DE255572C - - Google Patents

Info

Publication number

DE255572C

DE255572C DENDAT255572D DE255572DA DE255572C DE 255572 C DE255572 C DE 255572C DE NDAT255572 D DENDAT255572 D DE NDAT255572D DE 255572D A DE255572D A DE 255572DA DE 255572 C DE255572 C DE 255572C

Authority

DE

Germany

Prior art keywords

extension tube

bell

clamping device

clamping

actuator

Prior art date

Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)

Active

Links

• Espacenet
• Global Dossier
• DPMA
• Discuss

• 238000000034 method Methods 0.000 claims description 6
• 238000004519 manufacturing process Methods 0.000 claims description 3
• 238000002844 melting Methods 0.000 claims description 3
• 230000008018 melting Effects 0.000 claims description 3
• 238000010438 heat treatment Methods 0.000 description 5
• 239000011521 glass Substances 0.000 description 4
• 238000010309 melting process Methods 0.000 description 2
• 230000004927 fusion Effects 0.000 description 1
• 230000005484 gravity Effects 0.000 description 1
• 238000007789 sealing Methods 0.000 description 1