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US 4,232,409 AGranted
Pneumatic assisted flushing apparatus for toilets
OwnerMinh Van Phaminventor
Life of this patent
Estimating the term…
Abstract
Presented is an apparatus for use in conjunction with a toilet of the flush-type which utilizes a charge of compressed air in conjunction with a low volume of water to discharge waste products from a toilet fixture.
Claims33
An apparatus for compressing a predetermined volume of air without the use of an independent motor-driven air compressor and for delivering said compressed air under pressure to the evacuation chamber of a pneumatic assisted water flush toilet bowl to discharge waste products from the evacuation chamber, comprising:
- (a) a fluid-tight housing having walls defining a hollow interior;
- (b) at least one piston reciprocable within said housing and constituting a displaceable wall defining with said housing walls a pair of chambers variable in volume in response to displacement of said piston, one of said chambers of said pair containing air at a predetermined pressure;
- (c) means controlling admission of water under pressure to the other chamber of the pair to effect displacement of the piston to reduce the volume of the first mentioned chamber of the pair to pressurize the air therewithin above said predetermined pressure;
- and
- (d) means controlling delivery to said evacuation chamber of pressurized air from said other chamber of the pair to thereby effect discharge of waste products from said evacuation chamber.
2 more elements
In combination:
- A. a water flush toilet bowl having
- (1) a base portion divided into a waste product collection recess and a waste product evacuation chamber and including an opening providing communication between said waste product collection recess and said waste product evacuation chamber,
- (2) an evacuation gate normally sealingly covering said opening and selectively operable to uncover said opening whereby waste product collected in said collection recess passes through said opening past said gate and into said evacuation chamber,
- (3) means operatively asssociated with said evacuation gate to normally retain the gate sealingly covering said opening and selectively operable to open said evacuation gate to uncover said opening;
- and
- B. means operatively associated with said toilet bowl to flush waste products therefrom and including:
- (1) means including a housing having a movable wall defining chambers for segregating predetermined quantities of air and water from separate sources thereof,
- (2) means for delivering a portion of said segregated predetermined quantity of water to said waste product collection recess,
- (3) means for opening said evacuation gate for a predetermined interval to permit transfer from said collection recess of said portion of water and any waste product into said evacuation chamber,
- (4) means for closing said evacuation gate following said predetermined interval,
- (5) means for delivering the remaining portion of said segregated predetermined quantity of water to said waste product collection recess after closing of said gate, and
- (6) means for thereafter delivering said predetermined quantity of air under pressure to said evacuation chamber to discharge the water and waste products therefrom.
9 more elements
The method of flushing waste products from a toilet bowl having a base portion divided into a waste product collection recess and a waste product evacuation chamber and including an opening providing communication between said waste product collection recess and said waste product evacuation chamber and an evacuation gate normally covering said opening, comprising the steps of:
- (a) simultaneously segregating from separate sources thereof predetermined quantities of water and air in a housing having a movable wall defining separate water and air chambers;
- (b) delivering said segregated predetermined quantity of water to the waste product collection recess of the toilet bowl over a predetermined water delivery interval;
- (c) during said predetermined water delivery interval opening said normally closed evacuation gate to flush waste products from said collection recess into said evacuation chamber;
- (d) thereafter closing said evacuation gate;
- and then
- (e) delivering said segregated predetermined quantity of air under pressure to said evacuation chamber while simultaneously segregating from said separate sources thereof another predetermined quantities of water and air.
3 more elements
An apparatus for compressing and delivering air under pressure to the evacuation chamber of a pneumatic assisted water flush toilet bowl to discharge waste products from the evacuation chamber, comprising:
- (a) a fluid-tight housing having walls defining a hollow interior:
- (b) at least one piston reciprocable within said housing and constituting a displaceable wall defining with said housing walls a pair of chambers variable in volume in response to displacement of said piston, one of said chambers of said pair containing air at a predetermined pressure;
- (c) means controlling admission of water under pressure to the other chamber of the pair to effect displacement of the piston to reduce the volume of the first mentioned chamber of the pair to pressurize the air therewithin above said predetermined pressure;
- (d) means controlling delivery to said evacuation chamber of pressurized air from said other chamber of the pair to thereby effect discharge of waste products from said evacuation chamber;
- and
- (e) at least one additional pair of chambers within said housing, a piston separating the two chambers of the additional pair and constituting a displaceable wall movable to vary the volumes of said additional pair of chambers, means connecting said first mentioned piston with the piston separating said additional pair of chambers whereby said pistons move in unison, and means controlling the ingress and egress of air into and out of said additional pair of chambers in response to movement of said piston whereby movement of said piston in one direction pressurizes the air in at least one of said additional pair of chambers for delivery to said evacuation chamber.
3 more elements
An apparatus for compressing and delivering air under pressure to the evacuation chamber of a pneumatic assisted water flush toilet bowl to discharge waste products from the evacuation chamber, comprising:
- (a) a fluid-tight housing having walls defining a hollow interior;
- (b) at least one piston reciprocable within said housing and constituting a displaceable wall defining with said housing walls a pair of chambers variable in volume in response to displacement of said piston, one of said chambers of said pair containing air at a predetermined pressure;
- (c) means controlling admission of water under pressure to the other chamber of the pair to effect displacement of the piston to reduce the volume of the first mentioned chamber of the pair to pressurize the air therewithin above said predetermined pressure;
- (d) means controlling delivery to said evacuation chamber of pressurized air from said other chamber of the pair to thereby effect discharge of waste products from said evacuation chamber;
- and
- (e) said evacuation chamber being provided with a spring-pressed normally closed gate, and means including a vacuum cylinder operative upon movement of said piston to increase the volume of said other chamber of the pair to open said normally closed gate.
3 more elements
An apparatus for compressing and delivering air under pressure to the evacuation chamber of a pneumatic assisted water flush toilet bowl to discharge waste products from the evacuation chamber, comprising:
- (a) a fluid-tight housing having walls defining a hollow interior;
- (b) at least one piston reciprocable within said housing and constituting a displaceable wall defining with said housing walls a pair of chambers variable in volume in response to displacement of said piston, one of said chambers of said pair containing air at a predetermined pressure;
- (c) means controlling admission of water under pressure to the other chamber of the pair to effect displacement of the piston to reduce the volume of the first mentioned chamber of the pair to pressurized the air therewithin above said predetermined pressure;
- (d) means controlling delivery to said evacuation chamber of pressurized air from said other chamber of the pair to thereby effect discharge of waste products from said evacuation chamber;
- and
- (e) said housing being divided into two separate sections by an intervening wall, said piston is reciprocable within one section to divide that section into said pair of chambers variable in volume in response to displacement of said piston, and a second piston reciprocable in said other section and dividing said other section into an additional pair of chambers variable in volume in response to reciprocation of said second piston, and means connecting said pistons whereby they move in unison.
3 more elements
An apparatus for compressing and delivering air under pressure to the evacuation chamber of a pneumatic assisted water flush toilet bowl to discharge waste products from the evacuation chamber, comprising:
- (a) a fluid-tight housing having walls defining a hollow interior;
- (b) at least one piston reciprocable within said housing and constituting a displaceable wall defining with said housing walls a pair of chambers variable in volume in response to displacement of said piston, one of said chambers of said pair containing air at a predetermined pressure;
- (c) means controlling admission of water under pressure to the other chamber of the pair to effect displacement of the piston to reduce the volume of the first mentioned chamber of the pair to pressurize the air therewithin above said predetermined pressure;
- (d) means controlling delivery to said evacuation chamber of pressurized air from said other chamber of the pair to thereby effect discharge of waste products from said evacuation chamber;
- and
- (e) said means controlling admission of water under pressure to said one chamber comprises a regenerative valve assembly including an inlet passageway providing ingress of water to said one chamber, a valve member moveable to open or close said inlet passageway, and means disposed between said valve member and said piston operative to o pen said inlet passageway for the passage of water therethrough when the piston reaches the limit of its displacement in one direction and operative to close said inlet passageway to prevent passage of water therethrough when the piston reaches the limit of its displacement in the opposite direction.
3 more elements
In combination:
- A. a water flush toilet bowl having
- (1) a base portion divided into a waste product collection recess and a waste product evacuation chamber and including an opening providing communication between said waste product collection recess and said waste product evacuation chamber,
- (2) an evacuation gate normally sealingly covering said opening and selectively operable to uncover said opening whereby waste product collected in said collection recess passes through said opening past said gate and into said evacuation chamber,
- (3) means operatively associated with said evacuation gate to normally retain the gate sealingly covering said opening and selectively operable to open said evacuation gate to uncover said opening;
- and
- B. means operatively associated with said toilet bowl to flush waste products therefrom by sequentially:
- (1) segregating a predetermined quantity of water from a source thereof,
- (2) delivering a portion of said segregated predetermined quantity of water to said waste product collection recess,
- (3) opening said evacuation gate for a predetermined interval to permit transfer from said collection recess of said portion of water and any waste product into said evacuation chamber,
- (4) closing said evacuation gate following said predetermined interval,
- (5) delivering the remaining portion of said segregated predetermined quantity of water to said waste product collection recess after closing of said gate, and
- (6) thereafter delivering air under pressure to said evacuation chamber to discharge the water and waste products therefrom;
- C. said means operatively associated with said toilet bowl to flush waste products therefrom including:
- (a) a housing having walls defining a hollow interior;
- (b) at least one piston reciprocable within said housing and constituting a displaceable wall defining with said housing walls a pair of chambers variable in volume in response to displacement of said piston, one of said chambers of said pair containing air at a predetermined pressure;
- (c) means controlling segregation of said predetermined quantity of water in one chamber of the pair while effecting displacement of the piston to reduce the volume of the other chamber of the pair to pressurize the air therewithin above said predetermined pressure;
- and
- (d) means controlling delivery of said portion of said segregated predetermined quantity of water to said collection recess, opening and then closing said evacuation gate, delivering the remaining portion of said segregated predetermined quantity of water to said waste product collection recess, and thereafter delivering air under pressure to said evacuation chamber to discharge the water and waste products therefrom while simultaneously segregating another predetermined quantity of water in one chamber of said pair of chambers.
15 more elements
The method of flushing waste products from a toilet bowl having a base portion divided into a waste product collection recess and a waste product evacuation chamber and including an opening providing communication between said waste product collection recess and said waste product evacuation chamber and an evacuation gate normally covering said opening, comprising the steps of:
- (a) segregating from a source thereof a predetermined quantity of water;
- (b) delivering said segregated predetermined quantity of water to the waste product collection recess of the toilet bowl over a predetermined water delivery interval;
- (c) during said predetermined water delivery interval opening said normally closed evacuation gate to flush waste products from said collection recess into said evacuation chamber;
- (d) thereafter closing said evacuation gate;
- and then
- (e) delivering air under pressure to said evacuation chamber while simultaneously segregating from said source thereof another predetermined quantity of water;
- and
- (f) segregating air from the ambient atmosphere into an expanding volume simultaneous to delivery of said segregated predetermined quantity of water to said collection recess.
5 more elements
The method of flushing waste products from a toilet bowl having a base portion divided into a waste product collection recess and a waste product evacuation chamber and including an opening providing communication between said waste product collection recess and said waste product evacuation chamber and an evacuation gate normally covering said opening, comprising the steps of:
- (a) segregating from a source thereof a predetermined quantity of water;
- (b) delivering said segregated predetermined quantity of water to the waste product collection recess of the toilet bowl over a predetermined water delivery interval;
- (c) during said predetermined water delivery interval opening said normally closed evacuation gate to flush waste products from said collection recess into said evacuation chamber;
- (d) thereafter closing said evacuation gate;
- and then
- (e) delivering air under pressure to said evacuation chamber while simultaneously segregating from said source thereof another predetermined quantity of water;
- (f) said toilet bowl being equipped with a housing having a hollow interior divided into a water receiving chamber for receiving and segregating said predetermined quantity of water, and an air compression chamber within which air is pressurized and from which it is delivered to said evacuation chamber;
- and
- (g) sucking air from the ambient atmosphere into said air compression chamber simultaneous to expulsion of water from said water receiving chamber.
6 more elements
Dependencies are inferred from the claim text.