Patents
Sitemap › F04 - Positive-displacement machines for liquids; Pumps for liquids or elastic fluids › F04C - Rotary-piston, or oscillating-piston, positive-displacement machines for liquids; Rotary-piston, or oscillating-piston, positive-displacement pumps › F04C 29 - Component parts, details, or accessories, of pumps or pumping installations specially adapted for elastic fluids, not provided for in groups
Patents for F04C 29 - Component parts, details, or accessories, of pumps or pumping installations specially adapted for elastic fluids, not provided for in groups (16,981)
11/1999
11/17/1999CN1235245A Scroll-type compressor
11/17/1999CN1235243A Hermetic rotary compressor with resonance chamber
11/16/1999US5984647 Process for producing a hermetic electric compressor
11/11/1999WO1999057439A1 Vacuum pump
11/11/1999WO1999057419A1 Rotating piston machine with three-blade rotors
11/11/1999DE19820523A1 Spindle screw pump assembly for dry compression of gases
11/11/1999DE19819538A1 Druck-Saug-Pumpe Pressure-suction pump
11/10/1999CN2348155Y Self-priming device for water pump
11/10/1999CN2348154Y Direct-connecting electric motor and hydraulic pump driving improved structure
11/10/1999CN2348153Y Shock-absorbing device for rotary compressor
11/10/1999CN1234492A Air conditioner adopting volute compressor
11/04/1999WO1999047813A3 Scroll-type fluid displacement apparatus including an eccentric crank mechanism having an elongated shaft
11/04/1999DE19806346A1 Cooling and shaft sealing device for compressor
11/03/1999CN2346965Y High-pressure reflux
11/02/1999US5975860 Vibration torsion system damper for a shaft of a compressor
10/1999
10/27/1999EP0952308A1 Liquid sealed vane oscillator
10/27/1999EP0834017B1 Vacuum pump
10/27/1999EP0687816B1 Oscillating type rotary compressor
10/27/1999CN2345743Y Sound-proof noise-reduction cover for refrigeration compression condensation unit
10/27/1999CN1232927A Slidable discharge valve in hermetic rotary compressor
10/22/1999CA2269139A1 Liquid-sealed vane oscillator
10/21/1999WO1999053220A1 Belt driven fluid compressor with self-adjusting belt tensioning device
10/21/1999DE19817351A1 Screw spindle vacuum pump with gas cooling
10/19/1999US5966949 Refrigerant of hydrofluorocarbon system not containing chlorine, ester compound oil phosphoric acid triester
10/19/1999CA2153428C Rotor counterweight insert apparatus and method for making same
10/14/1999DE19912482A1 Fluid pump or compressor with impeller-type drive
10/13/1999EP0949465A2 Compressor for refrigeration cycle
10/13/1999EP0949420A1 Screw compressor
10/07/1999WO1999050561A1 Vacuum pump
10/07/1999DE19814645A1 Multistage compression string for isothermal compression of gases in rotary-piston engine
10/06/1999CN2342136Y Silencer for fan
10/06/1999CN1231022A Seal structure for casing
10/06/1999CN1045486C Sealed electric compressor with two cylinders
10/05/1999US5961306 Rotating scroll compressor having main and auxiliary rotating shaft portions
10/05/1999US5961302 Liquid-sealed vane oscillator
10/05/1999US5960824 Scroll compressor having contoured fixed rotation suction control valve
09/1999
09/30/1999WO1999049221A1 Liquid ring pump
09/30/1999WO1999049220A1 Dry vacuum pump
09/30/1999WO1999049219A1 Screw rotor type wet vacuum pump
09/30/1999WO1999049218A1 Discharge silencer provided with drain recovering function
09/30/1999WO1999049217A1 Screw rotor for vacuum pumps
09/30/1999DE19812976A1 Flüssigkeitsringverdichter Liquid ring compressor
09/30/1999DE19812819A1 Screw compressor with mechanical slide ring shaft seal
09/29/1999EP0945621A1 Liquid ring compressor
09/29/1999CN1229887A Package-type scroll compressor
09/28/1999US5957676 Rotary compressor with water miscible lubricant
09/28/1999US5957664 Gas pulsation dampener for positive displacement blowers and compressors
09/28/1999US5956959 Refrigerant compressor and cooling apparatus comprising the same
09/28/1999CA2182446C Apparatus and method for electronically controlling inlet flow and preventing backflow in a compressor
09/23/1999WO1999047813A2 Scroll-type fluid displacement apparatus including an eccentric crank mechanism having an elongated shaft
09/22/1999EP0943806A1 Displacement type fluid machine
09/21/1999US5954489 Vane type vacuum pump having a pin drive coupling
09/21/1999US5954482 Compressor having pressure eliminating means
09/16/1999WO1999046506A1 Scroll compressor with structure for preventing reverse rotation
09/15/1999EP0942172A1 Vacuum pump with multiple driven shafts
09/15/1999EP0941827A2 Apparatus for on-site production of pumpable mortars
09/15/1999EP0941405A2 Fluid compressor
09/14/1999US5951272 Scroll compressor having an annular seal for a stationary scroll pressure receiving surface
09/14/1999US5951270 Non-contiguous thrust bearing interface for a scroll compressor
09/14/1999US5951269 Scroll compressor having well-balanced rotary elements
09/14/1999US5951268 Sperial vacuum pump having a metal bellows for limiting circular translation movement
09/14/1999US5951266 Evacuating apparatus having interengaging rotors with threads having a decreasing pitch at the exhaust side
09/14/1999US5950452 A refrigerant which does not include chlorine is used as a working fluid to be supplied to and discharged from the inside of cylinder chamber is useful for prevention of deterioration of oil in compressor
09/14/1999CA2127340C Apparatus and method of oil charge loss protection for compressors
09/10/1999WO1999045275A1 Liquid mechanical pump
09/10/1999WO1999045274A1 Scroll compressor with combined pressure ratio and pressure differential relief valve
09/07/1999US5949034 Absorptive silencer for use in a compressor
09/07/1999US5947711 Rotary screw air compressor having a separator and a cooler fan assembly
09/07/1999US5947710 Rotary compressor with reduced lubrication sensitivity
09/07/1999US5947709 Scroll compressor with oiling mechanism
09/02/1999WO1999043958A1 Oil cooler and separator assembly
09/02/1999WO1999043932A1 Compressor muffler
09/02/1999DE19907428A1 Vane wheel compressor for a vehicle air conditioning system
08/1999
08/31/1999US5944501 Roots blower having zigzag meandering grooves in the casing inner wall surface
08/31/1999US5944500 Scroll-type fluid displacement apparatus having a strengthened inner terminal end portion of the spiral element
08/26/1999WO1999042729A1 Vacuum pump
08/26/1999DE19907492A1 Carbon dioxide compressor for air conditioning systems in which narrow oil passages are avoided
08/25/1999EP0937895A2 Screw fluid machine
08/25/1999EP0937894A2 Screw fluid machine and screw gear used in the same
08/24/1999US5941092 Refrigeration unit
08/18/1999EP0936422A2 Apparatus having refrigeration cycle
08/17/1999US5938419 Scroll fluid apparatus having an intermediate seal member with a compressed fluid passage therein
08/17/1999US5938418 Scroll type fluid displacement apparatus with decreased manufacturing cost
08/11/1999EP0934465A1 Rotor provided with shaft pivots
08/11/1999CN1225422A Refrigerant compressor with cooling means
08/11/1999CN1044633C Vortex hydraulic mechanism
08/10/1999US5935297 Pressure vacuum swing adsorption of oxygen from air;adsorption, desorption
08/05/1999WO1999023528A3 Electrochromic system
08/04/1999EP0933532A2 Vane-type fluid machine
08/04/1999EP0933531A1 Scroll compressor
08/03/1999US5931651 Scroll compressor and method for manufacturing an oldham ring therefor
08/03/1999US5931650 Hermetic electric scroll compressor having a lubricating passage in the orbiting scroll
08/03/1999US5931649 Motor compressor
08/03/1999US5931008 Protecting device for car air conditioner
07/1999
07/28/1999EP0931938A1 Vacuum pump with dust collecting function
07/28/1999EP0931936A1 Gerotor motor and improved valve drive and brake assembly therefor
07/28/1999CN2330820Y Non-powered sound-eliminating and -isolating hood for enclosed blower
07/27/1999US5929591 Air conditioner
07/27/1999US5928407 Alternating pressure apparatus for obtaining oxygen from the air and method for the operation thereof
07/27/1999US5927863 Machine with bearing-mounted rotors and liquid-lubricated bearings
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