US3790127A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulic valve
Assignee: Vapor Corp
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Filing: 1972-11-03
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Granted: 1974-02-05
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Expires: 1992-11-03
Abstract
Abstract An intrinsically safe hydraulic valve including a first stage in the form of pilot valves and a second stage in the form of a poppet valve assembly. The poppet valve assembly includes first and second pairs of piston operated poppets which, when selectively operated, control the drive direction of a fluid motor. The pilot valves are electrically controlled through an electromagnet arrangement wherein the valves are closed when the electromagnet is de-energized and opened when it is energized. When the pilot valves are selectively opened, they apply a pilot pressure to one or the other of the pairs of piston operated poppets to drive the fluid motor.
Inventors
- 👤 R Reip
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 18:44
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/12; F15; F15B; F15B13/00; F15B13/02; F15B13/04; F15B13/042; F15B13/043; F15B13/0431; F16K31/02; F16K31/06; F16K31/0682; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/87169; Y10T137/87193; Y10T137/87209
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
216 words
An electromagnetic valve for controlling high pressure fluid flow in a line comprising a casing having an inlet for connection to a supply of high pressure fluid and an outlet for connection to a device to be driven by said supply, a coil within said casing, a pair of pole pieces within said coil in spaced relation to define an air gap therebetween, an armature within said coil extending across said air gap and coacting with both pole pieces, means pivotally mounting one end of the armature at one of said pole pieces wherein the armature swings relative the pole pieces, means extending from said one end of said armature defining a closure member, port means coacting with said closure member communicating with said outlet, and means communicating said inlet with said closure member, said inlet receiving supply pressure whereby said closure member is spaced from the port means to open same and intercommunicate the inlet and outlet when the coil is energized and the armature seated on the pole pieces, and the closure member is seated on the port means to close same when the coil is de-energized, wherein the relation between the closure member and port means is such that the supply pressure forces the closure member into seated position on the port means.
Claim 2
Dependent Claim
216 words
An electromagnetic valve for controlling high pressure fluid flow in a line comprising a casing having an inlet for connection to a supply of high pressure fluid and an outlet for connection to a device to be driven by said supply, a coil within said casing, a pair of pole pieces within said coil in spaced relation to define an air gap therebetween, an armature within said coil extending across said air gap and coacting with both pole pieces, means pivotally mounting one end of the armature at one of said pole pieces wherein the armature swings relative the pole pieces, means extending from said one end of said armature defining a closure member, port means coacting with said closure member communicating with said outlet, and means communicating said inlet with said closure member, said inlet receiving supply pressure whereby said closure member is spaced from the port means to open same and intercommunicate the inlet and outlet when the coil is energized and the armature seated on the pole pieces, and the closure member is seated on the port means to close same when the coil is de-energized, wherein the relation between the closure member and port means is such that the supply pressure forces the closure member into seated position on the port means.
Claim 3
Dependent Claim
17 words
The valve defined by claim 1, wherein said pole pieces are formed to partially surround said armature.
Claim 4
Dependent Claim
23 words
The valve defined by claim 1, wherein means is provided to continually communicate the supply with all sides of said pivotal mounting means.
Claim 5
Dependent Claim
20 words
The valve defined by claim 1, wherein means is provided to normally bias said armature away from said pole pieces.
Claim 6
Dependent Claim
17 words
The valve defined in cLaim 1, wherein said pivotal mounting means includes a ball and socket arrangement.
Claim 7
Dependent Claim
152 words
An electromagnetic valve for controlling fluid flow in a high pressure fluid line comprising, a magnetic tubular casing, opposed magnetic end plates at each end of the casing closing the ends, a coil within the casing between the end plates, first and second spaced magnetic pole pieces within the coil and against the end plates, a non-magnetic section within the coil and between the pole pieces, a magnetic armature within the coil extending across said non-magnetic section and coacting with both said pole pieces, means pivotally mounting said armature at one end to one of the pole pieces, an extension on the armature, port means coacting with said extension, inlet means communicating with one side of said port means and outlet means communicating with the other side of the port means, said extension closing the port means when the coil is de-energized and opening the port means when the coil is energized.
Claim 8
Dependent Claim
152 words
An electromagnetic valve for controlling fluid flow in a high pressure fluid line comprising, a magnetic tubular casing, opposed magnetic end plates at each end of the casing closing the ends, a coil within the casing between the end plates, first and second spaced magnetic pole pieces within the coil and against the end plates, a non-magnetic section within the coil and between the pole pieces, a magnetic armature within the coil extending across said non-magnetic section and coacting with both said pole pieces, means pivotally mounting said armature at one end to one of the pole pieces, an extension on the armature, port means coacting with said extension, inlet means communicating with one side of said port means and outlet means communicating with the other side of the port means, said extension closing the port means when the coil is de-energized and opening the port means when the coil is energized.
Claim 9
Dependent Claim
177 words
An electromagnetic valve for use in hydraulic circuits to control the flow of high pressure fluid in a line, said valve comprising a casing having an inlet connected to supply pressure and an outlet, a coil within the casing, a pair of pole pieces in spaced relation and within said coil, an armature within the coil coacting with the pole pieces to complete the magnetic circuit therebetween when in seated position thereagainst, a ball portion on one end of the armature, a socket at a pole piece pivotally receiving the ball portion thereby pivotally mounting the armature, a generally cylindrical closure member extending from the ball portion, an annular land surrounding the closure member and having a port therein defining a valve seat, means communicating the port with the outlet, means communicating the land and closure member with the inlet, the relation between the land and closure member being such that the pressure drop due to fluid flow between the closure member and valve seat forces the closure member against the seat when the coil is de-energized.
Claim 10
Dependent Claim
177 words
An electromagnetic valve for use in hydraulic circuits to control the flow of high pressure fluid in a line, said valve comprising a casing having an inlet connected to supply pressure and an outlet, a coil within the casing, a pair of pole pieces in spaced relation and within said coil, an armature within the coil coacting with the pole pieces to complete the magnetic circuit therebetween when in seated position thereagainst, a ball portion on one end of the armature, a socket at a pole piece pivotally receiving the ball portion thereby pivotally mounting the armature, a generally cylindrical closure member extending from the ball portion, an annular land surrounding the closure member and having a port therein defining a valve seat, means communicating the port with the outlet, means communicating the land and closure member with the inlet, the relation between the land and closure member being such that the pressure drop due to fluid flow between the closure member and valve seat forces the closure member against the seat when the coil is de-energized.
Claim 11
Dependent Claim
19 words
The valve as defined in claim 7, and spring means normally urging said armature away from said pole pieces.
Claim 12
Dependent Claim
23 words
The valve as defined in claim 8, and means for continually communicating the armature end of the ball portion to the supply pressure.
Claim 13
Dependent Claim
16 words
The valve as defined in claim 9, wherein the closure member is coaxial with the armature.
Claim 14
Dependent Claim
14 words
The valve as defined in claim 10, wherein the closure member is slightly tapered.
Claim 15
Dependent Claim
157 words
An electromagnetic valve for controlling fluid flow in a high pressure fluid line comprising, a magnetic tubular casing, opposed magnetic end plates at each end of the casing closing the ends, a coil within the casing between the end plates, first and second spaced magnetic pole pieces within the coil and against the end plates, a non-magnetic section within the coil and between the pole pieces, a magnetic armature within the coil extending across said non-magnetic section and coacting with both said pole pieces and movable substantially perpendicular to the axis of the coil, a closure member on the armature, port means coacting with said closure member, inlet means communicating with one side of said port means and outlet means communicating with the other side of the port means, means mounting said armature so that said closure member closes said port means when the coil is de-energized and opens the port means when the coil is energized.
Claim 16
Dependent Claim
157 words
An electromagnetic valve for controlling fluid flow in a high pressure fluid line comprising, a magnetic tubular casing, opposed magnetic end plates at each end of the casing closing the ends, a coil within the casing between the end plates, first and second spaced magnetic pole pieces within the coil and against the end plates, a non-magnetic section within the coil and between the pole pieces, a magnetic armature within the coil extending across said non-magnetic section and coacting with both said pole pieces and movable substantially perpendicular to the axis of the coil, a closure member on the armature, port means coacting with said closure member, inlet means communicating with one side of said port means and outlet means communicating with the other side of the port means, means mounting said armature so that said closure member closes said port means when the coil is de-energized and opens the port means when the coil is energized.
Claim 17
Dependent Claim
24 words
An electromagnetic valve as defined in claim 12, wherein the inlet and outlet means are arranged at one of the ends of the casing.
References Cited (Backward Citations)
US2635138A
Cited
US2850685A
Cited
US2926691A
Cited
US2863473A
Cited
US2964286A
Cited
US3215162A
Cited
US3246662A
Cited
US3570807A
Cited
US3532121A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-02-04 | 1977-08-06 | 1978-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-04 | 1981-08-06 | 1982-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-04 | 1985-08-06 | 1986-02-05 | $7700.00 | Window Closed / Lapsed |