Patent ID: 7452711
Filing Date: 2008-11-18
Classification: B01L,C12M

Abstract:
1. A contact plate comprising a base and a cover, adapted to be disposed on and enclose at least a portion of the base, each of the base and the cover having a cylindrical configuration, at least one locking means for releasably holding the cover and the base together, wherein the cover is rotated relative to the base to engage the locking means the locking means comprises at least one inter-engaging rib and groove arrangement, the inter-engaging rib and groove arrangement comprises a rib affixed to the outer surface area of the cover, and having at least one radially extending projection; and a groove member affixed to and extending upwardly from the outer surface area of the base and having a corresponding projection-receiving portion; wherein the groove is adapted to slideably receive the rib, so that the projection is positioned in the projection-receiving portion of the groove in the locked position.