US 3510644 A
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Description (OCR text may contain errors)
y 5; 1970 w. E. BR'AESE 3,510,644,
PLASTIC RING ASSEMBLY Filed Aug. 4, 1967 INVENTOR.
WILLIAM E. BRAESE United States Patent "ice US. Cl. 240-10.6 4 Claims ABSTRACT OF THE DISCLOSURE Each ring assembly includes a relatively large diameter clock face ring of transparent material having a gummed back, from which one can remove the protective covering ring so that pressure sensitive adhesive is exposed permitting application of the ring to an aviators clock face with the numbers 13 to 24 on this ring at the regularly spaced intervals similar to the l to 12 numerals on the face of the clock, so that the aviator can read the hours instantly in terms of 13 to 24 from 1 pm. on without having to do any mental arithmetic. The secondary set of numerals appear radially inwardly with respect to the other set on the clock face for instant reading of any time--a.m. or p.m. Integral with each clock face ring are two other rings of smaller diameters in concentric relation die-cut to be separable readily from one another upon breakage of a few narrow webs at widely spaced points circumferentially of the rings, these inner rings being of predetermined internal and external diameters to be useful as battery adaptor rings in flashlights in an emergency in the event a cell goes dead and the aviator doesnt happen to have the right size cell to insert in the flashlight and must, therefore, make an undersized cell do duty until the proper sized one or ones can be supplied, these emergency rings being easily stored in the flashlight case behind the reflector or inside the screw-on cap so as to be certain of being available for immediate use when needed.
This invention relates to a plastic ring assembly, which while especially designed for use by aviators, because of the urgent need the battery adaptor rings will fill in an emergency, is, or course, adapted for use by others also, wherever and whenever the ability to utilize undersized battery cells, at least temporarily, might arise.
In the plastic ring assembly of my invention, a relatively large diameter outer ring of transparent plastic material has a gummed back from which one can remove a protective covering ring to expose pressure sensitive adhesive permitting application of the ring to the face of an aviators clock within the circle of the numerals l to 12 thereon and enable use of the numerals 13 to 24 provided on the ring in uniformly spaced relation for the aviator to read the time instantly in terms of 13 to 24 from 1 pm. on without having to do any quick mental arithmetic while there are other more pressing problems on his mind. The clock face ring, when die-cut of clear transparent plastic sheet material, would necessitate wasting of a fairly large diameter disk of the material, but that is avoided in accordance with my invention by the die-cutting, at the same time, of two inner concentric rings, each having the internal and external diameters thereof in proper relationship to standard sizes of battery cells and flashlight cases so these rings may be used as battery adaptor rings in flashlights, the inner rings being connected to each other and to the outer ring by a few narrow widely spaced webs that can be easily broken when separating the inner rings from the outer one and from one another. These adaptor rings may be stored 3,510,644 Patented May 5, 1970 inside the flashlight case at opposite ends so as to be available for immediate use whenever an emergency arises.
The invention is illustrated in the accompanying drawing, in which:
FIG. 1 is a face view of an aviators clock showing the adaptor ring of my invention bearing the numerals 13 to 24 properly applied to the face thereof;
FIG. 2 is a cross-section 0n the line 22 of FIG. 1;
FIGS. 3, 4, and 5 are perspective views, FIG. 3 showing the complete three ring assembly, and FIGS. 4 and 5 the detached inner rings useful as battery adaptor rings;
FIG. 6 is an edge-wise view of the clock face ring shown in FIGS. 1 and 3 with the thickness thereof exaggerated enough to enable better illustration of the removable protective ring on the back covering the pressure sensitive adhesive provided on that ring;
FIG. 7 is a cross-section through a flashlight battery using conventional battery cells but having stored in the opposite ends of the case battery adaptor rings like that shown in FIG. 4 for use in an emergency;
FIG. 8 is a similar section showing the emergency battery adaptor rings shown in FIG. 7 in use for undersize battery cells, and
FIG. 9 is a similar section through another flashlight of a size that would normally utilize cells of the size shown in FIG. 8, "but utilizing smaller sized cells with adaptor rings of the smaller size shown in FIG. 5.
Similar reference numerals are applied to corresponding parts throughout the views.
Referring to the drawing, the reference numeral 10 in FIG. 3 designates the plastic ring assembly that is die-cut from clear transparent sheet plastic material to provide ultimately three rings 11, 12, and 13, the largest one 11 being the ring shown in FIGS. 1, 2, and 6 applicable to the cover glass 14 on the face of an aviators clock preferably by means of pressure sensitive adhesive 15 when the protective covering ring 16 shown in FIG. 6 has been stripped off. This ring 11, after removal from the assembly 10, has the pressure sensitive adhesive 15 and protective covering ring 16 applied to the back thereof, and has applied to its front face a secondary set of clock numerals 13 to 24 imprinted in uniformly spaced relation around the marginal portion thereof, as indicated at 17 in FIG. 1, to .be disposed radially inwardly with respect to the numerals 1 to 12 on the clock face 18, as indicated at 19, thereby enabling the aviator to read the ptm. times in terms of 13 to 24 and the am. times in terms of 1 to 12 without having to do any mental arithmetic. Thus, the clock hands 20 in FIG. 1 show the time as 4 am. or 16 pm, and the aviator reads this time directly without having to perform the mental arithmetic problem of adding 12 to 4 to arrive at the 16 required. With so many other things on his mind during flight, especially under trying circumstances, an aviator usually appreciates this convenience. The ring 11, being transparent, enables one to see the hands 20 through the ring 11 and the cover glass 14. The hour hand moves inside the circle of the numerals 13 to 24 so that it does not interfere in any way with the reading of any of these numerals.
The inner concentric rings 12 and 13 of the plastic ring assembly 10 when die-cut with the ring 11 are purposely left connected with the ring 11 and with one another by narrow webs 21 at widely spaced intervals of approximately these webs being narrow enough to enable easily breaking the same to separate the rings 12 and 13 from one another and from the ring 11, leaving small projections 21' on the inner and outer circumferences of ring 12 and on the outer circumference only of ring 13 at the three widely spaced points. These projections do not interfere at all with the use of the rings 12 and 13 as battery adaptor rings, but, in fact, are considered helpful in the sense that they insure a tighter fit in the bore of the flashlight case and on the circumference of the battery cell over which the rings must he slipped, as for example in entering the rings 12 in the flashlight case 22 in FIG. 8 to enable use of the undersize battery cells 23 where the larger cells 24 shown in FIG. 7 would normally be used. Up to the time the four rings 12 are to be used, two on each cell, in widely spaced parallel relation, they are adapted to be stored two in the front end, close together, and two in the rear end of the case, as shown in FIG. 7. FIG. 9 illustrates another flashlight where the case 22' is of a smaller size for which the battery cells 23, shown in FIG. 8, would norunally be used. However, in this case the cells 25, which are undersize for the battery case 22'. have adaptor rings 13 supporting the cells to enable emergency use of these undersize cells when it would otherwise be impossible to use the flashlight. Here again, the rings 13 will be stored, two in each end of the case 22', until a need arises for their use. Of course, there are many occasions when an aviator and others in similar emergencies will find battery adaptor rings of my invention very useful. Obviously, since four adaptor rings are needed for each flashlight, I may make adaptor ring assemblies of rings 12 and 13 alone, supplying these in sets of four to take care of two flashlights like those shown in FIGS. 8 and 9.
It is believed the foregoing description conveys a good understanding of the objects and advantages of my invention. The appended claims have been drawn to cover all legitimate modifications and adaptations.
1. An article of manufacture as set forth in claim 4 wherein the ring is die-cut from flat sheet plastic material to provide an outer ring of a larger diameter than the said other one and having numerals 13 to 24 in circumferentially spaced relation thereon at 30 intervals, this outer ring being adapted to be applied to the cover glass of an aviators clock in concentric relationship thereto and being detachably connected at circumferentially spaced points on its inner circumference with the said other ring designed for use in a flashlight as a battery cell adaptor ring.
2. In a flashlight comprising a tubular case adapted to receive a cylindrical battery cell with a close sliding fit, a bulb and reflector therefor mounted in and closing one end of said case, and a cap closing the other end of said case, the improvement which comprises a pair of adaptor rings for supporting in coaxial relation inside said case a cylindrical battery cell of smaller diameter than the inside of said case, the rings fitting closely internally on said smaller cell in widely spaced parallel relation and fitting closely externally on the inside of said case, each of said adaptor rings being detachably connected at circumferentially spaced intervals on one circumference with another adaptor ring of another size for use in a similar manner in another size flashlight with another size battery cell.
3. A flashlight as set forth in claim 2, wherein th rings are die-cut from plastic sheet material and the detachable connections are in the form of narrow Webs left along the line of cutting through the sheet material.
4. As an article of manufacture, a battery cell adaptor ring for use in a flashlight to adapt an undersize cylindrical battery cell for use in a cylindrical flashlight case,-
said article comprising a ring of flat material of an outside diameter equal to the inside diameter of the case, said ring being of an inside diameter equal to the outside diameter of the cell, the ring being die-cut from flat sheet plastic material, at least one other ring of a different size being die-cut in concentric relationship for use in a diiferent size case on a different size cell, the die-cut concentric rings being detachably connected at circumferentially spaced points by uncut narrow web portions.
References Cited UNITED STATES PATENTS 2,651,710 9/1953 Clark 24010.6 3,316,709 5/1967 Edwards 58-l27 X FOREIGN PATENTS 146,615 7/ 1920 Great Britain.
JOHN M. HORAN, Primary Examiner