CA2072783A1 - Adjustable lamp - Google Patents
Adjustable lampInfo
- Publication number
- CA2072783A1 CA2072783A1 CA 2072783 CA2072783A CA2072783A1 CA 2072783 A1 CA2072783 A1 CA 2072783A1 CA 2072783 CA2072783 CA 2072783 CA 2072783 A CA2072783 A CA 2072783A CA 2072783 A1 CA2072783 A1 CA 2072783A1
- Authority
- CA
- Canada
- Prior art keywords
- arm
- sphere
- lamp
- adjustable lamp
- light fixture
- 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.)
- Abandoned
Links
Landscapes
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
ADJUSTABLE LAMP
Abstract of the Disclosure The invention provides an adjustable lamp in which two counterbalanced arms are supported on a universal joint to provide complete adjustability. The universal joint is formed by a sphere which sits freely in a socket in the supporting surfaces. The same lamp can be moved from one type of supporting surface to another.
Abstract of the Disclosure The invention provides an adjustable lamp in which two counterbalanced arms are supported on a universal joint to provide complete adjustability. The universal joint is formed by a sphere which sits freely in a socket in the supporting surfaces. The same lamp can be moved from one type of supporting surface to another.
Description
~17~7~3 ~DJUSTABLE L~MP
Technical Field The invention relates to adjustable lamps, and more particularly to lamps in which the light fixture can be extended or rotated in relation to a supporting base.
Background Art The currently popular form of adjustable canti-levered lamp for use on desks, tables or in connection with reclining chairs utilizes a base, or a base clamp, and two pivoting arms, at the end of which a light fixture is pivotally mounted. A pair of coil springs extends between each arm and the adjoining pivot frame. The unit can be rotated about a pin which sits in a socket in the support-ing base. In this way the light fixture can be moved to a position close to the supporting surface by folding the arms, or extended the full combined length of the two arms in cantilevered fashion. A drawback with this design however is that as the coil springs lose their strength, the lamp will no longer be able to remain extended to certain positions. There is therefore a need for an adjust-able cantilevered lamp which retains its ability to beextended or retracted indefinitely.
Disclosure of Invention The invention provides an adjustable lamp in which two counterbalanced arms are supported on a universal joint to provide complete adjustability. The universal joint is formed by a sphere which sits freely in a socket in the supporting surfaces. The same lamp can be moved from one type of supporting surface to another.
The invention provides an adjustable lamp com-prising a) a first arm having first and second ends and a first counterweight secured to the first end thereof; b) a 2~78~
second arm, pivotally mounted adjacent the second end of the first arm, and having first and second ends and a second counterweight secured to the first end thereof; c) an electric light fixture pivotally mounted adjacent the second end of the second arm; d) electrical conduction meas for providing electrical energy to the light fixture from an electrical outlet; e) a sphere secured on the first arm so that the first arm extends diametrically through the sphere; and f) means for rotatably supporting the sphere, comprising a surface provided with a circular aperture having a diameter less than that of the sphere;
wherein the weight of the first and second counterweights, the position of the sphere on the first arm and the posi-tion of the pivotal mounting of the second arm on the first arm are selected so that the weight of the light fixture is balance d by the counterweights in all orientations of said lamp.
Brief Description of Drawinqs With reference to the ~rawings, in which a preferred embodiment of the invention is disclosed:
Fig. 1 is a side elevation of the invention mounted on a side table;
Fig. lA is a top view of the side table shown in Fig. 1 with an alternate table top shape in dotted outline;
Fig. 2 is a side elevation of the invention mounted on wall and ceiling supports;
Fig. 2A is a side elevation of the invention mounted on a floor base;
Fig. 3 is a partial cross-section of the lighting fixture of the invention;
Fig. 4 is an exploded detail, partly in section, of the pivot connection for the light fixture shown in Fig.
Technical Field The invention relates to adjustable lamps, and more particularly to lamps in which the light fixture can be extended or rotated in relation to a supporting base.
Background Art The currently popular form of adjustable canti-levered lamp for use on desks, tables or in connection with reclining chairs utilizes a base, or a base clamp, and two pivoting arms, at the end of which a light fixture is pivotally mounted. A pair of coil springs extends between each arm and the adjoining pivot frame. The unit can be rotated about a pin which sits in a socket in the support-ing base. In this way the light fixture can be moved to a position close to the supporting surface by folding the arms, or extended the full combined length of the two arms in cantilevered fashion. A drawback with this design however is that as the coil springs lose their strength, the lamp will no longer be able to remain extended to certain positions. There is therefore a need for an adjust-able cantilevered lamp which retains its ability to beextended or retracted indefinitely.
Disclosure of Invention The invention provides an adjustable lamp in which two counterbalanced arms are supported on a universal joint to provide complete adjustability. The universal joint is formed by a sphere which sits freely in a socket in the supporting surfaces. The same lamp can be moved from one type of supporting surface to another.
The invention provides an adjustable lamp com-prising a) a first arm having first and second ends and a first counterweight secured to the first end thereof; b) a 2~78~
second arm, pivotally mounted adjacent the second end of the first arm, and having first and second ends and a second counterweight secured to the first end thereof; c) an electric light fixture pivotally mounted adjacent the second end of the second arm; d) electrical conduction meas for providing electrical energy to the light fixture from an electrical outlet; e) a sphere secured on the first arm so that the first arm extends diametrically through the sphere; and f) means for rotatably supporting the sphere, comprising a surface provided with a circular aperture having a diameter less than that of the sphere;
wherein the weight of the first and second counterweights, the position of the sphere on the first arm and the posi-tion of the pivotal mounting of the second arm on the first arm are selected so that the weight of the light fixture is balance d by the counterweights in all orientations of said lamp.
Brief Description of Drawinqs With reference to the ~rawings, in which a preferred embodiment of the invention is disclosed:
Fig. 1 is a side elevation of the invention mounted on a side table;
Fig. lA is a top view of the side table shown in Fig. 1 with an alternate table top shape in dotted outline;
Fig. 2 is a side elevation of the invention mounted on wall and ceiling supports;
Fig. 2A is a side elevation of the invention mounted on a floor base;
Fig. 3 is a partial cross-section of the lighting fixture of the invention;
Fig. 4 is an exploded detail, partly in section, of the pivot connection for the light fixture shown in Fig.
3;
2~27~
Fig. 5 is a sectional view of the conductive cap shown in Fig. 3;
Fig. 6 is a partial cross-section of the pivot connection of the two arms of the invention;
Fig. 7 is a partial cross-section of the pivot connection of the two arms of the invention, rotated 90 degrees from Fig. 6;
Fig. 8 is an exploded detail, partly in section, of the pivot connection shown in Fig. 6;
Fig. 9 is a top view of a sphere and socket according to one embodiment of the invention;
Fig. 10 is a cross-sectional view taken along lines X-X of Fig. 9; and Fig. 11 is a cross-sectional view taken along lines XI-XI of Fig. 9.
Best Mode(s) For Carrying Out the Invention With reference to Fig. 1, the lamp of the inven-tion, designated 10, is supported on a wheeled side table 12. Lamp 10 has a light fixture 14 which is connected by a pivot connection 16 to the end of a hollow arm 18. Arm 18 has a counterweight 20 fixed to the opposite end from light fixture 14. At a point approximately 1/4 of the length of arm 18 from the end of the arm bearing counterweight 20, arm 18 is pivotally connected to the end of a second hollow arm 24 by pivot connection 22. A second counterweight 26 is secured to the end of arm 24, and arm 24 extends diametri-cally through spherical ball 28 which is fixed to the arm at a point close to the counterweighted end of the arm.
Table 12 has a planar upper table surface 30 which is provided at one end with a circular cutout 32 of diameter slightly less than that of sphere 28. Cutout 32 has a smoothly rounded edge, preferably with a TeflonTM or 2~727~3 similar surface, to permit sphere 28 to rotate smoothly therein. Sphere 28 sits freely in cutout 32 and is retained in cutout 32 only by the weight of the lamp 10 and arm assembly 18, 24.
In the embodiment shown, table 12 has wheels 34 and the table surface 30 is supported by three posts 36 which can be raised or lowered in housing 38 using known pneumatic adjustment devices to provide a variable height for the table surface. Fig. lA shows an alternate table top shape as dotted outline 31, with alternate cutout location 33.
Light fixture 14 is provided with a 12-volt electrical supply by transformer 40 and conductor 42 which enters the hollow centre of arm 24 at the base of sphere 28 and travels down the hollow centres of arms 24 and 18.
Fig. 1 illustrates in phantom outline how the position of light fixture 14 is readily adjustable. The weight of counterweight 20 is selected to exactly counter-balance the weight of light fixture 14 about fulcrum point 19. Similarly the weight of counterweight 26 is selected to exactly counterbalance the weight of the combined arm assembly consisting of light fixture 14, arm 18 and coun-terweight 20 on the end of arm 24 about the fulcrum point which is the centre of sphere 28. In this way sphere 28 and cutout 32 serve as a universal joint which permits the light fixture to be extended, such as to the position shown in phantom outline in Figure 1, or pivoted around the centre of sphere 28 in a horizontal plane, all with little e~fort.
Fig. 2 and 2A illustrate how the lamp 10 of the invention can be adapted to other supports, to act as a wall, ceiling or floor lamp. A support 50 is secured to ceiling 52. It has a horizontal planar element 54 in which a circular cutout for receiving sphere 28 is provided as in cutout 32 in table 12, although in this application the counterweight 26 is above the fixture 14. Similarly, a wall ~7~783 plate 60 can be secured to a wall 62. A horizontally extending planar element 64 is fixed along one edge thereof to plate 60, and again is provided with the circular cutout for receiving sphere 28 as in cutout 32 in table 12. Planar element 64 could also be supported by a freestanding flexible support 70 mounted on a base 72 to provide a floor lamp as shown in Fig. 2A. It will be apparent that the same lamp 10 could be moved from table 12 to ceiling support 50 to wall support 62 to floor support 70 to fulfil all of these functions as desired. To move the lamp from a given cutout 32 to another support, a slot wide enough to permit the passage of arm 24 could be provided in the supporting surface, so that the sphere 28 could be lifted out of the cutout and the arm 24 removed from the support.
Alternatively the counterweight 26 could be made removable, by unthreading or the like, to permit the arm 24 to be removed from and replaced in cutout 32.
Fig. 3 illustrates the preferred form of light fixture 14 and electrical connection for same. In this embodiment, arms 18 and 24 act as electrical conductors for the 12 volt charge, so such arms are manufactured from aluminum or other conductive metal. The light bulb (not shown) is mounted in a reflector 80 which in turn is fixed to base 82 in cylindrical fixture 84. Cylinder 84 is rotatably supported on two cylindrical knobs 86, 87 which rotate in holes in the ends of forks 90, 91. Cylindrical caps 88, 89 are press fitted over the ends of knobs 86, 87 to make conductive contact between the forks and conductors (not shown) within the knobs which carry the electrical power to the light bulb. The opposite ends of forks 90, 91 have holes 92 through which pins 94 are inserted. Pins 94 are inserted through holes 95 in jacket 96 and secured by a friction fit in apertures 95. Fitting 98 is held in the open end of arm 18. It has an annular groove 97 in which 3 the ends of pins 94 sit with a slight clearance to prevent jacket 96 from being pulled off the end of arm 18 when pins 94 are in place, but which permits jacket 96 to rotate ~7~7~
around the longitudinal axis of arm 18. One insulated conductor 99 extends up the centre of arm 18, through the centre of fitting 98.
As shown in Fig. 5, the end of conductor 99 is held in place by a conductive cap 100, which in turn makes conductive contact with spring 101 (Fig. 3). Conductive cap 100 is forced over the end of fitting 98 to firmly secure the ends of conductor 99 in an electrically conductive contact, as in cap 88. Spring 101 in turn makes conductive contact with fork 90. A second spring 102 makes a conduc-tive connection between fork 91 and the outside of arm 18 which is carrying the opposite electrical potential to that in conductor 99.
Fig. 6, 7 and 8 illustrate the preferred manner in which the electrical connection is made between arms 18 and 24. The end of arm 24 is held in jacket 110, which interacts with fitting 121 in the same manner as jacket 96 and fitting 98 above. Arm 18 is held in cylindrical casing 112 which has cylindrical knobs 114, 115 over the ends of 20 which are press fitted conductive caps 116, 117 which rotate in holes in forks 118, 119. Pins 94 hold forks 118, 119 in a pivotal relationship to arm 24, the ends of pins 94 being held in a friction fit in apertures 111 of jacket 110, the ends of the pins extending into groove 120 of 25 fitting 121. As in Fig. 5, a central conductor 122 make contact and is held by cap 100. A spring 124 makes an electrical connection between cap 100 and fork 119. Simi-larly a second spring 126 makes electrical connection between fork 118 and the outside surface of arm 24. Socket 30 116 makes an electrical connection between fork 118 and the top half of casing 112, which in turn connects to the outside surface of arm 18 while socket 117 connects fork 119 to insulated conductor 99 which runs up the centre of arm 18.
Fig. 9, 10 and 11 illustrate how the sphere 28 may be constructed to act as a switch. The exterior of sphere 28 forms two conductive hemispheres 1~0, 142 (Fig.
20727~3 9) separated by a non-conductive annulus 144. Brushes 143, 145 provide electrical energy to the two hemispheres which in turn are electrically connected to conductor 122 and arm 24. By twisting sphere 28, by means of the lamp arms, until the brushes rest on non-conductive strip 144, the power to the fixture is cut off. It is turned on again by twisting the sphere 28 until the brushes contact the conductive hemispheres. In this embodiment, joint 22 will be rigid to permit the sphere to be turned by swinging the lamp fix-ture.
As will be apparent to those skilled in the art in the light of the foregoing disclosure, many alterations and modifications are possible in the practice of this invention without departing from the spirit or scope thereof. Accordingly, the scope of the invention is to be construed in accordance with the substance defined by the following claims.
2~27~
Fig. 5 is a sectional view of the conductive cap shown in Fig. 3;
Fig. 6 is a partial cross-section of the pivot connection of the two arms of the invention;
Fig. 7 is a partial cross-section of the pivot connection of the two arms of the invention, rotated 90 degrees from Fig. 6;
Fig. 8 is an exploded detail, partly in section, of the pivot connection shown in Fig. 6;
Fig. 9 is a top view of a sphere and socket according to one embodiment of the invention;
Fig. 10 is a cross-sectional view taken along lines X-X of Fig. 9; and Fig. 11 is a cross-sectional view taken along lines XI-XI of Fig. 9.
Best Mode(s) For Carrying Out the Invention With reference to Fig. 1, the lamp of the inven-tion, designated 10, is supported on a wheeled side table 12. Lamp 10 has a light fixture 14 which is connected by a pivot connection 16 to the end of a hollow arm 18. Arm 18 has a counterweight 20 fixed to the opposite end from light fixture 14. At a point approximately 1/4 of the length of arm 18 from the end of the arm bearing counterweight 20, arm 18 is pivotally connected to the end of a second hollow arm 24 by pivot connection 22. A second counterweight 26 is secured to the end of arm 24, and arm 24 extends diametri-cally through spherical ball 28 which is fixed to the arm at a point close to the counterweighted end of the arm.
Table 12 has a planar upper table surface 30 which is provided at one end with a circular cutout 32 of diameter slightly less than that of sphere 28. Cutout 32 has a smoothly rounded edge, preferably with a TeflonTM or 2~727~3 similar surface, to permit sphere 28 to rotate smoothly therein. Sphere 28 sits freely in cutout 32 and is retained in cutout 32 only by the weight of the lamp 10 and arm assembly 18, 24.
In the embodiment shown, table 12 has wheels 34 and the table surface 30 is supported by three posts 36 which can be raised or lowered in housing 38 using known pneumatic adjustment devices to provide a variable height for the table surface. Fig. lA shows an alternate table top shape as dotted outline 31, with alternate cutout location 33.
Light fixture 14 is provided with a 12-volt electrical supply by transformer 40 and conductor 42 which enters the hollow centre of arm 24 at the base of sphere 28 and travels down the hollow centres of arms 24 and 18.
Fig. 1 illustrates in phantom outline how the position of light fixture 14 is readily adjustable. The weight of counterweight 20 is selected to exactly counter-balance the weight of light fixture 14 about fulcrum point 19. Similarly the weight of counterweight 26 is selected to exactly counterbalance the weight of the combined arm assembly consisting of light fixture 14, arm 18 and coun-terweight 20 on the end of arm 24 about the fulcrum point which is the centre of sphere 28. In this way sphere 28 and cutout 32 serve as a universal joint which permits the light fixture to be extended, such as to the position shown in phantom outline in Figure 1, or pivoted around the centre of sphere 28 in a horizontal plane, all with little e~fort.
Fig. 2 and 2A illustrate how the lamp 10 of the invention can be adapted to other supports, to act as a wall, ceiling or floor lamp. A support 50 is secured to ceiling 52. It has a horizontal planar element 54 in which a circular cutout for receiving sphere 28 is provided as in cutout 32 in table 12, although in this application the counterweight 26 is above the fixture 14. Similarly, a wall ~7~783 plate 60 can be secured to a wall 62. A horizontally extending planar element 64 is fixed along one edge thereof to plate 60, and again is provided with the circular cutout for receiving sphere 28 as in cutout 32 in table 12. Planar element 64 could also be supported by a freestanding flexible support 70 mounted on a base 72 to provide a floor lamp as shown in Fig. 2A. It will be apparent that the same lamp 10 could be moved from table 12 to ceiling support 50 to wall support 62 to floor support 70 to fulfil all of these functions as desired. To move the lamp from a given cutout 32 to another support, a slot wide enough to permit the passage of arm 24 could be provided in the supporting surface, so that the sphere 28 could be lifted out of the cutout and the arm 24 removed from the support.
Alternatively the counterweight 26 could be made removable, by unthreading or the like, to permit the arm 24 to be removed from and replaced in cutout 32.
Fig. 3 illustrates the preferred form of light fixture 14 and electrical connection for same. In this embodiment, arms 18 and 24 act as electrical conductors for the 12 volt charge, so such arms are manufactured from aluminum or other conductive metal. The light bulb (not shown) is mounted in a reflector 80 which in turn is fixed to base 82 in cylindrical fixture 84. Cylinder 84 is rotatably supported on two cylindrical knobs 86, 87 which rotate in holes in the ends of forks 90, 91. Cylindrical caps 88, 89 are press fitted over the ends of knobs 86, 87 to make conductive contact between the forks and conductors (not shown) within the knobs which carry the electrical power to the light bulb. The opposite ends of forks 90, 91 have holes 92 through which pins 94 are inserted. Pins 94 are inserted through holes 95 in jacket 96 and secured by a friction fit in apertures 95. Fitting 98 is held in the open end of arm 18. It has an annular groove 97 in which 3 the ends of pins 94 sit with a slight clearance to prevent jacket 96 from being pulled off the end of arm 18 when pins 94 are in place, but which permits jacket 96 to rotate ~7~7~
around the longitudinal axis of arm 18. One insulated conductor 99 extends up the centre of arm 18, through the centre of fitting 98.
As shown in Fig. 5, the end of conductor 99 is held in place by a conductive cap 100, which in turn makes conductive contact with spring 101 (Fig. 3). Conductive cap 100 is forced over the end of fitting 98 to firmly secure the ends of conductor 99 in an electrically conductive contact, as in cap 88. Spring 101 in turn makes conductive contact with fork 90. A second spring 102 makes a conduc-tive connection between fork 91 and the outside of arm 18 which is carrying the opposite electrical potential to that in conductor 99.
Fig. 6, 7 and 8 illustrate the preferred manner in which the electrical connection is made between arms 18 and 24. The end of arm 24 is held in jacket 110, which interacts with fitting 121 in the same manner as jacket 96 and fitting 98 above. Arm 18 is held in cylindrical casing 112 which has cylindrical knobs 114, 115 over the ends of 20 which are press fitted conductive caps 116, 117 which rotate in holes in forks 118, 119. Pins 94 hold forks 118, 119 in a pivotal relationship to arm 24, the ends of pins 94 being held in a friction fit in apertures 111 of jacket 110, the ends of the pins extending into groove 120 of 25 fitting 121. As in Fig. 5, a central conductor 122 make contact and is held by cap 100. A spring 124 makes an electrical connection between cap 100 and fork 119. Simi-larly a second spring 126 makes electrical connection between fork 118 and the outside surface of arm 24. Socket 30 116 makes an electrical connection between fork 118 and the top half of casing 112, which in turn connects to the outside surface of arm 18 while socket 117 connects fork 119 to insulated conductor 99 which runs up the centre of arm 18.
Fig. 9, 10 and 11 illustrate how the sphere 28 may be constructed to act as a switch. The exterior of sphere 28 forms two conductive hemispheres 1~0, 142 (Fig.
20727~3 9) separated by a non-conductive annulus 144. Brushes 143, 145 provide electrical energy to the two hemispheres which in turn are electrically connected to conductor 122 and arm 24. By twisting sphere 28, by means of the lamp arms, until the brushes rest on non-conductive strip 144, the power to the fixture is cut off. It is turned on again by twisting the sphere 28 until the brushes contact the conductive hemispheres. In this embodiment, joint 22 will be rigid to permit the sphere to be turned by swinging the lamp fix-ture.
As will be apparent to those skilled in the art in the light of the foregoing disclosure, many alterations and modifications are possible in the practice of this invention without departing from the spirit or scope thereof. Accordingly, the scope of the invention is to be construed in accordance with the substance defined by the following claims.
Claims (6)
1. An adjustable lamp comprising:
a) a first arm having first and second ends and a first counterweight secured to said first end thereof;
b) a second arm, pivotally mounted adjacent said second end of said first arm, and having first and second ends and a second counterweight secured to said first end thereof;
c) an electric light fixture pivotally mounted adjacent said second end of said second arm;
d) electrical conduction meas for providing electrical energy to said light fixture from an electrical outlet;
e) a sphere secured on said first arm so that said first arm extends diametrically through said sphere; and f) means for rotatably supporting said sphere, comprising a surface provided with a circular aperture having a diameter less than that of said sphere;
wherein the weight of said first and second counterweights, the position of said sphere on said first arm and the position of said pivotal mounting of said second arm on said first arm are selected so that the weight of said light fixture is balanced by said counterweights in all orientations of said lamp.
a) a first arm having first and second ends and a first counterweight secured to said first end thereof;
b) a second arm, pivotally mounted adjacent said second end of said first arm, and having first and second ends and a second counterweight secured to said first end thereof;
c) an electric light fixture pivotally mounted adjacent said second end of said second arm;
d) electrical conduction meas for providing electrical energy to said light fixture from an electrical outlet;
e) a sphere secured on said first arm so that said first arm extends diametrically through said sphere; and f) means for rotatably supporting said sphere, comprising a surface provided with a circular aperture having a diameter less than that of said sphere;
wherein the weight of said first and second counterweights, the position of said sphere on said first arm and the position of said pivotal mounting of said second arm on said first arm are selected so that the weight of said light fixture is balanced by said counterweights in all orientations of said lamp.
2. The adjustable lamp of claim 1 wherein said pivotal mounting of said second arm on said first arm is a univer-sal joint.
3. The adjustable lamp of claim 1 wherein said pivotal mounting of said light fixture on said second arm is a universal joint.
4. The adjustable lamp of claim 1 wherein said means for electrical connection comprise said first and second arms.
5. The adjustable lamp of claim 1 further comprising electrical switching means.
6. The adjustable lamp of claim 5 wherein said switching means comprises said sphere having conductive, mutually insulated hemispheres and an insulated annulus, and said supporting means comprises electrically conductive brushes, said switching being accomplished by alternately placing said brushes in contact with said conductive hemisheres or said insulated annulus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2072783 CA2072783A1 (en) | 1992-06-30 | 1992-06-30 | Adjustable lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2072783 CA2072783A1 (en) | 1992-06-30 | 1992-06-30 | Adjustable lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2072783A1 true CA2072783A1 (en) | 1993-12-31 |
Family
ID=4150090
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2072783 Abandoned CA2072783A1 (en) | 1992-06-30 | 1992-06-30 | Adjustable lamp |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2072783A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016138711A1 (en) * | 2015-03-03 | 2016-09-09 | 京东方科技集团股份有限公司 | Table lamp |
-
1992
- 1992-06-30 CA CA 2072783 patent/CA2072783A1/en not_active Abandoned
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016138711A1 (en) * | 2015-03-03 | 2016-09-09 | 京东方科技集团股份有限公司 | Table lamp |
| US9822958B2 (en) | 2015-03-03 | 2017-11-21 | Boe Technology Group Co., Ltd. | Table lamp |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Dead |