Abstract: A method for forming single element arc tubes is provided. The method includes the use of the lost foam process in combination with ceramic forming processes. First, a polymeric material (20) is formed to define the internal dimensions. The outer dimensions are established with an external mold (40), followed by filling the mold with a suspension (60) that hardens. The outer mold is removed and the part is debindered to melt and remove the inner foam shape, followed by sintering to form a substantially transparent ceramic arc tube (70).

Abstract: A lamp is provided with a mounting arrangement for achieving a precise alignment. The lamp includes a double-ended light source, a metal strap clamping one end of the light source at two locations, and a plastic base having an internal opening wherein the metal strap is engaged. The metal strap includes two clamping members between which the light source is clamped and a cap member attached to the clamping members. The cap member has tabs adapted for engaging the internal opening of the plastic base and gimbaling the light source to align the light source with respect to the plastic base. The clamping members are joined together at a point between the to clamping locations such that a spring force clamps the light source. The clamping members are also oriented at an angle of about 45 degrees from vertical to better withstand both vertical and horizontal loads.

Abstract: A replaceable lamp assembly for automotive headlamps includes an incandescent lamp having a pinch seal mounted on a plastic base by means of a one piece sheet metal holder. One end of the holder clamps around the pinch seal of the lamp and the other end is secured to the plastic base via a pair of leg portions each having a spherical gimballed end RF welded to the base.

Abstract: A mount for a minature lamp terminating at one end in an elongated tubular member, said mount comprising a base and a cap assembled in mating engagement and exerting a compressive force on at least one deformable, elastomeric tubular or ring shaped member in said mount which surrounds and contacts said tubular lamp member of which at least a portion of which is inserted in a bore in the mount, thereby holding the lamp in the mount.