Patent US4577870A successfully refreshed from Google Patents.
Patent US3602059A successfully refreshed from Google Patents.
US3602059A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Swash plate control mechanisms
Assignee: Westland Group PLC
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Filing: 1969-07-11
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Granted: 1971-08-31
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Expires: 1989-07-11
Abstract
Abstract A swash plate control mechanism comprising a gimbal-mounted inner portion with a fixed central mounting and an outer portion rotatable about a predetermined arc of movement; the inner portion is tiltable about any axis through the fixed center mounting independently or in cooperation with the rotational movement of the outer portion. The mechanism is operably associated with mechanically linked control rods on the outer and inner portions of the swash plate mechanism, so that rotation of the outer portion will increase or decrease the range of movement between pairs of controls rods, giving a variable differential ratio between said pairs of rods controlled by the movement of the swash plate mechanism.
Inventors
- 👤 Robert J Jupe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:11
CPC Classifications
F; F16; F16H; F16H21/00; F16H21/46; B; B64; B64C; B64C27/00; B64C27/54; B64C27/58; B64C27/59; B64C27/605; Y; Y10; Y10T; Y10T74/00; Y10T74/20
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
95 words
A gimbal-mounted swash plate control assembly comprising an inner ring and an outer ring, one of said rings being rotatable about a polar axis relative to the other, at least one pair of control rods, one of each pair, being mechanically connected to the inner and outer rings respectively to form an input and output control, central mounting means for said rings to allow the swash plate assembly to tilt about any axis, rotation of one of said rings relative to the other providing a range of differential movement ratios between input and output controls.
Claim 2
Dependent Claim
95 words
A gimbal-mounted swash plate control assembly comprising an inner ring and an outer ring, one of said rings being rotatable about a polar axis relative to the other, at least one pair of control rods, one of each pair, being mechanically connected to the inner and outer rings respectively to form an input and output control, central mounting means for said rings to allow the swash plate assembly to tilt about any axis, rotation of one of said rings relative to the other providing a range of differential movement ratios between input and output controls.
Claim 3
Dependent Claim
43 words
A gimbal-mounted swash plate control assembly according to claim 1 wherein said central mounting means comprises gimbal-mounting means for said inner ring whereby said inner ring is tiltable about any axis independently of or in cooperation with the rotatable ring of said assembly.
Claim 4
Dependent Claim
39 words
A gimbal-mounted swash plate control assembly according to claim 2, wherein, the outer ring of said assembly is fixed and the inner ring is rotatable about said polar axis relative to said outer ring and tiltable about any axis.
Claim 5
Dependent Claim
42 words
A gimbal-mounted swash plate control assembly according to claim 3 wherein said central mounting means comprises gimbal-mounting means whereby said outer ring is tiltable about any axis and the inner ring is rotatable about said polar axis relative to the outer ring.
References Cited (Backward Citations)
US3218874A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-08-30 | 1975-03-01 | 1975-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-30 | 1979-03-01 | 1979-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-30 | 1983-03-01 | 1983-08-31 | $7700.00 | Window Closed / Lapsed |