US3873060A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electromagnetic pressure regulator
Assignee: Robert Bosch GmbH
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Filing: 1972-05-24
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Granted: 1975-03-25
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Expires: 1992-05-24
Abstract
Abstract A pressure regulator in which the pressure is regulated as a function of electrical signals applied to an electromagnet. The armature of the electromagnet actuates a membrane which has one side subjected to the pressure to be regulated. Two passages have their connections controlled by the membrane which closes one of the two passages in operation. The armature is guided by an elastic element whereby substantially little friction is encountered.
Inventors
- 👤 Helmut Espenschied
- 👤 Wolfgang Gauss
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:28
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/02; F16K31/06; F16K31/0644; F16K31/0655; F16H; F16H61/00; F16H61/02; F16H61/0202; F16H61/0251; G; G05; G05D; G05D16/00; G05D16/20; G05D16/2093; G05D16/2095; H; H01; H01F; H01F7/00; H01F7/06; H01F7/08; H01F7/16; H01F7/1638
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
262 words
A pressure regulator for regulating the pressure in a hydraulic circuit, comprising, in combination, a valve housing having an interior bounded by an interior wall and two ports opening into said interior of said valve housing and being bounded by surface portions of said interior wall, the surface portion bounding at least one of said ports constituting a valve seat; elastic separating means comprising an elastic separating diaphragm mounted in said interior of said valve housing and dividing said interior of said valve housing into a first chamber and a second chamber located on opposite sides of said elastic diaphragm, said ports opening into said first chamber, and said separating means being a continuous unbroken separating means completely preventing flow of fluid out of said first chamber into said second chamber; an armature located in said second chamber; mounting means mounting said armature for movement from a first position in which said armature presses said elastic separating means into sealing contact with said valve seat, thereby preventing fluid communication between said ports, to a second position in which said armature does not press said elastic separating means into sealing contact with said valve seat, thereby permitting fluid communication between said ports; and electromagnetic means mounted on said housing and operative when energized for moving said armature from one to the other of said positions thereof, said mounting means comprising a further elastic diaphragm constituting an elastic mounting diaphragm mounted in said interior of said valve housing and furthermore supporting and guiding said armature for movement between said first and second positions thereof.
Claim 2
Dependent Claim
262 words
A pressure regulator for regulating the pressure in a hydraulic circuit, comprising, in combination, a valve housing having an interior bounded by an interior wall and two ports opening into said interior of said valve housing and being bounded by surface portions of said interior wall, the surface portion bounding at least one of said ports constituting a valve seat; elastic separating means comprising an elastic separating diaphragm mounted in said interior of said valve housing and dividing said interior of said valve housing into a first chamber and a second chamber located on opposite sides of said elastic diaphragm, said ports opening into said first chamber, and said separating means being a continuous unbroken separating means completely preventing flow of fluid out of said first chamber into said second chamber; an armature located in said second chamber; mounting means mounting said armature for movement from a first position in which said armature presses said elastic separating means into sealing contact with said valve seat, thereby preventing fluid communication between said ports, to a second position in which said armature does not press said elastic separating means into sealing contact with said valve seat, thereby permitting fluid communication between said ports; and electromagnetic means mounted on said housing and operative when energized for moving said armature from one to the other of said positions thereof, said mounting means comprising a further elastic diaphragm constituting an elastic mounting diaphragm mounted in said interior of said valve housing and furthermore supporting and guiding said armature for movement between said first and second positions thereof.
Claim 3
Dependent Claim
27 words
A pressure regulator as defined in claim 1, wherein said further elastic diaphragm is generally planar and oriented transverse to the path of movement of said armature.
Claim 4
Dependent Claim
26 words
A pressure regulator as defined in claim 1, wherein said armature is supported intermediate said first and second positions thereof exclusively by said further elastic diaphragm.
Claim 5
Dependent Claim
30 words
A pressure regulator as defined in claim 1, wherein the centers of said separating diaphragm, of said mounting diaphragm, of said armature and of said valve seat aRe in alignment.
Claim 6
Dependent Claim
40 words
A pressure regulator as defined in claim 4, wherein said valve housing has a removable part provided with a surface constituting said valve seat and provided with a nozzle passage constituting at least part of said one of said ports.
Claim 7
Dependent Claim
47 words
A pressure regulator as defined in claim 1, wherein said electromagnetic means is located in said second chamber, whereby fluid flowing into said first chamber through the other of said ports cannot flow past said elastic separating means to reach said electromagnetic means in said second chamber.
Claim 8
Dependent Claim
63 words
A pressure regulator as defined in claim 1, wherein said electromagnetic means comprises means operative for causing said armature to move said separating means closer to and farther from said valve seat in dependence upon the energization of said electromagnetic means to establish a substantially proportional relationship between the pressure of fluid in said first chamber and the energization of said electromagnetic means.
Claim 9
Dependent Claim
86 words
A pressure regulator as defined in claim 1, wherein said valve housing comprises a cylindrical portion provided at one end face thereof with an annular radially outwardly extending flange portion, said two ports each passing through said cylindrical portion and having respective first ends located in the plane of said one end face and having respective second ends located at the other end face of said cylindrical portion, said first chamber being defined by said separating means and said other end face of said cylindrical portion.
Claim 10
Dependent Claim
32 words
A pressure regulator as defined in claim 1, wherein said valve housing is comprised of two adjoining portions having facing surfaces between which is clamped the peripheral portion of said mounting diaphragm.
Claim 11
Dependent Claim
33 words
A pressure regulator as defined in claim 1, wherein said valve housing is comprised of two adjoining portions having facing surfaces between which is clamped the peripheral portion of said elastic separating diaphragm.
Claim 12
Dependent Claim
33 words
A pressure regulator as defined in claim 1, wherein said armature is comprised of two armature sections, and wherein the peripheral portion of said mounting diaphragm is sandwiched between said two armature sections.
Claim 13
Dependent Claim
75 words
A pressure regulator as defined in claim 1, and further including biasing spring means for normally urging said armature towards said first position thereof, and wherein said electromagnetic means comprises means operative for moving said armature towards said second position thereof to an extent dependent upon the energization of said electromagnetic means to establish a substantially inversely proportional relationship between the pressure of fluid in said first chamber and the energization of said electromagnetic means.
Claim 14
Dependent Claim
103 words
A pressure regulator as defined in claim 12, wherein said electromagnetic means comprises an annular cylindrical electromagnet and wherein said biasing means comprises a spring positioned in the interior of said annular cylindrical electromagnet and biasing said armature towards said first position thereof, both said electromagnet and said spring being located on the side of said separating diaphragm opposite the side of said separating diaphragm which faces said first chamber, and wherein said valve housing includes a housing portion located on the side of said separating diaphragm facing said first chamber and wherein such housing portion contains two passageways consituting said two ports.
Claim 15
Dependent Claim
110 words
A pressure regulator as defined in claim 1, wherein said valve housing is comprised of a first portion and a second portion having respective facing surfaces, and wherein the peripheral portion of said separating diaphragm is clamped between said facing surfaces, and wherein said valve housing is further comprised of a third portion, said second and third portions having respective facing surfaces, and wherein the peripheral portion of said mounting diaphragm is clamped between said facing surfaces of said second and third portions, and wherein said electromagnetic means comprises an aNnular electromagnet located in said second chamber, with said mounting diaphragm being positioned intermediate said electromagnet and said separating diaphragm.
Claim 16
Dependent Claim
60 words
A pressure regulator as defined in claim 1, wherein said armature is movable into contact with a portion of the surface of said separating means for pressing the latter against said valve seat but wherein said armature and said separating means are not fixedly connected to each at the contacting surface portion of said armature and of said separating means.
Claim 17
Dependent Claim
264 words
A pressure regulator for regulating the pressure in a hydraulic circuit, comprising, in combination, a valve housing having an interior bounded by an interior wall and two ports opening into said interior of said valve housing and being bounded by surface portions of said interior wall, the surface portion bounding at least one of said ports constituting a valve seat; elastic separating means comprising an elastic separating diaphragm mounted in said interior of said valve housing and dividing said interior of said valve housing into a first chamber and a second chamber located on opposite sides of said elastic diaphragm, said ports opening into said first chamber, and said separating means being a continuous unbroken separating means completely preventing flow of fluid out of said first chamber into said second chamber; an armature located in said second chamber; mounting means mounting said armature for movement from a first position in which said armature presses said elastic separating means into sealing contact with said valve seat, thereby preventing fluid communication between said ports, to a second position in which said armature does not press said elastic separating means into sealing contact with said valve seat, thereby permitting fluid communication between said ports; and electromagnetic means mounted on said housing and operative when energized for moving said armature from one to the other of said positions thereof, said electromagnetic means comprising an annular electromagnet and wherein said armature comprises a plate of magnetically conductive material positioned in proximity to one axial end of said annular electromagnet to form with such axial end an annular air gap.
Claim 18
Dependent Claim
264 words
A pressure regulator for regulating the pressure in a hydraulic circuit, comprising, in combination, a valve housing having an interior bounded by an interior wall and two ports opening into said interior of said valve housing and being bounded by surface portions of said interior wall, the surface portion bounding at least one of said ports constituting a valve seat; elastic separating means comprising an elastic separating diaphragm mounted in said interior of said valve housing and dividing said interior of said valve housing into a first chamber and a second chamber located on opposite sides of said elastic diaphragm, said ports opening into said first chamber, and said separating means being a continuous unbroken separating means completely preventing flow of fluid out of said first chamber into said second chamber; an armature located in said second chamber; mounting means mounting said armature for movement from a first position in which said armature presses said elastic separating means into sealing contact with said valve seat, thereby preventing fluid communication between said ports, to a second position in which said armature does not press said elastic separating means into sealing contact with said valve seat, thereby permitting fluid communication between said ports; and electromagnetic means mounted on said housing and operative when energized for moving said armature from one to the other of said positions thereof, said electromagnetic means comprising an annular electromagnet and wherein said armature comprises a plate of magnetically conductive material positioned in proximity to one axial end of said annular electromagnet to form with such axial end an annular air gap.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-03-24 | 1978-09-23 | 1979-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-24 | 1982-09-23 | 1983-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-24 | 1986-09-23 | 1987-03-25 | $7700.00 | Window Closed / Lapsed |