Method of making a unitary tubular generally U-shaped discharge

Details Method of making a unitary tubular generally U-shaped discharge Method of making a unitary tubular generally U-shaped discharge

1988-08-30

1989-05-16

Kellogg, Arthur

Glass manufacturing

Processes

Fusion bonding of glass to a formed part

65108, 65110, 65276, 65281, C03B 2306

Patent

active

048306487

ABSTRACT:
To prevent weakened corners when forming a U-shaped discharge tube with sharp corners (28, 29) during a bending operation from a straight tube, two glass tubes (1, 3) having a wall dimension suitable for a compact fluorescent tube are fused to a central tubular glass element (2) of thicker wall dimension so that, upon bending into U-shape with sharp corners (28, 29), the thicker wall portion can stretch and form the essentially right-angle corners of requisite wall thickness. Preferably, during the heating steps for forming the glass, the initially straight glass portions (1, 2, 3) are rotated.

REFERENCES:
patent: 4288239 (1981-09-01), Hoeh
patent: 4319162 (1982-03-01), Hoeh
patent: 4422863 (1983-12-01), Hosoya et al.
patent: 4433994 (1984-02-01), Fujimura et al.
patent: 4481442 (1984-11-01), Albrecht et al.

Affiliated with

Also associated with

Rating

Method of making a unitary tubular generally U-shaped discharge 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 a unitary tubular generally U-shaped discharge , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of making a unitary tubular generally U-shaped discharge will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2319670