Micro-processor control of compression ratio at full load in a helical screw rotary compressor responsive to compressor drive motor current
Simplified unloader indicator for helical screw rotary compressor
Control means for gas compressor having dual slide valves Patent #: 4610613
ApplicationNo. 07/092827 filed on 09/03/1987
US Classes:417/310, Rotary expansible chamber pump411/282, Defining a smooth curving, noncircular thread section (e.g., elliptically shaped)62/131Position or extent of motion of movable element
ExaminersPrimary: Freeh, William L.
Attorney, Agent or Firm
International ClassesH02K 7/06 (20060101)
H02K 49/00 (20060101)
H02K 49/10 (20060101)
AbstractMovement in a pressurized environment is transmitted to a non-pressurized environment by means of a strong magnetic coupling whereby linear movement of a magnet in a pressurized environment causes linear movement of a surrounding magnet which is in a non-pressurized environment. Because of the strong magnetic coupling, the surrounding magnet is used to drive a linear to rotary motion converter. In the preferred embodiment, the pressurized environment is within a screw compressor.