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 28 - Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids
Patents for F04C 28 - Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids (4,928)
11/1985
11/27/1985EP0162434A2 Antisuckback device for rotary piston pumps
11/27/1985EP0162222A2 Compressor inlet control device
11/27/1985EP0162157A1 A screw compressor incorporating a slide valve
11/19/1985US4553911 Method of coding the oil in screw compressors equipped with automatic variable volume ratio
11/19/1985US4553906 Positive displacement rotary compressors
11/12/1985CA1196615A1 Gerotor vacuum pump
11/05/1985US4551069 Integral oil pressure sensor
10/1985
10/29/1985US4549856 Compressor control system
10/29/1985CA1196074A1 Compressor drive system
10/29/1985CA1195964A1 Compressor
10/22/1985US4548549 Micro-processor control of compression ratio at full load in a helical screw rotary compressor responsive to compressor drive motor current
10/08/1985US4545747 Scroll-type compressor
10/01/1985US4544337 Rotary compressor with two or more suction parts
10/01/1985US4544333 Capability control apparatus for a compressor
09/1985
09/24/1985US4543049 Vane compressor with means for obtaining sufficient back pressure upon vanes at the start of compressor
09/03/1985US4538421 Refrigerating system
08/1985
08/20/1985US4536141 Rotary vane compressor with suction passage changing in two steps
08/20/1985US4536130 Simplified unloader indicator for helical screw rotary compressor
08/13/1985US4534719 Volumetric screw-and-pinion machine and a method for using the same
07/1985
07/30/1985US4531378 Automotive refrigeration system
07/10/1985EP0148069A2 Vacuum pump installations supplied by a cooling liquid under constant pressure
07/09/1985CA1190198A1 Compressor
06/1985
06/26/1985EP0145841A2 Torque control apparatus for enclosed compressors
06/19/1985EP0144790A2 Compressor
06/12/1985EP0144169A2 Scroll type compressor with displacement adjusting mechanism
06/11/1985US4522573 Variable delivery vane compressor
06/11/1985US4522568 Compressor apparatus
06/11/1985US4522038 Refrigerating cycle apparatus
06/05/1985EP0143526A2 Scroll compressor
06/04/1985CA1188279A1 Compressor
05/1985
05/29/1985EP0142945A2 A device for controlling the volumetric capacity of a screw compressor
05/29/1985EP0142926A2 Positive displacement rotary compressors
05/28/1985US4519755 For evacuating gases from a container
05/28/1985US4519748 Micro-processor control of compression ratio at full load in a helical screw rotary compressor responsive to compressor drive motor current
05/14/1985US4516920 Variable capacity vane compressor capable of controlling back pressure acting upon vanes
05/14/1985US4516919 Capacity control of rotary vane apparatus
05/14/1985US4516914 Micro-processor control of moveable slide stop and a moveable slide valve in a helical screw rotary compressor
05/07/1985US4515540 Variable liquid refrigerant injection port locator for screw compressor equipped with automatic variable volume ratio
05/07/1985US4515515 Compressor servomechanical regulator
04/1985
04/30/1985US4514150 Scroll type compressor with displacement adjusting mechanism
04/24/1985EP0138182A2 Liquid ring pump
04/23/1985US4512728 Combined rotary pump and compressor unit
04/09/1985US4509905 Compressor with extended area between suction port and suction groove
04/02/1985US4508491 Modular unload slide valve control assembly for a helical screw rotary compressor
04/02/1985US4508089 Method of regulating the charge of combustion gas delivered to an internal combustion engine
03/1985
03/20/1985EP0134638A1 Helical screw rotary compressor for air conditioning system
03/19/1985US4505653 Capacity control for rotary vane compressor
03/19/1985US4505651 Scroll type compressor with displacement adjusting mechanism
03/05/1985US4502853 Rotational speed sensor for vane compressors
03/05/1985US4502850 Rotary compressor
03/05/1985US4502833 Monitoring system for screw compressor
03/05/1985CA1183504A1 Sliding vane type rotary compressor
03/05/1985CA1183502A1 Unloading control system for helical screw compressor refrigeration system
02/1985
02/12/1985US4498849 Valve arrangement for capacity control of screw compressors
02/05/1985US4497615 Scroll-type machine
01/1985
01/29/1985US4496296 Device for pressing orbiting scroll member in scroll type fluid machine
01/22/1985US4494383 Air-conditioner for an automobile
01/15/1985US4493188 Drive transmission means
01/09/1985EP0130662A2 Compressor control system
01/08/1985US4492540 Variable-displacement vane compressor with one or more ferromagnetic vanes
01/08/1985US4492526 Compressor drive system
12/1984
12/27/1984EP0129004A1 Compressor unit
12/11/1984US4487029 Air conditioning system for a vehicle
12/04/1984US4486158 Rotary vane compressor with suction port adjustment
12/04/1984US4485635 Control device for a compressor in a refrigerating system
12/04/1984US4485634 Control device for air conditioner for automobile
11/1984
11/20/1984US4483667 Vacuum pump and method of operating the same
11/20/1984CA1178256A1 Stepping type unloading system for helical screw rotary compressor
11/20/1984CA1178255A1 Gas compressor of the scroll type having reduced starting torque
11/13/1984US4482007 Air conditioner control apparatus
10/1984
10/23/1984US4478054 Helical screw rotary compressor for air conditioning system having improved oil management
10/09/1984US4475360 Refrigeration system incorporating scroll type compressor
09/1984
09/18/1984US4472119 Capacity control for rotary compressor
09/12/1984EP0118039A1 Positive displacement machine with discharge volume-control
09/11/1984US4470767 Vacuum pump with overload protection valve
09/04/1984CA1173805A1 Compressor
08/1984
08/28/1984US4468178 Scroll type compressor with displacement adjusting mechanism
08/07/1984US4464102 External axis rotary piston compressor
08/07/1984CA1172221A1 Gas compressor of the scroll type having delayed suction closing capacity modulation
07/1984
07/25/1984EP0113786A1 Scroll type compressor with displacement adjusting mechanism
07/17/1984US4459817 Rotary compressor
07/10/1984US4459090 Rotary type compressor for automotive air conditioners
07/03/1984US4457681 Volume ratio control means for axial flow helical screw type compressor
06/1984
06/26/1984US4456435 Scroll type fluid displacement apparatus
06/12/1984US4453900 Valve system for capacity control of screw compressors
06/05/1984US4452571 Multiple cylinder rotary compressor
06/05/1984US4452570 Multiple cylinder rotary compressor
05/1984
05/08/1984US4447196 Rotary vane compressor with valve control of undervane pressure
05/08/1984CA1166933A1 Drive transmission means
05/01/1984US4445344 Reversible refrigeration system rotary compressor
05/01/1984CA1166613A1 Vacuum pump
04/1984
04/10/1984US4441863 Variable discharge rotary compressor
03/1984
03/07/1984EP0101745A1 Rotary compressor
03/06/1984CA1163252A1 Unloading means for a gas compressor
03/01/1984EP0041518A4 Drive transmission means.
02/1984
02/14/1984US4431388 Controlled suction unloading in a scroll compressor
02/14/1984US4431380 Scroll compressor with controlled suction unloading using coupling means
02/14/1984CA1162171A1 Vane type rotary compressor
02/07/1984US4429578 Acoustical defect detection system
02/01/1984EP0099412A1 Compressor
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