Connect public, paid and private patent data with Google Patents Public Datasets

Method of making reflecting signs by laminating

Download PDF

Info

Publication number
US2568126A
US2568126A US61001145A US2568126A US 2568126 A US2568126 A US 2568126A US 61001145 A US61001145 A US 61001145A US 2568126 A US2568126 A US 2568126A
Authority
US
Grant status
Grant
Patent type
Prior art keywords
spheres
laminae
sign
body
platen
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
Inventor
Armand E Keeley
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Prismo Products Inc
Original Assignee
Prismo Products Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Grant date

Links

Images

Classifications

    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09FDISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F13/00Illuminated signs; Luminous advertising
    • G09F13/16Signs formed of or incorporating reflecting elements or surfaces, e.g. warning signs having triangular or other geometrical shape
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
    • G02B5/00Optical elements other than lenses
    • G02B5/12Reflex reflectors
    • G02B5/126Reflex reflectors including curved refracting surface
    • G02B5/128Reflex reflectors including curved refracting surface transparent spheres being embedded in matrix
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T156/00Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/10Methods of surface bonding and/or assembly therefor
    • Y10T156/1089Methods of surface bonding and/or assembly therefor of discrete laminae to single face of additional lamina
    • Y10T156/109Embedding of laminae within face of additional laminae

Description

SePt- 18, 1951 A. E. KEELEY C 2,568,126

METHOD OF' MAKING REFLECTING SIGNS BY LAMINATING Filed Aug. lO, 1945 CCCC CCC C CCCC /0 CCC /z CCCC CO COC O CCCCC @Q m95 00000000000000 F974 /2 ,s I' /2 /7 /2 l v 4 f, f /3 7 //f/. ws's'osm /0 INVENTOR.

ATTORNEY.

Patented Sept.v 18, 1,951

METHOD F MAKING BEFLECTING SIGNS BY LAMINATING Armand E. Kceiey, Huntingdon, Pa., assignor to Priamo Products, tion of New York Inc. Dayton, Ohio, a corpora- Appumio Anm: 1o, 1945, serial No. 610,011

2 claim. (o1. 154-123) This invention relates to reflecting signs and markers and the method of producing the same, and more particularly to upright signs of the type in which reflex reecting elements, such as translucent spheres, are partially embedded in a binder or. body of material having reflecting properties.

One object of the invention is to provide such a sign which can be quickly and easily produced in any desired form.

A further object of the invention is to provide such a sign which can be produced in a completed form by a single operation.

A further object of the invention is to provide such a sign which is of a durable character and will have a long useful life.

A further object of the invention is to provide such a sign which will reflect the light in different colors depending upon the angle at which the light enters the reflecting elements.

A further object of the invention is to provide such a sign which will sharplydeflne Va figure to be displayed.

A further object of the invention is to provide a method by which such a sign can be quickly and economically produced.

Other objects of the invention may appear as the sign and method aredescribed in detail.

In the accompanying drawings, which are on a greatly exaggerated scale, Fig. 1 is al planvview, partly broken away, of a platen used in producing the sign; Fig. 2 is a sectional view of the platen, partly broken away, illustrating the method of introducing the translucent spheres into cavities in the platen; Fig. 3 is a transverse section, partly broken away, showing the platen, spheres and plastic laminae assembled prior to the molding operation; Fig. 4 is a similar section showing the assembly in the press; Fig. 5 is a transverse section of a portion of a completed sign; Figs. 6 and 7 are fractional sections showing different relations between a sphere and a colored stratum in the molded sign; Fig. 8 is an elevation of a portion of a sign showing the latter provided with an unreectorized figure; Fig. 9 is a section through a portion ofthe platen illustrating the method of securing the unreilectorized surface; and Fig. 10 is a section taken on the line Ill-I0 of Fig. 8. v

In these drawings I have illustrated certain preferred embodiments of the invention and the method of producing the same. The illustrated embodiments are upright signs but 'it is to be understood. that the invention and the several parts thereof may take various forms and may be embodied in signs or markers of various kinds.

The term sign, as used herein, is intended to include signs, markers or displays of any kind to which the invention may be applied.

'I'he sign comprises 'a supporting member or body in which the translucent elements are partially embedded, the body having reflecting properties so that light entering the elements will be reected back to its source. The body may be of any suitable size and shape, as determined by the character of the sign, and is preferably of such thickness and rigidity as to be self-supporting in an upright position. The body is formed of a plastic material which can be molded about portions of the translucent reecting ele'- ments to form a one piece structure in which the reflecting elements are securely retained. It is preferably formed from a plurality of laminae or layers of plastic material which are united one with the other and `with the reflecting elements by heat and pressure, whereby the laminae become strata in a one piece structure. The reflecting elements are preferably spheres of glass, or other suitable translucent material.' of uniform diameter, usually from .002 of an inch to .030 of an inch.

\ The translucentI elements and the plastic material may be assembled and subjected. to heat and pressure to form a unitary structure in any suitable manner. In accordance with the present method a platen I0 of 4,the desired size and shape, and preferably of steel, is provided` inthe upper surface thereof with amultiplicity of cavities Il, to receive the translucent elements I2 and support the same in predetermined positions with relation one to the other. When,v as preferred, the elements are spherical in form, they should be embedded in the body of the sign for at least half of their diameters in order that they may be securely retained therein. Therefore the cavities II are shown as conforming to the shape of the spheres and of a depth less than half of the diameter of the spheres, say from twenty-five percent tol forty percent of` said diameter. The spheres may be inserted in the cavities in any suitable manner, as by supporting the platen in a slightly inclined position and iiowing a quantity of spheres over the same until the spheres have entered` and are retained in all the cavities, the excess spheres falling fromthe lower edge of the platen. y

'I'he platen 'with thespheres in the cavities is then movedvto a horizontal position and plastic material-is supeiposed` von jthe spheres. The plasticv material is'preferably in sheet form and may conveniently consist of sheets of paper or other suitable thin material which have been impregnated with a plastic, such as a resin. A plurality of sheets or laminae I3 of the plastic are superposed on the spheres in sufficient number to form a body of the desired thickness when they have been united by heat and pressure. The platen I with the spheres and plastic laminae -assembled thereon is then subjected to heat and .pressure to soften the plastic, press the same about the spheres and into-contact with the surface of the platen between the spheres and to unite the laminae one with the, other and with the spheres in an integral structure. This may be accomplished by placing the assembled platen, spheres and laminae between the heated platens I4 of a hydraulic press, as shown in Fig. 4, and subjecting the same to the heat and pressure necessary to the unification thereof. It is desirable that those laminae adjacent to the platen I0 should be rich in plastic so that the latter may, under the influence of heat and pressure, fiow completely about and into contact with all parts of the exposed surfaces of the spheres. After the laminae have been merged into a unitary structure and have solidified, the completed sign is removed from the press and from the platen I0, as shown in Fig. 5.

The plastic body may be of any desired color having the necessary reflectivity and the light will be reflected in the color of the plastic. The light may be reected in different colors by providing plastic of different colors in different parts of the body. In Figs. 3, 4 and 5 the arrangement is such that light entering the spheres on lines substantially normal to the front surface of the body will be reflected in one color and light entering the spheres at an acute angle will be reflected in another color. For this purpose the solidied plastic body is provided with strata of different colors, the stratum with which the rearmost surfaces of the spheres contact being of a color different from the color of the stratum in front thereof and through which the spheres extend. This may be accomplished by interposing in the stack of laminae, prior to the heating and pressing operation, one or more laminae l5 of a desired color, for example, silver color, the other laminae I3 in front of the laminae I5 and through which the spheres will extend being of another color, for example yellow, so that when the plastic is solidified these laminae constitute strata of different colors. In the arrangement illustrated the silver stratum is an intermediate stratum but it could be the rear stratum because the color of those parts of the body with which the spheres do not contact have no affect on the color of the reflected light. It is only necessary that the silver stratum be placed that it will extend forwardly from the rearmost A surfaces of the spheres a distance sufiicient to outlined by light directed onto the sign. In the such a distance from the front surface of the body that, in the completed sign, the rearmost surfaces of the spheres will extend into but not beyond the same. Thus light entering the spheres at an angle of approximately ninety degrees to the front surface of the body will be reflected by the silver stratum in a cone-shaped pattern, as shown at I6 in Fig. 5, and the light entering the spheres at an acute angle will be reflected by the yellow stratum through which the spheres extend. Therefore the color in which the sign appears will depend on the angle of vision of the observer. The angle of the cone in which the light from the silver stratum is refiected depends upon the area of the contact between the sphere and the silver stratum and may be predetermined for a given sign by providing a silver colored stratum of such thickness arrangement illustrated in Fig. 8 portions of the spheres, I2a, are arranged in lines so spaced with relation one to the other as to expose portions of the front surface of the plastic body conforming to the letter A. The unreectorized portions of the surface of the body are thus sharply defined by the illuminated spheres and by giving the exposed portions of the surface a color substantially different from the color of the other portions of the front surface of the body the figure so outlined may be rendered clearly visible in daylight aswell as at night.

The unreflectorized surfaces constituting the figure may be provided in any suitable manner but it is desirable that these exposed surfaces shall be smooth, and the removal of the spheres from the cavities in the platen, prior to molding, to form the figure would leave those surfaces rough and, further, it would be a tedious operation owing to the small size of the spheres. 'I'herefore I prefer to fill the cavities in those portions of the platen corresponding to the surface or surfaces to be exposed with material which will prevent spheres from entering the same and will be substantially fiush with the adjacent portions of the platen surface after being subjected to heat and pressure. This may be satisfactorily accomplished by filling the selected cavities with a metal I 'I, preferably in powdered or granulated form, having a, melting point lower than the melting point of the metal of the platen and which will be fused in and fill the cavities when subjected to the heat and pressure of the molding operation, such as ordinary white metal or babbitt. As shown in Fig. 9, a portion of the cavities are filled with the metal to a level slightly above the surface of the platen so that when fused it will completely fil1 the cavities and the corresponding surface of the molded body will be smooth, as shown at IB in Fig. 10.

A sign produced in accordance with the invention comprises a one piece supporting structure in which the reflecting elements are firmly embedded and is so formed by a single operation and at a low cost. Due to this integral construction and to the fact that the plastic body is highly resistant to weather there is little likelihood of the reflecting elements being loosened and falling out of the body and the body has a long life.

While I have shown and described certain embodiments of my invention and the preferred method of producing the same, I wish it to be understood that I do not desire to be limited to the details thereof as various modifications may occur to a, person skilled in the art.

Having now fully described my invention, what I claim as new and desire to secure by Letters Patent, is:

l. A method of producing a refiecting sign, which comprises supporting a, plurality of translucent spheres in fixed positions substantially in a common plane and with the lower portion of each sphere enclosed in a rigid supporting member, superposing on said spheres a, plurality of relatively thin laminations of resinous material and subjecting said laminae and said spheres to heat and pressure to soften said laminae and unite the same one with the other, to embed the upper portion of said spheres in said laminae and to thereby unite said laminae and said spheres in a unitary solid structure.

2. A method of producing a reflecting sign, which comprises supporting a plurality of translucent spheres in xed positions substantially in a common plane and with the lower portion only of each sphere enclosed in a rigid supporting member, superposing on said spheres a plurality of relatively thin iaminations of resinous material, at least one of said laminae above the lower lamina being of a color diierent from the color of said lower lamina., subjecting said spheres and laminae to heat and pressure to soften said laminae and unite the same one with the other, to press said laminae about the upper portions of said spheres until the uppermost surfaces of said spheres enter said differently colored lamina, and to thereby unite said laminae and said 6. spheres in a unitary mass with the lower portions of said spheres projecting beyond the lower surface of said united laminae.

ARMAND E. KEELEY.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,308,330 Brown July 1, 1919 1,400,855 Bertron Dec. 20, 1921 1,997,500 Swarovski Apr. 9, 1935 2,033,288 Kmicie Mar. 10, 1936 2,069,319 Lounsbury et al Feb. 2, 1937 2,181,573 Bunker Nov. 28, 1939 2,252,504 Hahn Aug. 12, 1941 2,289,084 Temple July 7, 1942 2,326,634 Gebhard et al Aug. 10, 1943 2,354,018 Heltzer et al July 18, 1944 2,379,702 Gebhard July 3, 1945 2,379,741 Palmquist July 3, 1945 2,454,719 Scogland Nov. 23, 1948

Claims (1)

1. A METHOD OF PRODUCING A REFLECTING SIGN, WHICH COMPRISES SUPPORTING A PLURALITY OF TRANSLUCENT SPHERES IN FIXED POSITIONS SUBSTANTIALLY IN A COMMON PLANE AND WITH THE LOWER PORTION OF EACH SPHERE ENCLOSED IN A RIGID SUPPORTING MEMBER, SUPERPOSING ON SAID SPHERES A PLURALITY OF RELATIVELY THIN LAMINATIONS OF RESINOUS MATERIAL AND SUBJECTING SAID LAMINAE AND SAID SPHERES TO HEAT AND PRESSURE TO SOFTEN SAID LAMINAE AND UNITE THE SAME ONE WITH THE OTHER, TO EMBED THE UPPER PORTION OF SAID SPHERES IN SAID LAMINAE AND TO THEREBY UNITE SAID LAMINAE AND SAID SPHERES IN A UNITARY SOLID STRUCTURE.
US2568126A 1945-08-10 1945-08-10 Method of making reflecting signs by laminating Expired - Lifetime US2568126A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US2568126A US2568126A (en) 1945-08-10 1945-08-10 Method of making reflecting signs by laminating

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US2568126A US2568126A (en) 1945-08-10 1945-08-10 Method of making reflecting signs by laminating

Publications (1)

Publication Number Publication Date
US2568126A true US2568126A (en) 1951-09-18

Family

ID=24443242

Family Applications (1)

Application Number Title Priority Date Filing Date
US2568126A Expired - Lifetime US2568126A (en) 1945-08-10 1945-08-10 Method of making reflecting signs by laminating

Country Status (1)

Country Link
US (1) US2568126A (en)

Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2714559A (en) * 1950-03-27 1955-08-02 Us Plywood Corp Coated plastic sheet and method of making same
US2911318A (en) * 1956-04-04 1959-11-03 Western Electric Co Shock-resistant, adhesive tapes
US3141756A (en) * 1962-01-16 1964-07-21 Corning Glass Works Glass forming element and method of manufacture
US3155764A (en) * 1960-03-24 1964-11-03 Karl W Flocks Flexible weatherproof reflex light reflector sheet and sign made thereof
US3185555A (en) * 1960-05-18 1965-05-25 American Optical Corp Electronic devices and method of making same
US3190178A (en) * 1961-06-29 1965-06-22 Minnesota Mining & Mfg Reflex-reflecting sheeting
US3274888A (en) * 1962-01-19 1966-09-27 Minnesota Mining & Mfg Inorganic reflex-reflective aggregate
US3279316A (en) * 1962-03-26 1966-10-18 California Metal Enameling Com Reflex reflecting article for use as a sign or the like
US3308226A (en) * 1963-11-08 1967-03-07 Luther G Simjian Mosaic construction
US3318594A (en) * 1964-01-08 1967-05-09 Gen Electric Gripping device
US3413058A (en) * 1964-07-09 1968-11-26 Minnesota Mining & Mfg Reflex-reflecting articles
US3922433A (en) * 1971-03-01 1975-11-25 Aluminum Co Of America Aluminous metal with glass beads bonded to a metal substrate
US3965598A (en) * 1974-11-14 1976-06-29 J. J. Avery, Inc. Identification device and method of making same
US4486073A (en) * 1978-06-20 1984-12-04 Boyd Michael D Radiant energy reflecting structures
US4503776A (en) * 1980-12-02 1985-03-12 Diehl Gmbh & Co. Fragmentation body for fragmentation projectiles and warheads
US4725494A (en) * 1982-09-02 1988-02-16 Minnesota Mining And Manufacturing Co. Retroreflective sheeting
WO1999036805A1 (en) * 1998-01-13 1999-07-22 Minnesota Mining And Manufacturing Company Retroreflective dichroic reflector
WO1999036806A1 (en) * 1998-01-13 1999-07-22 Minnesota Mining And Manufacturing Company Reflective article with concealed retroreflective pattern
US6166856A (en) * 1997-06-16 2000-12-26 3M Innovative Properties Company Self light-emitting retroreflective sheet and method for producing the same
US6172810B1 (en) 1999-02-26 2001-01-09 3M Innovative Properties Company Retroreflective articles having polymer multilayer reflective coatings
US20040013856A1 (en) * 2002-04-18 2004-01-22 Yoshinori Araki Reflective articles and method of making
WO2004113970A1 (en) * 2003-06-17 2004-12-29 Autoadesivi S.P.A. Retroreflective and partially retroreflective articles and associated production methods
US8689669B2 (en) * 2003-04-30 2014-04-08 Bofors Defence Ab Method of producing warheads containing explosives

Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1308330A (en) * 1919-07-01 new jebsey
US1400855A (en) * 1920-02-25 1921-12-20 Bertron Ernest Sign luminous by reflection
US1997500A (en) * 1931-06-09 1935-04-09 Swarovski Daniel Method of manufacturing new articles of jewelry and ornaments
US2033288A (en) * 1936-03-10 Ornament
US2069319A (en) * 1934-03-21 1937-02-02 Charles E Lounsbury Sign
US2181573A (en) * 1936-11-03 1939-11-28 Arthur U Magnan Means for affixing jewels in perforated plates
US2252504A (en) * 1939-07-24 1941-08-12 Automatic Button Company Method of mounting lenses in illuminated signs, etc.
US2289084A (en) * 1941-04-09 1942-07-07 Fred W Temple Method of making luminous signs
US2326634A (en) * 1941-12-26 1943-08-10 Minnesota Mining & Mfg Reflex light reflector
US2354018A (en) * 1940-08-03 1944-07-18 Minnesota Mining & Mfg Light reflector sheet
US2379702A (en) * 1943-01-23 1945-07-03 Minnesota Mining & Mfg Reflex light reflector
US2379741A (en) * 1943-01-23 1945-07-03 Minnesota Mining & Mfg Reflex light reflector
US2454719A (en) * 1943-11-11 1948-11-23 Studebaker Corp Method of making cored laminated plastic sheets

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1308330A (en) * 1919-07-01 new jebsey
US2033288A (en) * 1936-03-10 Ornament
US1400855A (en) * 1920-02-25 1921-12-20 Bertron Ernest Sign luminous by reflection
US1997500A (en) * 1931-06-09 1935-04-09 Swarovski Daniel Method of manufacturing new articles of jewelry and ornaments
US2069319A (en) * 1934-03-21 1937-02-02 Charles E Lounsbury Sign
US2181573A (en) * 1936-11-03 1939-11-28 Arthur U Magnan Means for affixing jewels in perforated plates
US2252504A (en) * 1939-07-24 1941-08-12 Automatic Button Company Method of mounting lenses in illuminated signs, etc.
US2354018A (en) * 1940-08-03 1944-07-18 Minnesota Mining & Mfg Light reflector sheet
US2289084A (en) * 1941-04-09 1942-07-07 Fred W Temple Method of making luminous signs
US2326634A (en) * 1941-12-26 1943-08-10 Minnesota Mining & Mfg Reflex light reflector
US2379702A (en) * 1943-01-23 1945-07-03 Minnesota Mining & Mfg Reflex light reflector
US2379741A (en) * 1943-01-23 1945-07-03 Minnesota Mining & Mfg Reflex light reflector
US2454719A (en) * 1943-11-11 1948-11-23 Studebaker Corp Method of making cored laminated plastic sheets

Cited By (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2714559A (en) * 1950-03-27 1955-08-02 Us Plywood Corp Coated plastic sheet and method of making same
US2911318A (en) * 1956-04-04 1959-11-03 Western Electric Co Shock-resistant, adhesive tapes
US3155764A (en) * 1960-03-24 1964-11-03 Karl W Flocks Flexible weatherproof reflex light reflector sheet and sign made thereof
US3185555A (en) * 1960-05-18 1965-05-25 American Optical Corp Electronic devices and method of making same
US3190178A (en) * 1961-06-29 1965-06-22 Minnesota Mining & Mfg Reflex-reflecting sheeting
US3141756A (en) * 1962-01-16 1964-07-21 Corning Glass Works Glass forming element and method of manufacture
US3274888A (en) * 1962-01-19 1966-09-27 Minnesota Mining & Mfg Inorganic reflex-reflective aggregate
US3279316A (en) * 1962-03-26 1966-10-18 California Metal Enameling Com Reflex reflecting article for use as a sign or the like
US3308226A (en) * 1963-11-08 1967-03-07 Luther G Simjian Mosaic construction
US3318594A (en) * 1964-01-08 1967-05-09 Gen Electric Gripping device
US3413058A (en) * 1964-07-09 1968-11-26 Minnesota Mining & Mfg Reflex-reflecting articles
US3922433A (en) * 1971-03-01 1975-11-25 Aluminum Co Of America Aluminous metal with glass beads bonded to a metal substrate
US3965598A (en) * 1974-11-14 1976-06-29 J. J. Avery, Inc. Identification device and method of making same
US4486073A (en) * 1978-06-20 1984-12-04 Boyd Michael D Radiant energy reflecting structures
US4503776A (en) * 1980-12-02 1985-03-12 Diehl Gmbh & Co. Fragmentation body for fragmentation projectiles and warheads
US4725494A (en) * 1982-09-02 1988-02-16 Minnesota Mining And Manufacturing Co. Retroreflective sheeting
US6166856A (en) * 1997-06-16 2000-12-26 3M Innovative Properties Company Self light-emitting retroreflective sheet and method for producing the same
WO1999036805A1 (en) * 1998-01-13 1999-07-22 Minnesota Mining And Manufacturing Company Retroreflective dichroic reflector
WO1999036806A1 (en) * 1998-01-13 1999-07-22 Minnesota Mining And Manufacturing Company Reflective article with concealed retroreflective pattern
US6024455A (en) * 1998-01-13 2000-02-15 3M Innovative Properties Company Reflective article with concealed retroreflective pattern
US6157486A (en) * 1998-01-13 2000-12-05 3M Innovative Properties Company Retroreflective dichroic reflector
US6172810B1 (en) 1999-02-26 2001-01-09 3M Innovative Properties Company Retroreflective articles having polymer multilayer reflective coatings
US6224219B1 (en) 1999-02-26 2001-05-01 3M Innovative Properties Company Method for making retroreflective articles having polymer multilayer reflective coatings
US6243201B1 (en) 1999-02-26 2001-06-05 3M Innovative Properties Company Retroreflective articles having polymer multilayer reflective coatings
US6350034B1 (en) 1999-02-26 2002-02-26 3M Innovative Properties Company Retroreflective articles having polymer multilayer reflective coatings
US20040013856A1 (en) * 2002-04-18 2004-01-22 Yoshinori Araki Reflective articles and method of making
US8689669B2 (en) * 2003-04-30 2014-04-08 Bofors Defence Ab Method of producing warheads containing explosives
WO2004113970A1 (en) * 2003-06-17 2004-12-29 Autoadesivi S.P.A. Retroreflective and partially retroreflective articles and associated production methods

Similar Documents

Publication Publication Date Title
US3190178A (en) Reflex-reflecting sheeting
US3653138A (en) Contrasting background display
US2053173A (en) Shadow producing screen for luminous projections and other applications and process for its manufacture
US2240072A (en) Translucent laminated article
US3953625A (en) Process for making indicia bearing anodized article
US2378252A (en) Projection screen
US3545380A (en) Identification and printing device with fraud preventing means
US2543800A (en) Reflex light reflector
US2432896A (en) Retroreflective animation display
US3365350A (en) Three dimensional picture
US20020018879A1 (en) Hidden image game piece
US4554565A (en) Method of producing reversible thermochromic display
US4663214A (en) Phosphorescent material and process of manufacture
US5106126A (en) Process printed image with reflective coating
US2143946A (en) Method of manufacturing signs and other display devices
US2383884A (en) Colored reflex light reflector
US6663252B1 (en) Automotive display panel
US2248638A (en) Sheet material with prismatic surfaces
US3802944A (en) Retroreflective sheeting
US2069368A (en) Display advertising device
US2379741A (en) Reflex light reflector
US2602036A (en) Method of making transilluminated plates
US2556798A (en) Three-dimensional exhibit
US2588067A (en) Identification card
US2205466A (en) Process for making decorative material