US3353026A - Radiation sensitive programming device using flexible light conductors - Google Patents

Radiation sensitive programming device using flexible light conductors Download PDF

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US3353026A
US3353026A US439038A US43903865A US3353026A US 3353026 A US3353026 A US 3353026A US 439038 A US439038 A US 439038A US 43903865 A US43903865 A US 43903865A US 3353026 A US3353026 A US 3353026A
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plugboard
holes
series
board
recesses
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US439038A
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Israely Ilan
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Clary Corp
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Clary Corp
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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
    • G02B6/4439—Auxiliary devices
    • G02B6/444—Systems or boxes with surplus lengths
    • G02B6/4452—Distribution frames
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
    • G02B6/4439—Auxiliary devices
    • G02B6/444—Systems or boxes with surplus lengths
    • G02B6/4452—Distribution frames
    • G02B6/44526—Panels or rackmounts covering a whole width of the frame or rack
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
    • G02B6/4439—Auxiliary devices
    • G02B6/444—Systems or boxes with surplus lengths
    • G02B6/44528—Patch-cords; Connector arrangements in the system or in the box
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B19/00—Programme-control systems
    • G05B19/02—Programme-control systems electric
    • G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
    • G05B19/08—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using plugboards, cross-bar distributors, matrix switches, or the like

Definitions

  • This invention relates to programming devices and has particular reference to programming devices of the plugboard type wherein the plug connections may be readily changed or altered as desired.
  • Such programming devices are generally used in electronic computers, accounting machines and similar equipment.
  • the devices usually comprise a plugboard having a plurality of holes in which are inserted a number of wire patch cords whose locations determine the particular functions controlled during different steps of a programmed operation.
  • a number of plugboards with wire patch cords arranged thereon to control different operations according to predetermined programs, are provided.
  • the appropriate plugboard is inserted into a receiver, causing the projecting ends of the patch cords mounted thereon to engage a field of electric contacts or sockets in the receiver so as to establish appropriate circuits.
  • the plugboard must be very accurately constructed and aligned with the receiver in order to etfect proper engagement of the various patch cords with the associated contacts. Any bowing or Warping of the plugboard or the receiver would tend to mis-align at least certain of the contacts, thus resulting in faulty electrical connections.
  • diodes are required in most cases to isolate different circuits set up by the patch c-ords.
  • Another object is to provide a plugboard type programming device in which electrical connections are reduced to a minimum.
  • Another object is to provide a plugboard which may be repeatedly removed and replaced without contact wear.
  • Another object is to provide a plugboard of the above type in which the number of plugable connections for a given area may be increased considerably over that of prior art plugboard devices.
  • a further object is to reduce the amount of wiring required to connect a programming device to appropriate circuits.
  • a further object is to eliminate the need for circuit isolating devices, such as diodes, in a programming device of the above type.
  • FIG. 1 is a perspective view of a programming device embodying a preferred form of the present invention.
  • FIG. 2 is a sectional elevation view of the programming device.
  • FIG. 3 is a sectional plan view taken along the line 33 of FIG. 2.
  • FIG. 4 is a sectional plan view taken along the line 44 of FIG. 2.
  • FIG. 5 is an enlarged sectional view taken through a portion of the plugboard.
  • FIG. 6 is a schematic view illustrating a complete programming system.
  • the programming device comprises a receiver board 1 of plastic or similar electrically insulating material.
  • a channel member 2 is attached by screws 3 to the sides and bottom of the receiver board.
  • the channel member has its forward flange spaced sufliciently from the board 1 to slideably receive a plubo-ard 4 of opaque material such as plastic.
  • the plug board is substantially of the same width as the board 1 whereby it may be accurately located in face-to-face relation with the former by the channel member.
  • a plurality of recesses 5 are formed in the receiver board 1 in which are located elongated glow lamps 6. Each lamp is held in place by a pair of spring clips 7 which yieldably engage opposite ends of the lamp.
  • the clips form electric terminals to connect the lamps to conductors 8 connected in circuit, through amplifiers 10, to respective terminals of a suitable electronic stepping circuit 11, which may be of conventional construction.
  • a series of spaced openings 12 extend from each of the recesses 5 to the front surface 13 of the receiver board.
  • a plurality of photo-sensing devices 14 are located in recesses 15 formed in the front surface 13 of the receiver board, as seen in FIG. 4. Such devices are formed of sheet material, the front surface of which is preferably located below the front surface of the board 1. These devices may be of either the photo-conductive type such as cadmium sulphide, cadmium selenide or lead sulphide, or they may be of the photo-voltaic type such as silicon, gallium arsenide, indium antimonide or indium arsenide.
  • the photo-sensitive devices 14 are connected through amplifying circuits 16 (FIG. 6) to suitable function control circuits.
  • amplifying circuits 16 For example, a portion of such circuitry is shown as including an add control circuit 17, a subtract control circuit 18, a sub-total control circuit 20 and a total control circuit 21.
  • the pluboard When the pluboard is inserted in the channel member it will be maintained directly adjacent the receiver board to prevent light from different ones of the lamps 6 from impinging on the photo-sensing devices 14, except through light conductors to be described presently. Also, when the plugboard is in place, one series of holes 22 extending therethrough are aligned with the openings 12 and another series of holes are aligned with the photo-sensing devices 14.
  • the holes in the plugboard associated with the photo-sensing devices are arranged in sub-groups, i.e. 24, 25, etc., each comprising five vertical columns of holes and five horizontal rows of holes,
  • each of the holes 22 in the plugboard is tapered slightlyas shown at 27 to receive a suitably shaped end formation 28 of a flexible light conductor 30;
  • the latter may be formed of fibre optic material or flexible transparent plastic material having both ends shaped similar to that shown at 28.
  • each of the conductors 30 is inserted into an appropriate hole 22 associated with one of the lamps 6 and the other end is inserted. in a hole associated with one of the photo-sensing devices, depending upon the function control. circuit to be energized when the associated lamp is illuminated.
  • the tapered ends of the conductors and mating hole formations in the plugboard prevent inadvertent withdrawal of the conductors due to vibration, jarring, etc.
  • the stepping circuit 11 Upon initiation of operation of the computer, accounting machine or other equipment to which the programming device is electrically connected, the stepping circuit 11 is stepped into an initial position causing an initial one of the lamps 6 to be illuminated. Accordingly, the latter will transmit light rays through one or more of the conductors 30 aligned therewith, thereby transmitting a light beam to one or more of the photo-sensing devices depending on where the opposite ends of such conductors are located.
  • a signal will be transmitted to an input terminal 31 of the stepping device 11 to advance the same so as to illuminate the next succeeding lamp 6 and to de-energize the currently energized lamp. This will cause energization of one or more different control circuits depending upon the arrangement of the light conductors. This procedure will be repeated until all steps in the program have been transversed, i.e., until all of the lamps have been successively illuminated.
  • Suitable light shielding means are preferably provided to prevent stray or ambient light from energizing the different light sensing devices.
  • Different programs can be readily set up by removing a currently inserted plugboard and substituting others having their light conductors 30 prearranged to control the program device according to desired programs.
  • a program board can be readily modified by merely withdrawing one or more of the conductors 30 at either end and replacing it as desired.
  • the conductors need be only on the order of in diameter and do not require a large contact head at their opposite ends, Accordingly, a large number of such conductors may be located in a relatively small area, thereby reducing the overall size of the programming device.
  • light is intended to encompass various forms of radiant energy, for example, ultra-violet and infra-red rays.
  • a program device comprising a receiver board having a contacting surface
  • a program device comprising a receiver board having at least one plane surface,
  • a program device comprising a receiver board having at least one plane surface,
  • a programming device comprising a receiver board havng a front and rear surface,
  • said board having a plurality of openings communicating said front surface with said lamps, said board having a plurality of recesses therein accessible from the front surface thereof, photo-sensing devices in said recesses, a plugboard, means for removably locating said plugboard adjacent said front surface of said receiver board, said plugboard having a first and second series of holes therethrough, said first series of holes communicating with said openings and said second series of holes communicating with said recesses, and
  • a programming device comprising a receiver board seftable at its pp end y of Said Second ries of holes. 6. A programming device according to claim 5 wherein said holes and the ends of said conductor are correspondingly tapered.
  • said board having a plurality of recesses therein accessible from said rear surface and a plurality of openings communicating said front surface with each of 10 said recesses, light sources in respective ones of said recesses,
  • said first series of holes communicating with said open- WALTER STOLWEIN, Primary Examiner.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Mathematical Physics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Connector Housings Or Holding Contact Members (AREA)

Description

Nov. 14, 1967 SRAELY 3,353,026
RADIATION SEN IVE PROGRAMMING DEVICE USING FLEXIBLE LIGHT CONDUCTORS Filed March 11, 1965 2 Sheets-Sheet 2 L I I A! I I I ELL- V7425 f 4n fld INVENTOR. M g MAW- away United States Patent 3,353,026 RADIATION SENSITIVE PROGRAMMING DEVICE USING FLEXIBLE LIGHT CONDUCTORS Ilan Israely, Los Angeles, Calif., assignor to Clary Corporation, San Gabriel, Califi, a corporation of California Filed Mar. 11, 1965, Ser. No. 439,038 6 Claims. (Cl. 250-227) ABSTRACT OF THE DISCLOSURE sensing device.
This invention relates to programming devices and has particular reference to programming devices of the plugboard type wherein the plug connections may be readily changed or altered as desired.
Such programming devices are generally used in electronic computers, accounting machines and similar equipment. The devices usually comprise a plugboard having a plurality of holes in which are inserted a number of wire patch cords whose locations determine the particular functions controlled during different steps of a programmed operation.
In those cases where the program of operations may be changed from time to time, a number of plugboards, with wire patch cords arranged thereon to control different operations according to predetermined programs, are provided. When a different program is to be followed, the appropriate plugboard is inserted into a receiver, causing the projecting ends of the patch cords mounted thereon to engage a field of electric contacts or sockets in the receiver so as to establish appropriate circuits.
Although such prior art wire type plugboards are generally satisfactory, they require a certain amount of contact pressure in order to maintain adequate electrical contact between the ends of the patch cords and the mating contacts. Although the contact pressure between each electrical contact and the end of the associated patch cord is relatively light, there may be from 100 to 2000 contacts altogether, thus requiring considerable overall force in order to insert the plugboard in the receiver. This generally requires special clamping devices to insert the plugboard and also requires a rugged and heavy plugboard construction to prevent bowing or warping of the latter during insertion into the receiver.
Also, because of the large number of contacts involved, the plugboard must be very accurately constructed and aligned with the receiver in order to etfect proper engagement of the various patch cords with the associated contacts. Any bowing or Warping of the plugboard or the receiver would tend to mis-align at least certain of the contacts, thus resulting in faulty electrical connections.
Further, since a large number of electric contacts are involved, corrosion or dirtoften becomes a problem in establishing proper electrical connections throughout the entire field of contacts. Although this may be minimized by coating the contacts with precious metals, such as gold or silver, such coatings are relatively expensive and tend to wear off after repeated insertions of the plugboard.
Further, due to the direct electrical connections established by wire type patch cords, diodes are required in most cases to isolate different circuits set up by the patch c-ords.
It therefore becomes a principal object of the present invention to overcome the aforementioned problems of prior art plugboard type programming devices.
Another object is to provide a plugboard type programming device in which electrical connections are reduced to a minimum.
Another object is to provide a plugboard which may be repeatedly removed and replaced without contact wear.
Another object is to provide a plugboard of the above type in which the number of plugable connections for a given area may be increased considerably over that of prior art plugboard devices.
A further object is to reduce the amount of wiring required to connect a programming device to appropriate circuits.
A further object is to eliminate the need for circuit isolating devices, such as diodes, in a programming device of the above type.
The manner in which the above and other objects of the invention are accomplished will be readily understood on reference to the following specification when read in conjunction with the accompanying drawing, wherein:
FIG. 1 is a perspective view of a programming device embodying a preferred form of the present invention.
FIG. 2 is a sectional elevation view of the programming device.
FIG. 3 is a sectional plan view taken along the line 33 of FIG. 2.
FIG. 4 is a sectional plan view taken along the line 44 of FIG. 2.
FIG. 5 is an enlarged sectional view taken through a portion of the plugboard.
FIG. 6 is a schematic view illustrating a complete programming system.
Referring in detail to the drawings the programming device comprises a receiver board 1 of plastic or similar electrically insulating material. A channel member 2 is attached by screws 3 to the sides and bottom of the receiver board. The channel member has its forward flange spaced sufliciently from the board 1 to slideably receive a plubo-ard 4 of opaque material such as plastic. The plug board is substantially of the same width as the board 1 whereby it may be accurately located in face-to-face relation with the former by the channel member.
A plurality of recesses 5 are formed in the receiver board 1 in which are located elongated glow lamps 6. Each lamp is held in place by a pair of spring clips 7 which yieldably engage opposite ends of the lamp. The clips form electric terminals to connect the lamps to conductors 8 connected in circuit, through amplifiers 10, to respective terminals of a suitable electronic stepping circuit 11, which may be of conventional construction.
A series of spaced openings 12 extend from each of the recesses 5 to the front surface 13 of the receiver board.
A plurality of photo-sensing devices 14 are located in recesses 15 formed in the front surface 13 of the receiver board, as seen in FIG. 4. Such devices are formed of sheet material, the front surface of which is preferably located below the front surface of the board 1. These devices may be of either the photo-conductive type such as cadmium sulphide, cadmium selenide or lead sulphide, or they may be of the photo-voltaic type such as silicon, gallium arsenide, indium antimonide or indium arsenide.
The photo-sensitive devices 14 are connected through amplifying circuits 16 (FIG. 6) to suitable function control circuits. For example, a portion of such circuitry is shown as including an add control circuit 17, a subtract control circuit 18, a sub-total control circuit 20 and a total control circuit 21.
When the pluboard is inserted in the channel member it will be maintained directly adjacent the receiver board to prevent light from different ones of the lamps 6 from impinging on the photo-sensing devices 14, except through light conductors to be described presently. Also, when the plugboard is in place, one series of holes 22 extending therethrough are aligned with the openings 12 and another series of holes are aligned with the photo-sensing devices 14.
As seen in FIGS. 1 and 3, the holes in the plugboard associated with the photo-sensing devices are arranged in sub-groups, i.e. 24, 25, etc., each comprising five vertical columns of holes and five horizontal rows of holes, The
remainder of the holes are arranged in groups of five vertical columns of holes, each hole aligned with an opening 12 of a respective one of the glow lamps 6.
Referring to FIG. 5, each of the holes 22 in the plugboard is tapered slightlyas shown at 27 to receive a suitably shaped end formation 28 of a flexible light conductor 30; The latter may be formed of fibre optic material or flexible transparent plastic material having both ends shaped similar to that shown at 28.
One end of each of the conductors 30 is inserted into an appropriate hole 22 associated with one of the lamps 6 and the other end is inserted. in a hole associated with one of the photo-sensing devices, depending upon the function control. circuit to be energized when the associated lamp is illuminated. The tapered ends of the conductors and mating hole formations in the plugboard prevent inadvertent withdrawal of the conductors due to vibration, jarring, etc.
Upon initiation of operation of the computer, accounting machine or other equipment to which the programming device is electrically connected, the stepping circuit 11 is stepped into an initial position causing an initial one of the lamps 6 to be illuminated. Accordingly, the latter will transmit light rays through one or more of the conductors 30 aligned therewith, thereby transmitting a light beam to one or more of the photo-sensing devices depending on where the opposite ends of such conductors are located.
On completion of a computing operation, a signal will be transmitted to an input terminal 31 of the stepping device 11 to advance the same so as to illuminate the next succeeding lamp 6 and to de-energize the currently energized lamp. This will cause energization of one or more different control circuits depending upon the arrangement of the light conductors. This procedure will be repeated until all steps in the program have been transversed, i.e., until all of the lamps have been successively illuminated.
Suitable light shielding means (not shown) are preferably provided to prevent stray or ambient light from energizing the different light sensing devices.
Different programs can be readily set up by removing a currently inserted plugboard and substituting others having their light conductors 30 prearranged to control the program device according to desired programs. Likewise, a program board can be readily modified by merely withdrawing one or more of the conductors 30 at either end and replacing it as desired.
It will be noted that the conductors need be only on the order of in diameter and do not require a large contact head at their opposite ends, Accordingly, a large number of such conductors may be located in a relatively small area, thereby reducing the overall size of the programming device.
The term light is intended to encompass various forms of radiant energy, for example, ultra-violet and infra-red rays.
Although the invention has been described in detail and certain terms and languages have been used, it is to be understood that the present disclosure is illustrative rather than restrictive and that changes and modifications may be made without departing from the spirit or scope of the invention as set forth in the claims appended hereto.
Having thus described the invention what is desired to be secured by United States Letters Patent is:
1. A program device comprising a receiver board having a contacting surface,
a plurality of photo-sensing devices carried by said board, a plurality of light sources carried by said board, a plugboard having a contacting surface, means for removably locating said plugboard with said contacting surface thereof in contact with said contacting surface of said receiver board, said plugboard having a first series of holes therethrough registerable with certain of said light sources and a second series of holes registerable with certain of said photo-sensing. devices, and at least one flexible light conductor, said light conductor being insertable at one end thereof in any one of said first series of holes and being insertable at its opposite end in any of said second series of holes. 2. A program device comprising a receiver board having at least one plane surface,
a plurality of photo-sensing devices carried by said boa-rd, a plurality of light sources carried by said board, a plugboard having at least one plane surface, means for removably locating said plugboard with said plane surface thereof in contact with said plane surface of said receiver board, said plugboard having a series of holes therethrough. registerable with certain of said light sources and a second series of holes registerable with certain of said. photo-sensing devices, and at least one flexible light conductor, said light conductor being insertable at one end thereof in any one of said first series of holes and being insertable at its opposite end in any of said second series of holes. 3. A program device comprising a receiver board having at least one plane surface,
a plurality of photo-sensing devices carried by said board, a plurality of light sources. carried by said board, a plugboard having at least one plane surface, means for removably locating said plugboard with said plane surface thereof in contact with said Plane surface of said receiver board, said plugboard having a first and second seriesof holes therethrough, said light sources each spanning a plurality of said first series of holes, said photo-sensing devices each spanning a plurality of said second series of holes, and at least one flexible light conductor, said lightconductor being insertable at one end thereof in any one of said first series of holes and being insertable at its opposite end in any of said second series of holes. 4. A programming device comprising a receiver board havng a front and rear surface,
a plurality of light sources supported by said board adjacent said rear surface, said board having a plurality of openings communicating said front surface with said lamps, said board having a plurality of recesses therein accessible from the front surface thereof, photo-sensing devices in said recesses, a plugboard, means for removably locating said plugboard adjacent said front surface of said receiver board, said plugboard having a first and second series of holes therethrough, said first series of holes communicating with said openings and said second series of holes communicating with said recesses, and
5 6 at least one flexible light conductor, ings and said second series of holes communicating said light conductor being insertable at one end thereof with said second plurality of recesses, and
in any one of said first series of holes and being inat least one flexible light conductor, sertable at its opposite end in any of said second se said light conductor being insertable at one end thereof ries of holes. 5 in any one of said first series of holes and being in- 5. A programming device comprising a receiver board seftable at its pp end y of Said Second ries of holes. 6. A programming device according to claim 5 wherein said holes and the ends of said conductor are correspondingly tapered.
having a front and rear surface,
said board having a plurality of recesses therein accessible from said rear surface and a plurality of openings communicating said front surface with each of 10 said recesses, light sources in respective ones of said recesses,
References Cited UNITED STATES PATENTS said board having a second plurality of recesses therein 2,614,226 10/ 1952 Davis 250227 X accessible from the front surface thereof, 15 2,982,175 5/1961 Eisler 250227 X photo-sensing devices in said last mentioned recesses, 3,213,179 10/1965 (315115011 X a plugboard 3,303,374 2/ 1967 Fy'ler 250227 X means for removably locating said plugboard in com OTHER REFERENCES tact with Said from surface of said receiver board Brandenberg: IBM Technical Disclosure Bull. vol. 5 said plugboard having a first and second series of holes 20 June 1962,
therethrough,
said first series of holes communicating with said open- WALTER STOLWEIN, Primary Examiner.

Claims (1)

  1. 5. A PROGRAMMING DEVICE COMPRISING A RECEIVER BOARD HAVING A FRONT AND REAR SURFACE, SAID BOARD HAVING A PLURALITY OF RECESSES THEREIN ACCESSIBLE FROM SAID REAR SURFACE AND A PLURALITY OF OPENINGS COMMUNICATING SAID FRONT SURFACE WITH EACH OF SAID RECESSES, LIGHT SOURCES IN RESPECTIVE ONES OF SAID RECESSES, SAID BOARD HAVING A SECOND PLURALITY OF RECESSES THEREIN ACCESSIBLE FROM THE FRONT SURFACE THEREOF, PHOTO-SENSING DEVICES IN SAID LAST MENTIONED RECESSES, A PLUGBOARD, MEANS FOR REMOVABLY LOCATING SAID PLUGBOARD IN CONTACT WITH SAID FRONT SURFACE OF SAID RECEIVER BOARD, SAID PLUGBOARD HAVING A FIRST AND SECOND SERIES OF HOLES THERETHROUGH, SAID FIRST SERIES OF HOLES COMMUNICATING WITH SAID OPENINGS AND SAID SECOND SERIES OF HOLES COMMUNICATING WITH SAID SECOND PLURALITY OF RECESSES, AND AT LEAST ONE FLEXIBLE LIGHT CONDUCTOR, SAID LIGHT CONDUCTOR BEING INSERTABLE AT ONE END THEREOF IN ANY ONE OF SAID FIRST SERIES OF HOLES AND BEING INSERTABLE AT ITS OPPOSITE END IN ANY OF SAID SECOND SERIES OF HOLES.
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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3562540A (en) * 1969-04-10 1971-02-09 Mallory & Co Inc P R Appliance with solid-state light-actuated control means
US3611359A (en) * 1967-12-07 1971-10-05 Maria Panerai Compact component device for the visible display of letters, digits, symbols and figures
US3638013A (en) * 1969-04-02 1972-01-25 Fiber Photics Inc Dental apparatus utilizing fiber optics
US3777154A (en) * 1972-02-07 1973-12-04 R Lindsey Optical data processing system
US3790791A (en) * 1972-07-20 1974-02-05 Bunker Ramo Optoelectronic cable assembly
US3918392A (en) * 1974-02-22 1975-11-11 Gen Instrument Corp Programmable fiber optic display for use in television tuners
US4005412A (en) * 1974-03-08 1977-01-25 Aktiebolaget Ljungmans Verkstader Apparatus for transferring information between electronic display devices and means for transmitting and receiving information and for supplying operating current to the electronic display devices
US4053764A (en) * 1975-10-02 1977-10-11 The United States Of America As Represented By The Secretary Of The Air Force Higher-order mode fiber optics t-coupler

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2614226A (en) * 1950-11-09 1952-10-14 Flavius E Davis Photoelectric device
US2982175A (en) * 1957-12-30 1961-05-02 Pan American Petroleum Corp Trace-shifting photographic recorder
US3213179A (en) * 1963-04-17 1965-10-19 Ralph A Clauson Organ combination action
US3303374A (en) * 1961-01-17 1967-02-07 Litton Prec Products Inc Cathode ray tube including face plate comprising tapered fiber optical elements mounted in an opaque mosaic

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2614226A (en) * 1950-11-09 1952-10-14 Flavius E Davis Photoelectric device
US2982175A (en) * 1957-12-30 1961-05-02 Pan American Petroleum Corp Trace-shifting photographic recorder
US3303374A (en) * 1961-01-17 1967-02-07 Litton Prec Products Inc Cathode ray tube including face plate comprising tapered fiber optical elements mounted in an opaque mosaic
US3213179A (en) * 1963-04-17 1965-10-19 Ralph A Clauson Organ combination action

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3611359A (en) * 1967-12-07 1971-10-05 Maria Panerai Compact component device for the visible display of letters, digits, symbols and figures
US3638013A (en) * 1969-04-02 1972-01-25 Fiber Photics Inc Dental apparatus utilizing fiber optics
US3562540A (en) * 1969-04-10 1971-02-09 Mallory & Co Inc P R Appliance with solid-state light-actuated control means
US3777154A (en) * 1972-02-07 1973-12-04 R Lindsey Optical data processing system
US3790791A (en) * 1972-07-20 1974-02-05 Bunker Ramo Optoelectronic cable assembly
US3918392A (en) * 1974-02-22 1975-11-11 Gen Instrument Corp Programmable fiber optic display for use in television tuners
US4005412A (en) * 1974-03-08 1977-01-25 Aktiebolaget Ljungmans Verkstader Apparatus for transferring information between electronic display devices and means for transmitting and receiving information and for supplying operating current to the electronic display devices
US4053764A (en) * 1975-10-02 1977-10-11 The United States Of America As Represented By The Secretary Of The Air Force Higher-order mode fiber optics t-coupler

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