Manufacturing methods of double-spiral arc tubes

Details Manufacturing methods of double-spiral arc tubes Manufacturing methods of double-spiral arc tubes

2008-07-22

2008-07-22

Griffin, Steven P. (Department: 1791)

Glass manufacturing

Processes

Reshaping or surface deformation of glass preform

C065S108000, C065S110000, C065S292000, C313S634000

Reexamination Certificate

active

10813890

ABSTRACT:
The manufacturing method comprises: a softening step of softening a straight glass tube in a heating furnace; a moving and placing step of moving the softened glass tube so that the glass tube is placed on the top of the mandrel; and a winding step of winding the glass tube placed on the top of the mandrel around the periphery of the mandrel. The mandrel is disposed beneath the glass tube starting to get soft, and the glass tube being soft is perpendicularly lowered in order to be placed on the top of the mandrel. In the winding step, the winding speed Vr at which the glass tube is wound around the mandrel is higher than the moving speed Vs at which chuck units holding the ends of the glass tube move toward the mandrel.

REFERENCES:
patent: 2491857 (1949-12-01), Greiner
patent: 99120969.9 (1999-11-01), None
patent: 19855240 (2000-05-01), None
patent: 08-339780 (1996-12-01), None
“Gear Ratio”, (http://en.wikipedia.org/wiki/Gear—ratio), Accessed Dec. 20, 2006—Cited to show the well established principles of gear ratios and rate of rotation.
English Language Translation of DE 198 55 240 A1 to Holzer et. al. , “Method for production of spiral glass coils for incandescent lamps with axis-parallel ends”, Published May 31, 2000, pp. 1-8.

Affiliated with

Also associated with

Rating

Manufacturing methods of double-spiral arc tubes does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Manufacturing methods of double-spiral arc tubes, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Manufacturing methods of double-spiral arc tubes will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3933429