Telescoping-rotating (370) lamp base
AssigneePhilips Electronics North America Corporation
InventorsHarish F. Gandhi, Robert E. Cassidy
Life of this patent
Estimating the term…
Abstract
A rotating-telescoping base structure for lamps or light bulbs is described. The structure may be rotated up to 320.degree. and may be telescoped outwardly from the base structure. This enables use in applications where a longer neck dimension is needed or alignment of the fixture without unscrewing it from a socket is to be carried out.
Claims4
A rotatable and telescoping lamp having a light emitting portion comprising a screw-type base and a shell-type structure enclosing the light emitting portion of the lamp, said shell-type structure being mounted to said screw-type base such that said shell-type structure can rotate up to 370.degree. relative to said screw-type base, said shell-type structure including means to allow the shell-type structure to be telescoped outwardly from said screw-type base when said shell-type structure is in a predetermined position relative to the screw-type base.
A lamp having a light emitting portion comprising a threaded screw-type base and a shell-type structure enclosing the light emitting portion, said shell-type structure being rotatable through 370.degree. with respect to said screw-type base after said screw-type base is tightly screwed into a fixture, said lamp being suitable for single, two-way or three-way lamp operation, wherein said shell-type structure includes an insulator structure with a cylindrical hollow tongue, and wherein said screw-type base includes a split collar member having an inner sleeve member having a cylindrical opening in which said tongue moves outwardly and inwardly therein to allow said shell-type structure to telescope from said screw-type base when said shell-type structure is in a predetermined position relative to the screw-type base.
A lamp having a light emitting portion comprising a threaded screw-type base and a shell-type structure enclosing the light emitting portion, said shell-type structure being rotatable through 370.degree. with respect to said screw-type base after said screw-type base is tightly screwed into a fixture, wherein said shell-type structure includes an insulator structure with a cylindrical hollow tongue, and wherein said screw-type base includes a split-collar member having an inner sleeve member and further having a cylindrical opening in which said tongue moves outwardly and inwardly therein to allow said shell-type structure to telescope from said screw-type base when said shell-type structure is in a predetermined position relative to the screw-type base.
Dependencies are inferred from the claim text.