US3598360A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solenoid valve
Assignee: Wells Fargo Bank NA
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Filing: 1969-08-27
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Granted: 1971-08-10
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Expires: 1989-08-27
Abstract
Abstract An improved solenoid valve is provided which is encapsulated in a thermosetting plastic to minimize the corrosive action of soil, fertilizers, or chemicals, when the valve is used, for example, in conjunction with a lawn sprinkling system, or the like. The solenoid valve is constructed to be encased in a molded thermosetting plastic housing, and which is formed to eliminate air voids around the energizing coil of the solenoid and which would have a tendency to produce a wicking action with resulting short circuiting of the coil. The solenoid valve also is constructed to minimize electrolytic action with its resultant deteriorating effects; this being achieved by maintaining similar metals throughout the structure, and by using epoxy adhesive, rather than soldered or brazed connections, to hold various components of the assembly together.
Inventors
- 👤 Delbert L Merriner
- 👤 Woodrow W Miller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:17
CPC Classifications
H; H01; H01F; H01F7/00; H01F7/06; H01F7/08; H01F7/16; H01F7/1607
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
110 words
A solenoid assembly including: an elongated rodlike central core section; a sleeve surrounding said core section and adhesively attached to said core section and having an end portion extending axially beyond one end of said core section; an electric energizing coil supported on said sleeve in coaxial relationship therewith; a shell of magnetizable material mounted coaxially on said sleeve and having an annular side wall surrounding said sleeve and having a base through which said sleeve extends; and a plastic housing molded to the portion of said sleeve protruding through said base, and to said shell and electric coil, and encompassing both the inner and outer surfaces of said shell.
Claim 2
Dependent Claim
110 words
A solenoid assembly including: an elongated rodlike central core section; a sleeve surrounding said core section and adhesively attached to said core section and having an end portion extending axially beyond one end of said core section; an electric energizing coil supported on said sleeve in coaxial relationship therewith; a shell of magnetizable material mounted coaxially on said sleeve and having an annular side wall surrounding said sleeve and having a base through which said sleeve extends; and a plastic housing molded to the portion of said sleeve protruding through said base, and to said shell and electric coil, and encompassing both the inner and outer surfaces of said shell.
Claim 3
Dependent Claim
129 words
A solenoid assembly including: an elongated rodlike central core section; a sleeve surrounding said core section and having an end portion extending axially beyond one end of said core section; an electric energizing coil supported on said sleeve in coaxial relationship therewith; a shell of magnetizable material mounted coaxially on said sleeve and having an annular sidewall surrounding said sleeve and having a base through which said sleeve extends; a plastic housing molded to the portion of said sleeve protruding through said base, and to said shell and electric coil, and encompassing both the inner and outer surfaces of said shell; a washer of magnetizable material swaged against said core section and mounted coaxially with said core section and enclosing the end of said shell remote from said base.
Claim 4
Dependent Claim
129 words
A solenoid assembly including: an elongated rodlike central core section; a sleeve surrounding said core section and having an end portion extending axially beyond one end of said core section; an electric energizing coil supported on said sleeve in coaxial relationship therewith; a shell of magnetizable material mounted coaxially on said sleeve and having an annular sidewall surrounding said sleeve and having a base through which said sleeve extends; a plastic housing molded to the portion of said sleeve protruding through said base, and to said shell and electric coil, and encompassing both the inner and outer surfaces of said shell; a washer of magnetizable material swaged against said core section and mounted coaxially with said core section and enclosing the end of said shell remote from said base.
Claim 5
Dependent Claim
23 words
The solenoid assembly defined in claim 2 in which said core, said sleeve, said shell and said washer are all formed of steel.
Claim 6
Dependent Claim
33 words
The solenoid assembly defined in claim 1 in which said central core section includes an annular slot at one end thereof; and a shading ring of electrically conductive material mounted in said slot.
Claim 7
Dependent Claim
23 words
The solenoid assembly defined in claim 1 in which the end of said sleeve extending axially beyond said core section is flared outwardly.
Claim 8
Dependent Claim
40 words
The solenoid assembly defined in claim 1 and which includes a plunger mounted in said axially extending end of said sleeve for axial movement therein, and spring means surrounding said plunger for biasing said plunger axially out of said sleeve.
Claim 9
Dependent Claim
24 words
The combination defined in claim 6 and which includes a resiLient valve member mounted in the extremity of said plunger remote from said sleeve.
Claim 10
Dependent Claim
117 words
A solenoid assembly including: an elongated rodlike central core section; a sleeve surrounding said core section and having an end portion extending axially beyond one end of said core section; an electric energizing coil supported on said sleeve in coaxial relationship therewith; a shell of magnetizable material mounted coaxially on said sleeve and having an annular sidewall surrounding said sleeve and having a base, the base of said shell having a central opening therein through which said sleeve extends, said central opening being pierced to form an axially extending skirt portion extending around said sleeve and engagement therewith to increase the surface contact between said shell and said sleeve and enhance the magnetic properties of the assembly.
Claim 11
Dependent Claim
117 words
A solenoid assembly including: an elongated rodlike central core section; a sleeve surrounding said core section and having an end portion extending axially beyond one end of said core section; an electric energizing coil supported on said sleeve in coaxial relationship therewith; a shell of magnetizable material mounted coaxially on said sleeve and having an annular sidewall surrounding said sleeve and having a base, the base of said shell having a central opening therein through which said sleeve extends, said central opening being pierced to form an axially extending skirt portion extending around said sleeve and engagement therewith to increase the surface contact between said shell and said sleeve and enhance the magnetic properties of the assembly.
Claim 12
Dependent Claim
50 words
The solenoid assembly defined in claim 7 in which said plunger and said core section form a chamber within said sleeve, said plunger having a passageway extending therethrough for permitting fluid to flow into said chamber so as to force said plunger in a direction away from said core section.
Claim 13
Dependent Claim
43 words
The solenoid assembly defined in claim 2 in which said washer and the base of said shell have apertures therein to permit the plastic material forming said plastic housing to flow into the interior of said shell during the fabrication of said assembly.
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) | 1974-08-09 | 1975-02-08 | 1975-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-09 | 1979-02-08 | 1979-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-09 | 1983-02-08 | 1983-08-10 | $7700.00 | Window Closed / Lapsed |