US3935645A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for indicating relative azimuth
Assignee: Komatsu Ltd
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Filing: 1974-08-13
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Granted: 1976-02-03
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Expires: 1994-08-13
Abstract
Abstract An arrangement for indicating a relative azimuth between two objects remote from each other, such as a control station and a mobile unit remotely controlled by the station, on which are respectively mounted first and second synchronous transmitters for generating and transmitting their respective signals corresponding respectively to true azimuths of the station and the unit. The control station is further provided with a relative azimuth indicating device including outer stational and inner rotatable dials, a rotatable indicator, first and second synchronous receivers, each having means for effecting rotation by receiving one of the signals corresponding thereto, and means for transmitting the respective rotations of the receivers to the inner dial and the indicator, respectively. Thus, not only the relative azimuth between the control station and the mobile unit but also their respective true azimuths are simultaneously read on the device at a glance by a controller in the correlation of the outer and inner dials and the indicator.
Inventors
- 👤 Michio Okamoto
- 👤 Shigeru Izawa
- 👤 Michio Hara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 03:22
CPC Classifications
G; G01; G01C; G01C17/00; G01C17/36; G01C17/02; G01C17/04; G01C17/20; G01S; G01S1/00; G01S1/72
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
421 words
An arrangement for indicating a relative azimuth between two objects remote from each other, such as a control station having therein a first detector for detecting a true azimuth thereof and a mobile unit remotely controlled by the control station which has therein a second detector for detecting a true azimuth thereof, comprising: a first synchronous transmitter mounted on the control station for generating and transmitting a signal corresponding to the true azimuth of the control station detected by said first azimuth detector; a second synchronous transmitter mounted on the mobile unit for generating and transmitting a signal corresponding to the true azimuth of the mobile unit detected by said second true azimuth detector; a frame installed in the control station for protecting and supporting other elements constituting said device; a transparent window fitted in front of said frame; an outer stationary dial equally graduated and fixedly secured to the frame inside the window and having a mark thereon aligned with the direction of heading of the control station; an inner rotatable dial equally graduated and disposed concentrically with said outer stationary dial and including a hollow rotary shaft; a rotatable indicator extending to and over said outer stationary dial and having at the intermediate part thereof an arrow shaped member for indicating the graduations of the inner inner dial and having a rotary shaft fixedly secured thereto and inserted concentrically within said hollow rotary shaft of said inner rotatable dial; a first synchronous receiver having therein a rotary shaft and means for providing the rotary shaft with rotation by receving the signal transmitted from said first synchronous transmitter mounted on the control station; a second synchronous receiver having therein a rotary shaft and means for providing the rotary shaft with rotation by receiving the signal transmitted from said second synchronous transmitter mounted on the mobile unit; and means for transmitting said rotations of said first and second synchronous receivers to said inner rotatable dial and the rotatable indicator such that the true azimuth of the control station is represented on the graduation of said inner rotatable dial indicated by said mark provided on said outer stationary dial, and that of the mobile unit is represented on the graduation of said inner rotatable dial indicated by said arrow shaped member provided in the intermediate part of said rotatable indicator, and moreover the relative azimuth between the control station and the mobile unit is represented on the graduation of said outer stationary dial indicated by the leading and of said rotatable indicator.
Claim 2
Dependent Claim
421 words
An arrangement for indicating a relative azimuth between two objects remote from each other, such as a control station having therein a first detector for detecting a true azimuth thereof and a mobile unit remotely controlled by the control station which has therein a second detector for detecting a true azimuth thereof, comprising: a first synchronous transmitter mounted on the control station for generating and transmitting a signal corresponding to the true azimuth of the control station detected by said first azimuth detector; a second synchronous transmitter mounted on the mobile unit for generating and transmitting a signal corresponding to the true azimuth of the mobile unit detected by said second true azimuth detector; a frame installed in the control station for protecting and supporting other elements constituting said device; a transparent window fitted in front of said frame; an outer stationary dial equally graduated and fixedly secured to the frame inside the window and having a mark thereon aligned with the direction of heading of the control station; an inner rotatable dial equally graduated and disposed concentrically with said outer stationary dial and including a hollow rotary shaft; a rotatable indicator extending to and over said outer stationary dial and having at the intermediate part thereof an arrow shaped member for indicating the graduations of the inner inner dial and having a rotary shaft fixedly secured thereto and inserted concentrically within said hollow rotary shaft of said inner rotatable dial; a first synchronous receiver having therein a rotary shaft and means for providing the rotary shaft with rotation by receving the signal transmitted from said first synchronous transmitter mounted on the control station; a second synchronous receiver having therein a rotary shaft and means for providing the rotary shaft with rotation by receiving the signal transmitted from said second synchronous transmitter mounted on the mobile unit; and means for transmitting said rotations of said first and second synchronous receivers to said inner rotatable dial and the rotatable indicator such that the true azimuth of the control station is represented on the graduation of said inner rotatable dial indicated by said mark provided on said outer stationary dial, and that of the mobile unit is represented on the graduation of said inner rotatable dial indicated by said arrow shaped member provided in the intermediate part of said rotatable indicator, and moreover the relative azimuth between the control station and the mobile unit is represented on the graduation of said outer stationary dial indicated by the leading and of said rotatable indicator.
Claim 3
Dependent Claim
315 words
The arrangement as set forth in claim 1, wherein said rotation transmitting means in said relative azimuth indicating device comprises a gear transmitting mechanism consisting of: a first pinion gear fixedly secured to one end of said rotary shaft of said first synchronous receiver; a first idle gear meshed with said first pinion gear; a first year meshed with said first idle gear and having a first shaft fixedly secured thereto and rotatably supported by said frame of said device; a second gear fixedly secured to said shaft; a third gear fixedly secured to one end of said hollow rotary shaft of said inner rotatable dial; a second pinion gear fixedly secured to one end of said rotary shaft of said second synchronous receiver; a second idle gear meshed with said second pinion gear; a fourth gear meshed with said second idle gear and having a second shaft fixedly secured thereto and rotatably supported by said frame of said device; a differential gear unit which is composed of a differential gear frame including a differential response gear, a first bevel gear fixedly secured to one end of said first shaft, a second bevel gear fixedly secured to one end of said second shaft, and an intermediate bevel gear meshed with said first and second bevel gears, said third bevel gear having a third shaft fixedly secured thereto and rotatably supported by said differential gear frame; and a fifth gear meshed with said differential response gear and fixedly secured to one end of said rotary shaft of said rotatable indicator: whereby said first synchronous receiver is connected to said inner rotatable dial through said first pinion gear, first idle gear, first gear, second gear and third gear, and whereby said second synchronous receiver is connected to said rotatable indicator through said second pinion gear, second idle gear, fourth gear, said differential gear unit and fifth gear.
Claim 4
Dependent Claim
258 words
The arrangement as set forth in claim 1, wherein said relative azimuth detecting device further comprises: a first correction means for correcting a discrepancy of said inner rotatable dial, that is, a discrepancy between the true azimuth of the control station represented with the graduation of said inner rotatable dial indicated by said mark provided on said outer stationary dial and the correct true azimuth of the control station, said first correcting means being composed of a correction gear meshed with said first pinion gear, a shaft fixedly secured to said correction gear at the one end thereof and rotatably supported by said frame of the device and a correction knob fixedly secured to the other end of said shaft and disposed in the front face of the device so as to be manually operated, and a second correction means for correcting a discrepancy of said rotatable indicator, that is, a discrepancy between the true azimuth of the mobile unit represented with the graduation of said inner rotatable dial indicated by said arrow shaped member provided in the intermediate part of said indicator and the correct true azimuth of the mobile unit, said second correcting means being composed of a correction gear meshed with said second pinion gear, a shaft fixedly secured to said correction gear at the one end thereof and rotatably supported by said frame of the device and a correction knob fixedly secured to the other end of said shaft and disposed in the front face of the device so as to be manually operated.
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) | 1979-02-02 | 1979-08-04 | 1980-02-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-02-02 | 1983-08-04 | 1984-02-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-02-02 | 1987-08-04 | 1988-02-03 | $7700.00 | Window Closed / Lapsed |