Patent US3594020A successfully refreshed from Google Patents.
US3594020A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fastening means for crankcase vent valve
Assignee: Stanadyne LLC
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Filing: 1969-04-24
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Granted: 1971-07-20
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Expires: 1989-04-24
Abstract
Abstract An improved means and method for fastening a crankcase ventilating valve in an internal combustion engine comprising an outlet body of heat stabilized plastic receiving therein the metal valve housing of a crankcase vent valve with said housing having both a straight knurled portion and a locking ridge to provide adequate locking of the valve housing in the outlet body.
Inventors
- 👤 William E Ehlert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:57
CPC Classifications
F; F01; F01M; F01M13/00; F01M13/02; F01M13/021; F01M13/022; F01M13/023; F16; F16L; F16L41/00; F16L41/02; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49908; Y10T29/49936
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
157 words
A means for forming a fluid tight connection between the valve housing and outlet body of crankcase vent valves at elevated temperatures, which connection is solely formed by said valve housing and outlet body, comprising an outlet body having a cylindrical portion with a tubular portion extending at right angles therefrom said cylindrical portion having a bore therein and a valve housing having a radially outwardly directed locking ridge and a straight knurled portion adjacent to but spaced from said locking ridge, said straight knurled portion and locking ridge having an outer diameter greater than the inner diameter of said cylindrical bore portion, said knurled portion and locking ridge engaging with and tightly holding said valve hOusing fast in said cylindrical bore portion of said outlet body, said outlet body providing a substantially smooth outer surface when assembled with substantially no deformation of its outer surface at least in the area of said ridge and knurled portion.
Claim 2
Dependent Claim
157 words
A means for forming a fluid tight connection between the valve housing and outlet body of crankcase vent valves at elevated temperatures, which connection is solely formed by said valve housing and outlet body, comprising an outlet body having a cylindrical portion with a tubular portion extending at right angles therefrom said cylindrical portion having a bore therein and a valve housing having a radially outwardly directed locking ridge and a straight knurled portion adjacent to but spaced from said locking ridge, said straight knurled portion and locking ridge having an outer diameter greater than the inner diameter of said cylindrical bore portion, said knurled portion and locking ridge engaging with and tightly holding said valve hOusing fast in said cylindrical bore portion of said outlet body, said outlet body providing a substantially smooth outer surface when assembled with substantially no deformation of its outer surface at least in the area of said ridge and knurled portion.
Claim 3
Dependent Claim
22 words
The device according to claim 1 wherein said outlet body is formed of a heat stabilized 66 nylon having high thermal stability.
Claim 4
Dependent Claim
66 words
The device according to claim 1 wherein the valve housing has a bore therethrough and a portion of reduced diameter connected to the remaining portion by an inclined surface, an annular chamber formed by said cylindrical portion of said outlet body and the reduced diameter portion of said valve housing, said annular chamber, valve housing bore and tubular portion being in fluid communication with each other.
Claim 5
Dependent Claim
39 words
The device according to claim 3 wherein said outlet body has an interior diameter less than the outer diameter of the remaining portion of said valve housing, said inclined surface serving to cam said outlet body open during assembly.
Claim 6
Independent Claim
188 words
A method for forming a fluid tight connection between the valve housing and outlet body of a two-piece crankcase vent valve at elevated temperatures which relies solely on said housing and outlet body to form said connection, comprising forming a bore in said outlet body, forming on said vent valve housing a locking ridge having an outer diameter larger than the diameter of said bore forming a straight knurled portion having an outer diameter larger than the diameter of said bore adjacent to but spaced from said locking ridge and forming adjacent said knurled portion an end portion of said housing of reduced diameter connected to the rest of the housing by an inclined surface and mounting said housing in said outlet body bore, said inclined surface serving to cam open said outlet body to receive said valve housing with said bore, said outlet body being plastically deformed on the interior of said bore only by said locking ridge and knurled portion and presenting a substantially smooth outer surface with substantially no deformation of its outer surface at least in the area of said ridge and knurled portion.
Claim 7
Independent Claim
188 words
A method for forming a fluid tight connection between the valve housing and outlet body of a two-piece crankcase vent valve at elevated temperatures which relies solely on said housing and outlet body to form said connection, comprising forming a bore in said outlet body, forming on said vent valve housing a locking ridge having an outer diameter larger than the diameter of said bore forming a straight knurled portion having an outer diameter larger than the diameter of said bore adjacent to but spaced from said locking ridge and forming adjacent said knurled portion an end portion of said housing of reduced diameter connected to the rest of the housing by an inclined surface and mounting said housing in said outlet body bore, said inclined surface serving to cam open said outlet body to receive said valve housing with said bore, said outlet body being plastically deformed on the interior of said bore only by said locking ridge and knurled portion and presenting a substantially smooth outer surface with substantially no deformation of its outer surface at least in the area of said ridge and knurled portion.
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) | 1974-07-19 | 1975-01-18 | 1975-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-19 | 1979-01-18 | 1979-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-19 | 1983-01-18 | 1983-07-20 | $7700.00 | Window Closed / Lapsed |