|Publication number||US3763647 A|
|Publication date||9 Oct 1973|
|Filing date||22 Sep 1972|
|Priority date||22 Sep 1972|
|Publication number||US 3763647 A, US 3763647A, US-A-3763647, US3763647 A, US3763647A|
|Original Assignee||Kyoshin Sangyo Co Ltd|
|Export Citation||BiBTeX, EndNote, RefMan|
|Patent Citations (4), Referenced by (10), Classifications (14)|
|External Links: USPTO, USPTO Assignment, Espacenet|
United States Patent 1191 [111 3,763,%7 Shibanai Get 9, W73
[5 POLYCHROMATIC WATCH DIAL PLATE 3,440,882 4/1969 Jones 73/356 3,570,239 3/ 1971 Charles 58/152 R  Invent Japan 3,253,466 5/1966 Chough 58/152 R x  Assignee: Kyoshin Sangyo Ltd"T0kyo Primary Examiner-Richard B. Wilkinson Japan Assistant Examiner-Edith Simmons Jackmon  Fil d; S 22 1972 Attorney-Eric H. Waters et al. 21 Appl. No.: 291,839 [571' ABSTRACT A polychromatic watch dial plate wherein either on  US. Cl. 58/127 R, 58/152 R, 73/356 .the surface of the dial plate or on the figure portion is  Int. Cl. G04b 19/06 coated with a liquid crystal film so that the dial plate  Field of Search 58/127 R, 152 R, or the figure portion may have a variety of colors ac- 58/152 A, 50 R; 73/356 cording to the change of the ambient temperature.
3 References Cited Claims, 3 Drawing igures UNITED STATES PATENTS 3,505,804 4/1970 Hofstein 58/23 R 1- POLYCI'IROMATIC WATCH DIAL PLATE The present invention relates to a decorative watch and, more particularly to a polychromatic dial plate of a watch.
I-Ieretofore, a luminous paint coating has been applied on the pointers and the figures of a watch so that even in the dark the user can read a correct time. However, such a coating is used for that purpose only and has no decorative or magic effects. Also, there have been many decorative dial plates with beautiful and colorful designs and some of them are polychromic but none of them become polychromatic according to temperature variations. In other words, they only become polychromic due to the visual angle of the viewer, or to the effect of light and shade, or the like. On the contrary, the dial plate according to the present invention employs a liquid crystal film coating on the dial plate, either on the plate surface or on the firgure portion, and the liquid crystal film having characteristic of exhibiting a variety of colors according to the change of the ambient temperature or of the body heat of the user, gives rise to an excellent decorative and magic effect to the viewer, in addition to the normal function of the watch.
Therefore, an object of the present invention is to provide a decorative and magic watch having a-polychromatic dial plate which exhibits a variety of colors according to the change of the ambient temperature.
Another object of the present invention is to provide a decorative and magic watch having a polychromatic dial plate wherein the surface of the dial plate excluding the figure portion is coated with a liquid crystal film so that the dial plate may have a variety of colors according to the change of the ambient temperature.
Still another object of the present invention is to provide a decorative and magic watch having a polychromatic dial plate wherein the figure portion excluding the surface of the dial plate is coated with a liquid crystal film so that the figure portion may have a variety of colors in contrast to the surface of the dial plate according to the change of the ambient temperature.
The present invention will now be explained in detail by way of example, with reference to the accompanying drawings in which:
FIG. 1 shows a plain view of a watch dial plate according to the present invention;
FIG. 2 shows a vertical sectional view taken from A-A line of FIG. l in which a liquid crystal film is coated on the surface of the dial plate excluding the figure portion; and
FIG. 3 shows a vertical sectional view taken from A-A' line of FIG. I in which a liquid crystal film is coated only on the figure portion.
Referring to FIG. 1 and FIG. 2, a polychromatic watch dial plate according to the present invention roughly consists ofa dial plate I, a figure portion generally denoted by numeral 2, pointers 3, a watch frame 4 and a front glass 5.
Referring to FIG. 2, the surface of the dial plate 11, with the exception of the figure portion 2, is coated with a liquid crystal film 6. The figure portion 2 is made of, or drawn with, a material different, in color, from the liquid crystal film 6 so that both the crystal film applied portion and the non-applied portion on the dial plate I can be clearly distinguished from each other by color. On the contrary, as shown in FIG. 3, the liquid crystal film 6 may be applied only on the figure portion 2. In this case, the surface of the dial plate 1 is of course made of a material different, in color, from the liquid crystal film 6. In either case the entire surface is then covered by a transparent synthetic resin film 7 to protect the liquid crystal film 6 from damages.
The above described construction according to the present invention has the advantage that the user can enjoy a polychromic and magic beauty as he encounters various external temperature conditions.
What I claim is:
1. A polychromatic watch dial face plate with a liquid crystal film coating for varying the color of the dial face as a function of the ambient temperature, said dial face displaying a predetermined single color corresponding to a predetermined temperature, whereby the color of the dial face is indicative of the ambient temperature.
2. A polychromatic watch dial face plate as defined in claim 1 wherein said liquid crystal film coating is only on the dial face plate, the character portions of said dial face plate being free of said coating, so that said dial face changes colors with change in the abmient temperature.
3. The polychromatic watch dial face plate as defined in claim 3 wherein said liquid crystal film coating is only on the character portions of said dial face, so that said character portions only change color with change in ambient temperature.
|Cited Patent||Filing date||Publication date||Applicant||Title|
|US3253466 *||28 Mar 1963||31 May 1966||Taik Chough Kyoung||Thermometer device|
|US3440882 *||9 Sep 1966||29 Apr 1969||Westinghouse Electric Corp||Thermometer|
|US3505804 *||23 Apr 1968||14 Apr 1970||Rca Corp||Solid state clock|
|US3570239 *||13 May 1969||16 Mar 1971||Georges Ruedin Sa||Wristwatch with means for checking radioactivity of the environment|
|Citing Patent||Filing date||Publication date||Applicant||Title|
|US3863439 *||21 Aug 1973||4 Feb 1975||Suwa Seikosha Kk||Macrocystalline watch dial|
|US4451157 *||13 May 1982||29 May 1984||Reap James D||Combined time and temperature indicating device|
|US4687340 *||16 Oct 1986||18 Aug 1987||Karel Havel||Electronic timepiece with transducers|
|US4705406 *||3 Nov 1986||10 Nov 1987||Karel Havel||Electronic timepiece with physical transducer|
|US4707141 *||6 Jan 1987||17 Nov 1987||Karel Havel||Variable color analog timepiece|
|US6616332 *||18 Nov 1999||9 Sep 2003||Sensarray Corporation||Optical techniques for measuring parameters such as temperature across a surface|
|US6967900 *||13 Sep 2002||22 Nov 2005||Maverick Industries, Inc.||Combination clock radio, weather station and message organizer|
|US6995739||23 Dec 2002||7 Feb 2006||Zexus Technology Limited||Variable color display and articles incorporating same|
|US20030076745 *||13 Sep 2002||24 Apr 2003||Chapman Peter A.||Combination clock radio, weather station and message organizer|
|US20040051722 *||23 Dec 2002||18 Mar 2004||Tak Chun Lee||Variable colour display and articles incorporating same|
|U.S. Classification||368/235, 968/411, 968/156, 374/162|
|International Classification||G04B47/00, G04B47/06, G04B19/12, G04B19/06|
|Cooperative Classification||G04B47/008, G04B47/06, G04B19/12|
|European Classification||G04B19/12, G04B47/06, G04B47/00T|