Abstract:
A hand-held wafer-like signal which is essentially flat octagonally shaped with a handle at the lower end. It has a front side and a back side. The front side is a unitary construction made by plastic injection molding and has a reflector surface, one-half of a handle and a one-half of a cylindrical light housing which is essentially perpendicular to the reflective surface. There is a back side which is also made by injection molding and also has a reflective surface inside an octagonal frame, one-half of a battery container and one-half a cylindrical light housing. The one-half front and back sides are secured together as by screwing and when assembled it becomes a lightweight weatherproof hand-held signal.

Description:
This application is a continuation of application Ser. No. 09/277,089 filed on Mar. 26, 1999 now U.S. Pat. No. 6,134,820. 
    
    
     BACKGROUND OF THE INVENTION: 
     This invention relates to hand-held signals such as used by school guards and road construction personnel. It relates especially a lightweight, easily constructed, signal. 
     Hand-held traffic control signals are well known. A large number of these consists of an octagonal frame with a handle extending out at the lower side. That type signal has a face which is usually red with “STOP” in bold letters across the face. For some uses, one side may be amber with the letters “SLOW” on that face. These have served a useful purpose in the past and have been widely used. However, some of these are not as easily seen in inclimate weather or in the darkness as desired. Various lighted sign structures have been suggested and many have been patented. These tend to be heavier than the aforementioned hand-held signals and over a period of time tires the worker too severely. Many of these illuminated hand-held signals are heavier than desired and do not make use of reflective material as may be desired. 
     SUMMARY OF THE INVENTION 
     This invention concerns a hand-held signal which is relatively lightweight and which attracts attention during inclimate conditions. It includes a front unitary side and a back unitary side. In a preferred embodiment the two sides are nearly symmetrical. The first or front side is basically of an octagonal shaped edge with a half battery housing at the lower part of the edge. The area (or face) inside the edge is of a reflective material. The half battery housing, the edge, the reflective face and the light casing are of unitary construction. A mold is used to construct this of polyethylene. The top edge of the side of the octagonal edge where the half battery casing is, is half a light cylinder which is perpendicular to the face and made integral therewith. 
     The back side or half of the signal likewise has an edge and a reflective surface in between there, a half battery housing and a half light cylinder. 
     When the front side and the back side are placed together the two one-half battery housing at the lower end fit together to form a complete battery housing and a convenient handle for the signal. The top of the hand-held signal has a two half light cylinders which align to form a complete light cylinder. A light bulb is provided inside the complete light cylinder. Lenses are provided at each end of the completed signal. 
     The lower end of each half of the one-half battery housing is provided with threads so that when they are fit together they form a completed fitted surface for a cap to screw on which holds the batteries firmly in the completed handle or battery housing which are the same. 
     It is desired to put a command or signal in letter form on both the front and back reflector surfaces or faces. Each face has indentations in the form of a word such as “STOP” or “SLOW.” Reflective tape of a desired color is placed in these indentations. In the preferred embodiment, each reflective surface is concave to improve the reflectivity. 
     Means are provided to secure the entire front side to the entire back side and in this event there will be a hollow space between the front and rear reflector. It is through this space that the electrical wiring from the batteries to the light is run. Proper switching including flashing switches are provided. 
     It is an object of this invention to obtain a reasonably lightweight hand-held signal which makes use of excellent reflective materials. 
     It is another object to have a unitary front side and a unitary back side which fit together to form the main structure of a hand-held signal. 
     Various further objects will become apparent by reason of the detailed description taken in conjunction with the drawings. 
    
    
     BRIEF DESCRIPTION OF THE DRAWINGS: 
     Other objects and advantages of the invention will become apparent upon reading the following detailed description and upon reference to the drawings in which: 
     FIG. 1 is a view of the front side of my hand-held signal; 
     FIG. 2 is a side view of FIG. 1 in exploded form showing the front unitary side of a signal and the back unitary side and with a cap for fitting over the end of the handle; 
     FIG. 3 is a side view of FIG. 2; and 
     FIG. 4 is an isometric view of the hand-held signal in exploded view showing the manner of assembly. 
    
    
     While the invention will be described in connection with a preferred embodiment, it will be understood that it is not intended to limit the invention to that embodiment. On the contrary, it is intended to cover all alternatives, modifications and equivalents as may be included within the spirit and scope of the invention as defined by the appended claims. 
     DETAILED DESCRIPTION 
     Attention is first directed to FIG. 1 which illustrates a front view of the front side of a signal  10 . It includes an edge  12  which in this case is octagonal which is a normal configuration for a hand-held signal. Inside the edge  12  is a face or reflector  14 . Across the middle of the front is a designation “STOP” which is formed by the indentation  16  within the reflector  14 . Within the indentation is reflective material tape  18  which would normally be white. The reflector  14  would normally be red because that is a uniform color for a stop signal. Also shown are a plurality of screws  28  which can be seen in FIG. 4 as a means for holding the front side and the back side together. At the bottom of the octagonal edge there is a battery housing  30  which includes a switch  34  with a flasher switch  32 . At the top of the edge is a light  22 . The light  22  has a lens  26  and a lens cover  24 . An O-ring groove  20  is indicated and will be discussed later in connection with FIG. 4, 
     Attention is now directed to FIG. 2 which is an exploded view of FIG. 3 which is a side view of FIG.  1 . Shown thereon on the left side is the front side view of the device of FIG.  1  and is identified broadly as  46  and on the right side broadly identified as  48  is the back half. The numerals displayed on FIG. 1 are also shown on the front side  46  in FIG.  2  and like numbers signify the like element or feature thereof. 
     The right side or back side is illustrated by bracket  48  and is identical in construction to the front side  46  except for the battery housing switch  44  and O-ring groove  60  (See FIG.  4 ). The front and the back sides are each unitary. They are preferably made by injection molding using polypropylene. In the case shown, the word STOP is displayed on both the front side  46  and the back side  48 . When in this case the reflector is red and the letters of the words would normally be white. However, it is anticipated that frequently it will be desired to have the word SLOW on the back side instead of the word STOP. When the word SLOW is used, typically the reflector will be amber and the letters themselves will be blue. It is of course readily understood that about any combination can be used. However, these just mentioned are typically the traditional and accepted colors. 
     Typically, in a preferred embodiment, the reflector  14  is about 12¼ inches across and the apex of the concave surface is about {fraction (3/16)} inch from the plane defined by the contact line where the reflector engages the edge  12 . Likewise, these dimensions will preferably be the same on the back side the reflector  52  and an edge  54  which correspond to reflector  14  and edge  12  of the front side of the signal. Back half  48  of FIG. 2 has a cylindrical housing  55  which when put together with the front and back side and assembled as shown in FIG. 3, they form a light housing  22  which has a bulb  27  and lens  26  and  53  with retainers  24  and  57  such as is more clearly seen in FIG.  4 . Reflector  52  is similar to reflector  14  with the exception that when the signal was used for certain type signaling the back side  52  is of a different color from reflector  14 . As mentioned above, frequently the reflector  14  will be red with white letters and the reflector  52  will be amber with blue letters. This is used quite frequently in road construction work. 
     As seen in FIG. 3, when the front side  46  is assembled with the back side  48  there is formed a complete battery housing  30 . Then the threads  31  and  33  form a complete thread over which cap  36  may be screwed. Cap  36  has contact springs  37  as in normal flashlight construction. Also shown in FIG. 3 is an O-ring  60  which fits into the O-ring groove  20  illustrated in FIG.  1  and more clearly illustrated in FIG.  4 . 
     Attention is next directed to FIG. 4 which is in an expanded isometric view of FIG. 2, less the battery cap and the batteries. Shown thereon are reflector  14  with edge  12  and integral therewith is one-half of a light housing  25  at the top and at the bottom a one-half  40  of a battery and handle. The reflector in this case is red and has white lettering spelling the word “STOP” thereon. 
     Also shown is the back side  48  which includes reflector  52  with edge  54 . Integral therewith is a half  55  of light  22 . At the lower side of edge  54  is one half  41  of the battery housing. In the interest of making this waterproof, there is a groove  20  on the inside portion of edge  54  into which O-ring seal  60  is placed. 
     In assembly, lens retainer  57  and lens  53  are secured to cylinder  55  and lens  26  and lens retainer  24  are screwed onto half light housing  25 . An electric wire  80  is run from the power line  80  from the switch to the base of the bulb  27 . The ground line (not shown) goes from the plus end on the bulb to the negative side of the battery to the cone of the bulb. Then O-ring  60  is placed into groove  20  and edges  12  and  54  are abutted against each other as shown in FIG. 3 with the seal secured in the groove  20 . Half handles  41  and  40  are firmly pressed together and form a handle housing  30  as shown in FIG.  3 . 
     Half light cylinders  55  and  25  are positioned adjacent each other and will stay in that manner to form a light cylinder  22  after the edge  54  is secured to edge  12 . A first magnifying red lens  26  is positioned in half cylinder  25  and is held in position by lens retainer  24 . Likewise, magnifying lens  53  is held in position by waterproof retainer  57  which is threadedly fitted over half cylinder  55 . Lens  53  can be any desired color, however, it will normally be the same color as the color of the reflector  52  which is on the same side. As shown here, both reflectors  14  and  52  are red because they have the word STOP spelled out thereon. However, if reflector  52  has a SLOW sign there and is amber in color with the blue lettering then the magnifying lens  53  would be amber. In assembly, the O-ring  60  would be placed into groove  20  in edge  54  and firmly placed on top of the O-ring  60  would be edge  12 . This would be compact as shown in FIG.  3 . To hold them in place there are a plurality of holes  13  drilled through the edge  12  and are in line with each of a plurality of holes  15  drilled into edge  54 . Self-tapping screws  28  are inserted through holes  13  into hole  15  where they are screwed until they are secured in a normal manner. 
     After the device is thus assembled, threads  31  and  33  of the one-half battery housings form a complete threaded end of the housing onto which the cap  36  is screwed as shown in FIG.  1  and the device is fully assembled. 
     To briefly summarize, it is seen that I have a novel hand-held signal which has a front unitary side which has a first reflector which is integral to the first edge of a selected configuration which is normally octagonal. There is a second or back unitary side which mates with the front unitary side. Likewise, the back unitary side has a second reflector and a second edge. The front and back side at the bottom of the edge each has a half of a battery housing and each side has a half of a light cylinder housing which is made integral with the edge. The battery casing becomes the handle when the two sides are assembled. The two light half cylinders mate and form a light cylinder sufficient that one bulb can light each end thereof. There is a hollow space between the front side and the back side, thus electrical conduits can go from the battery to the light bulb. In a preferred embodiment, each reflector is concave which provides for the space just mentioned. Typically, the part of the reflectors  14  and  52  exposed after the device is assembled is smooth and the inside is knurled to obtain high reflecting capabilities. 
     The main components of each half, namely, the edge, the reflector, the half battery casing and half of the cylindrical light housing are molded integrally. This reduces the assembly time and makes it strong and resistant to weather. It is estimated that the weight of one of these preferred assembled signals will be not over about 2¼ pounds. The prior lighting signals may exceed five pounds. Traditionally, weight tires the workers out much quicker. 
     Thus, it is apparent that there has been provided, in accordance with the invention, a hand-held safety signal that fully satisfies the objects, aims and advantages set forth above. While the invention has been described in conjunction with specific embodiments thereof, it is evident that many alternatives, modifications and variations will be apparent to those skilled in the art and in light of the foregoing description. Accordingly, it is intended to embrace all such alternatives, modifications and variations as fall within the spirit of the appended claims.