Patent US1475692A successfully refreshed from Google Patents.
Patent US3737141A successfully refreshed from Google Patents.
US3737141A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Normally closed solenoid operated valve
Assignee: Bayer AG
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Filing: 1972-04-13
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Granted: 1973-06-05
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Expires: 1992-04-13
Abstract
Abstract A normally closed solenoid operated poppet valve having an armature with a section which engages and pulls the poppet out of an orifice to control fluid flow. A pole piece surface forms a first air gap with the armature and a second air gap with the poppet when the valve is in its normally closed state. The second air gap is substantially greater in magnitude than the first air gap. Upon application of electromagnetic flux lines there is an attractive force between the armature and the pole piece attracting the armature and pulling the poppet to a partially open position. Thereafter, the attractive force between the poppet and pole piece attracts the poppet away from the orifice to the valve open state.
Inventors
- 👤 K Zeuner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 11:06
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/02; F16K31/06; F16K31/0644; F16K31/0655
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
185 words
A normally closed solenoid operated valve assembly comprising an orifice for controlling flow of fluid, plug means movable between a valve normally closed state seating in and closing said orifice and a valve open state, an armature having a section for engaging and pulling said plug means when said armature moves a predetermined distance, pole piece means having a surface spaced from and forming a predetermined first air gap with said armature and a predetermined second air gap with said plug means when said valve is in said normally closed state, said second air gap being of magnitude substantially greater than that Of said first air gap, and means operable to produce a circuit of electromagnetic flux line flow for providing (1) an attractive force between said armature and said pole piece means of sufficient magnitude to attract said armature thereby pulling said plug means away from said orifice to a partially open position and (2) an attractive force between said plug means and said pole piece means of sufficient magnitude to attract said plug means away from said orifice to said valve open state.
Claim 2
Dependent Claim
185 words
A normally closed solenoid operated valve assembly comprising an orifice for controlling flow of fluid, plug means movable between a valve normally closed state seating in and closing said orifice and a valve open state, an armature having a section for engaging and pulling said plug means when said armature moves a predetermined distance, pole piece means having a surface spaced from and forming a predetermined first air gap with said armature and a predetermined second air gap with said plug means when said valve is in said normally closed state, said second air gap being of magnitude substantially greater than that Of said first air gap, and means operable to produce a circuit of electromagnetic flux line flow for providing (1) an attractive force between said armature and said pole piece means of sufficient magnitude to attract said armature thereby pulling said plug means away from said orifice to a partially open position and (2) an attractive force between said plug means and said pole piece means of sufficient magnitude to attract said plug means away from said orifice to said valve open state.
Claim 3
Dependent Claim
56 words
The valve assembly of claim 1 in which said operable means produces said flux line flow of value, when said valve is in said closed state, for providing said attractive force of sufficient magnitude to attract said armature but of insufficient magnitude to attract said plug means away from said orifice to said valve open state.
Claim 4
Dependent Claim
55 words
The valve assembly of claim 1 in which said operable means includes an electromagnet for producing a circuit of electromagnetic flux line flow through said pole piece means, said first and second air gap, said armature and said plug means and means for energizing said electromagnet for operating said valve to said valve open state.
Claim 5
Dependent Claim
92 words
The valve assembly of claim 3 in which said energizing means comprises a circuit operable for providing a first lower valued voltage and a second higher valued voltage, said first voltage being of sufficient magnitude to produce said attractive force to attract said armature but insufficient to attract said plug means thereby to only actuate said valve to said partially open position, said second voltage being of sufficient magnitude to produce said attractive force of sufficient magnitude to attract said plug means thereby to actuate said valve to said valve open state.
Claim 6
Dependent Claim
53 words
The valve assembly of claim 1 in which there is provided a housing for said armature and said plug means, said housing being a very high magnetically permeable material except in the area generally adjacent said air gaps whereby said flux lines flow through said housing and provide a concentration of flux lines.
Claim 7
Dependent Claim
51 words
The valve assembly of claim 1 in which said armature includes a chamber for slideably receiving said plug means, said plug means includes a guide portion for slideable contact with said chamber and for engagement by said armature section, and said second air gap being disposed within said first air gap.
Claim 8
Dependent Claim
39 words
The valve assembly of claim 6 in which there is provided biasing means secured between said guide portion of said plug means and pole piece means to overcome the frictional force and the mass effect of said plug means.
Claim 9
Dependent Claim
79 words
The valve assembly of claim 7 in which said plug means comprises a poppet having said guide portion, a portion terminating in a valve plug and an extension, said guide portion having side walls which contact said chamber of said armature and are dimensioned to provide alignment of said valve plug into and out of said orifice, said extension extending from said guide portion and terminating in a surface forming said second air gap with said pole piece means.
Claim 10
Dependent Claim
69 words
The valve assembly of claim 1 in which there is provided a predetermined value space between said armature section and the portion of said plug means engaged by said armature section, said second air gap having a distance value at the time said orifice is partially open substantially equal to the value of said first air gap minus said space when said valve is in said normally closed state.
References Cited (Backward Citations)
US2405906A
Cited
US3381932A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-06-04 | 1976-12-04 | 1977-06-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-04 | 1980-12-04 | 1981-06-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-04 | 1984-12-04 | 1985-06-05 | $7700.00 | Window Closed / Lapsed |