US3614029A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Added fluidflow control means for governing the attitude of fluidborne vehicles
Assignee: Individual
•
Filing: 1970-06-12
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Granted: 1971-10-19
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Expires: 1990-06-12
Abstract
Abstract A fluidborne vehicle, such as an aircraft, has two propellers positioned symmetrically on either side of a longitudinal centerline of the vehicle, or has two pairs of propellers, with the pairs positioned symmetrically on opposite sides of the longitudinal centerline. The propellers are driven by respective hydraulic motors and each motor is connected by supply and return flow lines to a source of hydraulic fluid under pressure and independently of each other hydraulic motor, the hydraulic flows to all of the motors being equal or in a fixed proportion to each other. An additional source of hydraulic fluid under pressure has control means for selectively augmenting or decreasing the flow to a selected hydraulic motor.
Inventors
- 👤 Karl Eickmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:30
CPC Classifications
B; B64; B64C; B64C11/00
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
209 words
A fluidborne vehicle comprising, in combination, a body; plural positive displacement hydraulic-fluid operated motors on said body; a main positive displacement hydraulic fluid-flow producing means on said body having plural separate outlets and delivering separate flows of hydraulic fluid, of constantly proportionate rates, to said outlets; respective separate supply lines connecting each motor to a respective outlet of said fluidflow-producing means; plural rotary propelling means each driven by respective hydraulic-fluid operated motor, whereby said propelling means are driven at constantly proportionate angular velocities; further positive displacement hydraulic fluid-flowproducing means on said body having a fluid flow output capacity which is only a minor fraction of the rate of fluid flow through each outlet of said main fluid-flow-producing means; said further fluid-flow-producing means producing an additional flow of fluid at a rate which is only a minor fraction of the rate of flow in each of said supply lines; means connecting said further fluidflow-producing means to said supply lines and operable to direct said additional fluid flow into a selected one of said supply lines to effect a limited increase in the angular velocity of the connected motor and the associated propelling means; and adjustment means operable to adjust the rate of flow of said further positive displacement fluid-flow-producing means.
Claim 2
Dependent Claim
209 words
A fluidborne vehicle comprising, in combination, a body; plural positive displacement hydraulic-fluid operated motors on said body; a main positive displacement hydraulic fluid-flow producing means on said body having plural separate outlets and delivering separate flows of hydraulic fluid, of constantly proportionate rates, to said outlets; respective separate supply lines connecting each motor to a respective outlet of said fluidflow-producing means; plural rotary propelling means each driven by respective hydraulic-fluid operated motor, whereby said propelling means are driven at constantly proportionate angular velocities; further positive displacement hydraulic fluid-flowproducing means on said body having a fluid flow output capacity which is only a minor fraction of the rate of fluid flow through each outlet of said main fluid-flow-producing means; said further fluid-flow-producing means producing an additional flow of fluid at a rate which is only a minor fraction of the rate of flow in each of said supply lines; means connecting said further fluidflow-producing means to said supply lines and operable to direct said additional fluid flow into a selected one of said supply lines to effect a limited increase in the angular velocity of the connected motor and the associated propelling means; and adjustment means operable to adjust the rate of flow of said further positive displacement fluid-flow-producing means.
Claim 3
Dependent Claim
56 words
A fluidborne vehicle as claimed in claim 1, wherein said vehicle is an aircraft having wings and said propelling means are respective propellers each driven by a respective hydraulic-fluid-operated motor; said propellers including two pairs of propellers, one pair on each side of said body, and the two propellers of each pair being respective different levels.
Claim 4
Dependent Claim
30 words
A fluidborne vehicle, as claimed in claim 1, in which both said main fluid-flow-producing means and said further fluid-flow-producing means are interconnected to be driven at constantly proportionate angular velocities.
Claim 5
Dependent Claim
69 words
A fluidborne vehicle, as claimed in claim 1, in which said adjustment means includes control means connected to said further positive displacement flow-producing means and, by respective separate further fluid lines, to said separate supply lines, for selectively connecting said further positive displacement fluid-flow-producing means to one selected separate supply line at a time; and sealing means in said control means separating said further fluid lines from each other.
Claim 6
Dependent Claim
33 words
A fluidborne vehicle, as claimed in claim 4, including a respective one-way check valve in each further fluid line providing flow from said control means to blocking return flow to said control means.
Claim 7
Dependent Claim
27 words
A providing vehicle, as claimed in claim 1, wherein a plurality of separate further fluid-flow-producing means are provided, each connecting with a respective different separate supply line.
Claim 8
Dependent Claim
41 words
A fluidborne vehicle, as claimed in claim 1, in which said means connecting said further fluid-flow-producing means to said supply lines comprises respective further fluid lines; and respective one-way valves in each further fluid line preventing reverse flow of fluid therethrough.
Claim 9
Dependent Claim
117 words
A fluidborne vehicle, as claimed in claim, in which there are two fluid motors each driving a respective propeller, said fluid-flow-producing means producing two separated flows of fluid of constantly proportionate rates of flow and each delivered through a respective separate supply line to a respective one of the two fluid motors; said further means producing a third and limited flow of fluid; said control means comprising a control valve means selectively operable to direct said third flow to a selected one of said supply lines for driving a selected one of the motors, and its associated propelling means, at a higher angular velocity, slightly higher than that of the other motor and its associated propeller means.
Claim 10
Dependent Claim
139 words
A fluidborne vehicle, as claimed in claim 1, in which said vehicle is a helicopter having a least four propellers constituting said rotary propelling means and each driven by a respective hydraulic motor constituting one of said positive displacement fluid motors; each motor having respective separate supply line connected thereto for delivery of constantly proportionate rates of flow of fluid to all of said motors; and further means producing at least one additional and limited flow of fluid said control means comprising control valve means selectively operable to direct the fluid of the additional and control flow of fluid into at least one of said supply lines whereby to increase the angular velocity of the hydraulic motor connected thereto and the propeller driven by such hydraulic motor limited amount to change the movement, attitude or inclination of the vehicle.
Claim 11
Dependent Claim
57 words
A fluidborne vehicle, as claimed in claim 4, in which said further means is operable to supply said additional limited flow of fluid to each of said supply lines; said control means comprising plural control means each associated with a respective supply line and selectively operable to deliver a limited control flow into its respective supply line.
Claim 12
Dependent Claim
58 words
A fluidborne vehicle, as claimed in claim 1, including a variable and reversible positive displacement means having one port connected to one of said supply lines and another port connected to another of said supply lines for volumetric positive-controlled transfer of a minor fraction of fluid in either direction between the supply lines to which it is connected.
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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) | 1974-10-18 | 1975-04-19 | 1975-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-18 | 1979-04-19 | 1979-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-18 | 1983-04-19 | 1983-10-19 | $7700.00 | Window Closed / Lapsed |