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51. 发明专利

FI833575A0 未知
公开(公告)号：FI833575A0
公开(公告)日：1983-10-03
申请号：FI833575
申请日：1983-10-03
申请人： SAUDER KARL
发明人： SAUDER KARL
IPC分类号： B21D39/04 , B21D
摘要： PCT No. PCT/EP83/00024 Sec. 371 Date Oct. 4, 1983 Sec. 102(e) Date Oct. 4, 1983 PCT Filed Feb. 1, 1983 PCT Pub. No. WO83/02737 PCT Pub. Date Aug. 18, 1983.An apparatus for pressing tubular parts, more particularly for pressing or forcing pipe-unions onto pipes, sleeves or hoses. The apparatus includes a plurality of spring loaded, radially adjustable jaws and an annular piston in operative communication with the jaws. The piston can move hydraulically towards the jaws and can be returned hydraulically to its neutral position. The effective area of the piston, by means of which it is returned to its neutral position, amounts to only a fraction of the piston-area which advances the piston. The end of the piston remote from the jaws engages in an annular hydraulic cylinder, the entire cross-section of the piston which is largest at this end, forming the effective piston-area which advances the piston.

52. 发明专利

IT8367116D0 未知
公开(公告)号：IT8367116D0
公开(公告)日：1983-02-03
申请号：IT6711683
申请日：1983-02-03
申请人： SAUDER KARL
发明人： SAUDER KARL
IPC分类号： F15B13/04 , F15B13/042 , F16K11/04 , F16K11/10 , F16K39/00 , F16K39/02 , F16K
摘要： A hydraulic control device consists of a housing, a control slide valve displaceable in a bore of the housing, and a control ring. Axial displacement of the control slide valve makes it possible to connect together or to disconnect various connecting lines depending upon the position of the valve. Located in an annular chamber, formed between a section of the housing bore and the control slide valve is a control ring arranged coaxially with the valve and guided displaceably thereupon. Valve seats are spaced axially from each other both in the housing bore and on the control slide valve. The control ring comprises inner mating surfaces and outer mating surfaces cooperating with the valve seats. Provided between the two valve seats in the control slide valve is a flow channel running therein which is closed at one end depending upon the position of the control ring. The latter is held by the pressure of the flowing medium in the appropriate closed position, but the changeover may be effected independently of the pressure since no axial forces are applied to the control slide valve by the flowing medium.

53. 发明专利

IT8352899V0 未知
公开(公告)号：IT8352899V0
公开(公告)日：1983-02-03
申请号：IT5289983
申请日：1983-02-03
申请人： SAUDER KARL
发明人： SAUDER KARL
IPC分类号： F15B13/04 , F15B13/042 , F16K11/04 , F16K11/10 , F16K39/00 , F16K39/02
摘要： A hydraulic control device consists of a housing, a control slide valve displaceable in a bore of the housing, and a control ring. Axial displacement of the control slide valve makes it possible to connect together or to disconnect various connecting lines depending upon the position of the valve. Located in an annular chamber, formed between a section of the housing bore and the control slide valve is a control ring arranged coaxially with the valve and guided displaceably thereupon. Valve seats are spaced axially from each other both in the housing bore and on the control slide valve. The control ring comprises inner mating surfaces and outer mating surfaces cooperating with the valve seats. Provided between the two valve seats in the control slide valve is a flow channel running therein which is closed at one end depending upon the position of the control ring. The latter is held by the pressure of the flowing medium in the appropriate closed position, but the changeover may be effected independently of the pressure since no axial forces are applied to the control slide valve by the flowing medium.

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