US4046005A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Three axis joystick control
Assignee: Measurement Systems Inc
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Filing: 1976-06-14
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Granted: 1977-09-06
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Expires: 1996-06-14
Abstract
Abstract A device for generating isometric control signals in three axes is formed of a shaft having opposed pairs of strain gauges mounted thereon at angles to the shaft axis. One end of the shaft is fixed and the opposite free end is operable by the fingers. Electrical circuitry for combining the signals to produce useful outputs is also disclosed.
Inventors
- 👤 Robert D. Goroski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:28
CPC Classifications
G; G01; G01L; G01L5/00; G01L5/22; G01L5/223; G01L5/16; G01L5/161; G01L5/1627
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
117 words
A force operated, or "stiff-stick" control device which comprises: an elongated control rod; two pairs of elongated strain gauges mounted on the surface of said control rod, the longitudinal axis of each of said strain gauges being disposed at an acute angle to the longitudinal axis of said control rod, the gauges of each pair being on diametrically opposite sides of said rod, the diameters passing through the pairs being perpendicular to one another, and the angles of slope of the gauges of each pair being in the same direction; and means for connecting each of said strain gauges to electric circuit means to provide signals in response to both lateral and torsional flexing of said rod.
Claim 2
Dependent Claim
117 words
A force operated, or "stiff-stick" control device which comprises: an elongated control rod; two pairs of elongated strain gauges mounted on the surface of said control rod, the longitudinal axis of each of said strain gauges being disposed at an acute angle to the longitudinal axis of said control rod, the gauges of each pair being on diametrically opposite sides of said rod, the diameters passing through the pairs being perpendicular to one another, and the angles of slope of the gauges of each pair being in the same direction; and means for connecting each of said strain gauges to electric circuit means to provide signals in response to both lateral and torsional flexing of said rod.
Claim 3
Dependent Claim
25 words
The device of claim 1 wherein the slopes of the gauges of one pair are opposite the slopes of the gauges of the other pair.
Claim 4
Dependent Claim
15 words
The device of claim 2 wherein the angles of slope of the gauges are equal.
Claim 5
Dependent Claim
169 words
A force operated, or "stiff-stick" control device which comprises: an elongated control rod; two pairs of elongated strain gauges mounted on the surface of said control rod, the longitudinal axis of each of said strain gauges being disposed at an angle to the longitudinal axis of said control rod, the gauges of each pair being on diametrically opposite sides of said rod, the diameters passing through the pairs being perpendicular to one another; first means responsive to the outputs of the gauges of one pair to produce a first output signal; second means responsive to the outputs of the gauges of the other pair to produce a second output signal; third means responsive to the outputs of a first gauge of each of said pairs to produce a third signal; fourth means responsive to the outputs of the second gauge of each of said pairs to produce a fourth signal; and fifth means responsive to the sum of said third and fourth signals to produce a fifth, output, signal.
Claim 6
Dependent Claim
169 words
A force operated, or "stiff-stick" control device which comprises: an elongated control rod; two pairs of elongated strain gauges mounted on the surface of said control rod, the longitudinal axis of each of said strain gauges being disposed at an angle to the longitudinal axis of said control rod, the gauges of each pair being on diametrically opposite sides of said rod, the diameters passing through the pairs being perpendicular to one another; first means responsive to the outputs of the gauges of one pair to produce a first output signal; second means responsive to the outputs of the gauges of the other pair to produce a second output signal; third means responsive to the outputs of a first gauge of each of said pairs to produce a third signal; fourth means responsive to the outputs of the second gauge of each of said pairs to produce a fourth signal; and fifth means responsive to the sum of said third and fourth signals to produce a fifth, output, signal.
Claim 7
Dependent Claim
17 words
The device of claim 4 wherein each of said first through fourth means comprises a differential amplifier.
Claim 8
Dependent Claim
21 words
The device of claim 4 wherein the angles of slope of the gauges of each pair are in the same direction.
Claim 9
Dependent Claim
25 words
The device of claim 6 wherein the slopes of the gauges of one pair are opposite the slopes of the gauges of the other pair.
Claim 10
Dependent Claim
15 words
The device of claim 7 wherein the angles of slope of the gauges are equal.
References Cited (Backward Citations)
US3124770A
Cited
US2909764A
Cited
US2943480A
Cited
US3234787A
Cited
US3454920A
Cited
US3513431A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-09-05 | 1981-03-07 | 1981-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-09-05 | 1985-03-07 | 1985-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-09-05 | 1989-03-07 | 1989-09-06 | $7700.00 | Window Closed / Lapsed |