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US 5,510,967 AGranted
Hid headlamp assembly
AssigneeOsram Sylvania Inc.
InventorsCharles M. Coushaine, Peter H. Corsini, John L. Tremblay
Life of this patent
Estimating the term…
Abstract
An arc discharge lamp having the ability to be easily focused is disclosed. The lamp includes a split ball assembly mounted about one end of an arc discharge tube which can be held in place by concave portions provided in a base and a locking nut. The split ball assembly also includes a rotation limiting portion to provide the ramp with a limited degree of movement in two axes. Additionally, the split ball assembly allows the lamp to be moved in a third axis. The resulting movement of the lamp allows it to be properly focused with any reflector.
Claims17
A lamp assembly comprising:
- a) a light source with a tubular end;
- b) a threaded nut having an axis, an exterior thread region, an internal surface defining a passage, and a concave surface extending around the axis at an end of the passage, defining a section of a sphere, the threaded nut being positioned around the tubular end of the light source;
- c) a split ball assembly comprising first and second half balls each having similar exterior surfaces defining sections of a sphere, conformal with the spherical section of the threaded nut, the first and second half balls each having similar internal surfaces defining a surface conformal with the tubular end of the light source, the first and second half balls being positioned around the tubular end of the light source adjacent to the concave section of the nut;
- d) a base having an axis and an aperture defining a thread section extending around the axis and a section of a sphere conformal with the split ball assembly;
- and
- electrical connections for the light source;
- wherein the threaded nut is threaded to the base to engage the split ball assembly and trap the light source in place with respect to the base.
4 more elements
Dependencies are inferred from the claim text.