Patent ID: 6588315
Filing Date: 2003-07-08
Classification: E21B

Abstract:
A pressure medium actuated ram device comprising:a cylindrical housing (10) closed at a rearward end portion (22) by a closure part (12) which closure part is provided with a first externally threaded section (18) which is threaded into the rearward end portion of the cylindrical housing (10), the rearward end portion (22) of the cylindrical housing (10) having an internal thread threadably cooperable with the first externally threaded section (18) of the closure part (12), and a counter element (28) having a counter ring provided with an internal thread (33), the counter ring having a rearward externally threaded section (34) onto which a conical end shell (36) is threadably receivable, the closure part having a second threaded section (20) which stands in threaded engagement with the counter element (28), the rearward end portion (22) of the housing having a rearwardly facing annular surface (40) and the counter element (28) having a forwardly facing annular surface so that in an assembly of the cylindrical housing, the closure part and the counter element with one another, the closure part is in threaded connection with the cylindrical housing at a desired position selected from many possible positions relative to the housing, and the counter element is in threaded engagement with the closure member engaging said rearwardly facing and forwardly facing annular surfaces fixing the closure element in the desired position relative to the cylindrical housing.