Dual flush apparatus
OwnerFeiyu Liinventor
Life of this patent
Estimating the term…
Abstract
A dual flush toilet and dual flush apparatus for a toilet having a discharge port for flushing water into a toilet bowl includes a buoyant flush valve for releasably sealing a discharge port and having a cavity for trapping air to cause a flush valve to remain open after unsealing of the flush valve from the discharge port. The flush valve has a weight for causing seating of the flush valve on the discharge port after flush the water through the discharge port. A control mechanism monitor the water tank is provided for controlling buoyancy of the flush valve by releasing entrapped air to effect either a full flush or partial flush of water from the water tank through the toilet bowl.
Claims19
Dual flush apparatus for a toilet having a water tank with a discharge port for flushing water into a toilet bowl, the apparatus comprising:
- a buoyant flush valve for releasably sealing said discharge port and having a cavity for entrapping air to cause the flush valve to remain open after unseating of the flush valve from said discharge port, the flush valve having a weight for causing seating of the flush valve on said discharge port after flushing of water through said discharge port;
- and
- a control mechanism configured for mounting to said water tank, said control mechanism comprising:
- a handle;
- lever means, interconnecting said handle and the flush valve, for unseating the flush valve from said discharge port;
- and
- an air valve, connected to said handle and pneumatically connected to the flush valve, for venting entrapped air in the flush valve cavity at a selected water level within said water tank, said air valve comprising:
- a body having an inlet and an outlet;
- a rotor disposed within said body and including a slot therein for pneumatically connecting the inlet and the outlet upon rotation of said rotor;
- and
- a rotor driver for rotating the rotor in order to alternatively align the slot over the inlet and outlet to provide the pneumatic connection and not align the slot over the inlet and outlet to prevent pneumatic connection.
A dual flush toilet comprising:
- a toilet bowl;
- a water tank with a discharge port for flushing water into said toilet bowl;
- a water valve assembly, including a float, for filling said water tank to a full flush level;
- a buoyant flush valve for releasably sealing said discharge port and having a cavity for entrapping air to cause the flush valve to remain open after unseating of the flush valve from said discharge port, the flush valve having a weight for causing sealing of the flush valve on said discharge port after flushing of water through said directing port;
- and
- a control mechanism mounted to said water tank, said controlled mounting comprising:
- a handle;
- lever means, interconnecting said handle and the flush valve, for unseating the flush valve from said discharge port;
- and
- an air valve connected to said handle and pneumatically connected to the flush valve, for venting entrapped air in the flush valve cavity at a selected water level within said water tank, said selected water level being less than said full flush level, said air valve comprising:
- a body having an inlet and an outlet;
- a rotor disposed within said body and including a slot therein for pneumatically connecting the inlet and the outlet upon rotation of said rotor;
- and
- a rotor driver for rotating the rotor in order to alternatively align the slot over the inlet and outlet to provide the pneumatic connection and not align the slot over the inlet and outlet to prevent pneumatic connection.
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Dependencies are inferred from the claim text.