Patents by Inventor Harold L. Cottrell

Harold L. Cottrell has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 5426939
    Abstract: An automatic sensing, measuring, and controlling system for varying the output power of a hydrokinetic device, such as a torque converter, having a varying power input derived from the output of an engine related to the power demand of the engine in an electrical/electronic closed loop circuit arrangement; comprising: circuitry for controlling the output power of the torque converter in response to the demand on the engine in operation, including, sensing and measuring the varying output power of the engine and applying the data measured to a sensor for converting the measured data to an indication representative of the varying output power of the engine; a power computer operable to relate the variable power indication to the load demand of the engine in operation. Control circuitry responsive from the power computer information to vary the output of the torque converter to the load demand of the engine. The power computer further comprising a data information bank.
    Type: Grant
    Filed: June 28, 1993
    Date of Patent: June 27, 1995
    Inventor: Harold L. Cottrell
  • Patent number: 3965680
    Abstract: A hydrokinetic device comprising a fluid containing housing and unique relatively rotatable wheel means, including an impeller wheel connected to an input shaft and a turbine wheel connected to an output shaft. With the addition of a stator wheel the device may provide torque multiplication between the shafts, or without the stator may be used to couple the shafts together. The wheel means is sized and arranged so that in one sequential pair of wheels the entrance edge of one of the wheels is spaced apart from the exit edge of the adjacent wheel a distance generally equal to or greater than the smallest maximum width of one of the wheels, and so that the heads generated by rotation of the wheels are predominantly additive and do not cause potentially destructive negative counter heads opposing the impeller flow. The conical configuration of wheel means with parallel edges especially lends itself to achieving such desired arrangement.
    Type: Grant
    Filed: January 14, 1975
    Date of Patent: June 29, 1976
    Assignee: Power Control, Inc.
    Inventors: Harold L. Cottrell, Anthony C. Mamo