DE29715472U1 - World clock - Google Patents

Description

[Rle:ANM\Ll6901B1.DOC] Description 28.08.gJ.,

Patent application

Yan Duem Ll

Description WORLD CLOCK

This invention is a clock that can display the local time in all time zones of the earth simultaneously, which is achieved by using a dial with time zone divisions that rotates synchronously with the earth, so that the local time in all time zones of the earth can be read at any time, which makes the invention practical, useful and economical.

Conventional clocks can only show the time in one time zone at a time, which is why large world maps in orthographic projection with time zone divisions and a chronometer set to the corresponding local time of the time zone are used at airports and in international hotels, conference centers and offices of large companies in order to make it easier for employees and guests to orient themselves in time on the globe.

People who often travel to different countries around the world rely on this information. However, this traditional model has the following disadvantages:

(1) The large-scale arrangement with multiple clocks takes up a lot of space and is complicated.

(2) The representation of 24 time zones and the necessary use of one clock per time zone, i.e. a total of 24 clocks, causes unnecessary costs and makes it difficult to get an overview: viewers of these world clocks often have to walk a distance in order to be able to read the desired time.

[File:ANM\U6901B1.DOC] Description 28.08.97 Patent application Yan Duem LI

(3) A failure, e.g. due to weak batteries, of one of the many clocks often goes unnoticed for a long time and leads to incorrect information and possible consequences for people with important appointments.

(4) Air travellers often have to adjust their clocks several times and are therefore dependent on calculation methods rather than simply reading the time.

In view of the above-mentioned disadvantages of traditional world time clocks, the applicant, with many years of experience in clockmaking and after long, detailed studies, many experiments and constant improvements, has created an invention with the following objectives, namely to produce a world time clock which, by means of a dial with time zone divisions rotating synchronously with the earth, makes it possible to read the local time in all time zones at any time, and thus -

(1) eliminates the need for large world maps and instead provides an easy-to-install, space-saving alternative;

(2) eliminates the need for multiple clocks and the associated costs and instead allows the local time to be read on a single clock face, which is practical and convenient;

(3) Deviations in the accuracy of the clock can be detected immediately, so that all local times are always correct

are displayed;

(4) when travelling by plane across several time zones, it is not necessary to adjust the clock; one only needs to read the time in the relevant zone, which

[File:ANM\U6901B1,DOC] Description 28.08.97 .&iacgr;.,'..

Patent application Yan Duem Ll

invention an extremely practical instrument.

The invention is explained in more detail below with reference to the schematic figures 1 to 8.
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As can be seen in Figures 1 and 2, the present invention consists of a watch case 10 with a central axis, on which there is a dial 11, a time dial 12, the minute hand 13, the second hand 14 and above that a cover 15 with a shaded area 150 which fits on the watch case 10. The dial 11 has an inner dial circle 111 with a division into 24 sections and an outer dial circle with 60 divisions. The dial 11 is fixedly attached to the base 100 of the watch case 10. On the time dial 12 there is a world map in orthographic projection 121 with graduations 120 for the time zones of the earth. This time dial 12 is attached to the axis 101 and rotates on this axis. The minute hand 13 and second hand 14 are mounted on the axis pin 102 and 103, respectively, and rotate on these axes. By mounting the hour hand on the axis 101, the time dial 12 is moved in synchronization with the rotation of the earth, and the graduations 120 point to the 24 divisions of the scale 111 of the dial 11; the minute hand 13 and second hand 14 point to the 60 divisions of the scale 110, whereby all local times in all time zones of the world can be read simultaneously. This form of representation is clear and enables the exact local time to be read anywhere in the world.

After this description of the structure of the present invention, the functional principle of the same will now be discussed in detail:
35

The axes of the watch case 10 (not part of the present

[File:ANM\LI6901B1.DOC] Description 28.08.97 Patent application Yan Duem LI

The hour hand’s axis 101 rotates anti-clockwise by 15 degrees per hour, i.e. one (1) revolution in 24 hours, which corresponds to the revolution of the earth. The minute hand 13 and second hand 14 rotate clockwise, with the second hand 14 taking sixty seconds (one minute) per revolution and the minute hand 13 taking sixty minutes (one hour) per revolution.

Regarding Figures 3 and 4: The clockwise rotation of the second hand 14 leads to the clockwise rotation of the minute hand 13 and thus the advancement on the dial 11 by one unit on the 60-unit scale 110. After the minute hand 13 has advanced sixty units, ie has completed a full rotation, the time dial 12 is rotated anti-clockwise about the axis 101 and thus advances one unit on the 24-part scale 111 of the dial 11. This is equivalent to the passage of an hour. In Figure 3 it can be seen that if the user wants to read the time in Berlin 16, the local time there is displayed on the division line 120 of the time dial 12; the time zone Berlin 16 lies between the numbers 9 and 10 on the 24-part scale

111. This shows that it is currently 9 o'clock in Berlin. The minute hand 13 is at position 31 on the 60-part scale 110, while the second hand 14 is at position 24 on the 60-part scale 110, which is equivalent to 24 seconds. The time in the local zone Berlin 16 can therefore be read as 9 o'clock, 31 minutes and 24 seconds.

After a certain period of time, the time plate 12, the minute hand 13 and the second hand 14 have moved on according to the principle given. If the time in Berlin 16 is to be read again,

[File:ANM\L!6901B1.DOC3 Description 28.08.97 Patent application Yan Duem Ll

the time plate 12 has rotated a few positions counterclockwise. As shown in Figure 4, the Berlin 16 time zone is now between the 12th and 13th division of the 24-part hour scale 110, while the minute hand is at position 1 of the 60-part scale 110 and the second hand is at position 15 of the 60-part scale 110. This means that the time in Berlin can be read as 12 o'clock, 1 minute and 15 seconds. Following this principle, the time at any place in the world can be easily determined using the world map on the time plate 12 and its divisions 120.

Furthermore, above the above-mentioned construction there is a cover 15 with a shaded area 150, which together with the transparent area 151 is placed above the world map on the time sheet 12. Together, the shaded area 150 and the transparent area 151 represent day and night in the various zones of the earth.
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From the above description, the following advantages of the present invention become clear:

(1) The invention saves space because it eliminates the need for large cards and multiple clocks. The invention is small, handy and convenient.

(2) The invention eliminates the need for multiple chronometers and is therefore an economical solution. It allows the time in different time zones to be read on a single chronometer and is therefore practical and convenient.

(3) Errors in the time display can be noticed and corrected immediately.

[File:ANM\L!6901B1.DOC] Description 28.08.97 ·&idigr;·. *.·'

Patent application *

Yan Duem LI

(4) Implemented as a wristwatch, this invention is particularly useful for air travelers, since the local times in different time zones can be read conveniently and without adjusting the watch.

Figures 5, 6, 7 and 8 show a further embodiment of the present invention, characterized in that the outer circle 17 of the dial 60 has divisions 170 and the inner circle has graduations 172 corresponding to the time zones 171. The time dial 18 is divided into two zones, a shaded 181 and a transparent 182, with the outer circle of the dial having 24 graduations 180. The dial 17 can thus be firmly attached to the watch case 10, while the time dial 18 is attached to the axis 101 and thus automatically moves clockwise with its 24-part scale 180 and, together with the time zone graduations 171, enables the time to be read.

This design is also part of the protection claim.

In summary, the present invention provides a simple method for simultaneously displaying the time in different time zones of the world, which is achieved by means of a world map with time zone divisions that rotates synchronously with the rotation of the earth, whereby the local time in all time zones of the world can be displayed simultaneously and read at a glance. The invention is therefore extremely practical, convenient and economical. The applicant hopes that it will meet the requirements for protection claims and hereby files an application for patent protection with all due courtesy.

peANM\LI6901B1.DOC] Description 28.08.97 ** **

Patent application

Yan Duem Ll

Characters:

Figure 1 shows an exploded view of the present invention,
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Figure 2 shows a cross section of the present invention.

Figures 3 and 4 show the operating principle of the time display of the present invention.
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Figure 5 is another embodiment of the present invention.

Figure 6 is a cross section through a further embodiment of the present invention.

Figures 7 and 8 show the functional principle of the further embodiment of the present invention.

10 Watch Case

101 Hour axis

102 Minute axis

103 Second axis

11, 17 Scale sheet

110, 170 60-part scale
111, 180 24-part scale

12, 18 Timesheet

120, 171 zone lines

121, 172 World map
13 minute hand

14 second hand
15, 19 Cover
150, 181 shaded area
16 Berlin
100 base area

182, 151 transparent area

[Flle:ANM\LI6901B1.DOC] Description 28.08.97 Patent application Yan Duem LI

This invention is a world clock, characterized by a time sheet rotating synchronously with the earth with a world map in orthographic projection and time zones marked on it for the simultaneous display of the local time in all time zones of the earth. This world clock is therefore a highly practical, useful and economical invention.

The present invention consists of a watch case with a central axis, on which there is a scale, time dial, minute hand and second hand, on which there is a partially shaded cover, whereby the scale has a 24-part scale in the inner circle and a 60-part scale in the outer circle and is firmly attached to the watch case; on the time dial there is a world map in orthographic projection with graduations for the earth's time zones; whereby the time dial is attached to the hour axis and rotates accordingly. The invention also includes a minute hand and a second hand, attached to the minute and second axes of the watch in corresponding rotation. With the rotation of the hour axis, the time dial rotates in synchronization with the rotation of the earth and, together with the 24-part scale on the dial, indicates the hours, while the minute and second hands indicate the minutes and seconds on the 60-part scale on the dial, thus allowing the time to be read in hours, minutes and seconds in any time zone on earth, making the invention extremely practical, convenient and economical.

Claims (3)

Protection claims 1. World time clock, consisting of a clock case with axes, on which there is a dial, a time dial, a minute hand and a second hand, as well as a cover; whereby the dial has a 24-part scale in the inner circle and a 60-part scale in the outer circle and is firmly attached to the clock case; on the time dial there is a world map in orthographic projection with graduations for the earth's time zones; whereby the time dial is attached to the hour axis and rotates accordingly; furthermore, a minute hand and a second hand, fixed on the minute and second axes of the clock in corresponding rotation, whereby with the rotation of the hour axis the time dial is rotated synchronously with the rotation of the earth and together with the 24-part scale on the dial it shows the hours, while the minute and second hands together with the 60-part scale on the dial show the minutes and seconds and thus the time can be read in any time zone on earth. 2. World time clock according to protection claim I ₁ with a 60-part scale in the outer circle of the dial, but with a world map with corresponding time zone divisions in the inner circle of the dial, as well as a 24-part scale on the time dial; the dial is fixed in the watch case, while the time dial is fixed to the hour axis of the clock and thus rotates clockwise as time passes, whereby together with the time zone division the time can be read in any time zone. 3. World time clock according to claims 1 and 2, wherein [Fi!e:ANM\Ll6901A1.DOC] Protection claims 28JÄ.9? Patent application Yan Duem LI an additional cover on the watch case or the time dial, consisting of a shaded and a transparent semicircle, used to indicate day and night on Earth.