EP 0436528 B1 19930224 - ELECTRIC SURFACE-POLISHING DEVICE
Title (en)
ELECTRIC SURFACE-POLISHING DEVICE
Publication
Application
Priority
DE 8800626 W 19881010
Abstract (en)
[origin: WO9004053A1] An electric surface-polishing device has a housing (60) closed on all sides, except the side that faces the surface to be electrically polished. The housing (60) can be moved by a guiding device (4, 12, 14, 28) along the surface (48) to be electrically polished. A seal (62) is arranged between the edge of the housing and the surface to be electrically polished. An electrode (56) is held in the housing and accessory devices (41, 42) for supplying current and fluid electrolyte are connected to the housing. In order to remove as much as possible of the electrolyte residues from the electrically polished surfaces, the housing (60) is arranged with the electrode (56) inside an outer housing (34) closed on all sides, except on the side that faces the surface to be polished. The outer housing has a seal (50) arranged on its edge and is provided with connections (86, 88) for delivering and removing a rinsing fluid, as well as with passages for delivering and removing the fluid electrolyte to and from the inner housing (60). The electrolyte residues remaining on parts of the electrically polished surfaces are thus rinsed away immediately behind the inner housing. The invention is particularly useful for electrically polishing the inner walls of containers, pipes and other parts of installations in the chemical and nuclear industries.
IPC 1-7
IPC 8 full level
CPC (source: EP)
C25F 7/00 (2013.01); G21F 9/004 (2013.01)
Citation (examination)
- US 3370175 A 19680220 - JORDON ALBERT L, et al
- DE 2841896 A1 19790329 - BECKMAN INSTRUMENTS INC
- US 4581335 A 19860408 - BALDWIN THOMAS O [US]
- WO 8800617 A1 19880128 - BOYCE THOMPSON INST PLANT RES [US], et al
- Dialog information services, File 55, BIOSIS, BIOSIS number 84024973, Leemans R et al: "A broad-host-range expression vector based on the p1 promoter of coliphage lambda regulated synthesis of human interleukin 2 in erwini and serratia species", J Bacteriol 169 (5), 1987, 1899-1904
- Diog Information Services, File 55, BIOSIS, BIOSIS number 81081249, Lastick S M et al: "Overproduction of escherichia.coli xylose isomerase", Biotechnol Lett 8 (1), 1986, 1-6
Designated contracting state (EPC)
BE DE SE
DOCDB simple family (publication)
WO 9004053 A1 19900419; DE 3878697 D1 19930401; EP 0436528 A1 19910717; EP 0436528 B1 19930224
DOCDB simple family (application)
DE 8800626 W 19881010; DE 3878697 T 19881010; EP 88908666 A 19881010