US4947887A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Proportional solenoid valve
Assignee: BorgWarner Automotive Electronic and Mechanical Systems Corp
•
Filing: 1989-09-25
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Granted: 1990-08-14
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Expires: 2009-09-25
Abstract
Abstract A diaphragm operated valve assembly is controlled by an electromagnetic valve assembly. A flat disc armature, which forms part of a flux path, is operable in an inner chamber to modulate the flow between the inner chamber and an exit port in response to an applied magnetic force. The level of the effective magnetic force is a function of the armature mass, and the pressure acting on the disc surface. A pole piece adjacent to the flat disc armature is slidably adjustable to establish a specified force to actuate the armature to the closed or sealing position. This specified force is proportional to the current flow through the winding of the electromagnetic valve assembly. Thus the armature operates to seal communication between the inner chamber and the exit port at a given pressure differential as a function of current flow. The travel distance between the armature and a nonmagnetic seal seat has been minimized by spring biasing the armature in proximity to the seal seat.
Inventors
- 👤 Clarence D. Fox
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:38
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/12; F16K31/36; F16K31/40; F16K31/402; G; G05; G05D; G05D16/00; G05D16/20; G05D16/2093; G05D16/2095; Y; Y10; Y10S; Y10S137/00; Y10S137/907; Y10T; Y10T137/00; Y10T137/2278; Y10T137/8593; Y10T137/86493; Y10T137/86574; Y10T137/86582; Y10T137/8659; Y10T137/86614
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
305 words
A method of manufacturing a proportional electromechanical valve having an electrical winding with a central flux axis, a plurality of magnetic segments one of which is a generally cylindrical segment, an end segment, an annular non-magnetic seat member, a magnetic closure means, and a housing means defining a fluid chamber, in which the relative pressure within said fluid chamber bears a known, fixed relationship to the flux in said electrical winding, comprising the steps of: assembling the magnetic segments to form a magnetic flux circuit, said generally cylindrical segment defining a fluid passage aligned with said flux axis; positioning said non-magnetic seat member near one end of said generally cylindrical segment whereby a central opening for said fluid passage is defined; positioning said magnetic closure means adjacent said central opening for movement relative to said fluid passage; enclosing said central opening and said closure means with said housing means to define a fluid path between the other end of said cylindrical segment and said fluid chamber, said housing means including means defining a cylindrical guide adjacent said non-magnetic seat member to receive said magnetic closure means and to constrain the motion thereof substantially parallel to the longitudinal axis of said fluid passage between a position against said annular non-magnetic seat member and a position displaced therefrom; mounting at least one of said magnetic segments for translation with respect to an adjacent segment to adjust the extent of an air gap between the translatable segment and the adjacent segment; applying a predetermined electrical signal to said electrical winding; making a pressure available at said other end of said cylindrical segment which is positive relative to the pressure in said chamber; and translating the movable segment to alter said air gap and to produce a desired relative pressure in said fluid chamber for said predetermined electrical signal.
Claim 2
Independent Claim
305 words
A method of manufacturing a proportional electromechanical valve having an electrical winding with a central flux axis, a plurality of magnetic segments one of which is a generally cylindrical segment, an end segment, an annular non-magnetic seat member, a magnetic closure means, and a housing means defining a fluid chamber, in which the relative pressure within said fluid chamber bears a known, fixed relationship to the flux in said electrical winding, comprising the steps of: assembling the magnetic segments to form a magnetic flux circuit, said generally cylindrical segment defining a fluid passage aligned with said flux axis; positioning said non-magnetic seat member near one end of said generally cylindrical segment whereby a central opening for said fluid passage is defined; positioning said magnetic closure means adjacent said central opening for movement relative to said fluid passage; enclosing said central opening and said closure means with said housing means to define a fluid path between the other end of said cylindrical segment and said fluid chamber, said housing means including means defining a cylindrical guide adjacent said non-magnetic seat member to receive said magnetic closure means and to constrain the motion thereof substantially parallel to the longitudinal axis of said fluid passage between a position against said annular non-magnetic seat member and a position displaced therefrom; mounting at least one of said magnetic segments for translation with respect to an adjacent segment to adjust the extent of an air gap between the translatable segment and the adjacent segment; applying a predetermined electrical signal to said electrical winding; making a pressure available at said other end of said cylindrical segment which is positive relative to the pressure in said chamber; and translating the movable segment to alter said air gap and to produce a desired relative pressure in said fluid chamber for said predetermined electrical signal.
Claim 3
Dependent Claim
21 words
The method of claim 1 wherein said translatable segment is translated relative to said seat member to alter the air gap.
Claim 4
Dependent Claim
36 words
The method of claim 1 including the step of securing said translatable segment relative to the adjacent segment to fix said air gap and to fix the relationship between the applied signal and the differential pressure.
Claim 5
Dependent Claim
19 words
The method of claim 1 wherein at least some of said magnetic segments and the electrical winding are encapsulated.
Claim 6
Dependent Claim
20 words
The method of claim 3 wherein said securing step comprises welding said translatable segment in place relative to the housing.
References Cited (Backward Citations)
US850738A
Cited
US1053340A
Cited
US2169683A
Cited
US2267515A
Cited
US2840769A
Cited
US2860850A
Cited
US2947284A
Cited
US3136220A
Cited
US3219095A
Cited
US3185779A
Cited
DE1285270B
Cited
US3433256A
Cited
US3429340A
Cited
GB1179719A
Cited
US3529620A
Cited
US3521854A
Cited
US3498330A
Cited
US3545472A
Cited
US3534770A
Cited
DE1941553A1
Cited
US3628767A
Cited
DE1806040A1
Cited
US3586287A
Cited
US3688495A
Cited
US3873060A
Cited
US3817488A
Cited
US3961644A
Cited
US3861643A
Cited
US3861644A
Cited
US3982554A
Cited
US4005733A
Cited
US4120214A
Cited
US4304391A
Cited
US4196751A
Cited
US4285603A
Cited
US4299374A
Cited
US4258749A
Cited
US4251052A
Cited
US4337794A
Cited
GB2064720A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-08-13 | 1994-02-12 | 1994-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-08-13 | 1998-02-12 | 1998-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-08-13 | 2002-02-12 | 2002-08-14 | $7700.00 | Window Closed / Lapsed |