Patents Assigned to SEEwater, Inc.
  • Patent number: 8869587
    Abstract: A dewatering system includes a selective calibrating sensor circuit configured to receive sensor readings from an electronic sensor, to determine if the electronic sensor is immersed in water, and to generate a control output signal accordingly. The selective calibrating sensor circuit periodically performs a self-calibration when the electronic sensor is not immersed in water to cancel the effect of potential contaminants deposited on the electronic sensor over its operating life. The selective calibrating sensor circuit inhibits calibration when the electronic sensor is immersed in water.
    Type: Grant
    Filed: February 6, 2012
    Date of Patent: October 28, 2014
    Assignee: SEEwater, Inc.
    Inventor: Robert F. Gibb
  • Patent number: 8760302
    Abstract: A dewatering system includes a selective calibrating sensor circuit configured to receive sensor readings from an electronic sensor, to determine if the electronic sensor is immersed in water, to allow a user to adjust a pump down time in the field, and to generate a control output signal accordingly. The selective calibrating sensor circuit periodically performs a self-calibration when the electronic sensor is not immersed in water to cancel the effect of potential contaminants deposited on the electronic sensor over its operating life. The selective calibrating sensor circuit inhibits calibration when the electronic sensor is immersed in water. In some applications with multiple electronic sensors, the selective calibrating sensor circuit disconnects from one of the electronic sensors before performing the self-calibration. In certain embodiments, a pump control circuit including the selective calibration sensor circuit can be configured to be mounted with a housing of the pump.
    Type: Grant
    Filed: June 24, 2010
    Date of Patent: June 24, 2014
    Assignee: SEEwater, Inc.
    Inventor: Ronald MacDonald
  • Patent number: 8330603
    Abstract: A dewatering system includes a selective calibrating sensor circuit configured to receive sensor readings from an electronic sensor, to determine if the electronic sensor is immersed in water, to allow a user to adjust a pump down time in the field, and to generate a control output signal accordingly. The selective calibrating sensor circuit periodically performs a self-calibration when the electronic sensor is not immersed in water to cancel the effect of potential contaminants deposited on the electronic sensor over its operating life. The selective calibrating sensor circuit inhibits calibration when the electronic sensor is immersed in water. In some applications with multiple electronic sensors, the selective calibrating sensor circuit disconnects from one of the electronic sensors before performing the self-calibration.
    Type: Grant
    Filed: June 26, 2009
    Date of Patent: December 11, 2012
    Assignee: SEEwater, Inc.
    Inventor: Robert F. Gibb
  • Patent number: 8109126
    Abstract: A dewatering system includes a selective calibrating sensor circuit configured to receive sensor readings from an electronic sensor, to determine if the electronic sensor is immersed in water, and to generate a control output signal accordingly. The selective calibrating sensor circuit periodically performs a self-calibration when the electronic sensor is not immersed in water to cancel the effect of potential contaminants deposited on the electronic sensor over its operating life. The selective calibrating sensor circuit inhibits calibration when the electronic sensor is immersed in water.
    Type: Grant
    Filed: October 6, 2008
    Date of Patent: February 7, 2012
    Assignee: SEEwater, Inc.
    Inventor: Robert F. Gibb
  • Patent number: 7972117
    Abstract: A pump control system for a submersible pump is provided. The system includes a pump controller adapted to activate the pump when water has reached a high threshold level and to deactivate the pump when water has dropped to a low threshold level. The pump controller also incorporates one or more sensing devices that are capable of detecting the presence of a non-conductive fluid in water so that the pump can be deactivated if oil is detected in water. The system further includes an auxiliary control device which is adapted to automatically override the pump controller and de-energizes the pump if the pump remains activated when water drops to a level below the low threshold level.
    Type: Grant
    Filed: August 8, 2006
    Date of Patent: July 5, 2011
    Assignee: SEEwater, Inc.
    Inventor: Ronald MacDonald
  • Patent number: 7830268
    Abstract: A high liquid alarm system for use in detecting the presence of water and oil in water present in a confined space is disclosed. In one implementation, the system includes an optical sensor capable of detecting water at a certain level, a sensing device capable of differentiating oil and water, and an alarm indicator. The sensors are in communication with an indicator which is capable of providing alert signals. The optical sensor is configured to activate a second alarm in the indicator when water is detected at about a predetermined level and the sensing device is configured to trigger a first alarm when oil in water is detected at about the predetermined level. The sensors can also be interconnected such that the sensing device is activated upon detection of water by the optical sensor, reducing the power consumption of the system.
    Type: Grant
    Filed: February 13, 2009
    Date of Patent: November 9, 2010
    Assignee: SEEwater, Inc.
    Inventor: Ronald MacDonald
  • Patent number: 7492272
    Abstract: A high liquid alarm system for use in detecting the presence of water and oil in water present in a confined space is disclosed. In one implementation, the system includes an optical sensor capable of detecting water at a certain level, a sensing device capable of differentiating oil and water, and an alarm indicator. The sensors are in communication with an indicator which is capable of providing alert signals. The optical sensor is configured to activate a second alarm in the indicator when water is detected at about a predetermined level and the sensing device is configured to trigger a first alarm when oil in water is detected at about the predetermined level. The sensors can also be interconnected such that the sensing device is activated upon detection of water by the optical sensor, reducing the power consumption of the system.
    Type: Grant
    Filed: January 27, 2006
    Date of Patent: February 17, 2009
    Assignee: SEEwater, Inc.
    Inventor: Ronald MacDonald