Electric lamp and discharge devices – With luminescent solid or liquid material – With gaseous discharge medium
Patent
1994-11-28
1996-07-16
Patel, Nimeshkumar D.
Electric lamp and discharge devices
With luminescent solid or liquid material
With gaseous discharge medium
313493, 313634, 313 25, 362223, 362260, 362377, H01J 6130, H01J 6134
Patent
active
055369987
ABSTRACT:
A protective assembly for a standard fluorescent lamp includes a protective tube that is preformed from a semi-rigid, non-frangible polymeric transparent or translucent material that is stabilized against ultraviolet radiation and is received over the glass tube with its inner surface substantially uniformly spaced apart from the outer surface of the glass tube to form an air space for insulation of the lamp. The desired uniform spacing between the lamp tube and the protective tube is established by a spacer ring located adjacent each end of the glass tube and adhesively bonded to the glass tube. Each spacer ring is formed of band of a semi-rigid polymeric foam strip material that is resistant to heat and ultraviolet radiation. The foam spacer ring forms a snug fit with an inner surface of the protective tube but allows the protective tube to be slid lengthwise onto the lamp. The protective tube is securely joined to the lamp by a shrink-fitted collar at each end of the lamp that overlaps and is adhesively joined to the protective tube and the lamp terminal cap.
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"Standard Specification for Flexible Cellular Materials-Sponge or Expended Rubber", ASTM Designation: D1056-91, Mar. 1992.
Patel Nimeshkumar D.
Royal Lite Manufacturing and Supply Corp.
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