EP 0971811 B1 20020911 - METERING DEVICE FOR CRYOGENIC PELLETS
Title (en)
METERING DEVICE FOR CRYOGENIC PELLETS
Title (de)
DOSIERVORRICHTUNG FÜR KRYOGENE PELLETS
Title (fr)
DISPOSITIF DE DOSAGE POUR COMPRIMES CRYOGENES
Publication
Application
Priority
- NL 9800613 W 19981023
- NL 1007421 A 19971103
Abstract (en)
[origin: WO9922909A1] The invention concerns a metering device (1) for cryogenic pellets which are used in a blast cleaning apparatus to treat surfaces. The cryogenic pellets are by example bars of compressed dry ice (carbon dioxide). The metering device (1) is characterised by the use of sliding surfaces which are treated with a layer of nickel which contains ceramic material or sapphire powder. The metering device (1) has a metering disk (4) with openings (5) which while turning pass the intake opening (2) and thereafter pass the exhaust (3) opening where the pellets are transported to the mixing unit (25). The metering disk (4) is confined between plates (7, 8) where inbetween an elastic seal (15-17) is placed. The plates (7, 8) are pressed against the metering disk (4) with sets of springs. The metering device (1) has no ventilation openings for the openings (5) in the disk (4) and the space around the disk is not ventilated. The metering disk (4) has only one axis (6) with a bearing (10).
IPC 1-7
IPC 8 full level
CPC (source: EP)
B24C 1/003 (2013.01); B24C 7/0092 (2013.01)
Designated contracting state (EPC)
AT BE CH DE ES FR GB LI NL SE
DOCDB simple family (publication)
WO 9922909 A1 19990514; AT E223787 T1 20020915; AU 1056199 A 19990524; DE 69807855 D1 20021017; EP 0971811 A1 20000119; EP 0971811 B1 20020911; NL 1007421 C2 19990504
DOCDB simple family (application)
NL 9800613 W 19981023; AT 98953103 T 19981023; AU 1056199 A 19981023; DE 69807855 T 19981023; EP 98953103 A 19981023; NL 1007421 A 19971103