Patents Assigned to Fluid Device Corporation
  • Patent number: 4211249
    Abstract: A liquid level control system is disclosed for use with a swimming pool or the like having a pool reservoir, a main drain or outlet, usually at the bottom of the reservoir, and an outlet located at a predetermined water maintenance level for the pool. The system includes fluid amplifier means positioned relative to the pool reservoir for sensing an interface between liquid and gas, or water and air, at the surface of the water in the pool and developing a fluid pressure signal when the interface falls below a predetermined level. Liquid circulation means, including a skimmer at the surface of the water in the pool reservoir is provided for circulating water from the pool reservoir between the outlet and an inlet. A portion of the water circulated by the circulation means is channeled to the fluid amplifier means for operating the same. Fluid valve means is provided which is responsive to the fluid pressure signal developed by the fluid amplifier means.
    Type: Grant
    Filed: September 7, 1978
    Date of Patent: July 8, 1980
    Assignee: Fluid Device Corporation
    Inventor: George B. Richards
  • Patent number: 4148334
    Abstract: A flow regulator is disclosed for controlling liquid flow, for example, from a supply source to a receiving tank according to the liquid level in the tank. Specifically, a fluid interaction device communicating with the receiving tank causes a fluid pressure signal to be developed in response to departure of the liquid in the tank from a predetermined level. A differential pressure responsive valve adjusts liquid flow from the supply source to the receiving tank in response to the fluid pressure signal. Several embodiments and other features including a bypass for enhancing stable flow and a preferred valve structure are disclosed.A beverage dispensing system incorporating the aforesaid flow regulator is also disclosed. A cold carbonated liquid is continually circulated past dispensers from a pressurized chill tank having a carbon dioxide atmosphere. The flow regulator admits further liquid to the system from a supply source whenever liquid is tapped from the system by the dispensers.
    Type: Grant
    Filed: February 3, 1977
    Date of Patent: April 10, 1979
    Assignee: Fluid Device Corporation
    Inventor: George B. Richards
  • Patent number: 4028441
    Abstract: A flow regulator is disclosed for controlling liquid flow, for example, from a supply source to a receiving tank according to the liquid level in the tank. Specifically, a fluid interaction device communicating with the receiving tank causes a fluid pressure signal to be developed in response to departure of the liquid in the tank from a predetermined level. A differential pressure responsive valve adjusts liquid flow from the supply source to the receiving tank in response to the fluid pressure signal. Several embodiments and other features including a bypass for enhancing stable flow and a preferred valve structure are disclosed.A beverage dispensing system incorporating the aforesaid flow regulator is also disclosed. A cold carbonated liquid is continually circulated past dispensers from a pressurized chill tank having a carbon dioxide atmosphere. The flow regulator admits further liquid to the system from a supply source whenever liquid is tapped from the system by the dispensers.
    Type: Grant
    Filed: September 5, 1975
    Date of Patent: June 7, 1977
    Assignee: Fluid Device Corporation
    Inventor: George B. Richards