Overflow downdraw glass forming method and apparatus

Details Overflow downdraw glass forming method and apparatus Overflow downdraw glass forming method and apparatus

2005-07-19

2011-10-25

Lazorcik, Jason L. (Department: 1741)

Glass manufacturing

Means drawing sheet from bath

Means dividing and recombining melt in draw chamber

C065S053000, C065S090000, C065S121000

Reexamination Certificate

active

08042361

ABSTRACT:
The present invention significantly modifies “The Overflow Process”. It includes a method and apparatus for measuring glass flow rate and maintaining a constant glass flow rate. It also embodies design features and methods that support and stress the forming apparatus in a manner such that the deformation that results from thermal creep is corrected, thus minimizing the effect of the thermal creep on the thickness variation of the glass sheet. The present invention also embodies design features that change the process from a single step (combined flow distribution and cooling) to a two step process; step one being flow distribution and step two being cooling.

REFERENCES:
patent: 1565319 (1925-12-01), Fowle
patent: 1759229 (1928-02-01), Drake
patent: 1673907 (1928-06-01), Ferngren
patent: 1697227 (1929-01-01), Danner
patent: 1731260 (1929-10-01), Nobbe
patent: 1829639 (1931-10-01), Ferngren
patent: 1829641 (1931-10-01), Ferngren
patent: 1841579 (1932-01-01), Fraser
patent: 1891370 (1932-12-01), Danner
patent: 3149949 (1964-09-01), Dockerty et al.
patent: 3338696 (1967-08-01), Dockerty
patent: 3433613 (1969-03-01), Dockerty
patent: 3437470 (1969-04-01), Overman
patent: 3451798 (1969-06-01), Simon
patent: 3506429 (1970-04-01), Overman
patent: 3519411 (1970-07-01), Cortright et al.
patent: 3589887 (1971-06-01), Ward
patent: 3607182 (1971-09-01), Leibowitz
patent: 3682609 (1972-08-01), Dockerty
patent: 3723082 (1973-03-01), Knowles et al.
patent: 4214886 (1980-07-01), Shay et al.
patent: 4389725 (1983-06-01), Barkhau et al.
patent: 4416678 (1983-11-01), Bottger
patent: 4738706 (1988-04-01), Picinelli
patent: 5374595 (1994-12-01), Dumbaugh, Jr. et al.
patent: 6319867 (2001-11-01), Chacon et al.
patent: 6748765 (2004-06-01), Pitbladdo
patent: 6889526 (2005-05-01), Pitbladdo
patent: 6895782 (2005-05-01), Pitbladdo
patent: 6974786 (2005-12-01), Helfinstine et al.
patent: 6990834 (2006-01-01), Pitbladdo
patent: 6997017 (2006-02-01), Pitbladdo
patent: 7155935 (2007-01-01), Pitbladdo
patent: 2003/0029199 (2003-02-01), Pitbladdo
patent: 2003/0110804 (2003-06-01), Fenn et al.
patent: 2003/0192349 (2003-10-01), Meda et al.
patent: 2005/0183455 (2005-08-01), Pitbladdo
patent: 718111 (1968-12-01), None
patent: 1596484 (1967-07-01), None
patent: 1596402 (1967-12-01), None
patent: 1596403 (1967-12-01), None
patent: 21 58 253 (1971-11-01), None
patent: 3113505 (1983-01-01), None
patent: 31 11484 (1983-02-01), None
patent: 33 16795 (1983-11-01), None
patent: 31 11484 (1983-12-01), None
patent: 33 14540 (1983-12-01), None
patent: 3329843 (1984-05-01), None
patent: 3507852 (1985-08-01), None
patent: 3518137 (1986-01-01), None
patent: 43 36 046 (1993-10-01), None
patent: 43 26 143 (1993-12-01), None
patent: 196 44 673 (1998-04-01), None
patent: 198 09 878 (1999-09-01), None
patent: 198 40 113 (2000-03-01), None
patent: 19964043 (2001-07-01), None
patent: 100 21 013 (2001-11-01), None
patent: 100 28 741 (2001-12-01), None
patent: 1549081 (1967-12-01), None
patent: 1549915 (1968-01-01), None
patent: 982153 (1965-02-01), None
patent: 1200401 (1970-07-01), None
patent: 1354006 (1974-06-01), None
patent: 09110443 (1997-04-01), None
patent: 10291827 (1998-11-01), None
patent: 11-246230 (1999-09-01), None
patent: 2001-80922 (1999-09-01), None
patent: 11246230 (1999-09-01), None
Aoki, Shigeaki—Machine Language Translation of Japanese Patent Publication (JP 11-246230)—PAJ website Jan. 19, 2009.
Varshneya, Arun, “Fundamentals of Inorganic Glasses”, Academic Press, Inc., 1994, pp. 534-540.
Snyder, R.D./Byars, E.F., “Engineering Mechanics”, McGraw-Hill Book Company, 1973, pp. 349-350.
Kingery, W.D.; Bowen, H.K.; Uhlmann, D.R., “Introduction to Ceramics”, John Wiley & Sons, 1976, pp. 705-767.
Bottger, et al.; “LCD substrate—the future process” International Glass Review, Issue 2—2000; 3 pages.
Bocko, Peter L. and Mitchell, Mark H. “AMLCD Glass Substrates—Foundation for High-Tech Displays” The GlassReseacher, vol. 12, No. 1, pp. 26-29, 2002.

Affiliated with

Also associated with

Rating

Overflow downdraw glass forming method and apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Overflow downdraw glass forming method and apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Overflow downdraw glass forming method and apparatus will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4296281