US3707982A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Snap action pneumatic relay
Assignee: Honeywell Inc
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Filing: 1971-09-23
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Granted: 1973-01-02
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Expires: 1991-09-23
Abstract
Abstract A miniature pneumatic snap action relay having a bistable snap disc arranged to interconnect first and second sets of two ports when in one stable position and to interconnect third and fourth sets of two ports when in the other stable position.
Inventors
- 👤 J Hogel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:45
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/44; F16K31/56; F16K31/566; F15; F15B; F15B13/00; F15C; F15C3/00; F15C3/04; F16K11/00; F16K11/02; F16K11/022; Y; Y10; Y10T; Y10T137/00; Y10T137/2278; Y10T137/2496; Y10T137/2559; Y10T137/2564; Y10T137/2567; Y10T137/265; Y10T137/2668; Y10T137/2693; Y10T137/7722; Y10T137/7837; Y10T137/7866; Y10T137/7867; Y10T137/7868
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
110 words
Fluid switching apparatus comprising: housing means having a cavity therein; diaphragm means dividing the cavity into first and second pressure chambers; force responsive means associated with the diaphragm means, the force responsive means having an over center snap action and having first and second stable positions; first and second ports in communication with the first and second pressure chambers respectively; first and second nozzle means disposed within the first pressure chamber; the force responsive means arranged to allow the first and second nozzle means to communicate when in its first stable position, and to allow the first port and second nozzle means to communicate when in its second stable position.
Claim 2
Dependent Claim
110 words
Fluid switching apparatus comprising: housing means having a cavity therein; diaphragm means dividing the cavity into first and second pressure chambers; force responsive means associated with the diaphragm means, the force responsive means having an over center snap action and having first and second stable positions; first and second ports in communication with the first and second pressure chambers respectively; first and second nozzle means disposed within the first pressure chamber; the force responsive means arranged to allow the first and second nozzle means to communicate when in its first stable position, and to allow the first port and second nozzle means to communicate when in its second stable position.
Claim 3
Dependent Claim
27 words
The invention according to claim 1 wherein the force responsive means if further arranged to close off the first nozzle means when in its second stable position.
Claim 4
Dependent Claim
73 words
The invention according to claim 1 additionally comprising third and fourth nozzle means disposed within the second pressure chamber means oppositely of the first and second nozzle means in the first pressure chamber, the force responsive means further arranged to allow the second port and the fourth nozzle means to communicate when in its first stable position, and to allow third and fourth nOzzle means to communicate when in its second stable position.
Claim 5
Dependent Claim
41 words
The invention according to claim 3 wherein the force responsive means if further arranged to close off the first nozzle means when in its second stable position and to close off the third nozzle means when in its first stable position.
Claim 6
Dependent Claim
33 words
The invention according to claim 4 wherein the force responsive means comprises bistable snap disc means, the first and second nozzle means are concentric, and the third and fourth nozzle means are concentric.
Claim 7
Dependent Claim
161 words
A snap action pneumatic relay comprising: housing means having a cavity therein; diaphragm means dividing the cavity into first and second pressure chambers; bistable force responsive means having an over center snap action with first and second stable positions, the bistable force responsive means associated with the diaphragm means; first and second concentric annular partitions means disposed within the first pressure chamber, the first partition means being interior to the second partition means; a first port in the housing in communication with the interior of the first partition means; a third port in the housing in communication with the interior of the second partition means, exterior of the first partition means; a fourth port in the housing in communication with the second pressure chamber; the bistable force responsive means arranged to allow the second and third ports to communicate when in its first stable position, and to allow the first and third ports to communicate when in its second stable position.
Claim 8
Dependent Claim
161 words
A snap action pneumatic relay comprising: housing means having a cavity therein; diaphragm means dividing the cavity into first and second pressure chambers; bistable force responsive means having an over center snap action with first and second stable positions, the bistable force responsive means associated with the diaphragm means; first and second concentric annular partitions means disposed within the first pressure chamber, the first partition means being interior to the second partition means; a first port in the housing in communication with the interior of the first partition means; a third port in the housing in communication with the interior of the second partition means, exterior of the first partition means; a fourth port in the housing in communication with the second pressure chamber; the bistable force responsive means arranged to allow the second and third ports to communicate when in its first stable position, and to allow the first and third ports to communicate when in its second stable position.
Claim 9
Dependent Claim
30 words
The invention according to claim 6 wherein the force responsive means is further arranged to cut off communication between the second and third ports when in its second stable position.
Claim 10
Dependent Claim
123 words
The invention according to claim 6 additionally comprising: third and fourth concentric annular partition means disposed within the second pressure chamber oppositely of the first and second concentric annular partition means within the first pressure chamber, the third partition means being interior to the fourth partition means; a fifth port in the housing in communication with the interior of the third partition means; a sixth port in the housing in communication with the interior of the fourth partition means, exterior to the third partition means; the bistable force responsive means further arranged to allow the fourth and sixth ports to communicate when in its first stable position, and to allow the fifth and sixth ports to communicate when in its second stable position.
Claim 11
Dependent Claim
48 words
The invention according to claim 8 wherein the bistable force responsive means is further arranged to cut off communication between the second and third ports when in its second stable position and to cut off communication between the fifth and sixth ports when in its first stable position.
Claim 12
Dependent Claim
16 words
The invention according to claim 9 wherein the bistable force responsive means comprises snap disc means.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-01-02 | 1976-07-03 | 1977-01-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-02 | 1980-07-03 | 1981-01-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-02 | 1984-07-03 | 1985-01-02 | $7700.00 | Window Closed / Lapsed |