US2878371A - Light shade - Google Patents

Light shade Download PDF

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Publication number
US2878371A
US2878371A US503523A US50352355A US2878371A US 2878371 A US2878371 A US 2878371A US 503523 A US503523 A US 503523A US 50352355 A US50352355 A US 50352355A US 2878371 A US2878371 A US 2878371A
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United States
Prior art keywords
shade
light
top wall
socket
construction
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Expired - Lifetime
Application number
US503523A
Inventor
Robert A Hanlin
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H & H Products Inc
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H & H Products Inc
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Priority to US503523A priority Critical patent/US2878371A/en
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Publication of US2878371A publication Critical patent/US2878371A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
    • F21V29/50—Cooling arrangements
    • F21V29/70—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks
    • F21V29/83—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks the elements having apertures, ducts or channels, e.g. heat radiation holes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V1/00—Shades for light sources, i.e. lampshades for table, floor, wall or ceiling lamps
    • F21V1/12—Composite shades, i.e. shades being made of distinct parts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
    • F21V29/15—Thermal insulation

Definitions

  • the average electric bulb is of the incandescent type.
  • Still another object of this invention is. to provide an improved light shade construction whichincludesl an outer metal shade and inner shade formed of insulating material, the insulating material being provided with a suitable coating to deflect bpth light. and; heat t whereby. a maximum amount ot light ,is deflectedjrom the light shade, and at the same time, a minimum amount of heat is transmitted to an outer shade.
  • a further object of this invention is to provide an improved inner shade for use in conjunction with metal shades of generally conventional types, the inner shade being so constructed whereby it may be supported by a bulb socket of the light construction and centered with respect to the outer shade.
  • Figure 1 is a perspective view of an electric light incorporating the light shade assembly which is the subject of this invention
  • Figure 2 is a perspective view of the inner insulated shade which is a primary element of the present invention
  • Figure 3 is a vertical sectional view taken substantially on the plane indicated by the section line 3-3 of Figure 1 and shows the specific relationship between the various parts of the shade assembly;
  • Figure 4 is a transverse sectional view taken substantially upon the plane indicated by the section line 4-4 of Figure 3 and shows the manner in which the inner shade is centered with respect to the outer shade.
  • the electric light construction 10 includes an outer shade, which isi'eferred to in general by the reference numeral 12, and inner shade, which is referred to in general by the refercncenumeral 14.; c
  • the outer shade 12 includes a lower truncated conical portion 16 which has connected thereto by an annular flange portion 18 an upper cylindrical portion 20.
  • the cylindrical portion20 terminates in a top wall 22.
  • a light bulb socket 24 Suspended fromf the top wall 22 is a light bulb socket 24.
  • the light bulb socket 24 is maintained imposition with respect to the top wall 22 by a split structure 26.
  • the outer shade 12 is supported by a flexible conduit 28.
  • the conduit 28 is removably connected to the outer shade 12 by means of a fitting .30.
  • The;electrical conductors 32 are connected to the switch assembly 26 and to the light bulb socket 24. n
  • socket 24 Disposed in the light bulb, socket 24 is an upper po'rtion of a conventional electric bulb 3,4 of the incandescent type.
  • a conventional electric bulb 3,4 of the incandescent type When the electric bulb 34 burns, a great amount of heat emits therefrom and is transmitted to the outer shade 12. Inasmuch as the outer shade 12 is normally formed of metal, it becomes overheated and quite hot to the touch. a t
  • the inner shade 14 includes a truncated conical lower portion 36 which is connected to a generally cylindrical upper portion 38.
  • the upper portion 38 terminates in a top wall 40 having a central opening. 42 therethrough.
  • Disposed at the loweredge of the lower portion 36 is a plurality of circumt'erentially spaced, radiat ing tabs 44.
  • the inner surface of the inner shade 14 is provided with a coating of light and heat reflecting material.
  • This material is preferably in the form of either an aluminized coating or a lacquered coating.
  • the cylindrical portion 20 of the outer shade 12 is provided with a plurality of vertically extending, circumferentially spaced louvers 46.
  • the louvers 46 per mit the escape of air which has become heated while being disposed between the outer shade 12 and the inner shade 14.
  • the lower end of the inner shade 14 is spaced from the outer shade 12 with the exception of the tabs 44, it will be readily apparent that air will be permitted to pass up into the space between the outer shade 12 and the inner shade 14. Since the air disposed between the two shades 12 and 14 will become heated, it will rise and pass through the louvers 46. This process is continuously repeated, and thereby forming an air cooling pocket between the shades 12 and 14.
  • This coupled with the reflective coating on the inner surface of the inner shade 14, and the forming of the inner shade 14 of a suitable insulating material, such as asbestos, results in the cooling of the outer shade 12 to a maximum.
  • a light shade construction comprising an outer shade, a socket suspended from said outer shade, means for keeping said outer shade cool, said means including an inner shade suspended from said socket in spaced telescoped relation to said outer shade to form a ventilated air space, said inner shade being formed of a heat insulating material whereby heat transfer to said outer shade is retarded.
  • a light shade construction comprising an outer shade, a socket suspended from saidouter shade, means for keeping said outer shade cool, said means including an inner shade suspended from said socket in spaced telescoped relation to said outer shade to form a ventilated air space, said inner shade having radiating tabs at a lower end thereof, said tabs engaging said outer shade and centering said inner shade, said inner shade being formed of a heat insulating material whereby heat transfer to said outer shade is retarded.
  • said inner and outer shades having tapers of different angles whereby the spacing between said shades increases towards said top Wall.
  • a light shade construction comprising an outer truncated conical shade'having a top wall, a socket suspended from said top wall, means for keeping said outer shade cool, said means including an inner truncated conical shade suspended from said socket in spaced telescoped relation to said outer shade to form a ventilated air space, said inner and outer shades having tapers of difierent angles whereby the spacing between said shades increases towards said top wall, said inner shade having radiating tabs at a lower end thereof, said tabs frictionally engaging said outer shade and centering said inner shade.
  • a light shade construction comprising an outer truncated conical shade having a top wall, a socket suspended from said top wall, means for keeping said outer shade cool, said means including an inner truncated conical shade suspended from said socket in spaced telescoped relation to said outer shade to form a ventilated air space, said inner and outer shades having tapers of dilterent angles whereby the spacing between said shades increases towards said top wall, said .inner shade being formed of a heat insulating material whereby heat transfer to said outer shade is retarded.
  • a light shade construction comprising an outer truncated conical shade having a top wall, a socket suspended from said top wall, means for keeping said outer shade cool, said means including an inner truncated conical shade suspended from said socket in spaced tel'escoped relation to said outer shade to form a ventilated air space, said inner and outer shades having tapers of 'diiierent angles whereby the spacing between said shades increases towards said top wall, said inner shade having radiating tabs at a lower end thereof, said tabs frictiona'lly engaging said outer shade and centering said inner shade, said inner shade "being formed of a heat insulating material 'whereby heat transfer to said outer shade is retarded.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)

Description

March 17, 1959 R. A. HANLIN 2,878,371
LIGHT SHADE Filed April 25. 1955 Robert A. Han/in INVENTOR.
4.14am. BY w zzq,
i a large amount of heat.
United States Patent LIGHT SHADE Robert A. Hanlin, Logansport, Ind., assignor to H & H
Fdilglducts, Inc., Logansport, Ind., a corporation of In- Application April 25, 1955, Serial Na. 505,513 6 Claims. (Cl. 240-41 This invention relates in general to new and useful improvementsin electric lights, and more specifically to 1 an improved shade construction for electric lights.
The average electric bulb is of the incandescent type.
1 Therefore, when the bulb :burns, in order to emit light,
there is also produced a relativelylarge quantity of heat.
light bulb will have heat transmitted thereto. I nasmuch as people often come into contact with the shade, it is very desirable that the shade be relatively cool to Due to this heat ,being emitted by the light bulb, any shade, particularly a metal shade, surrounding the the touch in orderjtoprevcnt both injury and momentary.
lightashade construction exposed to the touch remains.
relatively-cool although the light bulb disposedtherein has been burning for a long period of time and emitting Still another object of this invention is. to provide an improved light shade construction whichincludesl an outer metal shade and inner shade formed of insulating material, the insulating material being provided with a suitable coating to deflect bpth light. and; heat t whereby. a maximum amount ot light ,is deflectedjrom the light shade, and at the same time, a minimum amount of heat is transmitted to an outer shade.
A further object of this invention is to provide an improved inner shade for use in conjunction with metal shades of generally conventional types, the inner shade being so constructed whereby it may be supported by a bulb socket of the light construction and centered with respect to the outer shade.
These together with other objects and advantages which will become subsequently apparent reside in the details of construction and operation as more fully here inafter described and claimed, reference being had to the accompanying drawings forming a part hereof, wherein like numerals refer to like parts throughout, and in which:
Figure 1 is a perspective view of an electric light incorporating the light shade assembly which is the subject of this invention;
Figure 2 is a perspective view of the inner insulated shade which is a primary element of the present invention;
Figure 3 is a vertical sectional view taken substantially on the plane indicated by the section line 3-3 of Figure 1 and shows the specific relationship between the various parts of the shade assembly; and
Figure 4 is a transverse sectional view taken substantially upon the plane indicated by the section line 4-4 of Figure 3 and shows the manner in which the inner shade is centered with respect to the outer shade.
Referring now to the drawings in detail, it will be seen that there is illustrated an electric light construction which is referred to in general by the reference shade 14.
2,878,371 Patented Mar. 1
ice
numeral 10. The electric light construction 10 includes an outer shade, which isi'eferred to in general by the reference numeral 12, and inner shade, which is referred to in general by the refercncenumeral 14.; c
The outer shade 12 includes a lower truncated conical portion 16 which has connected thereto by an annular flange portion 18 an upper cylindrical portion 20. The cylindrical portion20 terminates in a top wall 22.
Suspended fromf the top wall 22 is a light bulb socket 24. The light bulb socket 24 is maintained imposition with respect to the top wall 22 by a split structure 26.
The outer shade 12 is supported by a flexible conduit 28. The conduit 28 is removably connected to the outer shade 12 by means of a fitting .30. Extending through the conduit 28, which also functionswas a support, is a pair of electrical conductors 32. The;electrical conductors 32 are connected to the switch assembly 26 and to the light bulb socket 24. n
Disposed in the light bulb, socket 24 is an upper po'rtion of a conventional electric bulb 3,4 of the incandescent type. When the electric bulb 34 burns, a great amount of heat emits therefrom and is transmitted to the outer shade 12. Inasmuch as the outer shade 12 is normally formed of metal, it becomes overheated and quite hot to the touch. a t
In order to overcome the heating of the outer shade 12, there is mounted within the outer shade 12 the inner The inner shade 14 includes a truncated conical lower portion 36 which is connected to a generally cylindrical upper portion 38. The upper portion 38 terminates in a top wall 40 having a central opening. 42 therethrough. Disposed at the loweredge of the lower portion 36 is a plurality of circumt'erentially spaced, radiat ing tabs 44. l
Referring .now
to Figure?) in particular, itiwill be seen that when the inner shade 14 is positioned within the outer shade 12,.the cylindrical portion 38 is telescoped over the light bulb socket 24 and the top wall 40 rests up on the upper end ofthe light bulb socke tg24. Also, the switch assembly 26 passes through" the opening 42 in the top wall 40. The lower portion of the inner shade 14 is centered with respect to the outer shade 12 by the tabs 44, the tabs 44 being of a size to engage the inner surface of the outer shade 12.
In order that a maximum amount of light may be reflected from the inner shade 14 and at the same time, a maximum amount of heat ay be reflected away from the outer shade 12, the inner surface of the inner shade 14 is provided with a coating of light and heat reflecting material. This material is preferably in the form of either an aluminized coating or a lacquered coating.
The cylindrical portion 20 of the outer shade 12 is provided with a plurality of vertically extending, circumferentially spaced louvers 46. The louvers 46 per mit the escape of air which has become heated while being disposed between the outer shade 12 and the inner shade 14. Inasmuch as the lower end of the inner shade 14 is spaced from the outer shade 12 with the exception of the tabs 44, it will be readily apparent that air will be permitted to pass up into the space between the outer shade 12 and the inner shade 14. Since the air disposed between the two shades 12 and 14 will become heated, it will rise and pass through the louvers 46. This process is continuously repeated, and thereby forming an air cooling pocket between the shades 12 and 14. This, coupled with the reflective coating on the inner surface of the inner shade 14, and the forming of the inner shade 14 of a suitable insulating material, such as asbestos, results in the cooling of the outer shade 12 to a maximum.
The foregoing is considered illustrative only of the principles of the invention. Further, since numerous modifications and changes will readily occur to those skilled in the art, it is not desired to limit the invention to the exact construction, and operation shown and described, and accordinglyf a'll suitable modifications and equivalents may be resorted to, falling within the scope of the invention as claimed.
What is claimed as new is as follows:
1. A light shade construction comprising an outer shade, a socket suspended from said outer shade, means for keeping said outer shade cool, said means including an inner shade suspended from said socket in spaced telescoped relation to said outer shade to form a ventilated air space, said inner shade being formed of a heat insulating material whereby heat transfer to said outer shade is retarded.
2. A light shade construction comprising an outer shade, a socket suspended from saidouter shade, means for keeping said outer shade cool, said means including an inner shade suspended from said socket in spaced telescoped relation to said outer shade to form a ventilated air space, said inner shade having radiating tabs at a lower end thereof, said tabs engaging said outer shade and centering said inner shade, said inner shade being formed of a heat insulating material whereby heat transfer to said outer shade is retarded.
tilated air space, said inner and outer shades having tapers of different angles whereby the spacing between said shades increases towards said top Wall.
4. A light shade construction comprising an outer truncated conical shade'having a top wall, a socket suspended from said top wall, means for keeping said outer shade cool, said means including an inner truncated conical shade suspended from said socket in spaced telescoped relation to said outer shade to form a ventilated air space, said inner and outer shades having tapers of difierent angles whereby the spacing between said shades increases towards said top wall, said inner shade having radiating tabs at a lower end thereof, said tabs frictionally engaging said outer shade and centering said inner shade.
5. A light shade construction comprising an outer truncated conical shade having a top wall, a socket suspended from said top wall, means for keeping said outer shade cool, said means including an inner truncated conical shade suspended from said socket in spaced telescoped relation to said outer shade to form a ventilated air space, said inner and outer shades having tapers of dilterent angles whereby the spacing between said shades increases towards said top wall, said .inner shade being formed of a heat insulating material whereby heat transfer to said outer shade is retarded.
6. A light shade construction comprising an outer truncated conical shade having a top wall, a socket suspended from said top wall, means for keeping said outer shade cool, said means including an inner truncated conical shade suspended from said socket in spaced tel'escoped relation to said outer shade to form a ventilated air space, said inner and outer shades having tapers of 'diiierent angles whereby the spacing between said shades increases towards said top wall, said inner shade having radiating tabs at a lower end thereof, said tabs frictiona'lly engaging said outer shade and centering said inner shade, said inner shade "being formed of a heat insulating material 'whereby heat transfer to said outer shade is retarded.
References Cited inthe-file of-this patent UNITED STATES PATENTS 1,242,808 Hutton Oct. 9, 1917 1,323,819 Bohan Dec. 2, 1919 1,430,860 Swimmer Oct. 3, 1922 1,444,930 McKeever Feb. '13, 1923 1,963,279 Pieper June 19, 1934 2,236,303 Skinner et a1. Mar. 25, 1941 2,312,561 Leonard Mar. 2, 1943 FOREIGN PATENTS 115,994 Germany Dec. 19, 1900 193,458 Switzerland Dec. 16, 1937 3 24 .27 eat r t n M y 5, 1 2-
US503523A 1955-04-25 1955-04-25 Light shade Expired - Lifetime US2878371A (en)

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Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2945946A (en) * 1957-07-22 1960-07-19 Dillon W Moffatt Lamp
US3112076A (en) * 1960-09-19 1963-11-26 Sunbeam Lighting Company Spotlight lamp
US3202815A (en) * 1963-01-08 1965-08-24 Esquire Inc Lighting equipment
US3428798A (en) * 1967-03-13 1969-02-18 Hilzen H Y Electrical lighting fixtures with heat-collecting and heat-dissipating means
US3435199A (en) * 1966-10-05 1969-03-25 Casco Products Corp Illuminated vanity mirror
US3466437A (en) * 1966-11-03 1969-09-09 Holophane Co Inc Refractor
US3711702A (en) * 1970-11-02 1973-01-16 T Adra Heavy duty floodlight
US3790773A (en) * 1971-10-04 1974-02-05 R Sapper Lamp with an articulated support
US4032771A (en) * 1973-02-06 1977-06-28 Original Hanau Quarzlampen Gmbh Surgical operating lamp
US4180851A (en) * 1977-10-31 1979-12-25 Ericson Manufacturing Company Ventilated lamp guard
US4302801A (en) * 1979-10-22 1981-11-24 Duddy James J Low temperature reflector for industrial lamp
DE3543087A1 (en) * 1985-12-05 1987-06-19 Stiers Unterhaltungselektronik Light emitter
US4809145A (en) * 1987-01-21 1989-02-28 Bennett Martin B Free-standing (self-supporting) lamp shade
US5655833A (en) * 1995-06-07 1997-08-12 Control Alt Design Ltd. Free-standing task lighting fixture
USD431092S (en) * 1999-09-01 2000-09-19 Regent Lighting Corporation Outdoor lamp cover
US20050036322A1 (en) * 2003-07-28 2005-02-17 Veffer Samuel C. Lamp
US9541262B2 (en) 2014-12-30 2017-01-10 LIGHTING and SUPPLIES, INC Shabbat bulb
USD843552S1 (en) * 2017-05-02 2019-03-19 P.S. Pibbs, Inc. Four-headed heating lamp assembly with adjustable arms
USD988579S1 (en) * 2020-11-09 2023-06-06 Andon Health Co., Ltd. Floor lamp

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE115994C (en) *
US1242808A (en) * 1916-08-02 1917-10-09 Ernest S Hutton Lamp structure.
US1323819A (en) * 1919-12-02 William j
US1430860A (en) * 1919-11-24 1922-10-03 Swimmer Robert Electric lamp
US1444930A (en) * 1922-03-04 1923-02-13 Mckeever Charles Vehicle lamp
GB372127A (en) * 1931-06-09 1932-05-05 Francisco Silva Improvements in and relating to light projectors
US1963279A (en) * 1933-03-17 1934-06-19 Alphonse F Pieper Operating lamp
CH193458A (en) * 1936-12-02 1937-10-15 Fadutub A G Device for shielding electrical lamps.
US2236303A (en) * 1939-11-25 1941-03-25 Folmer Graflex Corp Photographic printer for restitutional, enlarging, and other purposes
US2312561A (en) * 1941-02-12 1943-03-02 Jur Amsco Corp De Photographic enlarger

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE115994C (en) *
US1323819A (en) * 1919-12-02 William j
US1242808A (en) * 1916-08-02 1917-10-09 Ernest S Hutton Lamp structure.
US1430860A (en) * 1919-11-24 1922-10-03 Swimmer Robert Electric lamp
US1444930A (en) * 1922-03-04 1923-02-13 Mckeever Charles Vehicle lamp
GB372127A (en) * 1931-06-09 1932-05-05 Francisco Silva Improvements in and relating to light projectors
US1963279A (en) * 1933-03-17 1934-06-19 Alphonse F Pieper Operating lamp
CH193458A (en) * 1936-12-02 1937-10-15 Fadutub A G Device for shielding electrical lamps.
US2236303A (en) * 1939-11-25 1941-03-25 Folmer Graflex Corp Photographic printer for restitutional, enlarging, and other purposes
US2312561A (en) * 1941-02-12 1943-03-02 Jur Amsco Corp De Photographic enlarger

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2945946A (en) * 1957-07-22 1960-07-19 Dillon W Moffatt Lamp
US3112076A (en) * 1960-09-19 1963-11-26 Sunbeam Lighting Company Spotlight lamp
US3202815A (en) * 1963-01-08 1965-08-24 Esquire Inc Lighting equipment
US3435199A (en) * 1966-10-05 1969-03-25 Casco Products Corp Illuminated vanity mirror
US3466437A (en) * 1966-11-03 1969-09-09 Holophane Co Inc Refractor
US3428798A (en) * 1967-03-13 1969-02-18 Hilzen H Y Electrical lighting fixtures with heat-collecting and heat-dissipating means
US3711702A (en) * 1970-11-02 1973-01-16 T Adra Heavy duty floodlight
US3790773A (en) * 1971-10-04 1974-02-05 R Sapper Lamp with an articulated support
US4032771A (en) * 1973-02-06 1977-06-28 Original Hanau Quarzlampen Gmbh Surgical operating lamp
US4180851A (en) * 1977-10-31 1979-12-25 Ericson Manufacturing Company Ventilated lamp guard
US4302801A (en) * 1979-10-22 1981-11-24 Duddy James J Low temperature reflector for industrial lamp
DE3543087A1 (en) * 1985-12-05 1987-06-19 Stiers Unterhaltungselektronik Light emitter
US4809145A (en) * 1987-01-21 1989-02-28 Bennett Martin B Free-standing (self-supporting) lamp shade
US5655833A (en) * 1995-06-07 1997-08-12 Control Alt Design Ltd. Free-standing task lighting fixture
USD431092S (en) * 1999-09-01 2000-09-19 Regent Lighting Corporation Outdoor lamp cover
US20050036322A1 (en) * 2003-07-28 2005-02-17 Veffer Samuel C. Lamp
US9541262B2 (en) 2014-12-30 2017-01-10 LIGHTING and SUPPLIES, INC Shabbat bulb
USD843552S1 (en) * 2017-05-02 2019-03-19 P.S. Pibbs, Inc. Four-headed heating lamp assembly with adjustable arms
USD988579S1 (en) * 2020-11-09 2023-06-06 Andon Health Co., Ltd. Floor lamp

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