Cavity jacket for plunger piston
US6131502A · kind A · utility
0Cited by
4References
1Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 25, 1998 |
| Grant date | Oct 17, 2000 |
| Priority date | — |
| Expiry date | Nov 25, 2018 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC03B9/1938
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A device for inhibiting glass from falling into an annular cavity formed between a plunger piston and an inner piston telescopically journalled within a longitudinal cavity within the plunger piston includes a rigid sleeve mountable to the plunger piston, adjacent walls of the longitudinal cavity, so as to substantially fill the annular cavity. The sleeve is mountable into snug sliding relation with the inner piston.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.