EP 0299692 A2 19890118 - Gemstone polishing apparatus.
Title (en)
Gemstone polishing apparatus.
Title (de)
Edelstein-Poliervorrichtung.
Title (fr)
Dispositif de polissage de pierre précieuse.
Publication
Application
Priority
GB 8716512 A 19870714
Abstract (en)
In order to centre the residual imbalance of a scaife (5), the scaife (5) is carried on an air bearing (6) which is axially stiff but allows radial float, and is driven by a motor (2) which is carried on silent blocks (3) which are axially stiff but allow radial float of the motor (2). The motor (2) is driven at a speed above the first radial critical frequency of the system formed by the motor (2), motor shaft (4) and scaife (5) and its mounting.
IPC 1-7
IPC 8 full level
B24B 9/16 (2006.01)
CPC (source: EP)
B24B 9/16 (2013.01)
Designated contracting state (EPC)
BE DE FR LU NL
DOCDB simple family (publication)
GB 2206825 A 19890118; GB 2206825 B 19911106; GB 8716512 D0 19870819; DE 3871002 D1 19920617; EP 0299692 A2 19890118; EP 0299692 A3 19891123; EP 0299692 B1 19920513; IE 60355 B1 19940629; IE 882141 L 19890114
DOCDB simple family (application)
GB 8716512 A 19870714; DE 3871002 T 19880708; EP 88306285 A 19880708; IE 214188 A 19880713