Patent US4336823A successfully refreshed from Google Patents.
US4336823A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solenoid valve
Assignee: Festo Maschinenfabrik Gottlieb Stoll Firma
•
Filing: 1980-03-12
•
Granted: 1982-06-29
•
Expires: 2000-03-12
Abstract
Abstract A solenoid valve having a valve body and a magnetic head with a chamber arranged between a pair of magnetic cores. A movable armature is provided in the chamber and has a sealing member movable therewith between open and closed positions relative to a passageway through one of the magnet cores. A spring is provided for biassing the armature and, accordingly, the associated sealing member toward one of the two positions thereof. The force of the magnetic field generated by the electrically energizable magnetic coil encircling the magnet cores is greater than the return force of the return spring.
Inventors
- 👤 Bruno F. Staiger
- 👤 Kurt Stoll
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 06:20
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/02; F16K31/06; F16K31/0603; F16K31/0624; F16K31/0627; F16K31/0606; Y; Y10; Y10T; Y10T137/00; Y10T137/5109; Y10T137/5196; Y10T137/8593; Y10T137/86493; Y10T137/86574; Y10T137/86622
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
275 words
A solenoid valve for use on a body having an inlet port and an outlet port, comprising: a pair of magnet cores axially spaced to define a chamber therebetween, one of said magnet cores having a pair of axially extending passageways therethrough each providing fluid communication between a respective one of said inlet and outlet ports and said chamber; an electrically energizable magnet coil encircling said pair of magnet cores, the magnetic field generated by the energization of said magnet coil passing across said chamber; valve means mounted in said chamber, said valve means including a magnetic armature reciprocably mounted in said chamber and being movable toward one of said magnet cores in response to an energization of said magnet coil, a sealing member and a return spring, said sealing member being secured for movement with said armature and being movable between first and second positions, said first position being a sealing engagement with the end of one of said passageways entering said chamber, said second position being spaced from said one end, said return spring biassing said sealing member into one of said first and second positions; spacer means supporting said valve means being removably mounted in said chamber; and means for providing access to said chamber to facilitate the removal of said spacer means and said valve means supported thereon therefrom so that said spacer means and said valve means can be turned over through 180° and reinserted into said chamber to thereby orient said sealing member at the other of said first and second positions, the magnetic force of said magnetic field sufficiently stronger than the return force of said return spring.
Claim 2
Dependent Claim
275 words
A solenoid valve for use on a body having an inlet port and an outlet port, comprising: a pair of magnet cores axially spaced to define a chamber therebetween, one of said magnet cores having a pair of axially extending passageways therethrough each providing fluid communication between a respective one of said inlet and outlet ports and said chamber; an electrically energizable magnet coil encircling said pair of magnet cores, the magnetic field generated by the energization of said magnet coil passing across said chamber; valve means mounted in said chamber, said valve means including a magnetic armature reciprocably mounted in said chamber and being movable toward one of said magnet cores in response to an energization of said magnet coil, a sealing member and a return spring, said sealing member being secured for movement with said armature and being movable between first and second positions, said first position being a sealing engagement with the end of one of said passageways entering said chamber, said second position being spaced from said one end, said return spring biassing said sealing member into one of said first and second positions; spacer means supporting said valve means being removably mounted in said chamber; and means for providing access to said chamber to facilitate the removal of said spacer means and said valve means supported thereon therefrom so that said spacer means and said valve means can be turned over through 180° and reinserted into said chamber to thereby orient said sealing member at the other of said first and second positions, the magnetic force of said magnetic field sufficiently stronger than the return force of said return spring.
Claim 3
Dependent Claim
21 words
A solenoid valve in accordance with claim 1, wherein said chamber is arranged in the axial center of said magnet coil.
Claim 4
Dependent Claim
40 words
A solenoid valve in accordance with claim 1 or 2, wherein the dimension of said chamber in the direction of movement of said armature is less than in the transverse direction, and said armature is designed as a flat disc.
Claim 5
Dependent Claim
31 words
A solenoid valve in accordance with claim 1, wherein said armature is cup-shaped and is mounted in spacer means which is arranged in peripheral recesses in both of said magnet cores.
Claim 6
Dependent Claim
23 words
A solenoid valve in accordance with claim 4, wherein said magnet cores having said peripheral recesses thereon are identical in their external shape.
Claim 7
Dependent Claim
43 words
A solenoid valve in accordance with claim 4, wherein said return spring is arranged in the cup space of said armature, said return spring having spring end sections formed thereon which are inserted into cutouts in the circular wall of said cup-shaped armature.
Claim 8
Dependent Claim
41 words
A solenoid valve in accordance with claim 6, wherein said free end sections of said return spring face one of said magnet cores, while a free rim of said circular wall of said armature faces the other of said magnet cores.
Claim 9
Dependent Claim
39 words
A solenoid valve in accordance with claim 6, wherein said spacer means is a guide bush having a bore extending over part of its length, which bore receives said circular wall of said armature and said spring end sections.
Claim 10
Dependent Claim
22 words
A solenoid valve in accordance with claim 1, wherein said sealing member is arranged in the cup space of said return spring.
Claim 11
Dependent Claim
66 words
A solenoid valve in accordance with claim 1, wherein said return spring is cup-shaped and has a base and a cylindrical wall segment which has height greater than the thickness of said armature, said wall segment being formed by bending over spring end sections of said base of said return spring at equally spaced intervals around the circumference of said base to define said spacer means.
Claim 12
Dependent Claim
32 words
A solenoid valve in accordance with claim 1, wherein said return spring has a base provided with spring webs interspersed with slots, said spring webs and said slots having a segmental shape.
Claim 13
Dependent Claim
17 words
A solenoid valve in accordance with claim 11, wherein said return spring is fixed to said armature.
Claim 14
Dependent Claim
24 words
A solenoid valve in accordance with claim 12, wherein a joint between said spring webs and said armature is formed by laser beam welding.
Claim 15
Dependent Claim
38 words
A solenoid valve in accordance with claim 1, wherein said return spring has a base, and wherein said sealing member is moulded into a central bore in said base and also into a central bore in said armature.
Claim 16
Dependent Claim
17 words
A solenoid valve in accordance with claim 1 or 2, wherein said armature is a flat disc.
Claim 17
Dependent Claim
69 words
A solenoid valve in accordance with claim 1, wherein said spacer means is a cylindrical ring and wherein said return spring is cup-shaped having a base and a cylindrical wall segment, said wall segment being secured to said ring on the inside thereof, said return spring having said armature and said sealing member mounted thereon and both thereof being movable against the spring return force of said return spring.
Claim 18
Dependent Claim
43 words
A solenoid valve in accordance with claim 1, wherein said sealing member is an elongated member having a pair of opposed ends located on opposite sides of said return spring and said armature, one of said ends being located juxtaposed said one passageway.
Claim 19
Dependent Claim
29 words
A solenoid valve is accordance with claim 1, including means defining a vent hole on a side of said chamber remote from said one passageway opening into said chamber.
References Cited (Backward Citations)
US3285285A
Cited
US3521854A
Cited
US3383084A
Cited
US3828818A
Cited
DE2303450A1
Cited
US3878859A
Cited
US3921670A
Cited
US4114648A
Cited
US4196751A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-06-28 | 1985-12-28 | 1986-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-06-28 | 1989-12-28 | 1990-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-06-28 | 1993-12-28 | 1994-06-29 | $7700.00 | Window Closed / Lapsed |