JPS6331149Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Application of the Invention) This invention relates to a reader that easily calculates the flight time required between departure and arrival airport cities for international aircraft flying between major cities in the world.

(Prior art) The conventional method for calculating the flight time required for international aircraft is T = (Lb - La) - (Gb - Ga) + 24D However, La...departure time (local local standard time) Lb...arrival time (〃) Ga... Time difference between departure city and world standard time Gb... Arrival city (〃) D... Difference in days between arrival date and departure date T... Required flight time. The required time is calculated using this formula. It was troublesome to have to check the time and make calculations every time.

(Problem that the invention aims to solve) This invention was proposed in view of the above situation, and by turning the disk and aligning the scale line with the desired departure/arrival airport city, it is possible to immediately read the flight time required for the aircraft. It is intended for this purpose.

(Means for Solving the Problem) Therefore, this invention consists of a first disk consisting of a large-diameter semicircular portion and a small-diameter semicircular portion; 2nd, 3rd, 4th with diameter
The disks are stacked one after another with the first disk on top, and the center part is pivoted to make it rotatable, and the large diameter part of the first disk has its periphery divided into a plurality of equal parts at an arbitrary center angle. The semicircle corresponds to 24 hours, and each scale is used as a meridian corresponding to the time difference, and the name of the corresponding major city is displayed. A scale is provided that is equally divided at the same central angle as the plate, and the scale is made to correspond to 24 hours on a half-circle, and the corresponding time is displayed counterclockwise over the entire circumference.
A protrusion is provided on the outer periphery of any of the same time parts of the disc and on the outer periphery of the 0 o'clock scale part of the fourth disc, respectively, and placed at the point where the scale line is extended, and the following according to the gist of this configuration is provided. Specific examples and corresponding design changes are planned.

(Example) This invention will be described below with reference to the drawings.

Figure 1 shows a flight time reader for an international aircraft, which includes a first disc 1 consisting of a large-diameter semicircular part 1' and a small-diameter semicircular part 1'', and a small-diameter half of the first disc 1. The second disc 2, the third disc 3, and the fourth disc 4, which have successively larger diameters than the circular part 1'', are stacked one on top of the other in order with the first disc 1 facing upward, and the center part is held by a stopper 5. It is mounted on a shaft and each disc is rotatable.

The large diameter part 1' of the first disc 1 has a center angle of 7.5
A scale A divided into 24 equal degrees is provided, and the semicircle corresponds to 24 hours, and each scale A is a meridian corresponding to the hourly time difference, and the corresponding major city names 6 are displayed in the section 7. In addition, a scale B is provided on the periphery of the second disk 2, which is divided into 48 equal parts with a center angle of 7.5 degrees, which is the same as that of the first disk.
The semicircular area corresponds to 24 hours, and the corresponding time is displayed counterclockwise around the entire periphery on the scale B as an appendix. In other words, the numbers 0 to 23 are displayed twice, and near one of them, a protrusion 8 is provided on the outer periphery near the 12 o'clock part, so that the 12 o'clock scale line a and the 13 o'clock scale line b are extended. Displayed. Similarly, the third disk 3
A scale C and hour numerals are also displayed, and a protrusion 9 is provided to extend the 12 o'clock scale line c and the 13 o'clock scale line d. A scale D and hour numbers are displayed on the protrusion 10.
is provided on the outer periphery of one 0 o'clock part, and the 0 o'clock scale line e
is displayed in an extended manner.

(Function) The method of use is, for example, to align the 12 o'clock scale line a on the protrusion 8 of the second disc 2 with the scale A' on the first disc 1 which indicates the departure city of the aircraft, Japan, and then 3
When the 12 o'clock scale line c on the protrusion 9 of the disc 3 is aligned with the scale A'' on the first disc 1 which displays the arrival city Paris, the scales B and C on the second disc 2 and third disc 3 are The timetables for both cities, Japan and Paris, will be compared.
Next, set the 0 o'clock scale line e on the protrusion 10 of the fourth disc 4 to the second
After setting the scale on the 21:00 departure time from Japan on disc 2, follow the scale on the 4th disc 4 that corresponds to the 6:10 pm arrival time in Paris on the third disc 3, and it will be 17 hours.
It takes 10 minutes.

Alternatively, if you know the required time of 17 hours and 10 minutes but the arrival time is unknown, you can find the arrival time in Paris by reading the scale on the third disc 3 that corresponds to the 17 hours and 10 minutes scale on the fourth disc 4. It is also possible to find a time of 6 hours and 10 minutes.

Furthermore, if the arrival city of Paris is in the summer time season, align the 13:00 scale line d on the third disk 3 with the scale A'' that displays Paris on the first disk 1, and the arrival time in Paris during summer time will be 7:10. Therefore, the flight time is the third
By reading the scale on the fourth disk 4 that corresponds to 7:10 on disk 3, 17 hours and 10 minutes can be obtained.

(Effects) As described above, the required flight time reader for international aircraft according to this invention includes a first disc consisting of a large-diameter semicircular part and a small-diameter semicircular part, and a small-diameter semicircular part of the first disc. The second, third, and fourth disks, each having a larger diameter, are connected to the first disk.
The disks are stacked one after another with the disks facing upward, and the center part is pivoted to make it rotatable.The large diameter portion of the first disk is provided with a scale by dividing the periphery into multiple equal parts at an arbitrary central angle, forming a semicircle. Around
Each scale corresponds to the 24-hour period, and the corresponding major city name is displayed as a meridian corresponding to the time difference, and each periphery of the second, third, and fourth disks is equally divided at the same center angle as the first disk. A scale is provided, and the corresponding time is displayed counterclockwise around the entire periphery by making the scale correspond to 24 hours on a half-circle, and also on the outer periphery of any simultaneous time portion of the second and third discs. Since the fourth disc is provided with protrusions on the outer periphery of the 0 o'clock scale portion to extend the scale lines, the following effects can be obtained.

(1) Even if the time difference between major cities around the world is unknown, it is possible to easily determine the flight time required for an aircraft if the local time of departure and arrival at the departure and arrival airport cities is known.

(2) Therefore, it is possible to take measures in advance to prevent deterioration of physical condition due to jet lag, lack of sleep, etc.

(3) Since the standard times between any major cities can be compared, the state of time discrepancies can be seen at a glance, so it is possible to select the optimal time for communication between the two cities.

(4) Since it is easy to operate, even elderly people and children can easily know the optimal time for telephone contact between expatriates and their families who are away from home.

(5) This reader is flat and lightweight, making it very convenient to carry.

[Brief explanation of the drawing]

Figure 1 is a plan view of an embodiment of the flight time reader for international aircraft according to the present invention, Figures 2 and 3 are
Figures 4 and 5 are the first and second discs of the same vessel, respectively.
It is a top view of a disk, a 3rd disk, and a 4th disk. 1...First disc, 1'...Large diameter semicircular part, 1''...
Small diameter semicircular part, 2... second disc, 3... third disc,
4... Fourth disk, 6... City name, 8, 9, 10...
Projection, A, B, C, D...Scale, a, c...12
Hour scale line, b, d...13 hour scale line, e...0 hour scale line.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A first disc consisting of a large-diameter semicircular part and a small-diameter semicircular part, and second and third discs whose diameters are successively larger than the small-diameter semicircular part of the first disc. , and a fourth disk are stacked one after another with the first disk on top, and the center portion is pivoted so that it can rotate freely, and the large diameter portion of the first disk has a plurality of peripheral edges at an arbitrary center angle. A scale is divided into equal parts, and the semicircle corresponds to 24 hours, and each scale is used as a meridian corresponding to the time difference, and the name of the corresponding major city is displayed. Provide a scale equally divided at the same center angle as the first disc, and divide the scale into half-circumference parts.
The corresponding time is displayed counterclockwise around the entire periphery in correspondence with 24 hours, and 0 is displayed on the outer periphery of any simultaneous time portion of the second and third discs, and on the fourth disc.
A required flight time reader for an international aircraft, characterized in that a protrusion is provided on the outer periphery of the hour scale part to display an extended scale line. (2) The required flight time reader for an international aircraft according to claim 1, wherein the equal division scale has a center angle of 7.5 degrees and divides the entire circumference into 48 equal parts. (3) In the above-mentioned reader, the protruding parts of the second and third discs have 1 part on the counterclockwise side from the extended scale line.
A required flight time reader for an international aircraft according to claim 2, wherein the scale line is displayed in an extended manner.