Ambulant reciprocating compressor having plural pressure collection chambers
11/1994
11/23/1994CN2183458Y Inflater with adjustable safety air-valve protector carried-on vehicle
10/1994
10/26/1994CN2180806Y Chain swing rod gearing mechanism for reciprocative pump air compressor
10/25/1994US5357757 Compression-evaporation cooling system having standing wave compressor
10/19/1994EP0620367A1 Linear compressor including reciprocating piston and machined double-helix piston spring
10/18/1994US5355674 Installation for generating utilizable energy from potential energy
10/13/1994WO1994023204A1 Method and apparatus for measuring piston position in a free piston compressor
10/11/1994US5355108 For actuating an external load
10/11/1994US5354185 Dual piston compressor
10/06/1994DE4310152A1 Device for supplying fluid pressure medium
10/05/1994CN2178796Y Electric aerated gun
10/05/1994CN2178795Y Vacuum treating machine
10/04/1994US5352101 Electromagnetically actuated compressor valve
10/04/1994US5352096 Air compressor for automobiles
10/04/1994US5351490 Piston/displacer support means for a cryogenic refrigerator
09/1994
09/15/1994WO1994020755A1 Portable, battery operated air pump
08/1994
08/30/1994US5342176 Method and apparatus for measuring piston position in a free piston compressor
08/17/1994CN2174576Y Large power low-speed displacement pump units
08/03/1994EP0608594A1 Hermetic compressor
07/1994
07/06/1994CN2171017Y Large knife edge revolving type compressor for car
06/1994
06/23/1994WO1994014173A1 Electromagnetically actuated compressor valve
06/08/1994EP0512983B1 Airflow control system pump and housing
06/08/1994CN2168095Y Mini-size electric inflating machine
06/08/1994CN2168094Y Mini-size inflation pump
06/07/1994US5318412 Flexible suspension for an oil free linear motor compressor
06/01/1994CN1087402A Method and apparatus for compression of gas medium
05/1994
05/25/1994CN2166253Y Powerless wind exhauster
05/04/1994EP0594931A1 Hand vacuum pump and heat sealer combination device
05/04/1994CN2163756Y Automatic cycle tyre inflating device
04/1994
04/27/1994CN2163251Y High pressure reciprocating plunger pump prime mover
04/20/1994CN2162545Y Automatic control device of air compressor for vehicle
04/20/1994CN2162544Y Semi-sealed double rotary refrigeation compressor
04/20/1994CN1024293C Closed compression engine
04/13/1994EP0592059A1 Process and system for compressing a gas
04/12/1994CA2030075C Method for assembling rotors without fixtures
04/08/1994CA2107300A1 Method and apparatus for compressing a gaseous medium
03/1994
03/30/1994CN2160025Y Rotary wheel interconnected cylinder IC air compressor
03/23/1994CN1084254A Energy-saving extra-high pressure gas (liquid) delivery device
03/17/1994WO1993024754A3 A gas compressor
03/17/1994DE4239935A1 Refrigeration machine using thermodynamic process - uses magnetic drive for controlling piston displacing working gas through throttle
02/1994
02/23/1994CN1082667A Two function variable pump and motor with rotary stator
02/16/1994CN1082151A Permanent-magnet compressor
02/02/1994CN1081497A Isolation-sealed and semi-sealed type compressor
01/1994
01/25/1994US5281102 Electrohydraulic method and apparatus
01/20/1994DE4223708A1 Electric air pump for domestic use - has pistol shape with battery and motor in butt, compressor in barrel, and adaptor for different uses
01/05/1994CN2152094Y Tractor directly connected air compressor engineering car
01/05/1994CN2152093Y Portable noise-free fish pot pump
01/04/1994US5275542 Free piston-type compressor
01/04/1994US5275537 Magnetic power piston fluid compressor
12/1993
12/29/1993CN2151276Y 微型空气压缩机 Mini air compressor
12/21/1993CA1325414C Portable compressor kit with detachable lamp
12/15/1993CN2149495Y Air-pump using dc or ac electricity
12/09/1993WO1993024754A2 A gas compressor
12/09/1993CA2136716A1 A gas compressor
12/08/1993EP0573144A1 Compressor unloader
12/02/1993CA2095772A1 Compressor unloader
11/1993
11/24/1993CN2147371Y Two-direction electromagnetic vibration refrigeration compressing pump
11/16/1993US5261799 Balanced linear motor compressor
11/03/1993CN1078021A Magnetic copressor and power output apparatus thereof
11/02/1993US5257915 Oil free linear motor compressor
10/1993
10/27/1993EP0566959A1 Magnet compressor and power extracting apparatus making use of the same
10/25/1993CA2093598A1 Magnet compressor and power extracting apparatus making use of the same
10/20/1993CN2144197Y Oilless air compressor
10/13/1993CN1077253A Enclosed compressor with spacing layer
10/12/1993US5252033 Portable car-used oil extracting and tire inflation apparatus
09/1993
09/15/1993CN1022126C Sealed compressor driven by electric-motor
08/1993
08/25/1993EP0556958A1 Air compressor arrangements
08/04/1993EP0553818A1 Piston/displacer support means for a cryogenic refrigerator
07/1993
07/27/1993US5230616 Rotary compressor with shaft balancers
07/14/1993CN1074275A Magnetically reciprocating compressor
07/13/1993US5226294 Compressor arrangement suitable for transport refrigeration systems
07/01/1993DE4142993A1 Electric motor driving radial force loads, e.g. pumps and compressors - has disk-shaped vibration absorber inserted on rotor shaft at back side of motor case
06/1993
06/30/1993EP0548147A1 Installation for generating utilizable energy from potential energy.
06/30/1993CN2137294Y Wind driven water pump
06/29/1993US5222878 Electromagnetic reciprocating pump
06/29/1993US5222877 Motor-compressor unit
06/01/1993US5215447 Mini-type air compressor
06/01/1993US5215445 Handy vacuum pump and heat sealer combination device
05/1993
05/26/1993CN2134508Y Self-controlled air compressor
05/26/1993CN2134507Y 脉冲电风扇 Pulse fans
05/26/1993CN2134506Y Electric aerator
04/1993
04/07/1993CN1070719A Hermetic motor compressor
03/1993
03/23/1993US5195427 Suction device to create a vacuum in containers
03/23/1993CA1314719C Linear drive motor with improved dynamic absorber
03/09/1993US5192197 Piezoelectric pump
03/04/1993DE4129018A1 Electromagnetically driven pump esp. for vehicular air compressor - is operated by periodically varying current in coils co-operating with permanently magnetised annular sections of casing
02/1993
02/09/1993US5184941 Mounting support for motor-pump unit
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