US3588581A - Electric arc sun lamp - Google Patents

Electric arc sun lamp Download PDF

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Publication number
US3588581A
US3588581A US877182A US3588581DA US3588581A US 3588581 A US3588581 A US 3588581A US 877182 A US877182 A US 877182A US 3588581D A US3588581D A US 3588581DA US 3588581 A US3588581 A US 3588581A
Authority
US
United States
Prior art keywords
arc
self
cartridge
electrodes
sun lamp
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
US877182A
Other languages
English (en)
Inventor
Robert P Miller
Marvin Miller
Stephen P Bailey
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.)
Bristol Myers Co
Original Assignee
Bristol Myers Co
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 Bristol Myers Co filed Critical Bristol Myers Co
Application granted granted Critical
Publication of US3588581A publication Critical patent/US3588581A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B31/00—Electric arc lamps
    • H05B31/02—Details
    • H05B31/06—Electrodes
    • H05B31/065—Electrodes for flame arc lamps
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B31/00—Electric arc lamps
    • H05B31/0003—Electric arc lamps the arc being outside, in the open
    • H05B31/0006—Electric arc lamps the arc being outside, in the open with superimposed electrodes
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B31/00—Electric arc lamps
    • H05B31/0018—Electric arc lamps in a closed vessel
    • H05B31/0021—Construction, in particular closure, of the vessel
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B31/00—Electric arc lamps
    • H05B31/02—Details
    • H05B31/06—Electrodes
    • H05B31/14—Metal electrodes
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B31/00—Electric arc lamps
    • H05B31/02—Details
    • H05B31/18—Mountings for electrodes; Electrode feeding devices

Definitions

  • the present invention relates to electrically energized arc lamps utilizing low cost replaceable single use carbonaceous are cartridges to automatically provide a safe controlled exposure of optimum wavelength UV radiation for tanning and therapeutic effect.
  • a single use, low cost are cartridge for plug-in mounting in a selfcontained portable sun lamp housing.
  • a pair of carbonaceous arc electrodes are fixedly mounted on an insulative support with tapered electrode tips maintained in electrical contact to afford a rapid and reliable self-starting characteristic.
  • Low cost electrode elements which produce optimum wavelength UV radiation for skin tanning are advantageously formed by compressing a homogeneous mixture of powdered carbon and a small amount of one or more powdered metals with a binder.
  • the taper-tipped electrodes are dimensioned to produce a predetermined are burning time and hence a safe single exposure for the user. After each use, the burned out cartridge is replaced with a new one.
  • the arc cartridge is mounted in a protective housing having both thermal and electrical interlocks to prevent injurious contact by the user with either a hot or an electrically energized cartridge.
  • FIGS. IA and 18 show side and end elevation views respectively of a unitary arc electrode cartridge made in accordance with the invention
  • FIGS. 2A and 2B show side and end elevation views of a modified unitary arc cartridge having metal band electrical contacts for the electrodes;
  • FIG. 3 is an enlarged plan view showing a preferred are electrode configuration
  • FIG. 4 is a graphical plot showing arc ignition time as a function of the contacting tip diameter
  • FIG. 5 is a graphical plot showing are burning time as a function of electrode diameter
  • FIG. 6 is an electrical schematic diagram for a low cost sun lamp using the replaceable arc cartridge shown in FIGS. I and 2;
  • FIGS. 7A and 7B show front and side elevation views of a sun lamp with the cartridges shown in FIGS. 1 and 2.
  • FIGS. IA and 18 there is shown therein a replaceable plug-in cartridge having a ceramic insulative base 10 with riser sections 10R adapted to rigidly support the terminal ends of carbonaceous electrodes 12A and 128.
  • the are burning tips are tapered cones, preferably with truncated tips, the small flat tip portions being maintained in intimate electrical contact to afford a rapid self-starting operation.
  • the electrode terminal ends are preferably bonded into the receiving slots 105 with a ceramic bonding adhesive such as that manufactured and sold by Sauereisen Co. under the name "Insalute.”
  • the electrode terminal tips IQT are preferably mounted flush with the end surface of 10R so as to be easily accessible for contact with the electrical terminals of a lamp socket.
  • the terminal ends of the carbonaceous electrodes 12A and 12B are rigidly held in operating position in the grooves 205 of risers 20R by electrically conductive metal bands as shown in FIGS. 2A and 28.
  • Support base 20 may be made of any insulative material such as ceramic that can withstand the high arc temperature.
  • the contacting tip sections 9A and 9B of the electrodes are preferably tapered to provide both rapid ignition and controlled burning time.
  • the taper ofthe tips may be continued to provide sharp contacting points, advantageously the tips are truncated to afford a more reliable self-starting electrical contact.
  • the effect which the area of tip contact has on are ignition time is clearly shown in FIG. 4.
  • a conical tip having a slope of about 25 and a truncated circular surface of about 1/32 inch diameter d has been found to provide almost instantaneous ignition time with 10 ampcres current flow through homogeneous electrodes formulated as follows: 78 percent Carbon and Binders, 8 percent Chromium, 7 percent Manganese, 5 percent Iron. l 9% percent Silicon and 0.5 percent Potassium.
  • arc ignition time is increased to more than 25 seconds.
  • the arc electrodes are configured to be not only rapidly self-starting but also self-extinguishing after a predetermined safe period of UV exposure time. From FIG. 4, it will be seen that are burning time is primarily determined by the diameter D of the electrodes. For home sun lamp use, homogeneous electrodes with the above formulation having a diameter D of about 5/32 inch and providing :a 5 minute UV exposure have been found very satisfactory. It will be appreciated that total burning time can also be controlled to a limited extent by changing the angular taper of the conical tips or by controlling AC current flow through the el izctrodes with an adjustable resister. I
  • the cartridge electrodes 12A and 12B are electrically energized from a I20 volt AC household outlet via a housing safety interlock switch 30, a multiple use switch 31, and a current limiting resistor 32.
  • Resistor 32 advantageously comprises an infrared heater element in the form of a "Calrod" unit 32C (as shown in FIG. 7A) which may be separately energized when desired by closing the arc electrode bypass switch 40.
  • Multiple use switchl 3l advantageously includes a normally closed safety tipover switch 41 and a normally closed thermostat switch 42 connected in series with on-off switch 43. In the event the lamp is] accidentally tipped over or becomes overheated, switch 41 .or switch 42 will be opened to deenergize the lamp circuit.
  • FIGS. 7A and 7B A compact low cost metal hdusing 66 for the arc lamp and heat lamp is shown in FIGS. 7A and 7B.
  • the are cartridge is advantageously mounted in socket clips 50, 51 with the electrode elements oriented as shown in a venical plane.
  • Mounted behind the arc cartridge is a compact UV reflector 60.
  • the disposable arc cartridge is readily replaced after one use with a new cartridge by depressing bimetallic lock 61 which only permits the opening of hinged window door 70 after the internal temperature dropped to a safe value.
  • Window 71 in door 70 is advantageously made of filter glass such as No. 7058 made by Corning Glass Company which attenuates the transmission of all light energy below about 3000 angstroms.
  • a large reflector is mounted behind the Calrod resistor to reflect infrared heat energy forwardly through window 71.
  • a self-starting arc lamp electrode cartridge comprising:
  • a..an insulative base having spaced risers for supporting the terminal ends of separate arc electrodes
  • a pair of carbonaceous electrodes each having a terminal end and a tapered are burning end, the respective terminal ends being rigidly secured to the spaced base risers with the tapered are burning ends engaged in electrical contact.
  • An arc lamp electrode cartridge in accordance with claim 1 wherein the tapered ends of the carbonaceous electrodes are truncated and the small flat facing tip xurfaces of the respective electrodes are engaged in intimate electrical contact.
  • a self-starting arc sun lamp comprising:
  • a replaceable arc electrode cartridge having an insulative ceramic base for supporting the terminal ends of separate arc electrodes the tip burning ends being tapered and engaged to provide a starting current electrical contact;
  • a protective housing having an electrically energizeable receptacle for said cartridge
  • a filter glass window for transmitting the UV energy radiated by said are electrodes having wavelengths above about 3000 A.
  • Apparatus in accordance with claim 4 wherein the housing is provided with an access door having a protective latch controlled by a temperature sensitive member.

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  • Radiation-Therapy Devices (AREA)
  • Luminescent Compositions (AREA)
US877182A 1969-11-17 1969-11-17 Electric arc sun lamp Expired - Lifetime US3588581A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US87718269A 1969-11-17 1969-11-17

Publications (1)

Publication Number Publication Date
US3588581A true US3588581A (en) 1971-06-28

Family

ID=25369430

Family Applications (1)

Application Number Title Priority Date Filing Date
US877182A Expired - Lifetime US3588581A (en) 1969-11-17 1969-11-17 Electric arc sun lamp

Country Status (8)

Country Link
US (1) US3588581A (de)
AT (1) AT308280B (de)
AU (1) AU2212670A (de)
CA (1) CA921544A (de)
DE (1) DE2055844A1 (de)
FR (1) FR2069513A5 (de)
GB (1) GB1273704A (de)
NL (1) NL7016570A (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140236136A1 (en) * 2013-02-20 2014-08-21 Epilady 2000, Llc. Hair removal based on ipl

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140236136A1 (en) * 2013-02-20 2014-08-21 Epilady 2000, Llc. Hair removal based on ipl

Also Published As

Publication number Publication date
GB1273704A (en) 1972-05-10
FR2069513A5 (de) 1971-09-03
AT308280B (de) 1973-05-15
DE2055844A1 (de) 1971-05-27
NL7016570A (de) 1971-05-19
CA921544A (en) 1973-02-20
AU2212670A (en) 1972-05-18

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