C.a. Greiner & Sohne Gesellschaft M.b.h.

Manfred Lederer

Franz Konrad

Gunther Pakanecz

Gu/ Nther Pakanecz

A closure for a tube is a two piece stopper. The inner piece extends into the tube and the outer piece engages the exterior of the tube's sidewall. The outer piece has an inwardly extending shoulder which supports a projection of the inner piece. The two pieces are held together by a C-shaped washer that rests above the inner piece and in a channel formed in the outer piece.

Closure device for a cylindrical housing

In combination with a cylindrical housing, a closure cap including a transverse end wall and cylindrical shell defining a bore and open end. A sealing device arranged between the bore and open end has an outer cylindrical sealing surface mating with an inner cylindrical sealing surface on the housing. A coupling device is arranged between the closure cap and cylindrical housing and includes three spiral webs on the inner surface of the closure cap shell between a first and second transverse plane. The first plane is remote from the end wall and the second plane is close to the end wall, each web having respective ends in the first and second plane, the ends in the first plane being circumferentially spaced from the ends in the second plane by an angle of less than 120 degrees. Three guide lugs radially extend from the cylindrical housing for engagement with the webs, the guide lugs being circumferentially spaced from each other by an angle of about 120 degrees. The second place has a distance from the transverse end wall of the closure cap which exceeds the length of the guide lugs extending parallel to the longitudinal axis of the housing.

The open end of a cylindrical housing which may be an evacuable housing, for example a tube for storing blood samples, is closed by means of a cap having an annular wall surrounding the open end of the housing and a seal extending into the cap and the housing. For secure sealing of the housing, the cap is connected by means of a coupling device either to the seal or to the housing or both of these.

Growing community of inventors

Kremsmunster, Austria

Manfred Lederer