US3714958A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mixing valve assembly
Assignee: Stanadyne LLC
•
Filing: 1972-03-01
•
Granted: 1973-02-06
•
Expires: 1992-03-01
Abstract
Abstract A mixing valve assembly constructed of plastic parts in which end pieces that form valve bodies receive the ends of conduits of a mixing chamber. Ends of the conduits are received in recesses of the end pieces, are secured by an adhesive or solvent, oriented by mating non-circular portions, and sealed by both the adhesive or solvent and an O-ring between each conduit and the connected end piece. In addition, the parts can be further secured and sealed by an ultrasonic weld.
Inventors
- 👤 T Johnson
- 👤 J Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:39
CPC Classifications
F; F16; F16K; F16K19/00; F16K19/006; F16K27/00; F16K27/02; F16K27/0263; Y; Y10; Y10T; Y10T137/00; Y10T137/598; Y10T137/6011; Y10T137/6014; Y10T137/8593; Y10T137/87571; Y10T137/87676; Y10T137/87684
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
200 words
A valve assembly comprising a plastic center piece that forms a mixing chamber; two plastic conduits that extend from the center piece in communication with said mixing chamber; and two plastic end pieces each adapted to form a valve structure, each with a recess for receiving an extending end of one of said two conduits, at least a first portion of said recess being cylindrical and a second portion being noncylindrical; the extending end of each of said conduits having a cylindrical portion adapted to be received in the cylindrical portion of the recess of one of said end pieces and a noncylindrical portion adapted to be received in said second portion to align the end piece in a predetermined orientation relative to the conduit received therein; an annular groove in said cylindrical portion of one of each mating conduit and end piece adapted to receive an O-ring; and generally radially disposed surfaces in facing relationship, one on each end piece and one opposed thereto on each conduit, and a bead between said facing surfaces of each end piece and conduit, each bead being integral with and extending from one facing surface and adapted to contact the adjacent facing surface.
Claim 2
Dependent Claim
200 words
A valve assembly comprising a plastic center piece that forms a mixing chamber; two plastic conduits that extend from the center piece in communication with said mixing chamber; and two plastic end pieces each adapted to form a valve structure, each with a recess for receiving an extending end of one of said two conduits, at least a first portion of said recess being cylindrical and a second portion being noncylindrical; the extending end of each of said conduits having a cylindrical portion adapted to be received in the cylindrical portion of the recess of one of said end pieces and a noncylindrical portion adapted to be received in said second portion to align the end piece in a predetermined orientation relative to the conduit received therein; an annular groove in said cylindrical portion of one of each mating conduit and end piece adapted to receive an O-ring; and generally radially disposed surfaces in facing relationship, one on each end piece and one opposed thereto on each conduit, and a bead between said facing surfaces of each end piece and conduit, each bead being integral with and extending from one facing surface and adapted to contact the adjacent facing surface.
Claim 3
Dependent Claim
200 words
A valve assembly comprising a plastic center piece that forms a mixing chamber; two plastic conduits that extend from the center piece in communication with said mixing chamber; and two plastic end pieces each adapted to form a valve structure, each with a recess for receiving an extending end of one of said two conduits, at least a first portion of said recess being cylindrical and a second portion being noncylindrical; the extending end of each of said conduits having a cylindrical portion adapted to be received in the cylindrical portion of the recess of one of said end pieces and a noncylindrical portion adapted to be received in said second portion to align the end piece in a predetermined orientation relative to the conduit received therein; an annular groove in said cylindrical portion of one of each mating conduit and end piece adapted to receive an O-ring; and generally radially disposed surfaces in facing relationship, one on each end piece and one opposed thereto on each conduit, and a bead between said facing surfaces of each end piece and conduit, each bead being integral with and extending from one facing surface and adapted to contact the adjacent facing surface.
Claim 4
Dependent Claim
200 words
A valve assembly comprising a plastic center piece that forms a mixing chamber; two plastic conduits that extend from the center piece in communication with said mixing chamber; and two plastic end pieces each adapted to form a valve structure, each with a recess for receiving an extending end of one of said two conduits, at least a first portion of said recess being cylindrical and a second portion being noncylindrical; the extending end of each of said conduits having a cylindrical portion adapted to be received in the cylindrical portion of the recess of one of said end pieces and a noncylindrical portion adapted to be received in said second portion to align the end piece in a predetermined orientation relative to the conduit received therein; an annular groove in said cylindrical portion of one of each mating conduit and end piece adapted to receive an O-ring; and generally radially disposed surfaces in facing relationship, one on each end piece and one opposed thereto on each conduit, and a bead between said facing surfaces of each end piece and conduit, each bead being integral with and extending from one facing surface and adapted to contact the adjacent facing surface.
Claim 5
Dependent Claim
179 words
A valve assembly comprising a plastic center piece that forms a mixing chamber; two plastic conduits that extend from the center piece in communication with said mixing chamber; and two plastic end pieces each adapted to form a valve structure, each with a recess for receiving an extending end of one of said two conduits, at least a portion of said recess being cylindrical; the extending end of each of said conduits having a cylindrical portion adapted to be received in the cylindrical portion of the recess of one of said end pieces; an annular groove in said cylindrical portion of one of each mating conduit and end piece adapted to receive an O-ring; and generally radially disposed surfaces in facing relationship, one on each end piece and one opposed thereto on each conduit and a continuous bead between said facing surfaces of each end piece and conduit, each bead being integral with and extending from one facing surface and adapted to initially contact the adjacent facing surface and to melt and form a weld between said facing surfaces.
Claim 6
Dependent Claim
179 words
A valve assembly comprising a plastic center piece that forms a mixing chamber; two plastic conduits that extend from the center piece in communication with said mixing chamber; and two plastic end pieces each adapted to form a valve structure, each with a recess for receiving an extending end of one of said two conduits, at least a portion of said recess being cylindrical; the extending end of each of said conduits having a cylindrical portion adapted to be received in the cylindrical portion of the recess of one of said end pieces; an annular groove in said cylindrical portion of one of each mating conduit and end piece adapted to receive an O-ring; and generally radially disposed surfaces in facing relationship, one on each end piece and one opposed thereto on each conduit and a continuous bead between said facing surfaces of each end piece and conduit, each bead being integral with and extending from one facing surface and adapted to initially contact the adjacent facing surface and to melt and form a weld between said facing surfaces.
Claim 7
Dependent Claim
107 words
A valve assembly comprising a plastic center piece that forms a mixing chamber and two plastic end pieces each adapted to form a valve structure, said center piece and end pieces having interconnected conduit portions, the interconnections therebetween being each comprised of (a) a recess in one conduit portion that receives the end of the connected conduit portion in mating relationship, (b) self aLignment means locating the centerpiece and valve structure in predetermined positional relationship, (c) an annular groove in one mating conduit portion of each interconnection, (d) an O-ring in each said annular groove, and (e) a circumferential plastic weld securing said mating conduit portions together.
Claim 8
Dependent Claim
107 words
A valve assembly comprising a plastic center piece that forms a mixing chamber and two plastic end pieces each adapted to form a valve structure, said center piece and end pieces having interconnected conduit portions, the interconnections therebetween being each comprised of (a) a recess in one conduit portion that receives the end of the connected conduit portion in mating relationship, (b) self aLignment means locating the centerpiece and valve structure in predetermined positional relationship, (c) an annular groove in one mating conduit portion of each interconnection, (d) an O-ring in each said annular groove, and (e) a circumferential plastic weld securing said mating conduit portions together.
Claim 9
Dependent Claim
43 words
A mixing valve assembly as set forth in claim 3 wherein said circumferential plastic weld is formed between mutually opposed circumferential surfaces one of which is a shoulder on one conduit portion and one of which carries a bead that forms the weld.
Claim 10
Dependent Claim
175 words
A mixing valve assembly comprising a plastic mixing chamber having a central portion with a cavity and conduit portion extending therefrom in opposite directions, and two identically constructed plastic end pieces adapted to form valve structure attached one to the end of each conduit portion, each of said end pieces having a central passageway and a transverse passageway in communication therewith, a recess in one of said transverse passageway and attached conduit portion and a radial shoulder and extending nipple at the end of the other, said recess portion formed by a surface of revolution and a surface of nonrevolution axially displaced therefrom, said radial shoulder being abutted and welded throughout an annular area to an end surface of the connected piece and said nipple being shaped to be received in said recess with a close fit, one portion of said nipple being formed of a surface of revolution and containing an annular groove, and another portion of said nipple having a surface of non-revolution, and an O-ring in the annular groove of the nipple.
Claim 11
Dependent Claim
175 words
A mixing valve assembly comprising a plastic mixing chamber having a central portion with a cavity and conduit portion extending therefrom in opposite directions, and two identically constructed plastic end pieces adapted to form valve structure attached one to the end of each conduit portion, each of said end pieces having a central passageway and a transverse passageway in communication therewith, a recess in one of said transverse passageway and attached conduit portion and a radial shoulder and extending nipple at the end of the other, said recess portion formed by a surface of revolution and a surface of nonrevolution axially displaced therefrom, said radial shoulder being abutted and welded throughout an annular area to an end surface of the connected piece and said nipple being shaped to be received in said recess with a close fit, one portion of said nipple being formed of a surface of revolution and containing an annular groove, and another portion of said nipple having a surface of non-revolution, and an O-ring in the annular groove of the nipple.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-02-06 | 1976-08-07 | 1977-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-02-06 | 1980-08-07 | 1981-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-02-06 | 1984-08-07 | 1985-02-06 | $7700.00 | Window Closed / Lapsed |