Flushing apparatus for urinals

• US 4,611,356 A
• Filed: 04/11/1985
• Issued: 09/16/1986
• Est. Priority Date: 04/11/1985
• Status: Expired due to Fees

• Current Assignee: Hocheng Pottery Mfg. Co., Ltd.
• Original Assignee: Hocheng Pottery Mfg. Co., Ltd.
• Inventors: Lin, Yeh-Huong
• Primary Examiner(s): NOT, DEFINED
• Assistant Examiner(s): NOT, DEFINED
• Application Number:
  US06/721,953
• Time in Patent Office: 523 Days
• Field of Search: 4/301-305, 4/DIG. 3, 137/599, 251/30, 251/322, 251/323
• US Class Current: 4/301
• CPC Class Codes: E03D 3/00 Flushing devices operated by pressure of the water supply system flushing valves not connected to the water-supply main, also if air is blown in the water seal for a quick flushing
• CPC Class Codes: E03D 5/10 operated electrically E03D5/01, E03D5/12 take precedence, e.g. by a photo-cell; also combined with devices for opening or closing shutters in the bowl outlet and/or with devices for raising/or lowering seat and cover and/or for swiveling the bowl

Abstract

A flushing apparatus for urinals comprises: a housing including a first passage and a second passage adapted to communicate with the flush pipe; an automatic flush device including an electromagnetic valve having a valve stem biased by a first spring, a pressure sensing film provided with a pressure releasing hole and a ring flange, having at least one pressure balancing hole, and mounted below said valve stem with said pressure releasing hole adjoined beneath said valve stem; and a manual flush device having a manual button, a push rod, and a stop valve; whereby, automatic and manual flush operations will be effected without incurring any error action.

Claims

1. A flushing apparatus for urinals having a dual flushing actuating capability comprising:

a flush pipe;

a housing having an upper side, an inner wall and a bore in said upper side, said housing including;

a first passage, a first flush defined by said first passage, hole a second passage, a second flush hole defined by said second passage, in said inner wall, said first passage and said second passage operatively communicating with said flush pipe;

said housing including water regulating means for regulating the water flow flowing through said first passage and second passage;

a manual flush device including;

a button, said button mounted in said housing so that a portion of said button protrudes outwardly of said housing;

means for biasing said button so that a portion of said button protrudes outwardly of said housing;

a push rod pivotally joined with said button and forwardly extending through said second flush hole in said inner wall of said housing to the end thereof;

the diameter of the second flush hole being larger than that of said push rod;

a stop valve having a first and second end, said stop valve having a diameter larger than that of said second flush hole, said first end of said stop valve mounted at one end of said push rod, said second end of said stop valve conforming to the sides of said second flush hole;

a sealing gasket provided about the said second end said stop valve;

whereby when said button is pushed, said push rod will push said stop valve away from said second flush hole to thereby open said second passage until said manual button is released;

an automatic flush device including;

an electromagnetic actuated valve assembly mounted on external side of said housing, said assembly including;

a valve stem vertically mounted in said electromagnetic valve, said valve stem having a lower portion;

a first spring for biasing said valve stem whereby said biased valve stem extends through said bore into said housing;

said valve assembly adapted to be controlled by an infra red emitting-and-detecting control device mounted outside of said housing,

a infra red control device having means for emitting an infra red ray and detecting said ray as reflected from a human body and having, after a predetermined first time, means for actuating said electromagnetic valve to open said first passage and after a predetermined second time to close said first passage,

a pressure sensing film having a central level portion,

a pressure releasing hole at the center of said central level portion and a ring flange about said central level portion, with at least one pressure balancing hole provided in said ring flange, the diameter of said at least one pressure balancing hole being smaller than that of said pressure releasing hole, said pressure releasing hole mounted and positioned below said valve stem so that the underside of said lower portion of said valve stem is butts against said pressure releasing hole,

the assembly of said pressure sensing film and said valve stem dividing space within said first passage into an upper chamber and a lower chamber, each chamber being adapted to receive, contain and release water, said central level portion of said pressure sensing film tightly covering said first flush hole,

whereby when said electromagnetic valve is actuated by said control device said valve stem is moved to open said pressure releasing hole, the water filled in said upper chamber will rapidly drain out through said pressure releasing hole and said pressure sensing film will be expanded by the water pressure in said lower chamber to open said first passage until said electromagnetic valve is deactivated by said control device.

2. A flushing apparatus according to claim 1, wherein a sealing gasket is provided about said valve stem on the side thereof normally adjoining said pressure releasing hole of said pressure sensing film.