Method of manufacturing a tubular lamp envelope

Details Method of manufacturing a tubular lamp envelope Method of manufacturing a tubular lamp envelope

1974-11-21

1976-05-25

Kellogg, Arthur D.

Glass manufacturing

Processes

Reshaping or surface deformation of glass preform

65281, 294 64R, C03B 2306, C03B 2308

Patent

active

039589714

ABSTRACT:
The invention relates to a method of manufacturing a torus-shaped lamp envalope in which a straight tube is softened by heating and is then bent in a vertical plane around a bending mould and is again cooled after which the cooperation of the still slightly soft tube with the bending mould is interrupted as soon as the tube is supported by a supporting member.
The invention further relates to a fluorescent lamp having a lamp envelope thus shaped, as well as a device for carrying out the method.

REFERENCES:
patent: 2494871 (1950-01-01), Greiner
patent: 2494923 (1950-01-01), Yoder et al.
patent: 3302803 (1967-01-01), Mooney

Affiliated with

Also associated with

Rating

Method of manufacturing a tubular lamp envelope 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 manufacturing a tubular lamp envelope, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of manufacturing a tubular lamp envelope will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-901997