Valves and valve actuation – Fluid actuated or retarded – Pilot or servo type motor
Reexamination Certificate
2005-08-02
2005-08-02
Yu, Justine R. (Department: 3751)
Valves and valve actuation
Fluid actuated or retarded
Pilot or servo type motor
C251S040000, C251S129030, C251S129040, C004S304000
Reexamination Certificate
active
06923424
ABSTRACT:
An automatic flush actuation apparatus, which is incorporated with a flushing system having a water inlet, a water outlet, and a water chamber communicating therebetween, that includes a valve member being moved by a flush lever for releasing the water pressure within the water chamber to allow the water passing from the water inlet to the water outlet, and a sensor-operated powering assembly including a relief valve, which includes a resilient element for retaining a valve stopper to normally close the water passage, provided at the valve member for controlling the water flowing to the water outlet and an actuator arranged in such a manner that while sensing a presence of a user of the flushing system, the actuator is driven to move the relief valve to an opened position for releasing the water pressure within the water chamber to allow the water passing to said water outlet.
REFERENCES:
patent: 5169118 (1992-12-01), Whiteside
patent: 6019343 (2000-02-01), Tsai
patent: 6161814 (2000-12-01), Jahrling
Kao Hsiang-Chin
Liu Shao-Kuang
Lu Jackson
Maercovich Jorge
Maercovich Leo
Chan Raymond Y.
David and Raymond
deVore Peter
Yu Justine R.
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