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公开(公告)号：EP1226002A2
公开(公告)日：2002-07-31
申请号：EP00952084.2
申请日：2000-08-09
发明人： EILERTSEN, Bj rn
IPC分类号： B23P15/14
CPC分类号： F16H55/17
摘要： A method for strengthening a gear wheel (1) is described. Each tooth (2) is fixed like a theoretical beam between two extreme points in that two strengthening wheels (3, 4), shaped on their respective insides in accordance with the gear wheel teeth (2), are placed around the gear wheel. To achieve a best possible shrink fit, the toothed rim of the gear wheel (1) is envisaged stretched out to a corresponding larger circle, shrink fits being selected for this circle. Similar considerations are made for the ring.
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公开(公告)号：EP1119685A1
公开(公告)日：2001-08-01
申请号：EP99943519.1
申请日：1999-09-22
发明人： EILERTSEN, Bj rn
IPC分类号： E21B19/083 , E21B19/09 , E21B15/00
CPC分类号： E21B19/006
摘要： To maintain a riser under tension, the riser can be connected to a gripper means (5, 12) which is connected to vertical toothed racks (4) that are in constant engagement with gear wheels (22) which are driven with constant torque, preferably by hydraulic motors (9) at constant pressure. An apparatus is also described for putting the riser under tension. The apparatus includes vertical guides (7) in a derrick, toothed racks (4) in the vertical guides (7), a gripper means (5, 12) designed for interaction with a riser connected to the racks (4), and drive units (9) arranged in the derrick for drive-actuation of the racks (4) in the vertical guides (7).
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公开(公告)号：EP1232340A1
公开(公告)日：2002-08-21
申请号：EP00973268.6
申请日：2000-10-17
发明人： EILERTSEN, Bj rn
CPC分类号： F04B9/02
摘要： One and the same drive gear (6) is associated with two adjacent pump cylinders (3, 4). Each pump cylinder has a separate valve unit (1, 2). The two pump cylinders (3, 4) have a common piston rod (15) having a pump piston (16, 17) at each end. The piston rod is made in the form of a toothed rack (15), the drive gear (5) comprising motor-driven gearwheels (11-14) in engaging interaction with the toothed rack (15).
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