|Publication number||US2740216 A|
|Publication date||Apr 3, 1956|
|Filing date||Jul 21, 1953|
|Priority date||Jul 21, 1953|
|Publication number||US 2740216 A, US 2740216A, US-A-2740216, US2740216 A, US2740216A|
|Original Assignee||Sol Lieberman|
|Export Citation||BiBTeX, EndNote, RefMan|
|Patent Citations (6), Referenced by (13), Classifications (16)|
|External Links: USPTO, USPTO Assignment, Espacenet|
April 3, 1956 s. LIEBERMAN 2,740,216
FLUORESCENT LAMP SHADE Filed July 2;, 1953 INVENTOR 60L LIEBERMAN United States Patent FLUORESCENT LAMP SHADE Sol Lieberman, Brooklyn, N. Y.
' Application July 21, 1953, Serial No. 369,486
2 Claims. (Cl. 40-131) This invention relates to new and improved lampshades for fluorescent and other tubular lamps.
More particularly, the present invention proposes the construction of an improved lampshade for fluorescent and other tubular lamps which can quickly, easily and securely be fastened over a lamp to shade it and diffuse the lamplight.
Another object of the present invention proposes forming the lampshade with a laterally curved body of translucent light diffusing plastic with spaced lamp gripping web cross members each having a lamp receiving recess and notched portions adjacent thereto so that the lampshade can be pressed on and pulled from a tubular lamp.
Still further, the present invention proposes arranging the lampshade so that it can be made up of a number of difierent units or body portions each of which can be conveniently fastened to another in end to end relation and held in such position by gravity locking means.
As a further object, the present invention proposes constructing the lampshade with means removably to hold translucent indicia units for display or advertising purposes.
For further comprehension of the invention, and of the objects and advantages thereof, reference will be had to the following description and accompanying drawings, and to the appended claims in which the various novel features of the invention are more particularly set forth.
On the accompanying drawings forming a material part of this disclosure:
Fig. l is a perspective view of a fluorescent tubular lamp covered by a lampshade constructed and arranged in accordance with the present invention.
Fig. 2 is a sectional view taken on line 22 of Fig. 1.
Fig. 3 is a perspective view of another lampshade illustrating a modification of the present invention.
Fig. 4 is an end view of the structure shown in Fig. 3.
Fig. 5 is a top plan view of Fig. 3.
Fig. 6 is a fragmentary detail view illustrating the gravity locking means indicated in Figs. 3 and 4.
Fig. 7 is a view similar to Fig. 6 but showing the parts engaged.
Fig. 8 is a top plan view of a lampshade similar to that shown in Figs. 1 and 2 but illustrating another modification.
Fig. 9 is a fragmentary perspective view similar to Fig. 3 but illustrating a still further modification of the present invention.
The lampshade, in accordance with the first form of the invention illustrated in Figs. 1 and 2 preferably is made of translucent light, diffusing thermoplastic but may be made of similar glass or other material having such properties.
The lampshade has a body portion 15 which is laterally curved so as to be generally arcuate in cross section. Body portion 15 is held to fluorescent tubular lamp 16 by spaced resilient tube gripping web members 17 of the same material as the body portion and preferably molded integral therewith. The members 17 extend across the body portion (see Fig. 2). Each member 17 is constructed the same having a central tube receiving opening or recess 18 and two spaced notches 19 and 20. Notch 19 is on one side of the recess 18 and notch 20 is disposed on the other side of the recess 18. The notches permit a web member 17 to be resilient enough to let its central opening or recess 18 be pushed over the tubular lamp 16 and for the web member firmly to grip the lamp once-this occurs.
The clip-on gripping web 17 will keep the lamp shade body in self centered position, however the notches 19 and 20 also permit the easy removal of the lampshade from the lamp when this is necessary.
The modification of the invention illustrated in Figs.
3 to 7, inclusive, is characterized by the provision of a shorter body section or portion 21 made of translucent light diffusing material and laterally curved in a substantially U-shaped cross section. web members 22 and 23 made of the same material as the body portion are spaced at the ends of the body portion to be end sections thereof. Members 22 and 23 extend across the body portion 21 and each has a central tube recess or opening 24 with notches 25 and 26 on either side of the recess. End section 22 has gravity locking members 27 on its outer face 28 removably to connect body portion 21 with a similar body portion 29 (see Figs. 6 and.7) having an end section 30 with openings 31 therein removably to receive the locking members 27. The locking members 27 are each in the form of a hook with an outwardly extending portion 32 and a downwardly extending portion 33. Opening 31 is large enough to pass the downwardly extending portion 33 and the hook fits over the lower edge of opening 31 held there by gravity as well as by frictional contact.
End section 23 of the body portion 21 has an opening 34 like opening 31 removable to receive the hook of another body portion. In this manner a number of body portions may be connected end to end to make up a lampshade.
The modification of the present invention illustrated in Fig. 8 is characterized by the provision of a body portion 35 having a bottom with spaced integral raised and crossed bars 36 and 37 inside the body and criss-crossed further to diffuse lamplight.
The modification of the invention shown in Fig. 9 is characterized by the provision of a body portion 38 having inside thereof inwardly projecting prongs 39 removable to hold translucent indicia 40 in the body portion. In this manner, the lampshade may be used for display or advertising purposes.
While I have illustrated and described the preferred embodiments of my invention, it is to be understood that I do not limit myself to the precise construction herein disclosed and the right is reserved to all changes and modifications coming within the scope of the invention as defined in the appended claims.
Having thus described my invention, what I claim as new, and desired to secure by United States Letters Patent is:
1. A light diffusing lampshade for fluorescent and other tubular lamps comprising a laterally curved body portion of translucent light diffusing material, spaced internal resilient tube gripping web members integral with and inside the body portion and extending across it, each of said members having an upper edge flush with the top of the body portion with a centrally disposed tube receiving recess and a V-shaped notch on either side of the recess for forcing the tube receiving recess on and Resilient tube gripping annals oil a tubular lamp, and prongs on the body portion to secure translucent indicia thereto.
2. A light diffusing lampshade for fluorescent and other tubular lamps comprising a laterally curved body portion of translucent light diffusing material, a second similarly shaped body portion of the same material, internal resilient tube gripping Web members of the same material in said body portions, each of said body portions having one of said members as an end section, each said end section having a gravity locking member on an outer face thereof removable to connect the body portions end to end to form a continuous lampshade, one of said gravity locking members on one end section of one body portion being an outwardly and a downwardly projecting hook and one of said gravity locking members on one 4, end of the other body portion being an opening removable to receive and pass the outwardly and downwardly projecting hook for the hook to engage the lower edge of said opening, and prongs on the body portion to secure translucent indicia thereto.
References Cited in the file of this patent UNITED STATES PATENTS D. 99,991 Bristol June 16, 1936 2,078,370 Corbett Apr. 27, 1937 2,259,152 Claspy Oct. 14, 1941 2,277,433 Guth Mar. 24, 1942 2,551,710 Slaughter May 8, 1951 2,583,939 French Jan. 29, 1952
|Cited Patent||Filing date||Publication date||Applicant||Title|
|US2078370 *||Apr 29, 1936||Apr 27, 1937||Nat Electric Prod Corp||Reflector assembly|
|US2259152 *||Aug 28, 1940||Oct 14, 1941||Phoenix Glass Company||Lighting fixture|
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|US2583939 *||Aug 28, 1948||Jan 29, 1952||Plasti Cation Corp||Light-diffusing shield for elongated tubular lamps|
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|Citing Patent||Filing date||Publication date||Applicant||Title|
|US2928198 *||Jul 29, 1957||Mar 15, 1960||Sydney Madanick||Illuminated sign|
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|US7837361 *||Nov 17, 2006||Nov 23, 2010||Ledalite Architectural Products||Light control devices implemented with diffusers having controllable diffusion characteristics|
|US8047673||Apr 9, 2008||Nov 1, 2011||Philips Electronics Ltd||Light control device exhibiting batwing luminous intensity distributions in upper and lower hemispheres|
|US20060050506 *||Sep 6, 2005||Mar 9, 2006||Ngai Peter Y||Light diffuser element with brightness distribution control|
|US20070268585 *||Nov 17, 2006||Nov 22, 2007||Scott Santoro||Light control devices implemented with diffusers having controllable diffusion characteristics|
|US20080205050 *||Jan 28, 2008||Aug 28, 2008||Terrick Moyer||Lighting apparatus|
|US20080285267 *||Apr 9, 2008||Nov 20, 2008||Ledalite Architectural Products, Inc.||Light control device exhibiting batwing luminous intensity distributions in upper and lower hemispheres|
|WO2004055431A1 *||Dec 16, 2002||Jul 1, 2004||Asian Electronics||A method of connecting reflectors and louvers to fluorescent lamps|
|U.S. Classification||40/558, 362/355|
|International Classification||F21V17/00, F21V11/02, F21V13/00, F21V17/04, F21V1/14, F21V1/00, F21V13/02, F21V11/00|
|Cooperative Classification||F21V11/02, F21V17/04, F21V1/14, F21V13/02|
|European Classification||F21V13/02, F21V17/04|