US4655240A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulic volumetric proportioning valve
Assignee: Individual
•
Filing: 1985-03-28
•
Granted: 1987-04-07
•
Expires: 2005-03-28
Abstract
Abstract A hydraulic volumetric proportioning valve which may be installed in pre-existing hydraulic systems such as aircraft landing gear extension and retraction systems to independently regulate and vary the rate of hydraulic system operation at desired stages of system operation in response to the volume of fluid flow through the system during each stage of system operation.
Inventors
- 👤 John A. Flinchum
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:54
CPC Classifications
G; G05; G05D; G05D7/00; G05D7/01; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2559; Y10T137/2562; Y10T137/8593; Y10T137/87265; Y10T137/87499; Y10T137/87539
Claims Analysis
Total Claims: 42
Claim 1
Independent Claim
110 words
A hydraulic volumetric proportioning valve, including: (a) an input; (b) an output; (c) a means for varying the rate of fluid flow from said output in response to flow of a predetermined volume of fluid into said input, including: (i) an initial channel in communication with said input and said output; and (ii) a metering channel in communication with said input; and (iii) a means in communication with said metering channel for interrupting flow from said initial channel to said output in response to flow of a predetermined volume of fluid through said metering channel; and (iv) at least one alternative channel in communication with said input and said output.
Claim 2
Dependent Claim
110 words
A hydraulic volumetric proportioning valve, including: (a) an input; (b) an output; (c) a means for varying the rate of fluid flow from said output in response to flow of a predetermined volume of fluid into said input, including: (i) an initial channel in communication with said input and said output; and (ii) a metering channel in communication with said input; and (iii) a means in communication with said metering channel for interrupting flow from said initial channel to said output in response to flow of a predetermined volume of fluid through said metering channel; and (iv) at least one alternative channel in communication with said input and said output.
Claim 3
Dependent Claim
35 words
A hydraulic volumetric proportioning valve, as claimed in claim 1, further including means for regulating the rate of flow of fluid through said initial channel in response to hydraulic pressure differential across said initial channel.
Claim 4
Dependent Claim
29 words
A hydraulic volumetric proportioning valve, as claimed in claim 2, wherein said means for regulating the rate of flow of fluid through said initial channel includes a liquid restrictor.
Claim 5
Dependent Claim
25 words
A hydraulic volumetric proportioning valve as claimed in claim 1, further including means for regulating the rate of flow of fluid through said metering channel.
Claim 6
Dependent Claim
35 words
A hydraulic volumetric proportioning valve as claimed in claim 1, further including means for regulating the rate of flow of fluid through said metering channel in response to hydraulic pressure differential across said metering channel.
Claim 7
Dependent Claim
29 words
A hydraulic volumetric proportioning valve as claimed in claim 5, wherein said means for regulating the rate of flow of fluid through said metering channel includes a liquid restrictor.
Claim 8
Dependent Claim
25 words
A hydraulic volumetric proportioning valve as claimed in claim 2, further including means for regulating the rate of flow of fluid through said metering channel.
Claim 9
Dependent Claim
35 words
A hydraulic volumetric proportioning valve as claimed in claim 2, further including means for regulating the rate of flow of fluid through said metering channel in response to hydraulic pressure differential across said metering channel.
Claim 10
Dependent Claim
29 words
A hydraulic volumetric proportioning valve as claimed in claim 8, wherein said means for regulating the rate of flow of fluid through said metering channel includes a liquid restrictor.
Claim 11
Dependent Claim
54 words
A hydraulic volumetric proportioning valve as claimed in claim 1, further including: (i) means for regulating the flow of fluid through said initial channel in response to hydraulic pressure differential across said channel, which means includes a liquid restrictor; and (ii) means for regulating the rate of flow of fluid through said metering channel.
Claim 12
Dependent Claim
38 words
A hydraulic volumetric proportioning valve as claimed in claim 10, wherein said means for regulating the rate of flow of fluid through said metering channel regulates said flow in response to hydraulic pressure differential across said metering channel.
Claim 13
Dependent Claim
29 words
A hydraulic volumetric proportioning valve as claimed in claim 11, wherein said means for regulating the rate of flow of fluid through said metering channel includes a liquid restrictor.
Claim 14
Dependent Claim
34 words
A hydraulic volumetric proportioning valve, as claimed in claim 1, further including means for regulating the rate of flow in said initial channel in proportion to the rate of flow in said metering channel.
Claim 15
Dependent Claim
104 words
A hydraulic volumetric proportioning valve, as claimed in claim 13, wherein the hydraulic pressure differential across said metering channel is equal to the hydraulic pressure differential across said initial channel, and wherein said means for regulating the rate of flow in said initial channel in proportion to the rate of flow in said metering channel further includes: (1) means for regulating the rate of flow in said metering channel in response to said hydraulic pressure differential across said metering channel; and (2) means for regulating the rate of flow in said initial channel in response to said hydraulic pressure differential across said initial channel.
Claim 16
Dependent Claim
27 words
A hydraulic volumetric proportioning valve, as claimed in claim 14, wherein said means for regulating the rate of flow in said metering channel includes a liquid restrictor.
Claim 17
Dependent Claim
27 words
A hydraulic volumetric proportioning valve, as claimed in claim 14, wherein said means for regulating the rate of flow in said initial channel includes a liquid restrictor.
Claim 18
Dependent Claim
45 words
A hydraulic volumetric proportioning valve as claimed in claim 14, wherein said means for regulating the rate of flow in said initial channel includes a liquid restrictor, and wherein said means for regulating the rate of flow in said initial channel includes a liquid restrictor.
Claim 19
Dependent Claim
36 words
A hydraulic volumetric proportioning valve, as claimed in claim 1, further including means for regulating the rate of flow of fluid through said alternative channel in response to the hydraulic pressure differential across said alternative channel.
Claim 20
Dependent Claim
29 words
A hydraulic volumetric proportioning valve, as claimed in claim 18, wherein said means for regulating the rate of flow of fluid through said alternative channel includes a liquid restrictor.
Claim 21
Dependent Claim
141 words
A hydraulic volumetric proportioning valve, including: (a) an input; (b) an output; (c) a means for varying the rate of fluid flow from said output in response to flow of a predetermined volume of fluid into said input, including: (i) an initial channel in communication with said input and said output; (ii) at least one alternative channel in communication with said input and said output; (iii) a metering channel in communication with said input; and (iv) a shuttle valve in communication between said metering channel and said output, said shuttle valve being further positioned between said initial channel and said output such that the flow of a predetermined volume of fluid from said input through said metering channel and into said shuttle valve will close said shuttle valve and interrupt the flow of liquid from said initial channel to said output.
Claim 22
Dependent Claim
141 words
A hydraulic volumetric proportioning valve, including: (a) an input; (b) an output; (c) a means for varying the rate of fluid flow from said output in response to flow of a predetermined volume of fluid into said input, including: (i) an initial channel in communication with said input and said output; (ii) at least one alternative channel in communication with said input and said output; (iii) a metering channel in communication with said input; and (iv) a shuttle valve in communication between said metering channel and said output, said shuttle valve being further positioned between said initial channel and said output such that the flow of a predetermined volume of fluid from said input through said metering channel and into said shuttle valve will close said shuttle valve and interrupt the flow of liquid from said initial channel to said output.
Claim 23
Dependent Claim
35 words
A hydraulic volumetric proportioning valve, as claimed in claim 20, further including means for regulating the rate of flow of fluid through said initial channel in response to hydraulic pressure differential across said initial channel.
Claim 24
Dependent Claim
29 words
A hydraulic volumetric proportioning valve, as claimed in claim 21, wherein said means for regulating the rate of flow of fluid through said initial channel includes a liquid restrictor.
Claim 25
Dependent Claim
25 words
A hydraulic volumetric proportioning valve, as claimed in claim 20, further including means for regulating the rate of flow of fluid through said metering channel.
Claim 26
Dependent Claim
35 words
A hydraulic volumetric proportioning valve as claimed in claim 20, further including means for regulating the rate of flow of fluid through said metering channel in response to hydraulic pressure differential across said metering channel.
Claim 27
Dependent Claim
29 words
A hydraulic volumetric proportioning valve as claimed in claim 24, wherein said means for regulating the rate of flow of fluid through said metering channel includes a liquid restrictor.
Claim 28
Dependent Claim
53 words
A hydraulic volumetric proportioning valve, as claimed in claim 20, further including: (i) a means for regulating the rate of flow of fuid through said initial channel in response to hydraulic pressure differential across said initial channel; and (ii) a means for regulating the rate of flow of fluid through said metering channel.
Claim 29
Dependent Claim
38 words
A hydraulic volumetric proportioning valve as claimed in claim 26, wherein said means for regulating the rate of flow of fluid through said metering channel regulates said flow in response to hydraulic pressure differential across said metering channel.
Claim 30
Dependent Claim
29 words
A hydraulic volumetric proportioning valve as claimed in claim 27, wherein said means for regulating the rate of flow of fluid through said metering channel includes a liquid restrictor.
Claim 31
Dependent Claim
64 words
A hydraulic volumetric proportioning valve as claimed in claim 20, further including (i) means for regulating the rate of flow through said initial channel in response to hydraulic pressure differential across said first channel, wherein said means for regulating the flow through said initial channel includes a liquid restrictor; and (ii) means for regulating the rate of flow of fluid through said metering channel.
Claim 32
Dependent Claim
38 words
A hydraulic volumetric proportioning valve as claimed in claim 29, wherein said means for regulating the rate of flow of fluid through said metering channel regulates said flow in response to hydraulic pressure differential across said metering channel.
Claim 33
Dependent Claim
29 words
A hydraulic volumetric proportioning valve as claimed in claim 30, wherein said means for regulating the rate of flow of fluid through said metering channel includes a liquid restrictor.
Claim 34
Dependent Claim
34 words
A hydraulic volumetric proportioning valve, as claimed in claim 30, further including means for regulating the rate of flow in said initial channel in proportion to the rate of flow in said metering channel.
Claim 35
Dependent Claim
104 words
A hydraulic volumetric proportioning valve, as claimed in claim 32, wherein the hydraulic presure differential across said metering channel is equal to the hydraulic pressure differential across said initial channel, and wherein said means for regulating the rate of flow in said first channel in proportion to the rate of flow in said metering channel further includes: (1) means for regulating the rate of flow in said metering channel in response to said hydraulic pressure differential across said metering channel; and (2) means for regulating the rate of flow in said initial channel in response to said hydraulic pressure differential across said initial channel.
Claim 36
Dependent Claim
27 words
A hydraulic volumetric proportioning valve, as claimed in claim 33, wherein said means for regulating the rate of flow in said metering channel includes a liquid restrictor.
Claim 37
Dependent Claim
27 words
A hydraulic volumetric proportioning valve, as claimed in claim 33, wherein said means for regulating the rate of flow in said initial channel includes a liquid restrictor.
Claim 38
Dependent Claim
45 words
A hydraulic volumetric proportioning valve as claimed in claim 33, wherein said means for regulating the rate of flow in said metering channel includes a liquid restrictor, and wherein said means for regulating the rate of flow in said initial channel includes a liquid restrictor.
Claim 39
Dependent Claim
36 words
A hydraulic volumetric proportioning valve as claimed in claim 20, wherein said means for varying the rate of fluid flow further includes: (iv) at least one alternative channel in communication with said input and said output.
Claim 40
Dependent Claim
38 words
A hydraulic volumetric proportioning valve, as claimed in claim 37, wherein said shuttle valve is in communication between said output and said alternative channel, and wherein said alternative channel enters said shuttle valve downstream of said initial channel.
Claim 41
Dependent Claim
36 words
A hydraulic volumetric proportioning valve, as claimed in claim 37, further including means for regulating the rate of flow of fluid through said alternative channel in response to the hydraulic pressure differential across said alternative channel.
Claim 42
Dependent Claim
29 words
A hydraulic volumetric proportioning valve, as claimed in claim 39, wherein said means for regulating the rate of flow of fluid through said alternative channel includes a liquid restrictor.
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) | 1990-04-06 | 1990-10-06 | 1991-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-04-06 | 1994-10-06 | 1995-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-04-06 | 1998-10-06 | 1999-04-07 | $7700.00 | Window Closed / Lapsed |