US3636915A - Rotary prism display - Google Patents

Rotary prism display Download PDF

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Publication number
US3636915A
US3636915A US825898A US82589869A US3636915A US 3636915 A US3636915 A US 3636915A US 825898 A US825898 A US 825898A US 82589869 A US82589869 A US 82589869A US 3636915 A US3636915 A US 3636915A
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US
United States
Prior art keywords
cover
indicia
prism
display
image
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
US825898A
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English (en)
Inventor
Albert L Ruppert
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.)
Oak Electro Netics Corp
Original Assignee
Oak Electro Netics Corp
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
Application filed by Oak Electro Netics Corp filed Critical Oak Electro Netics Corp
Priority to US825898A priority Critical patent/US3636915A/en
Priority to CA057347A priority patent/CA937078A/en
Priority to DE19691936682 priority patent/DE1936682B2/de
Priority to FR6925354A priority patent/FR2016821A1/fr
Priority to GB37439/69A priority patent/GB1278055A/en
Priority to ZA702338A priority patent/ZA702338B/xx
Priority to NL7007226A priority patent/NL7007226A/xx
Application granted granted Critical
Publication of US3636915A publication Critical patent/US3636915A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B5/00—Visible signalling systems, e.g. personal calling systems, remote indication of seats occupied
    • G08B5/02—Visible signalling systems, e.g. personal calling systems, remote indication of seats occupied using only mechanical transmission
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/04—Prisms
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F13/00—Illuminated signs; Luminous advertising
    • G09F13/16—Signs formed of or incorporating reflecting elements or surfaces, e.g. warning signs having triangular or other geometrical shape
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/16—Indicators for switching condition, e.g. "on" or "off"
    • Y—GENERAL 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S200/00—Electricity: circuit makers and breakers
    • Y10S200/47—Light guides for switch indicators, e.g. prisms, reflectors or cables
    • Y—GENERAL 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/20—Control lever and linkage systems
    • Y10T74/20576—Elements
    • Y10T74/20732—Handles
    • Y10T74/20834—Hand wheels
    • Y10T74/2084—Knob or dial

Definitions

  • the display takes the form of a transparent circular prism which reflects a legend attached to the periphery of the prism to the viewer.
  • the legend may be viewed both from the periphery of the display and, by reflection, from the front.
  • the display can be basically a one-piece molded part and the legends and colors on the periphery can be easily changed.
  • the display can operate on ambient light, although in some instances electrical illumination may utilized.
  • One purpose of the invention is a display of the type described in which both color, written indicia or graphic designs may be changed upon movement of the display.
  • Another purpose is a display of the type described using more than one circular prism.
  • Another purpose is a display device that lends itself to omamental variations.
  • FIG. 2 is a cross section of a rotary indicator embodying the principles of the present invention
  • FIG. 3 is a front elevation of the indicator shown in FIG. 2,
  • FIG. 7 is a side elevation, partly in section, of a rotary in-- dicator wherein the prism display is separate from the rotating means
  • FIG. 9 is a side elevation, partly in section, of an indicator construction similar to that shown in FIG. 7 with a rotary window indexing ring,
  • FIG. 10 is a front elevation of the indicator construction shown in FIG. 9,
  • FIG. 23 is a cross section of a rotary indicator having a convex front face
  • FIG. 24 is a cross section of a rotary indicator construction similar to that shown in FIG. 7 with incandescent light illumination,
  • FIG. 26 is a section along plane 26-26 of FIG. 27,
  • FIG. 27 is a front elevation of the indicator shown in FIG. 26,
  • FIGS. 28 and 29 show a thumb wheel assembly
  • FIG. 30 is a cross section of a modified indicator using the combination of color and numerical indicia
  • FIG. 31 is a perspective, with portions broken away, of the indicator in FIG. 30,
  • FIG. 33 is a section along plane 3333 of FIG. 32.
  • FIG. 34 is a vertical section through a further modified form of rotary display device.
  • a conventional prism 10 may be constructed of glass, plastic or other suitable transparent material.
  • the prism 10 consists of three intersecting surfaces l2, l3 and 14, with surfaces 12 and 14 being perpendicular to one another and surface 13 defining a 45 angle with each of the surfaces 12 and 14.
  • the invention should not be limited to this particular angular relationship. 1
  • the surface 13 (the hypotenuse) is highly polished, an object projected through the surface 12, which may be termed the object surface, and indicated by the rays 16, will be reflected by the surface 13 toward the face 14, which may be tenned the image surface. Thus, an observer viewing the image surface 14 may see the object.
  • the rays 16 transmitted from the prism through surface 14 are refracted in accordance with Snell's law, but the angles of refraction are not shown in FIG. I nor the following figures for simplicity.
  • the invention has application to conventional rotary switches or instruments where it serves as an indicator and a mechanical drive, as well as various other man-machine interface uses.
  • the invention will be defined in terms of an indicator," without regard to mechanical application.
  • the information may be on a colored film or other substrate 32 as shown in FIG. 4.
  • the film 32' may have dark portions representing the indicia 36 with translucent colored or transparent portions 37, 37a, 37b, 37c surrounding the indicia.
  • the film 32' may be wrapped around the surface 24 and fixed thereto by a suitable adhesive.
  • the objects or indicia may be illuminated both by ambient light passing radially through the surface 24 and by ambient light entering the image face 26.
  • the indicia, as well as the colors, if a film such as 32 is employed, are reflected to the viewer by surface 25 which may have a mirrorized layer 40 thereon.
  • Layer or coating 40 may be a vacuum deposition of aluminum followed by a protective coating of paint. This minimizes spherical aberrations by assuring that the reflective surface is on rather than merely close to the prism.
  • the reflective surface or mirrorized layer 40 improves the field of view over that which would obtain if the reflecting surface 25 were highly polished giving internal reflection.
  • the indicia on legend 32 or 32' may be seen both from the front of the indicator by reflection and directly from the side of the indicator.
  • a rotary indicator 45 is similar to that shown in FIG. 2, except that a translucent or transparent legend 46 extends the full width of object surface 47 and a transparent annular cover 48 surrounds the object surface. If there is not a requirement to edge read the object, then the annular cover 48 may be opaque, but it should have a reflective inside surface to reflect light rays, which entered the prism through the image face 26, back to the viewer.
  • the cover 48 is supported on an annular shoulder 49 integral with body 50.
  • cover 48 is transparent, the indicia on the legend 46 is visible at the periphery of the indicator, as well as from the front, and the film is protected from damage. In some cases it might be desirable to construct the cover 48 of a resilient material for ease in use.
  • an instrument assembly 52 may include an instrument 53 supported on a mounting plate 54 and having a splined operator shaft 55 extending through the plate 54. Splined to shaft 55 is a cylindrical indicator 56 with a pointer 58 molded therein for indicating the position of the instrument.
  • An annular prism body 60 is stationary and is supported by an annular mounting flange 61 in cooperation with a cylindrical inward projection 62 of prism portion 63. Flange 61 and body 60 are fixed to mounting plate 54 by an integral nut and nipple fitting 66 which is threadedly received in the mounting plate 54 or another fastener (not shown) on the opposite side of the mounting plate 54.
  • Prism portion 63 consists of a cylindrical object face 67, a mirrorized layer 68 defining a reflecting surface on the hypotenuse of the prism, and a planar image surface 69.
  • a lengend-bearing translucent or transparent film 71 is provided similar to that shown in FIG. 4.
  • the indicia on the film 71 appears from the front, as shown in FIG. 8, as stationary indicia annularly arrayed about the indexible indicator 56.
  • Cover 72 is transparent permitting the indicia to be viewed from the side as well as the front.
  • a shield or windowring 74 may be provided as shown in FIGS. 9 and 10.
  • Prism body 76 is similar to prism 60, except that it is fixed to the mounting plate 77 by a radially extending portion 78 of cover 79 by a lock nut 81.
  • Carried on the inner portion of an indexible indicator 83 is a ring 74 which has an opening or window 85 in a cylindrical portion 86.
  • the portion 86 may be closely adjacent and surrounding legend film 87.
  • the ring 74 which is opaque except for window 85, restricts the passage of light so that the indicia adjacent window 85 will be more brightly illuminated than any of the other indicia on legend film 87.
  • the window may be formed of color tinted material and the remaining portion of shield 74 transparent so that the indicia at the window will stand out. The instrument position is thus clearly indicated without the use of an arrow or electrical illumination.
  • the present display device lends itself particularly well to ornamental design.
  • Various designs may be provided in the prism body itself to be observable by the viewer from the front.
  • designs can be put on the legend film itself.
  • V-shaped grooves 91 in the object face 92 will appear as tapered grooves to the viewer from the front of the indicator.
  • Grooves 93 may also be provided in the rear surface of central cylindrical boss 95 integral with body 96, and these appear from the front as shown in FIG. l2.
  • grooves 101 may be provided in reflecting surface 102. Notches 104 at the comer (FIG. 15) between object surface 105 and reflecting surface 106 around the annular edge will appear from the front, as shown in FIG. 16. Splines 110 on central cylindrical portion 111 in the embodiment shown in FIGS. 17 and 18 will produce a design which appears from the front, as shown in FIG. 18.
  • a similar indicator 115 has a radial portion 116 interconnecting prism portion 117 and central cylindrical portion 118.
  • the radial portion 116 has grooves 119 extending radially in the rear side thereof which appear as shown in FIG. 20.
  • the design may be reflected in a similar manner to the indicia by the provision of a second annular prism 122 in place of the central cylindrical portion, as shown in FIG. 21.
  • An object such as splines in opening 124 will be reflected from surface 126 toward image surface 128 and appear as shown in FIG. 22 from the front face of the knob.
  • Luminous paint may be employed to produce other ornamental efi'ects, as well as to protect the mirrorized layer 40 (FIG. 2), and might also be used for the legend itself.
  • the mirrorized layer 40 (or surface 93 in FIG. 11, or surface 119 in FIG. 19) may be masked such that a ring or rings are made in the center of the display to produce an ornamental effect.
  • the front face of an indicator 130 may be convex in configuration to produce both an amplification or increased field of view for the image reflected from surface 131 of prism 132, as well as enhancing the indicator from an aesthetic standpoint.
  • the rotary indicator embodiments thus far described are adapted to operate on ambient light without a separate source of power, in some instances it may be desirable to provide additional illumination and toward this end the embodiment shown in FIG. 24 includes incandescent light bulbs and the embodiment shown in FIG. 25 employs an electrolu minescent material for additional illumination.
  • transparent prism body member has a cylindrical opaque cover 141 fixed thereto with a radially inwardly extending portion 143 fixed to mounting plate 145 so that prism portion 147 in this embodiment is stationary.
  • a rotary indicator 150 is carried by shaft 151 and a suitable pointer may be provided on the indicator for designating position.
  • a translucent or transparent information-bearing film 153 is provided similar to that shown in FIG. 4.
  • cover 141 Mounted within cover 141 is an annular light supporting member 155 having openings 156 therein receiving small electrical lights 159. Lights 159 are energized through spring contacts 161 fixed to inwardly extending cover portion 143. Again, the translucent portions of film 153 permit illumination peripherally through object face 166. A ground contact is carried by indicator 150 and engages a conductor 170a surrounding light mounting plate 155.
  • the lights are replaced by an electroilluminescent flexible tape 168 on the inside of the cover.
  • Legends may appear on both the inner side 169 and the outer side 171 of tape 169 so that the information is visible both peripherally and from the front of the prism body.
  • Electrical leads 172a extend from the tape 168 to conductors 172 and 173 fixed in a radially inwardly extending portion 176 of cover 177.
  • the cover 177 may be transparent or translucent and the tape is adhered to the cylindrical inner surface thereof so that it is readily viewed through the cover as well as reflected by prism 178 to the front of the body.
  • FIGS. 26 and 27 show a rotary display 180 for a dual shafted instrument. Included in this assembly is a clear display 182 having oppositely disposed concentric annular prism portions 184 and 186 with object surfaces 188 and 190, respectively. Suitable legends 192 and 194 may be applied to the object surfaces 188 and 190, respectively, and appear as numerals from the front face of the display when reflected from their respective object surfaces as shown clearly in FIG. 27.
  • the display 182 is fixed to a body portion 196 which is in turn fixed to the face of an associated instrument.
  • the instrument may have two shafts 198 and 200 separately rotatable for independent adjustment, that project within the body portion 196 through a central fitting 202 at the back of the body portion.
  • the shaft 198 is hollow and rotatably receives the shaft 200.
  • a sleeve 204 constructed of clear material and having an annular knob portion 206 projecting from the front surface of display 182.
  • Attached to the sleeve 204 at the rear end thereof is an indicating pointer 208 having an axially extending pointer portion 210 adjacent the object surface 182.
  • An image of the pointer portion 210, as shown after reflection by the prism 184, is illustrated at 212 in FIG. 27.
  • a small knob 214 Fixed to the inner shaft 200 is a small knob 214 rotatable within and projecting from within the sleeve 204.
  • a pointer 216 is fixed to the surface of the knob 214 and is reflected through the clear sleeve 204 and reflected by the inner prism 186 so that it appears as shown at 218 in FIG. 27 from the front face of the display.
  • the pointer 216 is rotated along with the innner shaft 200 so that the image 218 of the pointer gives a visual representation from the front face of the display of the position of shaft 200.
  • the present invention may also take the form of a thumb wheel device 219.
  • a thumb wheel device 219. Included are spaced frame members 220 and 222 rotatably supporting a gear 224 which is connected to operate a switch or the like, not shown.
  • Mounted at the periphery of the members 220 and 222 is a cover plate 226 shown in FIG. 28 with an opening 228 therein exposing a portion of a thumb wheel 230.
  • the thumb wheel 230 is supported on a pin 232 in turn mounted in the plates 220 and 222.
  • the thumb wheel may be constructed of clear plastic and has gear teeth 234 and 236 for the purpose of operating it.
  • the gear teeth 234 also engage and rotate the gear 224.
  • the thumb wheel 230 includes an annular prism portion 238 having a mirrorized surface 240 formed as described above.
  • a side surface 242 of the thumb wheel provides the object surface to which a legend 244 is applied or preferably molded therein.
  • the legend may take the form of numbers so that they are reflected through the window 228 and the cover 226 as shown in FIG. 28, indicating the rotary position of the thumb wheel.
  • legends may be molded into the periphery surface 246 to appear as shown in FIG. 28 and at the same time be reflected and viewed through the image surface as shown in FIG. 3.
  • FIGS. 30 and 31 illustrate a further form of the invention.
  • a prism indicated at 250 may have a reflecting surface 252, an object surface 254, and an image face or surface 256.
  • a cover 257 may be mounted on a shaft 258 with the shaft in turn having a turning knob 260 mounted on its outer end, outside of the prism 250.
  • the cover 257 may have a pair of spaced circumferentially extending shields indicated at 262 and 264. The outer ends of these shields are closely adjacent a peripherally extending flange 266 of the prism 250. Between the shields 262 and 264 is an annular space which may be described as a track and which is indicated at 268. Between the inner annular shield 264 and the object surface 254 is a second annular space which may also be described as a track and is indicated at 270.
  • a suitable legend or other indicia may be mounted adjacent the object face 254 as described above.
  • a strip or tape of a colored material Within the outer track 268 is a strip or tape of a colored material, indicated at 272 in FIG. 31.
  • the tape 272 is fastened at one end, indicated at 274, to the object face of the prism.
  • the tape is positioned within the outer track 268, but because it is fastened to the prism, when the cover is rotated by knob 260, the tape 272 will be moved into the inner track 270, directly behind the legend or indicia on the object face.
  • the indicia or legend give an indication of the position of the particular instrument to which the indicator is attached, but the arcuate length of visible color at the image face will also give an indication of this position. Looking particularly at FIG. 31, and assuming rotation in a counterclockwise direction, movement of the cover will permit successively greater amounts of the tape 272 to be positioned within the inner track and thus visible from the image face.
  • the shield 264 is opaque, thus when the device is in the full off position, little or no color will be visible at the image face. However, as the knob 260 is rotated to successively turn the device away from the off position, successive amounts of color will become visible at the image face, inasmuch as the tape 272 will have moved into the track 270 between the opaque shield 264 and the object face 254. In effect, there will be a color indication of the position of the knob 260, as well as a visual indication from the position of the numbers at the image face.
  • FIGS. 32 and 33 show a further form of rotatable display device.
  • a rotatable display member 280 may include a generally cylindrical object surface 282 and a curved image surface 284. Both the object surface 282 and the image surface 284 extend peripherally about the rotatable display member 280.
  • the display member 280 may be suitably attached to a switch shaft 286 so that the display device not only provides useful information, but also operates a switch.
  • the shaft 286 may be connected by a nut or the like 288 to a panel member 290.
  • Inside of the display member 280 is a reflecting surface 292, again suitably mirrorized or treated to be highly reflective, and having a bracket portion 294 which is attached by the nut 288 to the panel member 290. Note particularly in FIG.
  • the image surface 284 is convex and there is a similar convex interior surface 302.
  • the combination of the two convex surfaces provide magnification of the light rays reflected by the reflecting surface 292.
  • the structure shown in FIGS. 32 and 33 includes an object surface and an image surface, both of which extend peripherally about the rotatable display member, with only the stationary reflecting surface having limited peripheral extent.
  • the angle between the reflecting surface, image and object surfaces may be readily varied, as will be apparent from the drawings. Not only does the reflecting surface limit what is displayed at the image surface, but the reflected light rays are substantially magnified by the double convex arrangement illustrated particularly in FIG. 33.
  • a switch shaft 304 may be suitably connected to a rotary display member indicated generally at 306.
  • the member 306 may have a conical reflecting surface 308 and a generally cylindrical object surface 310. Outside of the object surface 310 is an indicia tape indicated at 312 physically at tached to the object surface for rotation with it by a ring 313 which may be either transparent or opaque.
  • a ring 313 which may be either transparent or opaque.
  • FIG. 3 there is no image surface. The viewer merely looks at the reflecting surface itself. Not only does the member 306 display the information from the indicia tape 312, but it will also be used in operating the switch itself.
  • the principle disclosed in FIG. 34 may be easily adaptable to many of the other display devices illustrated herein.
  • the display member 306 may be formed from a single sheet of plastic by a suitable heat molding or vacuum molding process. The principal advantage of the construction shown in FIG. 34 is the simple and economic production of the display member.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Geometry (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Illuminated Signs And Luminous Advertising (AREA)
US825898A 1968-07-25 1969-05-19 Rotary prism display Expired - Lifetime US3636915A (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
US825898A US3636915A (en) 1968-07-25 1969-05-19 Rotary prism display
CA057347A CA937078A (en) 1968-07-25 1969-07-18 Rotary prism display
DE19691936682 DE1936682B2 (de) 1968-07-25 1969-07-18 Drehanzeigevorrrichtung
FR6925354A FR2016821A1 (de) 1968-07-25 1969-07-24
GB37439/69A GB1278055A (en) 1968-07-25 1969-07-25 Rotary display device
ZA702338A ZA702338B (en) 1969-05-19 1970-04-08 Rotary prism display
NL7007226A NL7007226A (de) 1969-05-19 1970-05-19

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US74771768A 1968-07-25 1968-07-25
US825898A US3636915A (en) 1968-07-25 1969-05-19 Rotary prism display

Publications (1)

Publication Number Publication Date
US3636915A true US3636915A (en) 1972-01-25

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ID=27114809

Family Applications (1)

Application Number Title Priority Date Filing Date
US825898A Expired - Lifetime US3636915A (en) 1968-07-25 1969-05-19 Rotary prism display

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US (1) US3636915A (de)
CA (1) CA937078A (de)
DE (1) DE1936682B2 (de)
FR (1) FR2016821A1 (de)
GB (1) GB1278055A (de)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3739512A (en) * 1971-11-19 1973-06-19 Oak Electro Netics Corp Reflective readout device
US3762715A (en) * 1971-08-09 1973-10-02 Casselle Novelty Co Inc Dice simulator
US3780248A (en) * 1971-03-20 1973-12-18 R Martin Electrical switches
US4070100A (en) * 1976-09-01 1978-01-24 Katsuyuki Akiyoshi Filter for partially transmitting light
US4688512A (en) * 1985-03-04 1987-08-25 Mechanical Products, Inc. Backlighted trip indicator
US5247491A (en) * 1991-07-29 1993-09-21 Zdzislaw Kwiatkowski Device for projecting a rainbow-like spectral display in the form of a symbol design, time indicating display and the like
US5295047A (en) * 1992-04-06 1994-03-15 Ford Motor Company Line-of-light illuminating device
US5669485A (en) * 1996-01-02 1997-09-23 Motorola, Inc. Rotary switch knob assembly with interspersed radial labeling
US6141147A (en) * 1996-08-07 2000-10-31 Black & Decker Inc. Optical unit for image projection and tool incorporating same
US6565223B2 (en) 2001-01-24 2003-05-20 Visteon Global Technologies, Inc. Integrated light transfer structure for providing halo and end illumination for a control switch assembly
US20060219156A1 (en) * 2005-03-30 2006-10-05 Douglas Denton Control
EP2093735A1 (de) * 2008-02-19 2009-08-26 Siemens Aktiengesellschaft Notrufschalter mit einem bistabilen Schaltelement
US20160079013A1 (en) * 2014-09-12 2016-03-17 Denso International America, Inc. Projected knob device
EP3359854A4 (de) * 2015-10-08 2019-08-28 Cyto365 Ab Medizinisches ventil

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2930769C2 (de) * 1979-07-28 1982-04-08 Daimler-Benz Ag, 7000 Stuttgart Anordnung von beleuchtbaren transparenten Symbolen

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GB190420008A (en) * 1904-09-16 1905-07-20 Edward John Dobbins Improvements in Advertising Devices.
US2220590A (en) * 1939-07-19 1940-11-05 Taylor Instrument Co Adjusting knob
US2285374A (en) * 1939-10-07 1942-06-02 Telefunken Gmbh Push button for radio apparatus
US2334479A (en) * 1940-10-31 1943-11-16 Rca Corp Telltale device
US2430616A (en) * 1945-08-06 1947-11-11 Rohm & Haas Instrument lens and dial
US2616941A (en) * 1949-07-13 1952-11-04 Lasko George Anton Indicating apparatus
US2699141A (en) * 1950-11-24 1955-01-11 Bendix Aviat Corp Illuminated knob
US2711711A (en) * 1953-06-10 1955-06-28 Philco Corp Tuning apparatus
US2713103A (en) * 1953-01-29 1955-07-12 Moffats Ltd Switch positioning means
US2732467A (en) * 1956-01-24 Switch control and indicator
US2750918A (en) * 1953-11-10 1956-06-19 Mcgraw Electric Co Control knob
US2943596A (en) * 1959-04-06 1960-07-05 Westinghouse Electric Corp Blanket control
US3041917A (en) * 1959-09-24 1962-07-03 William L Macshane Underwater instrument viewing device
US3073210A (en) * 1959-01-19 1963-01-15 Joseph W Packard Prismatic reflecting device

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US2732467A (en) * 1956-01-24 Switch control and indicator
GB190420008A (en) * 1904-09-16 1905-07-20 Edward John Dobbins Improvements in Advertising Devices.
US2220590A (en) * 1939-07-19 1940-11-05 Taylor Instrument Co Adjusting knob
US2285374A (en) * 1939-10-07 1942-06-02 Telefunken Gmbh Push button for radio apparatus
US2334479A (en) * 1940-10-31 1943-11-16 Rca Corp Telltale device
US2430616A (en) * 1945-08-06 1947-11-11 Rohm & Haas Instrument lens and dial
US2616941A (en) * 1949-07-13 1952-11-04 Lasko George Anton Indicating apparatus
US2699141A (en) * 1950-11-24 1955-01-11 Bendix Aviat Corp Illuminated knob
US2713103A (en) * 1953-01-29 1955-07-12 Moffats Ltd Switch positioning means
US2711711A (en) * 1953-06-10 1955-06-28 Philco Corp Tuning apparatus
US2750918A (en) * 1953-11-10 1956-06-19 Mcgraw Electric Co Control knob
US3073210A (en) * 1959-01-19 1963-01-15 Joseph W Packard Prismatic reflecting device
US2943596A (en) * 1959-04-06 1960-07-05 Westinghouse Electric Corp Blanket control
US3041917A (en) * 1959-09-24 1962-07-03 William L Macshane Underwater instrument viewing device

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Title
Interface Devices, Inc., A Division of Oak Electro/Netics Corp., Crystal Lake, Ill., The Prism Display using Ambient Light for Knobs, Pushbuttons, and Meters. *

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3780248A (en) * 1971-03-20 1973-12-18 R Martin Electrical switches
US3762715A (en) * 1971-08-09 1973-10-02 Casselle Novelty Co Inc Dice simulator
US3739512A (en) * 1971-11-19 1973-06-19 Oak Electro Netics Corp Reflective readout device
US4070100A (en) * 1976-09-01 1978-01-24 Katsuyuki Akiyoshi Filter for partially transmitting light
US4688512A (en) * 1985-03-04 1987-08-25 Mechanical Products, Inc. Backlighted trip indicator
US5247491A (en) * 1991-07-29 1993-09-21 Zdzislaw Kwiatkowski Device for projecting a rainbow-like spectral display in the form of a symbol design, time indicating display and the like
US5295047A (en) * 1992-04-06 1994-03-15 Ford Motor Company Line-of-light illuminating device
US5669485A (en) * 1996-01-02 1997-09-23 Motorola, Inc. Rotary switch knob assembly with interspersed radial labeling
US6141147A (en) * 1996-08-07 2000-10-31 Black & Decker Inc. Optical unit for image projection and tool incorporating same
US6565223B2 (en) 2001-01-24 2003-05-20 Visteon Global Technologies, Inc. Integrated light transfer structure for providing halo and end illumination for a control switch assembly
US20060219156A1 (en) * 2005-03-30 2006-10-05 Douglas Denton Control
US7255061B2 (en) * 2005-03-30 2007-08-14 Gm Global Technology Operations, Inc. Control knob with symbol display
EP2093735A1 (de) * 2008-02-19 2009-08-26 Siemens Aktiengesellschaft Notrufschalter mit einem bistabilen Schaltelement
US20160079013A1 (en) * 2014-09-12 2016-03-17 Denso International America, Inc. Projected knob device
US9728356B2 (en) * 2014-09-12 2017-08-08 Denso International America, Inc. Projected knob device
EP3359854A4 (de) * 2015-10-08 2019-08-28 Cyto365 Ab Medizinisches ventil

Also Published As

Publication number Publication date
FR2016821A1 (de) 1970-05-15
DE1936682A1 (de) 1970-05-06
GB1278055A (en) 1972-06-14
DE1936682B2 (de) 1972-06-29
CA937078A (en) 1973-11-20

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