US2437555A - Push-button switch - Google Patents

Push-button switch Download PDF

Info

Publication number
US2437555A
US2437555A US559498A US55949844A US2437555A US 2437555 A US2437555 A US 2437555A US 559498 A US559498 A US 559498A US 55949844 A US55949844 A US 55949844A US 2437555 A US2437555 A US 2437555A
Authority
US
United States
Prior art keywords
buttons
light
button
push
prism
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
US559498A
Inventor
Gregory L Rees
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.)
HOTPOINT Inc
Original Assignee
HOTPOINT 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
Application filed by HOTPOINT Inc filed Critical HOTPOINT Inc
Priority to US559498A priority Critical patent/US2437555A/en
Application granted granted Critical
Publication of US2437555A publication Critical patent/US2437555A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • 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"
    • H01H9/161—Indicators for switching condition, e.g. "on" or "off" comprising light emitting elements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/02—Details
    • H01H13/023—Light-emitting indicators
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/70—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard
    • 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
    • Y10S116/00—Signals and indicators
    • Y10S116/28—Push button structure
    • 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

Definitions

  • the present invention relates to push button switches having a plurality of push buttons for selectively closing any one of a plurality of electric circuits such as are used, for example, in connection with kitchen ranges in which heating units often include two heating coils to be connected singly, or in series or parallel to, 110 or 220 volts in order to produce difierent heat outputs. More specifically, my invention relates to switches with push buttons made of transparent or translucent material and including a light source for illuminating each push button in its on position. Limited space may make it necessary to provide a light source in the form of a miniature lamp requiring a special arrangement to obtain substantially uniform illumination of all push buttons and maximum light transmission through the buttons.
  • the object of my invention is to provide an improved construction and arrangement of push button switches of the type above specified whereby clear, visual indication of the various push buttons in their actuated position is assured.
  • FIG. 1 illustrates a push button switch embodying my invention
  • Fig. 2 is a section along lines 2-2 of Fig. 1
  • Fig. 3 is a perspective view from the rear of the switch
  • Fig. 4 is a perspective detail view of a part of the switch
  • Fig. 5 is a section through the light-reflecting portion of a button
  • Fig. 6 is a plane view of the light-reflecting surfaces of a button, Fig. 5 being a section along line 5-5 of Fig. 6.
  • the push button switch comprises a base 10 made of plastic or like insulating material and carrying a number of push buttons Ii to IS inclusive.
  • the switch in the present example is mounted on a panel H, which may form part of the back-splash of a kitchen range, by means including screws l8.
  • Push button I6 is an off button, disconnecting or opening any circuit that may have been,
  • buttons II to i5 Each of the other buttons II to serves to close one of several circuits and to open a circuit previously made 'by another button.
  • the push button i2 is forced in, a circuit is closed, and if subsequently the button II is forced in, the circuit previously made by the button I2 is opened and a new circuit is established by action of the button ii.
  • suitable interlocking means such as slides.
  • Each push button comprises a plunger l9 having a pair of legs 20, 2
  • the prism 22 has a top or end surface 2'6 for manual engagement to push the button into the base to close a circuit.
  • the prism or button proper is in the form of a right angle totally reflecting prism made of transparent material, preferably of the plastic type such as polymethyl methacrylate although other materials such as glass or quartz might be used.
  • a source 21 in the form of a miniature lamp with an output of about '7 Watts supported in a reflector 28 having a flange 29 which in the present instance is attached to the wall H by means of screws 30.
  • Each prism has a front wall or surface 3
  • the light-reflecting surface 32 has a plurality of parallel grooves 33, Fig. 5, forming prismatic projections 34 (Fig. 5) between them.
  • the projections 34 and the grooves 33 are essentially V-shaped with opposite sides forming angles of about degrees. Each groove extends at an angle of about 45 degrees towards the outer surface 3
  • a second set of parallel grooves 35 arranged perpendicular to the first set of grooves.
  • This light-reflection is further improved by the provision of a suitable coating or coatings on the light-reflecting surface of the prism.
  • a suitable coating or coatings on the light-reflecting surface of the prism.
  • I provide the 3 light-reflecting surface with two coatings, a first coating of transparent or colored lacquer and a second coating 01' silver.
  • buttons In many instances it is desirable to provide different colors for different buttons as a further visual indication of the circuit which is closed and in case of a kitchen range of the heat that is being produced.
  • the clear button which is the off button has a prism with grooved or knurled reflecting surface covered by a transparent lacquer and a silver coating.
  • the silver coating is preferably produced by the application of a silver lacquer forced against the coated reflecting surface with high air pressure so that the silver particles penetrate the translucent, colored coating, thus adding numerous sharp points of reflectance to the reflecting surface.
  • All the other buttons are provided with a first coating of lacquer having the desired color, blue, green, etc., and on top thereof a silver coating.
  • buttons from red to clear are arranged at different distances from the light source 21.
  • the different buttons I provide the darker colored buttons, purple and green, nearest the light 21, and the buttons which have a lighter color, such as clear or yellow, or a color more readily visible, such as red, further away.
  • buttons which are in the out or off position are not exposed to the light of the source 21, such light being screened oil? by a member 31 attached to the back of the wall 11.
  • the screen 3'! may also constitute a support and guide for the push buttons, keeping them aligned and thus assuring smooth operation of the switch.
  • a push button indicating device for use with electric switches comprising, in combination, a supporting element, a row of push buttons car- 4 ried by said element, each button comprising a member of light transmitting material and being provided with a surface disposed at an angle to the face of the button to form a prism, a light source adjacent said buttons for directing light toward the prisms when the buttons are pushed so that it is reflected toward the faces of the buttons, each of said buttons having difierent colors graduating from dark to light, the buttons having colors less readily visible being closer to the light source than those more readily visible so that the light transmitted by the prisms to the ends of the buttons is of substantially uniform intensity.
  • a push button indicating device for use with electric switches comprising, in combination, a supporting base, a row of push buttons carried by said element, each button comprising a solid member of light transmitting material and being provided with a surface disposed at an angle to the face of the button to form a prism, the prismatic surface thus formed being provided with intersecting sets of substantially parallel grooves forming light reflecting surfaces and a light source adjacent said buttons for directing light toward the prisms when the buttons are pushed so that it is reflected from the surfaces toward the faces of the buttons, each of said buttons having different colors to provide different visual effects when operating the different push buttons.

Description

March 9, 1948. s. L. REES 2,437,555
PUSH BUTTON SWITCH Filed Oct. 20. 1944 //A%Ax"1 Inventor: Gregory L,. Rees,
J6 'jmudq fii A ttorney Patented Mar. 9, 1948 PUSH-BUTTON SWITCH Gregory L. Rees, liinsdale, Ill., assignor to Hotpoint Inc., a corporation of New York Application October 20, 1944, Serial No. 559,498
2 Claims.
The present invention relates to push button switches having a plurality of push buttons for selectively closing any one of a plurality of electric circuits such as are used, for example, in connection with kitchen ranges in which heating units often include two heating coils to be connected singly, or in series or parallel to, 110 or 220 volts in order to produce difierent heat outputs. More specifically, my invention relates to switches with push buttons made of transparent or translucent material and including a light source for illuminating each push button in its on position. Limited space may make it necessary to provide a light source in the form of a miniature lamp requiring a special arrangement to obtain substantially uniform illumination of all push buttons and maximum light transmission through the buttons.
The object of my invention is to provide an improved construction and arrangement of push button switches of the type above specified whereby clear, visual indication of the various push buttons in their actuated position is assured.
For a consideration of what I believe to be novel and my invention, attention is directed to the following description and the claims appended thereto in connection with the accompanying drawing.
In the drawing Fig. 1 illustrates a push button switch embodying my invention; Fig. 2 is a section along lines 2-2 of Fig. 1; Fig. 3 is a perspective view from the rear of the switch; Fig. 4 is a perspective detail view of a part of the switch; Fig. 5 is a section through the light-reflecting portion of a button; and Fig. 6 is a plane view of the light-reflecting surfaces of a button, Fig. 5 being a section along line 5-5 of Fig. 6.
The push button switch comprises a base 10 made of plastic or like insulating material and carrying a number of push buttons Ii to IS inclusive. The switch in the present example is mounted on a panel H, which may form part of the back-splash of a kitchen range, by means including screws l8.
Push button I6 is an off button, disconnecting or opening any circuit that may have been,
formed by any of the other buttons II to i5. Each of the other buttons II to serves to close one of several circuits and to open a circuit previously made 'by another button. Thus, if the push button i2 is forced in, a circuit is closed, and if subsequently the button II is forced in, the circuit previously made by the button I2 is opened and a new circuit is established by action of the button ii. To this end the various push buttons are interlocked by suitable interlocking means such as slides. An arrangement of this kind is more fully disclosed in the application of J. L. Andrews, Ser. No. 569,296, filed on the same date and assigned to the same assignee as the present application, now Patent No. 2,431,- 904, issued Dec. 2, 1947, to which reference is made for details of the circuit arrangement not shown here because they do not form a particular part of my invention.
Each push button comprises a plunger l9 having a pair of legs 20, 2| for actuating slides, not shown, and a light-reflecting prism 22 secured to and supported on the legs by means including a U-shaped connecting member 23 which at one end is suitably fastened to the legs 20, 2| and at the other end forms lugs 24 with openings for receiving projections 25 formed on opposite sides of the prism 22. The prism 22 has a top or end surface 2'6 for manual engagement to push the button into the base to close a circuit. The prism or button proper is in the form of a right angle totally reflecting prism made of transparent material, preferably of the plastic type such as polymethyl methacrylate although other materials such as glass or quartz might be used. Light is directed towards the prisms by a source 21 in the form of a miniature lamp with an output of about '7 Watts supported in a reflector 28 having a flange 29 which in the present instance is attached to the wall H by means of screws 30. Each prism has a front wall or surface 3| exposed to the light from the lamp 21 and a reflecting surface or hypothenuse 32 at an acute angle to the front wall r 3| for reflecting light towards the top.
The light-reflecting surface 32 according to my invention has a plurality of parallel grooves 33, Fig. 5, forming prismatic projections 34 (Fig. 5) between them. The projections 34 and the grooves 33 are essentially V-shaped with opposite sides forming angles of about degrees. Each groove extends at an angle of about 45 degrees towards the outer surface 3| of the prism. In addition to the set of parallel grooves 33 I provide in a preferred embodiment, as shown, a second set of parallel grooves 35 arranged perpendicular to the first set of grooves. Thus the two sets of parallel grooves 33 and 35 form a plurality of prisms 36 between them, assuring maximum reflection and diffusion of light towards the top 26 of the button and producing a sparkling effect. This light-reflection is further improved by the provision of a suitable coating or coatings on the light-reflecting surface of the prism. In a preferred embodiment I provide the 3 light-reflecting surface with two coatings, a first coating of transparent or colored lacquer and a second coating 01' silver.
In many instances it is desirable to provide different colors for different buttons as a further visual indication of the circuit which is closed and in case of a kitchen range of the heat that is being produced. In the arrangement of Fig. 1 the different buttons have been designated with their respective colors red, yellow, purple, green, blue and clear. The clear button which is the off button has a prism with grooved or knurled reflecting surface covered by a transparent lacquer and a silver coating. The silver coating is preferably produced by the application of a silver lacquer forced against the coated reflecting surface with high air pressure so that the silver particles penetrate the translucent, colored coating, thus adding numerous sharp points of reflectance to the reflecting surface. All the other buttons are provided with a first coating of lacquer having the desired color, blue, green, etc., and on top thereof a silver coating.
The different buttons from red to clear are arranged at different distances from the light source 21. In order to obtain substantially the same visual effect with regard to the different buttons I provide the darker colored buttons, purple and green, nearest the light 21, and the buttons which have a lighter color, such as clear or yellow, or a color more readily visible, such as red, further away.
If during operation a button is pushed in, as shown in full line in Fig. 2, its reflecting surface 32 is exposed to the light of the source 21 and reflects such light outward through the end surface 26. All buttons which are in the out or off position, as shown by dash-dotted line in Fig. 2, are not exposed to the light of the source 21, such light being screened oil? by a member 31 attached to the back of the wall 11. The screen 3'! may also constitute a support and guide for the push buttons, keeping them aligned and thus assuring smooth operation of the switch.
What I claim as new and desire to secure by Letters Patent of the United States, is:
1. A push button indicating device for use with electric switches comprising, in combination, a supporting element, a row of push buttons car- 4 ried by said element, each button comprising a member of light transmitting material and being provided with a surface disposed at an angle to the face of the button to form a prism, a light source adjacent said buttons for directing light toward the prisms when the buttons are pushed so that it is reflected toward the faces of the buttons, each of said buttons having difierent colors graduating from dark to light, the buttons having colors less readily visible being closer to the light source than those more readily visible so that the light transmitted by the prisms to the ends of the buttons is of substantially uniform intensity.
A push button indicating device for use with electric switches comprising, in combination, a supporting base, a row of push buttons carried by said element, each button comprising a solid member of light transmitting material and being provided with a surface disposed at an angle to the face of the button to form a prism, the prismatic surface thus formed being provided with intersecting sets of substantially parallel grooves forming light reflecting surfaces and a light source adjacent said buttons for directing light toward the prisms when the buttons are pushed so that it is reflected from the surfaces toward the faces of the buttons, each of said buttons having different colors to provide different visual effects when operating the different push buttons.
GREGORY L. REES.
REFERENCES CITED The following references are of record in the file of this patent:
UNITED STATES PATENTS Number Name Date 214,835 Molera et a1 Apr. 29, 1879 458,850 Jacobs Sept. 1, 1891 755,197 Wadsworth Mar. 22, 1904 1,791,936 Rolph Feb. 10, 1931 1,823,319 Dickinson Sept. 15, 1931 1,967,745 Critchfield July 24, 1934 2,192,817 Sauger et a1. Mar. 5, 1940 2,265,124 Andres Dec. 9, 1941 2,285,374 Dohsmann et a1. June 2, 1942 2,310,790 Jungersen Feb. 9, 1943
US559498A 1944-10-20 1944-10-20 Push-button switch Expired - Lifetime US2437555A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US559498A US2437555A (en) 1944-10-20 1944-10-20 Push-button switch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US559498A US2437555A (en) 1944-10-20 1944-10-20 Push-button switch

Publications (1)

Publication Number Publication Date
US2437555A true US2437555A (en) 1948-03-09

Family

ID=24233817

Family Applications (1)

Application Number Title Priority Date Filing Date
US559498A Expired - Lifetime US2437555A (en) 1944-10-20 1944-10-20 Push-button switch

Country Status (1)

Country Link
US (1) US2437555A (en)

Cited By (36)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2550579A (en) * 1948-10-27 1951-04-24 Hotpoint Inc Heating circuit control for electric ranges
US2581053A (en) * 1949-01-06 1952-01-01 Robert J Thomas Push button having two positions in one of which it is illuminated
US2585401A (en) * 1947-10-23 1952-02-12 Wurlitzer Co Wall box for remote control systems
US2607875A (en) * 1950-05-23 1952-08-19 Tappan Stove Co Indicator for electric ranges
US2607874A (en) * 1950-04-03 1952-08-19 Tappan Stove Co Indicator for electric ranges
US2609476A (en) * 1949-08-19 1952-09-02 Hotpoint Inc Illuminated backsplasher for electric ranges
US2609475A (en) * 1949-07-27 1952-09-02 Hotpoint Inc Illuminated backsplasher for electric ranges
US2614162A (en) * 1951-02-07 1952-10-14 Edgar G Smith Currency denomination indicator
US2648305A (en) * 1950-02-25 1953-08-11 Westinghouse Electric Corp Illuminated indicating control
US2672551A (en) * 1949-06-09 1954-03-16 Douglas Aircraft Co Inc Self-lighted control operating member
US2686428A (en) * 1950-06-01 1954-08-17 Nathan Mfg Corp Liquid level gauge
US2705317A (en) * 1951-04-02 1955-03-29 Gen Motors Corp Illuminatable signals
US2734007A (en) * 1956-02-07 toulmin
US2737146A (en) * 1951-10-16 1956-03-06 Nash Kelvinator Corp Heating element control position indicator for electric range
US2748228A (en) * 1953-05-28 1956-05-29 Wiegand Co Edwin L Indicating means
US2748206A (en) * 1948-12-10 1956-05-29 Andrews John Lewis Multiple electric switch for domestic range
US2753432A (en) * 1952-04-17 1956-07-03 Gen Motors Corp Electrical apparatus
US2766373A (en) * 1954-02-04 1956-10-09 Controls Co Of America Push button operated mechanism
US2863971A (en) * 1949-06-06 1958-12-09 Andrews John Lewis Electric burner switch
US3026398A (en) * 1959-04-22 1962-03-20 Gen Electric Baseboard electric heating system and electric heating units therefor
US3026393A (en) * 1959-04-22 1962-03-20 Gen Electric Baseboard wiring device provided with combination thermostatic switch and manual pushbutton switch temperature control system
US3139018A (en) * 1961-08-23 1964-06-30 Polaroid Corp Photographic light source
US3163739A (en) * 1961-09-13 1964-12-29 Gen Electric Switch with selectively lighted pushbutton actuators
US3169506A (en) * 1963-12-16 1965-02-16 Philco Corp Operation-indicating means for pushbutton-operated mechanism
US3201784A (en) * 1961-09-29 1965-08-17 Ind Electronics Engineers Inc Display apparatus
US3253275A (en) * 1962-12-28 1966-05-24 Herbert H Ast Multilamp indicator assembly
US3336456A (en) * 1966-09-14 1967-08-15 Ark Les Switch Corp Illuminated push button switch
DE1296927B (en) * 1958-06-27 1969-09-18 Siemens Ag Display device for devices of electrical measurement and communication technology
US3517637A (en) * 1968-04-29 1970-06-30 Honeywell Inc Pushbutton signaling arrangement
US3619591A (en) * 1970-02-19 1971-11-09 Gen Dynamics Corp Illuminated pushbuttons using piped light
DE1765678B1 (en) * 1968-06-28 1972-06-08 Siemens Ag ILLUMINATED BUTTON
US3738656A (en) * 1971-09-23 1973-06-12 Brunswick Corp Pinsetter masking
US3978314A (en) * 1974-11-07 1976-08-31 Nobuzo Shimizu Electric hair drier with air blowing condition indicator
US3987668A (en) * 1975-11-17 1976-10-26 Popenoe Charles H Light reflective opti-mechanical displacement microindicator
US4339632A (en) * 1980-11-26 1982-07-13 Bell Telephone Laboratories, Incorporated Button illumination for repertory dialer with low battery voltage indication
US4385221A (en) * 1980-05-19 1983-05-24 Vdo Adolf Schindling Ag Illuminating device for a push-button switch

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US214835A (en) * 1879-04-29 Improvement in systems of lighting
US458850A (en) * 1891-09-01 Jacob jacobs
US755197A (en) * 1902-04-30 1904-03-22 Pressed Prism Plate Glass Co Illuminating structure.
US1791936A (en) * 1926-04-22 1931-02-10 Holophane Co Inc Reflecting luminair
US1823319A (en) * 1927-10-11 1931-09-15 Dickinson William Noble Responsive signal system
US1967745A (en) * 1930-04-02 1934-07-24 Gen Motors Corp Signal device
US2192817A (en) * 1937-07-21 1940-03-05 Sanger Reflector signal
US2265124A (en) * 1939-03-20 1941-12-09 Automatic Instr Company Indexed control apparatus
US2285374A (en) * 1939-10-07 1942-06-02 Telefunken Gmbh Push button for radio apparatus
US2310790A (en) * 1943-02-09 Optical reflecting material

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US214835A (en) * 1879-04-29 Improvement in systems of lighting
US458850A (en) * 1891-09-01 Jacob jacobs
US2310790A (en) * 1943-02-09 Optical reflecting material
US755197A (en) * 1902-04-30 1904-03-22 Pressed Prism Plate Glass Co Illuminating structure.
US1791936A (en) * 1926-04-22 1931-02-10 Holophane Co Inc Reflecting luminair
US1823319A (en) * 1927-10-11 1931-09-15 Dickinson William Noble Responsive signal system
US1967745A (en) * 1930-04-02 1934-07-24 Gen Motors Corp Signal device
US2192817A (en) * 1937-07-21 1940-03-05 Sanger Reflector signal
US2265124A (en) * 1939-03-20 1941-12-09 Automatic Instr Company Indexed control apparatus
US2285374A (en) * 1939-10-07 1942-06-02 Telefunken Gmbh Push button for radio apparatus

Cited By (36)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2734007A (en) * 1956-02-07 toulmin
US2585401A (en) * 1947-10-23 1952-02-12 Wurlitzer Co Wall box for remote control systems
US2550579A (en) * 1948-10-27 1951-04-24 Hotpoint Inc Heating circuit control for electric ranges
US2748206A (en) * 1948-12-10 1956-05-29 Andrews John Lewis Multiple electric switch for domestic range
US2581053A (en) * 1949-01-06 1952-01-01 Robert J Thomas Push button having two positions in one of which it is illuminated
US2863971A (en) * 1949-06-06 1958-12-09 Andrews John Lewis Electric burner switch
US2672551A (en) * 1949-06-09 1954-03-16 Douglas Aircraft Co Inc Self-lighted control operating member
US2609475A (en) * 1949-07-27 1952-09-02 Hotpoint Inc Illuminated backsplasher for electric ranges
US2609476A (en) * 1949-08-19 1952-09-02 Hotpoint Inc Illuminated backsplasher for electric ranges
US2648305A (en) * 1950-02-25 1953-08-11 Westinghouse Electric Corp Illuminated indicating control
US2607874A (en) * 1950-04-03 1952-08-19 Tappan Stove Co Indicator for electric ranges
US2607875A (en) * 1950-05-23 1952-08-19 Tappan Stove Co Indicator for electric ranges
US2686428A (en) * 1950-06-01 1954-08-17 Nathan Mfg Corp Liquid level gauge
US2614162A (en) * 1951-02-07 1952-10-14 Edgar G Smith Currency denomination indicator
US2705317A (en) * 1951-04-02 1955-03-29 Gen Motors Corp Illuminatable signals
US2737146A (en) * 1951-10-16 1956-03-06 Nash Kelvinator Corp Heating element control position indicator for electric range
US2753432A (en) * 1952-04-17 1956-07-03 Gen Motors Corp Electrical apparatus
US2748228A (en) * 1953-05-28 1956-05-29 Wiegand Co Edwin L Indicating means
US2766373A (en) * 1954-02-04 1956-10-09 Controls Co Of America Push button operated mechanism
DE1296927B (en) * 1958-06-27 1969-09-18 Siemens Ag Display device for devices of electrical measurement and communication technology
US3026398A (en) * 1959-04-22 1962-03-20 Gen Electric Baseboard electric heating system and electric heating units therefor
US3026393A (en) * 1959-04-22 1962-03-20 Gen Electric Baseboard wiring device provided with combination thermostatic switch and manual pushbutton switch temperature control system
US3139018A (en) * 1961-08-23 1964-06-30 Polaroid Corp Photographic light source
US3163739A (en) * 1961-09-13 1964-12-29 Gen Electric Switch with selectively lighted pushbutton actuators
US3201784A (en) * 1961-09-29 1965-08-17 Ind Electronics Engineers Inc Display apparatus
US3253275A (en) * 1962-12-28 1966-05-24 Herbert H Ast Multilamp indicator assembly
US3169506A (en) * 1963-12-16 1965-02-16 Philco Corp Operation-indicating means for pushbutton-operated mechanism
US3336456A (en) * 1966-09-14 1967-08-15 Ark Les Switch Corp Illuminated push button switch
US3517637A (en) * 1968-04-29 1970-06-30 Honeywell Inc Pushbutton signaling arrangement
DE1765678B1 (en) * 1968-06-28 1972-06-08 Siemens Ag ILLUMINATED BUTTON
US3619591A (en) * 1970-02-19 1971-11-09 Gen Dynamics Corp Illuminated pushbuttons using piped light
US3738656A (en) * 1971-09-23 1973-06-12 Brunswick Corp Pinsetter masking
US3978314A (en) * 1974-11-07 1976-08-31 Nobuzo Shimizu Electric hair drier with air blowing condition indicator
US3987668A (en) * 1975-11-17 1976-10-26 Popenoe Charles H Light reflective opti-mechanical displacement microindicator
US4385221A (en) * 1980-05-19 1983-05-24 Vdo Adolf Schindling Ag Illuminating device for a push-button switch
US4339632A (en) * 1980-11-26 1982-07-13 Bell Telephone Laboratories, Incorporated Button illumination for repertory dialer with low battery voltage indication

Similar Documents

Publication Publication Date Title
US2437555A (en) Push-button switch
US7142189B2 (en) Arrangement for illuminating a switch surface for a touch sensor switch
US2693165A (en) Visual indicating device
US4277817A (en) Large-area light source
US2648305A (en) Illuminated indicating control
US3433940A (en) Fiber optics instrument lighting
US4339787A (en) Christmas decoration
JPH11329019A (en) Displaying light display
US2537971A (en) Instrument illumination
EP0411065A1 (en) Illuminating system
US2440063A (en) Push-button switch
US3559616A (en) Illuminated instrument pointer
US3761704A (en) Dial illuminating device
US4259800A (en) Display apparatus and associated circuit
JPH01161305A (en) Photoconductor for lighting display element of electric apparatus
GB1537181A (en) Lighting projector for use in surgical operating theatres
US2821800A (en) Duo-panel edge illumination system
US3027668A (en) Panel illuminating system
US20060164832A1 (en) Jewelry lamp
US2898880A (en) Single panel illuminated instrument dial
US1765242A (en) Lamp bulb
US4902876A (en) Electrical cooking apparatus
JPS6484507A (en) Light diffuser
JPS6445003A (en) Panel lighting appliance
JPS63168604A (en) Planar light source for liquid crystal display device