US3599510A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Controlled device comprising alternate manual or power operators
Assignee: Boeing Co
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Filing: 1969-10-06
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Granted: 1971-08-17
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Expires: 1989-10-06
Abstract
Abstract A control system utilizing a compact clutch assembly which will allow an output member to be driven by either of two input members, and the output member to back drive one of said input members. The preferred embodiment involves an aircraft engine throttle control system which has a clutch assembly located adjacent to the manual operating levers in the pilot''s control console. The clutch utilizes friction shoes which are pivotally mounted on the output member and normally spring biased into frictional contact with an autopilot servo-controlled disk. For manual operation, cam means are employed to lift the frictional contact with the servodisk for direct drive of the output members by a manual throttle lever. The clutch will allow manual override through slipping of the shoes in the event the cam means fails to function, and will similarly allow a back drive of the output member and the manual lever by feedback forces from a thrust reverser actuated mechanism.
Inventors
- 👤 John W Scott Sr
- 👤 John A Hockenson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 03:19
CPC Classifications
B; B64; B64D; B64D31/00; B64D31/02; B64D31/04; F; F16; F16D; F16D13/00; F16D13/10; F16H; F16H37/00; G; G05; G05G; G05G11/00; F16H2700/00; F16H2700/02
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
224 words
In a control system which includes a device to be controlled, automatic means for controlling said device, manually operable means for controlling said device, a clutch mechanism for disconnecting the device from said automatic means and connecting it to the manually operable means for control thereby; said clutch mechanism comprising: an input member connected to said automatic control means; an output member operably connected to said device; a clutch shoe pivotally carried by one of said input and output members and disposed in juxtaposition to the other of said input and output members; biasing means normally urging said clutch shoe into frictional engagement with said other of said input and output elements to clutch said elements together for concurrent movement wherein said biasing means exerts a normal force on said clutch shoe which is directly proportional to the biasing force developed by said biasing means and is independent of the resistive force of the output member; declutching means operatively disposed between the manually operable means and the clutch shoe for disengaging the clutch shoe from said other of said input and output members when the manually operable means is displaced by manual force; and abutment means mounted on the output element and positioned to be engaged by the manually operable means whereby continued displacement of said manually operable means will move the output member.
Claim 2
Dependent Claim
224 words
In a control system which includes a device to be controlled, automatic means for controlling said device, manually operable means for controlling said device, a clutch mechanism for disconnecting the device from said automatic means and connecting it to the manually operable means for control thereby; said clutch mechanism comprising: an input member connected to said automatic control means; an output member operably connected to said device; a clutch shoe pivotally carried by one of said input and output members and disposed in juxtaposition to the other of said input and output members; biasing means normally urging said clutch shoe into frictional engagement with said other of said input and output elements to clutch said elements together for concurrent movement wherein said biasing means exerts a normal force on said clutch shoe which is directly proportional to the biasing force developed by said biasing means and is independent of the resistive force of the output member; declutching means operatively disposed between the manually operable means and the clutch shoe for disengaging the clutch shoe from said other of said input and output members when the manually operable means is displaced by manual force; and abutment means mounted on the output element and positioned to be engaged by the manually operable means whereby continued displacement of said manually operable means will move the output member.
Claim 3
Dependent Claim
68 words
A control system according to claim 1 wherein said clutch shoe is carried by a support member which is pivotally mounted on said output member and said biasing means acts upon said support member such that said normal force is greater than said biasing force by a predetermined ratio, and said declutching means includes rotatably mounted means for applying a declutching force acting to oppose said biasing force.
Claim 4
Dependent Claim
39 words
A control system according to claim 2 wherein said manually operable means includes a manually operable lever system for rotating said rotatably mounted means and for engaging said abutment means after a predetermined rotation of said rotatably mounted means.
Claim 5
Dependent Claim
99 words
A control system according to claim 3 wherein said manually operable lever system includes an actuating lever normally disposed in spaced relationship to said abutment means and operably connected to said rotatably mounted means whereby upon application of force to said lever system said actuating lever will move to rotate said rotatably mounted means a predetermined distance before engaging said abutment means to thereby disengage said clutch shoe from said input member and, upon contact with said abutment means, to allow a direct drive of said output member by said manually operable means without frictional drag between clutch components.
Claim 6
Dependent Claim
90 words
A control system according to claim 4 wherein said manually operable lever system includes a first lever mounted coaxially with said actuating lever, a second lever rotatably mounted upon said first lever, and an interconnecting means responsive to said second lever for requiring concurrent movement of each of said first, second, and actuating levers when said second lever is in a stowed position and for moving said actuating lever independently of said first lever when manual force is applied to said second lever to move it from its stowed position.
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) | 1974-08-16 | 1975-02-15 | 1975-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-16 | 1979-02-15 | 1979-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-16 | 1983-02-15 | 1983-08-17 | $7700.00 | Window Closed / Lapsed |