Toilet-seat flush-valve operating device

An operating mechanism in a water closet having a toilet bowl, a cistern, a seat pivotally mounted on said toilet bowl for pivotal movement about a horizontal axis between a generally vertical position and a generally horizontal position and a flush valve for flushing fluid from said cistern to said toilet bowl, said operating mechanism comprising:

• a hydraulic cylinder unit having a piston vertically moveably mounted therein;
• a connecting means for connecting said piston with said seat such that downward movement of said piston in said hydraulic cylinder raises said seat and upward movement of said piston in said hydraulic cylinder lowers said seat;
• a fluid pipeline connected to said hydraulic cylinder unit for providing fluid thereto for moving said piston upward in said hydraulic cylinder;
• and
• a control valve in said fluid pipeline for admitting fluid through said fluid pipeline to move said piston upward in said hydraulic cylinder under fluid pressure to lower said seat onto said toilet bowl and for closing off fluid from said fluid pipeline;
• wherein said connecting means comprises an operating lever mounted on said horizontal axis of said seat and a static weight connected to said operating lever for counterbalancing pivotal movement of said seat.

An operating mechanism in a water closet having a toilet bowl, a cistern, a seat pivotally mounted on said toilet bowl for pivotal movement about a horizontal axis between a generally vertical position and a generally horizontal position and a flush valve for flushing fluid from said cistern to said toilet bowl, said operating mechanism comprising:

• a hydraulic cylinder unit having a piston vertically moveably mounted therein;
• a connecting means for connecting said piston with said seat such that downward movement of said piston in said hydraulic cylinder raises said seat and upward movement of said piston in said hydraulic cylinder lowers said seat;
• a fluid pipeline connected to said hydraulic cylinder unit for providing fluid thereto for moving said piston upward in said hydraulic cylinder;
• and
• a control valve in said fluid pipeline for admitting fluid through said fluid pipeline to move said piston upward in said hydraulic cylinder under fluid pressure to lower said seat onto said toilet bowl and for closing off fluid from said fluid pipeline;
• and
• a flush-valve opening means for opening said flush valve upon downward movement of said piston means in said hydraulic cylinder, said flush valve opening means comprising a suspension cord having one end connected to said piston means, a plurality of guide pulleys upon which said suspension cord is guided, the other end of said suspension cord being suspended above said flush valve, a static weight connected to said other end of said suspension cord, a magnet on the upper side of said flush valve for attracting said static weight, and a stop lever on said flush valve on a portion thereof opposite said magnet for stopping opening movement of said flush valve.

A toilet-seat flush-valve operating device in a water closet having a toilet bowl, a cistern, a toilet seat pivotally mounted on said toilet bowl for pivotal movement about a horizontal axis between a generally vertical position and a generally horizontal position and a flush valve for flushing fluid from said cistern to said toilet bowl, said toilet-seat flush-valve operating device comprising:

• a hydraulic cylinder unit having a piston means for moving under a working fluid pressure and storing potential energy in said hydraulic cylinder unit, said piston means comprising a piston moveably mounted in said hydraulic cylinder;
• a toilet-seat operating lever unit connected to said toilet seat for pivotal movement thereof about the horizontal axis;
• a connecting means for connecting said piston means with said toilet-seat operating lever unit for pivotal movement of said toilet seat in response to movement of said piston means in said hydraulic cylinder unit;
• a flush-valve opening means for opening said flush valve to flush fluid from said cistern to said toilet bowl in response to movement of said piston means in said hydraulic cylinder unit, said flush-valve opening means comprising a cord having one end connected to said piston means, with the other end having a means for engaging said flush-valve;
• a fluid pipeline having one end connected to a working fluid supply and the other end to said hydraulic cylinder unit for supplying working fluid thereto for moving said piston means in said hydraulic cylinder unit;
• and
• a control valve in said fluid pipeline for supplying and cutting off the working fluid to said hydraulic cylinder unit, whereby opening of said control valve causes working fluid to be supplied to said hydraulic cylinder unit to move said piston means in said hydraulic cylinder unit, lower said toilet-seat under its own weight through said connecting means and said toilet-seat operating lever unit, store potential energy from the lowering of said toilet-seat and the working fluid, and cause said means for engaging of said cord to engage said flush-valve, and whereby closing of said control valve causes working fluid to be cut-off from said hydraulic cylinder unit and said piston means to move under the force of the stored potential energy so that said toilet-seat is raised by said connecting means and said toilet-seat operating lever unit and said flush-valve is opened by said cord having said means for engaging said flush-valve.