EP0532656A4 - Interlocking plastic display - Google Patents
Interlocking plastic displayInfo
- Publication number
- EP0532656A4 EP0532656A4 EP19910911672 EP91911672A EP0532656A4 EP 0532656 A4 EP0532656 A4 EP 0532656A4 EP 19910911672 EP19910911672 EP 19910911672 EP 91911672 A EP91911672 A EP 91911672A EP 0532656 A4 EP0532656 A4 EP 0532656A4
- Authority
- EP
- European Patent Office
- Prior art keywords
- display device
- pads
- locking means
- top surface
- display
- 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.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F7/00—Signs, name or number plates, letters, numerals, or symbols; Panels or boards
- G09F7/16—Letters, numerals, or other symbols adapted for permanent fixing to a support
- G09F7/165—Letters, numerals, or other symbols adapted for permanent fixing to a support obtained by a treatment of the support
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F7/00—Signs, name or number plates, letters, numerals, or symbols; Panels or boards
Definitions
- the present invention relates to interlocking plastic displays and, more particularly, interlocking plastic displays having improved stability.
- U. S. Patent No. 4,835,890 the disclosure of which is here incorporated by reference, we disclosed an interlocking plastic display having t interlocking members.
- a first, display, member includes indicia formed therein, and a fi locking element formed beneath the indicia.
- the second, background, member included a second locking element configured to interlock with the first locking element.
- the fi locking element includes a portion of reduced depth, so that the first and second locki elements may interlock, with portions of each locking element underlying portions of t other locking element.
- the two members are made of different colored materials, so th they offer good contrast and ease of readability.
- a first, display, element includes indicia and a first locking member.
- T second, background, element includes a second locking member complementarily shap to conform to the shape of the first locking member.
- the first locking member has t portions.
- the first portion is a waffle plate which tapers from top to bottom.
- the seco portion includes a plurality of frusto-conical pads disposed beneath nodes of the waf plate of the second portion.
- a disp device comprising: a display member having a top surface and a bottom surface, s display member including indicia disposed on said top surface, and further including fi locking means disposed beneath said top surface; and a background member also havi a top surface and a bottom surface, said background member including second locki means configured to interlock with said first locking means; said first locking means havi first and second portions, each with top and bottom surfaces and a horizontal cross-secti said bottom surface of said first portion overlying at least part of said top surface of s second portion; said cross-section of said second portion being smaller than said cro section of said first portion; said second locking means substantially underlying at least of said first and second portions of said first locking means; whereby said display mem and said background member are locked together by the interlocking of said first second locking means.
- a display dev comprising a display member having a top surface and a bottom surface, said disp member including indicia disposed on said top surface, and further including first lock means disposed beneath said top surface; and a background member also having a surface and a bottom surface, said background member including second locking me configured to interlock with said first locking means; said first locking means havin waffle plate with a top surface, a bottom surface and a horizontal cross-section; said locking means further having a plurality of pads, each having a top surface and an ove horizontal cross-section; said bottom surface of said waffle plate overlying at least par said top surface of said plurality of pads; said cross-section of said plurality of pads be smaller than said cross-section of said waffle plate; said second locking means substanti underlying a portion of said first locking means; whereby said display member and s background member are locked together by the interlocking of said first and sec locking means.
- Fig. 1 is a vertical cross-section of a display device according to the invention.
- Fig. 2 is a bottom plan of the display member of the device of Fig. 1.
- Fig. 3 is bottom perspective of a portion of the display member of Fig. 2, shown part in cross-section.
- Fig. 4 is a bottom plan of a portion of a secondary embodiment of the displ member of the invention.
- Display device 10 includes a display member 12 and a background member 14. Th composition and possible methods of manufacture of inventive display device 10 ar essentially the same as described in our earlier referenced patent, and so are not furthe described in detail here.
- display member 12 includes three distinct layers, or portions. Th uppermost portion of display member 12 comprises indicia 16. The lower portion together comprise a first locking element 18.
- First locking element 18 includes an upper portion 20, having a tapered side wall 2 and a lower portion 24.
- background member 14 is configure to complement the structure of display member 12, so that display device 10 has generally rectangular overall vertical cross-section. This is not the only possibl embodiment, however. In other embodiments, not separately shown, background member 14 may n completely encapsulate the sides of display member 12, but rather may be co-termino therewith. Furthermore, the top of display member 12 and background member 14 ne not be co-planar. The possible alternative embodiments are also discussed in our earli patent, and so are not discussed further here.
- first locking element 18 hereof
- background member includes a second locking element 26 which differs form the analogous member of o patented device, the shape thereof is determined by the shape of first locking element 1 so no separate discussion thereof is believed necessary.
- FIG. 2 first locking element 18 is shown in further detail.
- Figure is a bottom plan view of display member 12, with indicia 16 omitted, for clarity.
- Whi indicia 16 and the remainder of display member 12 are described as though they a discrete components, it will be appreciated that, in fact, they together comprise a sing unitary element, in the preferred embodiment.
- Upper portion 20 is preferably formed as a waffle plate, having generally squa passages 28 therein.
- Upper portion 20 is generally similar to the first locking means described in our earli patent. The difference is the addition of lower portion 24.
- Lower portion 24 has a total cross-section substantially smaller than that of upp portion 20. As illustrated, in the most preferred embodiment, lower portion 24 compris a plurality of pads. It is further preferred that the pads of lower portion 24 be form as frusto-conical pads (see Fig. 3). In the preferred embodiment, passages 28 a approximately .090" on each side, with an eighteen degree (18°) taper per side, with t distance between adjacent passages set at .1875". Pads 30 are preferably .062" high, w a ten degree (10°) taper. The widest diameter of pads 30 is approximately .125", and t the smallest diameter would be approximately .103".
- Display device 10 is preferably manufactured in a molding operation in which disp member 12 is formed, and then placed in a mold where the material comprisi background member 14 is injected. That material flows about display member substantially encapsulating it. However, the bottom of lower portion 24 and the top indicia 16 contact the opposing sides of the mold, so that indicia 16 are not covered by t flowing material, and remain visible. Since lower portion 24 has such a relatively sm cross-section, more of background member 14 flows under display member 12; there importing greater structural resistance to warping. It will be appreciated that the illustrated design is not the only possible configuratio of the invention.
- first portion 20 may lead to the creation of a weakness in the structure of large sign. It could cause a "bend line", facilitating deformation of the display memb along a single line.
- Alternative constructions, not illustrated, could overcome this.
- upper portion 20 instead of forming upper portion 20 as a rectangular waffle plate, could be formed hexagonally, resembling a honeycomb, or with circular apertures therei
- alternate rows of a rectilinear structure may be offset.
- Thi embodiment is shown in Fig. 4, where elements similar to those of the preferre embodiment are denominated by primes. Such a construction would be more difficult an expensive to realize, but would probably be best performed in known fashion by electri discharge machining.
- pads 30 may vary depending on th application.
- the addition of pads 30 to the display device of our prior patent provides th superior strength which may be found in the instant device.
- the illustrated embodimen shows pads 30 positioned at alternating nodes 31 of upper portion 20. This positionin maximizes the surface area of pads 30 which contact upper portion 20, while minimizin the amount of volume to be removed from the mold which is used to form displa member 12.
- pads 30 In placing pads 30 in the desired structure, it is important to exceed minimum diameter on the surface of pad 30 which contacts upper portion 20 to facilitat the molding process, while also maintaining a degree of integrity of the shape of pads 3 during the remainder of the molding process during which background member 14 i fabricated. If too many pads 30 are used, the cost of the mold will be increased, and th flow of the molded background material could be impeded. All of the application- specifi parameters would be easily understood and implemented by the ordinary artisan skille in the practice of injection molding, and so no further specific teachings thereon ar believed necessary.
- pads 30 should be calculated so that t total volume of pads 30 is approximately equal to the total volume of the material whi forms indicia 16. This will tend to equalize the flow of background material about displ member 12, thereby minimizing warpage.
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US53444790A | 1990-06-06 | 1990-06-06 | |
PCT/US1991/004003 WO1991019285A1 (en) | 1990-06-06 | 1991-06-06 | Interlocking plastic display |
US534447 | 1995-09-27 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0532656A1 EP0532656A1 (en) | 1993-03-24 |
EP0532656A4 true EP0532656A4 (en) | 1993-06-02 |
EP0532656B1 EP0532656B1 (en) | 1997-09-03 |
Family
ID=24130078
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP91911672A Expired - Lifetime EP0532656B1 (en) | 1990-06-06 | 1991-06-06 | Interlocking plastic display |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0532656B1 (en) |
AU (1) | AU8061091A (en) |
CA (1) | CA2111120C (en) |
DE (1) | DE69127542T2 (en) |
WO (1) | WO1991019285A1 (en) |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA685004A (en) * | 1964-04-21 | E. Clough Robert | Slide mounts | |
US954924A (en) * | 1909-10-21 | 1910-04-12 | Edward J Brooks | Dating nail-seal. |
US2607957A (en) * | 1951-01-02 | 1952-08-26 | Elmer L Danielson | Method for forming a composite plastic structure |
US2609570A (en) * | 1951-01-22 | 1952-09-09 | Elmer L Danielson | Method for forming a multipart plastic article |
FR1070202A (en) * | 1953-01-30 | 1954-07-20 | Tiflex Ets | Indicator plate and its manufacturing process |
US3973344A (en) * | 1973-08-29 | 1976-08-10 | Multi-Slide Corporation Ltd. | Multi-image slide mount |
-
1991
- 1991-06-06 EP EP91911672A patent/EP0532656B1/en not_active Expired - Lifetime
- 1991-06-06 WO PCT/US1991/004003 patent/WO1991019285A1/en active IP Right Grant
- 1991-06-06 AU AU80610/91A patent/AU8061091A/en not_active Abandoned
- 1991-06-06 DE DE69127542T patent/DE69127542T2/en not_active Expired - Fee Related
- 1991-06-06 CA CA002111120A patent/CA2111120C/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
DE69127542T2 (en) | 1998-01-22 |
CA2111120A1 (en) | 1991-12-12 |
WO1991019285A1 (en) | 1991-12-12 |
EP0532656A1 (en) | 1993-03-24 |
DE69127542D1 (en) | 1997-10-09 |
AU8061091A (en) | 1991-12-31 |
CA2111120C (en) | 2000-01-18 |
EP0532656B1 (en) | 1997-09-03 |
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