Patents by Inventor Leonard G. Spelber

Leonard G. Spelber 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).

  • Water powered waste disposer with improved dynamic seal
    Patent number: 4573642
    Abstract: An improved dynamic seal for a water powered waste disposer to increase operating efficiency under low water pressure conditions. The rotatable drive ring within the disposer is sealed between the water powered piston chamber and the waste cutting chamber. This seal comprises a thin band of sheet material secured to the drive ring and provides the desired sealing effect due, in part, to the water pressure in the piston chamber.
    Type: Grant
    Filed: May 7, 1984
    Date of Patent: March 4, 1986
    Assignee: Wastemate Corporation
    Inventor: Leonard G. Spelber
  • Anti-siphon control valve
    Patent number: 4553560
    Abstract: An on/off valve, preferably of the ball type, with an anti-siphon feature. The valve has concentric opposite direction flow with open structured support elements to maintain the inlet tube properly positioned within the elongated housing. A cup-shaped poppet-type float valve prevents fluid from spraying out of air vents upon opening of the ball valve. The control valve is particularly adapted for indoor use.
    Type: Grant
    Filed: June 14, 1983
    Date of Patent: November 19, 1985
    Assignee: Wastemate Corporation
    Inventors: Abraham I. Tucker, Leonard G. Spelber
  • Waste disposer coupling
    Patent number: 4405159
    Abstract: A coupling device for coupling a waste disposer unit to a sink, including a drain conduit with a flange for fitting against the sink and a collar having external threads positioned over the conduit. A locking ring is in threaded engagement with the collar for retaining the drain conduit securely to the sink. A resilient sealing ring is positioned over the bottom of the conduit and the top of the disposer and securing means is placed over the sealing ring to hold the assembly together.
    Type: Grant
    Filed: June 16, 1981
    Date of Patent: September 20, 1983
    Assignee: Wastemate Corporation
    Inventor: Leonard G. Spelber
  • Valve mechanism for a water operated waste disposal unit
    Patent number: 4399947
    Abstract: A valve mechanism for a water actuated waste disposal unit includes a reciprocating control valve for actuating an operating piston with cutters attached thereto. The control valve is cycled by a pilot valve. Passages in the valve mechanism are constructed and arranged for optimum operation and cycle time with minimum leakage.
    Type: Grant
    Filed: October 16, 1981
    Date of Patent: August 23, 1983
    Assignee: Wastemate Corp.
    Inventors: Leonard G. Spelber, Abraham I. Tucker