Method of making discharge lamp having blow-molded arc tube ends

Metal working – Barrier layer or semiconductor device making – Barrier layer device making

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

65110, 316 17, H01J 900

Patent

active

039395383

ABSTRACT:
In arc discharge lamps containing a mixture of metals and halogen, and especially where an unvaporized excess of one metal is present, lamp color is very sensitive to end chamber shape. Color uniformity in production lamps using quartz arc tubes varying appreciably in diameter and wall thickness is greatly improved by molding end chambers of constant size and shape in the ends. The chamber may be formed at the time the end is pinched and the electrodes sealed in by using pinching jaws having a mold defining portion and momentarily pressurizing the arc tube to expand the heated and still plastic end into the mold. In production all lamps will have their ends expanded or belled to some extent, more in lamps close to the minimum diameter limit and less in lamps close to the maximum diameter limit.

REFERENCES:
patent: 760789 (1904-05-01), Hewitt
patent: 2235515 (1941-03-01), Carpenter
patent: 2844919 (1958-07-01), Power
patent: 2857712 (1958-10-01), Yoder et al.
patent: 2965698 (1960-12-01), Gottschalk
patent: 3290134 (1966-12-01), Camarata
patent: 3324332 (1967-06-01), Waymouth et al.
patent: 3593056 (1971-07-01), Degawa et al.
patent: 3665235 (1972-05-01), Hugot

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Method of making discharge lamp having blow-molded arc tube ends does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method of making discharge lamp having blow-molded arc tube ends, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of making discharge lamp having blow-molded arc tube ends will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-2073098

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.