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US3591869A Expired / Lapsed US ⏱️ 0.0 years remaining

Toilet bowl (reverse trap bowl)

Assignee: Trane US Inc
•
Filing: 1969-03-04
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Granted: 1971-07-13
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Expires: 1989-03-04
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Abstract

Abstract Covers a toilet bowl of the reverse trap type which is about one-seventh lighter in weight than other such bowls and may be made by joining only two parts together. The bowl includes jet, up-leg, down-leg and horizontal passageways in which the jet and up-leg passageways are inclined at equal but opposite angles and the up-leg and down-leg passageways are parallel to each other and separated by a thin wall providing the normal weir of the bowl.

Inventors

  • 👤 Franklin Keith Manning

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-08 13:01
CPC Classifications
E; E03; E03D; E03D11/00; E03D11/02; E03D2201/00; E03D2201/30

Claims Analysis

Total Claims: 14
Claim 1
Independent Claim 221 words
A toilet bowl of the reverse trap type formed essentially by joining two pieces of vitreous china, said bowl having a flanged raceway along its upper edge having a plurality of small swirl openings distributed along the periphery of the raceway and pointed toward the well of the bowl, a single jet passageway for said bowl, said single jet passageway being located at the front of the bowl and extending downwardly from the raceway to the well located at the center of tHe bowl, an up-leg passageway extending upwardly from the well of the bowl in a direction toward the rear of the bowl, said jet passageway providing the only jetstream of the bowl, said jetstream up-leg passageway, a down-leg passageway substantially parallel to the up-leg passageway and separated from the up-leg passageway by a wall providing a weir to fix the normal upper water level in the bowl, and a horizontal passageway extending from the down-leg passageway, in a direction toward the rear of the bowl, to the discharge opening directed downwardly through the bottom of the bowl, said jet passageway substantially defining the front structural wall of the bowl while the down-leg passageway substantially defines the rear structural wall of the bowl so that the front and rear walls of the bowl are at substantially equal and opposite angles.
Claim 2
Dependent Claim 221 words
A toilet bowl of the reverse trap type formed essentially by joining two pieces of vitreous china, said bowl having a flanged raceway along its upper edge having a plurality of small swirl openings distributed along the periphery of the raceway and pointed toward the well of the bowl, a single jet passageway for said bowl, said single jet passageway being located at the front of the bowl and extending downwardly from the raceway to the well located at the center of tHe bowl, an up-leg passageway extending upwardly from the well of the bowl in a direction toward the rear of the bowl, said jet passageway providing the only jetstream of the bowl, said jetstream up-leg passageway, a down-leg passageway substantially parallel to the up-leg passageway and separated from the up-leg passageway by a wall providing a weir to fix the normal upper water level in the bowl, and a horizontal passageway extending from the down-leg passageway, in a direction toward the rear of the bowl, to the discharge opening directed downwardly through the bottom of the bowl, said jet passageway substantially defining the front structural wall of the bowl while the down-leg passageway substantially defines the rear structural wall of the bowl so that the front and rear walls of the bowl are at substantially equal and opposite angles.
Claim 3
Dependent Claim 34 words
A toilet bowl of the reverse trap type according to claim 1, in which the jet passageway has an orifice through which water is emitted at high velocity into the well of the bowl.
Claim 4
Dependent Claim 35 words
A toilet bowl of the reverse trap type according to claim 2, in which the jetway and up-leg passageways are directed at complimentary angles of about 45* with respect to the floor of the bowl.
Claim 5
Dependent Claim 47 words
A toilet bowl of the reverse trap type according to claim 3 in which the outer walls of the front and rear of the bowl are parts of the jetway and down-leg passageways, respectively, and are relatively thin and are pointed toward the center of the bowl.
Claim 6
Dependent Claim 32 words
A toilet bowl of the reverse trap type according to claim 4, in which the adjacent surfaces of the up-leg and down-leg are separated from each other by a thin common wall.
Claim 7
Dependent Claim 51 words
A toilet bowl according to claim 5, in which the entire recited combination is constructed of vitreous china in only two parts which are separated from each other about a line substantially coinciding with the bottom of the flanged raceway, the two parts being joined together while in a semiplastic state.
Claim 8
Dependent Claim 32 words
A toilet bowl according to claim 6, in which the down-leg passageway and the horizontal passageway meet each other toward the center of the bowl and in front of the discharge opening.
Claim 9
Dependent Claim 179 words
A toilet bowl formed essentially by joining two pieces of vitreous china, said bowl having jet, up-leg, down-leg and horizontal passageways, the jet passageway being adjacent the front of the bowl and having an orifice on one side of the well of the bowl while the opening to the up-leg passageway is located on the other side of said well, said jet passageway providing the only jet stream traveling through the well of the bowl and upwardly through the up-leg passageway, the up-leg and down-leg passageways being substantially parallel to each other and spaced by a thin wall providing a weir to establish the normal level of water in the bowl, the jet passageway forming an angle with the floor of the bowl which is substantially equal and opposite to the angle of the up-leg passageway, said jet passageway substantially defining the front structural wall of the bowl while the down-leg passageway substantially defines the rear structural wall of the bowl so that the external front and rear walls of the bowl are at substantially equal and opposite angles.
Claim 10
Dependent Claim 179 words
A toilet bowl formed essentially by joining two pieces of vitreous china, said bowl having jet, up-leg, down-leg and horizontal passageways, the jet passageway being adjacent the front of the bowl and having an orifice on one side of the well of the bowl while the opening to the up-leg passageway is located on the other side of said well, said jet passageway providing the only jet stream traveling through the well of the bowl and upwardly through the up-leg passageway, the up-leg and down-leg passageways being substantially parallel to each other and spaced by a thin wall providing a weir to establish the normal level of water in the bowl, the jet passageway forming an angle with the floor of the bowl which is substantially equal and opposite to the angle of the up-leg passageway, said jet passageway substantially defining the front structural wall of the bowl while the down-leg passageway substantially defines the rear structural wall of the bowl so that the external front and rear walls of the bowl are at substantially equal and opposite angles.
Claim 11
Dependent Claim 25 words
A toilet bowl according to claim 8 in which the outer walls of the down-leg and horizontal passageways are joined by a relatively thin wall.
Claim 12
Dependent Claim 23 words
A toilet bowl according to claim 9 in which the angles of the jet, up-leg and down-leg passageways are substantially equal to 45*.
Claim 13
Dependent Claim 22 words
A toilet bowl according to claim 10 having a flanged raceway along its upper edge having a plurality of swirl holes therein.
Claim 14
Dependent Claim 27 words
A toilet bowl according to claim 11 in which the flow through the horizontal passageway is rearward toward a discharge opening in the bottom of the bowl.

References Cited (Backward Citations)

US1979739A Cited
US2066883A Cited
US2056158A Cited
US2164319A Cited
US2344649A Cited
US3484873A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1974-07-12 1975-01-11 1975-07-13 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1978-07-12 1979-01-11 1979-07-13 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1982-07-12 1983-01-11 1983-07-13 $7700.00 Window Closed / Lapsed

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