Method of encasing a non-linear atubular member

Details Method of encasing a non-linear atubular member Method of encasing a non-linear atubular member

1991-12-30

1992-08-04

Rowan, Kurt

Electric lamp or space discharge component or device manufacturi

Process

With assembly or disassembly

445 58, 264 17, 264221, 427 67, 427226, H01J 900, B05D 506, B29C 3340

Patent

active

051354195

ABSTRACT:
A method of encasing a luminous translucent tubing (12,32) of a non-linear complex geometrical configuration in a transparent outer member (14,34) and forming a passage (25,35) of annular radial cross section therebetween, which method comprises coating the exterior of the tubing (12,32) with a viscous temporary material (17,47) which solidifies to provide a coating with smooth exterior surface, coating the temporary substance (17,47) with a permanent forming material in a viscous liquid state which hardens to form a rigid transparent outer member (14,34) in coextensive surrounding relation to the tubing (12,32) and its coating of temporary material (17,47), applying heat to said coating of temporary material at a temperature above the melting point of the temporary material and below the softening temperature of the outer member, and removing the temporary material from between the translucent tubing (12,32) and the transparent outer member (14,34) while supporting the translucent tubing in fixed relation to the outer member to provide a passage (25,35) defined by the annular space between the translucent tubing and the transparent outer member.

REFERENCES:
patent: 1737092 (1929-11-01), Pearson et al.
patent: 2029183 (1936-01-01), Mukasa

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