US3827636A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Substantially leakless aerator
Assignee: Trane US Inc
•
Filing: 1973-02-15
•
Granted: 1974-08-06
•
Expires: 1993-02-15
Abstract
Abstract This application covers an aerator for a faucet. The aerator includes four principal parts: a disk or diaphragm having a plurality of apertures at its upstream end for converting incoming water into a plurality of jets of water; a substantially cylindrical body having an upper shoulder to support the diaphragm and having apertures to admit air to be mixed with the water jets produced by the diaphragm; and a pair of spaced screens of different dimensions downstream of the diaphragm for additionally mixing and emitting the air and water combination. The incoming air and the water jets developed by the diaphragm are combined and mixed in the space or chamber above the two screens before being discharged through the discharge outlet of the aerator. The diaphragm embodies a so-called ''''crush ring'''' positioned peripherally at its upstream end. The crush-ring contacts a flat ring near the end of the faucet spout and, because it is ''''crushed'''' or distorted to overcome and absorb irregularities in the end of the spout, it forms a primary obstruction to prevent leakage through the narrow spaces formed by the threaded segments that hold the aerator against the faucet spout. The body also provides additional spaces along its periphery to aspirate water that may be otherwise leaked out of the above-noted threaded portions of the structure and hence such water will be emitted from the downstream discharge end of the aerator, thereby avoiding leakage from the device.
Inventors
- 👤 R Parkison
- 👤 B Fichter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:18
CPC Classifications
E; E03; E03C; E03C1/00; E03C1/02; E03C1/08; E03C1/084; Y; Y10; Y10S; Y10S261/00; Y10S261/22
Claims Analysis
Total Claims: 30
Claim 1
Independent Claim
224 words
A substantially leakless aerator for a water conduit comprising a body member joined by threads to said conduit, an apertured diaphragm supported transversely by said body member at the upstream end of the body member and having an upstream lip segment formed as a projection substantially normal to the entire peripheral surface of said diaphragm, said conduit having an inner peripheral wall member to continuously engage the upper peripheral surface of said lip segment to form a substantially continuous barrier against leakage of water through said threads joining the body member to the conduit, the apertures of said diaphragm forming separate and distinct substantially parallel streams exiting from said diaphragm, said body member having openings for introducing air into the body member to be mixed with the streams of water traversing the apertures of the diaphragm, and a plurality of spaced screens supported near the downstream end of the body member and through which the mixture of air and water Is transmitted and then discharged from said body member, the openings in said body member being substantially parallel to each other and extending from the downstream end of the body member to the space between the diaphragm and said screens, said diaphragm having peripheral slots therein for diverting water leaking past the lip segment into the mainstream of the body member at reduced pressure.
Claim 2
Dependent Claim
224 words
A substantially leakless aerator for a water conduit comprising a body member joined by threads to said conduit, an apertured diaphragm supported transversely by said body member at the upstream end of the body member and having an upstream lip segment formed as a projection substantially normal to the entire peripheral surface of said diaphragm, said conduit having an inner peripheral wall member to continuously engage the upper peripheral surface of said lip segment to form a substantially continuous barrier against leakage of water through said threads joining the body member to the conduit, the apertures of said diaphragm forming separate and distinct substantially parallel streams exiting from said diaphragm, said body member having openings for introducing air into the body member to be mixed with the streams of water traversing the apertures of the diaphragm, and a plurality of spaced screens supported near the downstream end of the body member and through which the mixture of air and water Is transmitted and then discharged from said body member, the openings in said body member being substantially parallel to each other and extending from the downstream end of the body member to the space between the diaphragm and said screens, said diaphragm having peripheral slots therein for diverting water leaking past the lip segment into the mainstream of the body member at reduced pressure.
Claim 3
Dependent Claim
37 words
A substantially leakless aerator according to claim 1 in which the spaced screens have meshes of different sizes, the screen of the largest meshes being positioned upstream and the screen of the smallest meshes being positioned downstream.
Claim 4
Dependent Claim
224 words
The combination of a faucet having a discharge port, a flat ring mounted and held within said discharge port of the faucet for providing a peripheral projection within said discharge port, a cylindrical aerator body threadedly connected to said discharge port, a perforated diaphragm positioned at the upstream end of the aerator body and held perpendicular to the axis of the aerator body for converting water received by the faucet into a pluraltiy of parallel independent and distinct jets of water discharged by its apertures and having a peripheral upstream lip substantially normal to and adjacent the outer rim of the diaphragm for contacting the projection within the discharge port of the faucet when the aerator body is connected to the faucet, the areator body having a plurality of peripheral openings adjacent the downstream end of the aerator body for receiving air to be mixed with the jets of water traversing the apertures of the diaphragm, the peripheral lip of the diaphragm, when contacting said projection, acting as a barrier to prevent leakage of water through the threads coupling the aerator body to the faucet, the diaphragm also having, in addition to its apertures, a plurality of peripheral slots therein for diverting, under reduced pressure, water leaking past said lip into the mainstream of the aerator body to prevent leakage of said diverted water.
Claim 5
Dependent Claim
224 words
The combination of a faucet having a discharge port, a flat ring mounted and held within said discharge port of the faucet for providing a peripheral projection within said discharge port, a cylindrical aerator body threadedly connected to said discharge port, a perforated diaphragm positioned at the upstream end of the aerator body and held perpendicular to the axis of the aerator body for converting water received by the faucet into a pluraltiy of parallel independent and distinct jets of water discharged by its apertures and having a peripheral upstream lip substantially normal to and adjacent the outer rim of the diaphragm for contacting the projection within the discharge port of the faucet when the aerator body is connected to the faucet, the areator body having a plurality of peripheral openings adjacent the downstream end of the aerator body for receiving air to be mixed with the jets of water traversing the apertures of the diaphragm, the peripheral lip of the diaphragm, when contacting said projection, acting as a barrier to prevent leakage of water through the threads coupling the aerator body to the faucet, the diaphragm also having, in addition to its apertures, a plurality of peripheral slots therein for diverting, under reduced pressure, water leaking past said lip into the mainstream of the aerator body to prevent leakage of said diverted water.
Claim 6
Dependent Claim
45 words
The combination of claim 3, including two flat screens spaced from each other and mounted within the aerator body, both screens additionally mixing the air and jets of water to form a laminar stream, the upstream screen mechanically reinforcing the wall of the aerator body.
Claim 7
Dependent Claim
31 words
The combination of claim 4 in which the two screens are meshed by stainless steel wire, the mesh of the downstream screen being finer than the mesh of the upstream screen.
Claim 8
Dependent Claim
252 words
An aerator comprising a substantially cylindrical body member threadedly connectable to a conduit having an internal peripheral projection and supplying pressurized water and having a plurality of substantially parallel openings in the wall of the body member for receiving air entering from the downstream end of the body member a diaphragm having a plurality of separate, independent concentric apertures through which water received from said conduit is converted into relatively high velocity distinctive substantially parallel turbulent water jets, said body member having an upper circular rim thereon for supporting said diaphragm, said diaphragm also having a continuous peripheral ring substantially normal to its upstream end and held against the internal peripheral projection of said conduit so as to provide a barrier against leakage of water from the body member, said diaphragm also having, in addition to its apertures, a plurality of peripheral slots for diverting into the mainstream of said body member the water that would otherwise leak past the peripheral ring of the diaphragm to prevent the leakage of the diverted water, and a pair of circular screens spaced from and parallel to each other and held on separate corresponding ledges of the body member near the downstream end of the body member, said screens transmitting, as a laminar aerated mainstream, a mixture of the water of the jets traversing the apertures of the diaphragm and the air received from the openings at the downstream end of the boyd member and the water divErted through the peripheral slots of the diaphragm.
Claim 9
Dependent Claim
252 words
An aerator comprising a substantially cylindrical body member threadedly connectable to a conduit having an internal peripheral projection and supplying pressurized water and having a plurality of substantially parallel openings in the wall of the body member for receiving air entering from the downstream end of the body member a diaphragm having a plurality of separate, independent concentric apertures through which water received from said conduit is converted into relatively high velocity distinctive substantially parallel turbulent water jets, said body member having an upper circular rim thereon for supporting said diaphragm, said diaphragm also having a continuous peripheral ring substantially normal to its upstream end and held against the internal peripheral projection of said conduit so as to provide a barrier against leakage of water from the body member, said diaphragm also having, in addition to its apertures, a plurality of peripheral slots for diverting into the mainstream of said body member the water that would otherwise leak past the peripheral ring of the diaphragm to prevent the leakage of the diverted water, and a pair of circular screens spaced from and parallel to each other and held on separate corresponding ledges of the body member near the downstream end of the body member, said screens transmitting, as a laminar aerated mainstream, a mixture of the water of the jets traversing the apertures of the diaphragm and the air received from the openings at the downstream end of the boyd member and the water divErted through the peripheral slots of the diaphragm.
Claim 10
Dependent Claim
32 words
An aerator according to claim 6 in which the diaphragm includes a plurality of projections adjacent its apertures so as to turbulate the water flowing downstream through said apertures as parallel jets.
Claim 11
Dependent Claim
271 words
A substantially leakless aerator for a water conduit comprising a body member joined by threads to said conduit, an apertured diaphragm supported transversely by said body member at the upstream end of the body member and having an upstream lip segment formed as a projection substantially normal to the entire peripheral surface of said diaphragm, said conduit having an inner peripheral wall member to continuously engage the upper peripheral surface of said lip segment to form a substantially continuous barrier against leakage of water through said threads joining the body member to the conduit, the apertures of said diaphragm forming separate and distinct substantially parallel streams exiting from said diaphragm, said body member having openings for introducing air into the body member to be mixed with the streams of water traversing the apertures of the diaphragm, and a plurality of spaced screens supported near the downstream end of the body member and through which the mixture of air and water is transmitted and then discharged from said body member, the spaced screens having meshes of different sizes, the screen of the largest meshes being positioned upstream and the screen of the smallest meshes being positioned downstream, the openings in the body member being peripherally arranged to be substantially parallel to each other and to extend from the downstream end of the body member to the space between the diaphragm and the upstream screen, and spaces being provided between the rim of the diaphragm and the body member so that said openings and said spaces together divert into the mainstream of the body member any water that leaks past the lip segment.
Claim 12
Dependent Claim
271 words
A substantially leakless aerator for a water conduit comprising a body member joined by threads to said conduit, an apertured diaphragm supported transversely by said body member at the upstream end of the body member and having an upstream lip segment formed as a projection substantially normal to the entire peripheral surface of said diaphragm, said conduit having an inner peripheral wall member to continuously engage the upper peripheral surface of said lip segment to form a substantially continuous barrier against leakage of water through said threads joining the body member to the conduit, the apertures of said diaphragm forming separate and distinct substantially parallel streams exiting from said diaphragm, said body member having openings for introducing air into the body member to be mixed with the streams of water traversing the apertures of the diaphragm, and a plurality of spaced screens supported near the downstream end of the body member and through which the mixture of air and water is transmitted and then discharged from said body member, the spaced screens having meshes of different sizes, the screen of the largest meshes being positioned upstream and the screen of the smallest meshes being positioned downstream, the openings in the body member being peripherally arranged to be substantially parallel to each other and to extend from the downstream end of the body member to the space between the diaphragm and the upstream screen, and spaces being provided between the rim of the diaphragm and the body member so that said openings and said spaces together divert into the mainstream of the body member any water that leaks past the lip segment.
Claim 13
Dependent Claim
25 words
A substantially leakless aerator according to claim 8, including a skirt member surrounding and spaced slightly from the body member to render the areator vandal-proof.
Claim 14
Dependent Claim
290 words
The combination of a faucet having a discharge port, a flat ring mounted and held within said discharge port of the faucet for providing a peripheral projection within said discharge port, a cylindrical aerator body threadedly connected to said discharge port, a perforated diaphragm positioned at the upstream end of the aerator body and held perpendicular to the axis of the aerator body for converting water received by the faucet into a plurality of parallel independent and distinct jets of water discharged by its apertures and having a peripheral upstream lip substantially normal to and adjacent the outer rim of the diaphragm for contacting the projection within the discharge port of the faucet when the aerator body is connected to the faucet, the aerator body having a plurality of peripheral openings adjacent the downstream end of the aerator body for receiving air to be mixed with the jets of water traversing the apertures of the diaphragm, the peripheral lip of the diaphragm, when contacting said projection, acting as a barrier to prevent leakage of water through the threads coupling the aerator body to the faucet, two flat screens spaced from each other and mounted within the aerator body, both screens additionally mixing the air and jets of water to form a laminar stream, the upstream screen mechanically reinforcing the wall of the aerator body, the two screens being meshed by stainless steel wire, the mesh of the downstream screen being finer than the mesh of the upstream screen, and means for rendering the aerator vandal-proof, said means including a shell spaced from the aerator body and encircling the aerator body so that any rotation of the shell will not connect the aerator body to or disconnect it from the conduit.
Claim 15
Dependent Claim
290 words
The combination of a faucet having a discharge port, a flat ring mounted and held within said discharge port of the faucet for providing a peripheral projection within said discharge port, a cylindrical aerator body threadedly connected to said discharge port, a perforated diaphragm positioned at the upstream end of the aerator body and held perpendicular to the axis of the aerator body for converting water received by the faucet into a plurality of parallel independent and distinct jets of water discharged by its apertures and having a peripheral upstream lip substantially normal to and adjacent the outer rim of the diaphragm for contacting the projection within the discharge port of the faucet when the aerator body is connected to the faucet, the aerator body having a plurality of peripheral openings adjacent the downstream end of the aerator body for receiving air to be mixed with the jets of water traversing the apertures of the diaphragm, the peripheral lip of the diaphragm, when contacting said projection, acting as a barrier to prevent leakage of water through the threads coupling the aerator body to the faucet, two flat screens spaced from each other and mounted within the aerator body, both screens additionally mixing the air and jets of water to form a laminar stream, the upstream screen mechanically reinforcing the wall of the aerator body, the two screens being meshed by stainless steel wire, the mesh of the downstream screen being finer than the mesh of the upstream screen, and means for rendering the aerator vandal-proof, said means including a shell spaced from the aerator body and encircling the aerator body so that any rotation of the shell will not connect the aerator body to or disconnect it from the conduit.
Claim 16
Dependent Claim
258 words
An aerator comprising a substantially cylindrical body member threadedly connectable to a conduit having an internal peripheral projection and supplyIng pressurized water and having a plurality of substantially parallel openings in the wall of the body member for receiving air entering from the downstream end of the body member, a diaphragm having a plurality of separate, independent concentric apertures through which water received from said conduit is converted into relatively high velocity distinctive substantially parallel turbulent water jets, said body member having an upper circular rim thereon for supporting said diaphragm, said diaphragm also having a continuous peripheral ring substantially normal to its upstream end and held against the internal peripheral projection of said conduit so as to provide a barrier against leakage of water from the body member, and a pair of circular screens spaced from and parallel to each other and held on separate corresponding ledges of the body member near the downstream end of the body member, said screens transmitting, as a laminar aerated stream, a mixture of the water of the jets traversing the apertures of the diaphragm and the air received from the openings at the downstream end of the body member, the diaphragm including a plurality of projections adjacent its apertures so as to turbulate the water flowing downstream through said apertures as parallel jets, and an enveloping shell positioned externally about the body member and spaced from, but retained by, the body member and rotatable about the body member without connecting the aerator to or disconnecting the aerator from the conduit.
Claim 17
Dependent Claim
258 words
An aerator comprising a substantially cylindrical body member threadedly connectable to a conduit having an internal peripheral projection and supplyIng pressurized water and having a plurality of substantially parallel openings in the wall of the body member for receiving air entering from the downstream end of the body member, a diaphragm having a plurality of separate, independent concentric apertures through which water received from said conduit is converted into relatively high velocity distinctive substantially parallel turbulent water jets, said body member having an upper circular rim thereon for supporting said diaphragm, said diaphragm also having a continuous peripheral ring substantially normal to its upstream end and held against the internal peripheral projection of said conduit so as to provide a barrier against leakage of water from the body member, and a pair of circular screens spaced from and parallel to each other and held on separate corresponding ledges of the body member near the downstream end of the body member, said screens transmitting, as a laminar aerated stream, a mixture of the water of the jets traversing the apertures of the diaphragm and the air received from the openings at the downstream end of the body member, the diaphragm including a plurality of projections adjacent its apertures so as to turbulate the water flowing downstream through said apertures as parallel jets, and an enveloping shell positioned externally about the body member and spaced from, but retained by, the body member and rotatable about the body member without connecting the aerator to or disconnecting the aerator from the conduit.
Claim 18
Dependent Claim
38 words
An aerator according to claim 11 in which the screens are meshed by stainless steel annealed wire cloth, the upstream screen having 24 X 24 meshes and the downstream screen having 40 X 40 meshes (per square inch).
Claim 19
Dependent Claim
215 words
A substantially leakless aerator for a water conduit comprising a body member, engaging threads on the conduit and the body member for connecting the body member to the conduit, a diaphragm supported at its periphery at the upstream end of the body member, said diaphragm having a plurality of distinct disconnected apertures through which incoming water is converted into substantially parallel turbulent jets, said diaphragm having a lip segment formed as a substantially normal projection extending along and throughout the upper surface of said diaphragm, the conduit having an internal wall segment to engage the upper end of the lip segment throughout the periphery of the lip segment to form a substantially continuous barrier against leakage of water through said threads, said body member having openings extending from the downstream end of said body member to an intermediate region of the body member so as to receive air to be mixed with the water jets traversing the diaphragm and for producing a reduced air pressure within the body member to aspirate water which leaks past the lip segment and to direct the leaked water downstream so that the leaked water may be diverted into the mainstream of the body member, and screen means for discharging the water from the downstream end of the body member.
Claim 20
Dependent Claim
215 words
A substantially leakless aerator for a water conduit comprising a body member, engaging threads on the conduit and the body member for connecting the body member to the conduit, a diaphragm supported at its periphery at the upstream end of the body member, said diaphragm having a plurality of distinct disconnected apertures through which incoming water is converted into substantially parallel turbulent jets, said diaphragm having a lip segment formed as a substantially normal projection extending along and throughout the upper surface of said diaphragm, the conduit having an internal wall segment to engage the upper end of the lip segment throughout the periphery of the lip segment to form a substantially continuous barrier against leakage of water through said threads, said body member having openings extending from the downstream end of said body member to an intermediate region of the body member so as to receive air to be mixed with the water jets traversing the diaphragm and for producing a reduced air pressure within the body member to aspirate water which leaks past the lip segment and to direct the leaked water downstream so that the leaked water may be diverted into the mainstream of the body member, and screen means for discharging the water from the downstream end of the body member.
Claim 21
Dependent Claim
80 words
A substantially leakless aerator for a water conduit according to claim 13, in which the screen means includes a first screen positioned on a ledge of the body member adjacent the upstream ends of the openings in the body member for reinforcing the wall of the body member, and a second screen of a mesh which is finer than the mesh of the first screen and which is positioned on a ledge downstream of the ledge supporting the first screen.
Claim 22
Dependent Claim
21 words
A substantially leakless aerator according to claim 14 in which the first and second screens are meshed by stainless steel wires.
Claim 23
Dependent Claim
37 words
A substantially leakless aerator according to claim 15, including a shell positioned about the body member and spaced therefrom so as to be freely movable about the body member without disengaging the body member form the conduit.
Claim 24
Dependent Claim
253 words
A substantially leakless aerator comprising a substantially cylindrical body member having two peripheral circular ledges spaced from each otheR near the downstream end thereof, two screens having meshes of different fineness, the coarser screen being supported by the upstream ledge and the finer screen by the downstream ledge, the body member having a plurality of substantially peripheral parallel air openings each of which extends from the downstream end of the body member and reaches above the upstream screen, and a circular diaphragm seated along the upstream end of the body member so as to provide a mixing chamber between its downstream end and the upstream screen, said diaphragm having a plurality of distinct non-connected apertures and associated barriers for converting received pressurized water into a plurality of substantially parallel turbulent jet streams emitted by said apertures, the diaphragm also having a peripheral ring formed on its upstream end as a barrier substantially normal thereto for providing a dam-like obstruction for blocking the leakage of water via a path between the peripheral ring on the diaphragm and any openings in the body member, air being aspirated upwardly through the parallel openings in the body member into the chamber to mix with the parallel jets of water traversing the diaphragm, the aspirated air reducing the pressure within the chamber for drawing water that would leak past the peripheral ring on the diaphragm into the chamber so that the drawn water will be discharged through the screens and then through the discharge port of the aerator.
Claim 25
Dependent Claim
253 words
A substantially leakless aerator comprising a substantially cylindrical body member having two peripheral circular ledges spaced from each otheR near the downstream end thereof, two screens having meshes of different fineness, the coarser screen being supported by the upstream ledge and the finer screen by the downstream ledge, the body member having a plurality of substantially peripheral parallel air openings each of which extends from the downstream end of the body member and reaches above the upstream screen, and a circular diaphragm seated along the upstream end of the body member so as to provide a mixing chamber between its downstream end and the upstream screen, said diaphragm having a plurality of distinct non-connected apertures and associated barriers for converting received pressurized water into a plurality of substantially parallel turbulent jet streams emitted by said apertures, the diaphragm also having a peripheral ring formed on its upstream end as a barrier substantially normal thereto for providing a dam-like obstruction for blocking the leakage of water via a path between the peripheral ring on the diaphragm and any openings in the body member, air being aspirated upwardly through the parallel openings in the body member into the chamber to mix with the parallel jets of water traversing the diaphragm, the aspirated air reducing the pressure within the chamber for drawing water that would leak past the peripheral ring on the diaphragm into the chamber so that the drawn water will be discharged through the screens and then through the discharge port of the aerator.
Claim 26
Dependent Claim
25 words
A substantially leakless aerator according to claim 17, in which the screens are meshed by stainless steel annealed wire cloth and have different sized meshes.
Claim 27
Dependent Claim
202 words
An aerator for a faucet, comprising external threads on the aerator to mesh with internal threads within the faucet, a diaphragm positioned laterally at the upstream end of the aerator and having apertures for converting water received by the aerator from the faucet into a plurality of turbulent jets, a pair of spaced screens positioned laterally across the aerator and located near the downstream end of the aerator, a plurality of substantially equal and parallel openings within the aerator extending from the downstream end of the aerator to positions between the diaphragm and the upstream screen for receiving air to be mixed with the jets of water, means for preventing leakage comprising a peripheral lip extending along the entire upstream surface of the diaphragm, and a flat peripheral ring positioned along the internal wall of the faucet for contacting the lip along the diaphragm throughout its peripheral length, the openings in the aerator being proportioned to establish a reduced pressure within the aerator for aspirating any water passing the lip on the diaphragm, such water being drawn under the influence of the reduced air pressure into the mainstream of the aerator to be discharged through the downstream discharge port of the aerator.
Claim 28
Dependent Claim
202 words
An aerator for a faucet, comprising external threads on the aerator to mesh with internal threads within the faucet, a diaphragm positioned laterally at the upstream end of the aerator and having apertures for converting water received by the aerator from the faucet into a plurality of turbulent jets, a pair of spaced screens positioned laterally across the aerator and located near the downstream end of the aerator, a plurality of substantially equal and parallel openings within the aerator extending from the downstream end of the aerator to positions between the diaphragm and the upstream screen for receiving air to be mixed with the jets of water, means for preventing leakage comprising a peripheral lip extending along the entire upstream surface of the diaphragm, and a flat peripheral ring positioned along the internal wall of the faucet for contacting the lip along the diaphragm throughout its peripheral length, the openings in the aerator being proportioned to establish a reduced pressure within the aerator for aspirating any water passing the lip on the diaphragm, such water being drawn under the influence of the reduced air pressure into the mainstream of the aerator to be discharged through the downstream discharge port of the aerator.
Claim 29
Dependent Claim
180 words
An aerator to be threadedly connected to the inner wall of a faucet, comprising a first leakage protection means, said first means including a peripheral ring mounted within the faucet upstream of the threads within the faucet to which the aerator is to be connected, a diaphragm mounted transversely across the upper periphery of the aerator, a peripheral lip mounted as a cylinder normal to the upstream side of the diaphragm and in contact with the peripheral ring in the faucet to block leakage through the threads connecting the aerator to the faucet, and a second leakage protection means, said second means including a plurality of openings in the wall of the aerator and peripherally arranged substantially parallel to each other along the downstream end of the aerator for receiving air, the received air producing a reduced pressure within the aerator so as to draw water traversing the ring within the faucet and the lip on the diaphragm so that such water will not be leaked out of the aerator but will be drawn into the mainstream of the aerator.
Claim 30
Dependent Claim
180 words
An aerator to be threadedly connected to the inner wall of a faucet, comprising a first leakage protection means, said first means including a peripheral ring mounted within the faucet upstream of the threads within the faucet to which the aerator is to be connected, a diaphragm mounted transversely across the upper periphery of the aerator, a peripheral lip mounted as a cylinder normal to the upstream side of the diaphragm and in contact with the peripheral ring in the faucet to block leakage through the threads connecting the aerator to the faucet, and a second leakage protection means, said second means including a plurality of openings in the wall of the aerator and peripherally arranged substantially parallel to each other along the downstream end of the aerator for receiving air, the received air producing a reduced pressure within the aerator so as to draw water traversing the ring within the faucet and the lip on the diaphragm so that such water will not be leaked out of the aerator but will be drawn into the mainstream of the aerator.
References Cited (Backward Citations)
US3104827A
Cited
US1190511A
Cited
GB224740A
Cited
US2388992A
Cited
US3270965A
Cited
US3321140A
Cited
US3388868A
Cited
US3531051A
Cited
US3642213A
Cited
US3672574A
Cited
US3712548A
Cited
US3635405A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-08-05 | 1978-02-04 | 1978-08-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-08-05 | 1982-02-04 | 1982-08-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-08-05 | 1986-02-04 | 1986-08-06 | $7700.00 | Window Closed / Lapsed |