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    • 1. 发明授权
    • Pressure-regulating valve
    • US3572373A
    • 1971-03-23
    • US3572373D
    • 1969-09-16
    • PHILIPS CORP
    • KRAAKMAN HILLEBRAND JOHANNES J
    • F16K17/10G05D16/10G05D16/16
    • G05D16/166G05D16/10Y10T137/7766
    • A PRESSURE-REGULATING VALVE FOR A HYDRAULIC MEDIUM IN WHICH A VALVE BODY IS AXIALLY MOVABLE IN A CYLINDER. FLUID IS ACTIVE ON THE FRONT SIDE OF THE VALVE BODY AND FLUID HAVING AN ADJUSTABLE CONTROL PRESSURE IS ACTIVE ON THE REAR SIDE OF THE VALVE. THE FLUID ON THE FRONT SIDE IS THE MEDIUM TO BE REGULATED. THE TWO SIDES OF THE VALVE BODY COMMUNICATE WITH EACH OTHER THROUGH A RESTRICTION. THE OUTER CIRCUMFERENCE OF THE VALVE BODY COMPRISES AT LEAST ONE ADJUSTABLE OUTLET PORT FOR THE FLUID WITH THE PRESSURE TO BE REGULATED. THE FRONT SIDE OF THE REGULATING VALVE COMMUNICATES WITH AN ANNULAR CHAMBER WHICH IS FORMED IN A SPRING-LOADED CONTROL VALVE WHICH COMPRISES AT LEAST TWO VALVE PARTS MOVABLE IN A CYLINDER AND HAVING DIFFERENT OUTSIDE DIAMETERS. ONE WALL OF THE ANNULAR CHAMBER IS FORMED BY AN ANNULAR SURFACE OF THE VALVE PART SITUATED AT RIGHT ANGLES TO THE CENTER LINE OF THE VALVE AND HAVING THE LARGER OUTSIDE DIAMETER, SAID VALVE PART COMPRISING A FURTHER ANNULAR CHAMBER WHICH COMMUNICATES THROUGH A DUCT WITH THE SPACE BEHIND THE REGULATING VALVE. THE OUTER CIRCUMFERENCE OF SAID VALVE HAS AT LEAST ONE OUTLET PORT OF A CONTROLLABLE SIZE.
    • 2. 发明授权
    • Piston sealing control system
    • 活塞密封控制系统
    • US3585906A
    • 1971-06-22
    • US3585906D
    • 1969-09-16
    • PHILIPS CORP
    • KRAAKMAN HILLEBRAND JOHANNES J
    • F15B15/22F15B15/14F16J1/09F16J15/40F01B31/00
    • F15B15/149F16J1/09F16J15/40
    • A control system for sealing a hydrostatically journaled working piston relative to the wall of a working cylinder, in which a fluid pressure acts on both piston end faces. The circumference of the piston comprises at least two circumferential grooves located near each end face of the piston. A plurality of shallow bearing chambers are arranged on the circumference of the piston between the grooves. A cylinder is secured in the piston which has a movable adjusting element consisting of at least two pistons of equal diameters secured together by a rod. The free end face of the first piston of the element is in open communication with the fluid acting on an end face of the working piston. The second groove communicates with a space which communicates with the free end face of the second piston. The first groove communicates, through a bore in the working piston, with the space between the first and the second piston. The first piston has at least one slot-shaped axially extending recess on its circumference which communicates with the space between the first and the second piston and which also opens into an annular chamber in the inner wall of the cylinder. The chamber communicates, through an aperture in the cylinder wall, with a duct for removing fluid from the annular chamber.
    • 4. 发明授权
    • Hydraulic reciprocating engine
    • 液压辅助发动机
    • US3643547A
    • 1972-02-22
    • US3643547D
    • 1969-09-16
    • PHILIPS CORP
    • KRAAKMAN HILLEBRAND JOHANNES J
    • F15B11/02G05D16/10F15B13/042F15B11/08
    • F15B11/02F15B2211/50536F15B2211/56F15B2211/57F15B2211/7053F15B2211/76
    • A hydraulic reciprocating engine having a piston which is movable in a cylinder, at least one piston rod is secured to the piston. On one side of the piston a supply pressure prevails, and on the other side a regulating pressure prevails. A pressure regulating system is connected between the duct in which the supply pressure and the regulating pressure prevails. The value of a regulating pressure is adjustable in accordance with the value of the supply pressure and in accordance with an adjusting element, for example a spring, acting on a regulating valve of the system. The pressure-regulating system has at least one regulating member, in which the ratio of the surfaces of the regulating member has such a value that in the absence of a force exerted by the adjusting element, the regulating pressure adjusted by the pressure regulating valve relative to the supply pressure, has a value which is inversely proportional to the ratio of the value of the piston surfaces of the hydraulic motor.
    • 一种具有可在气缸中移动的活塞的液压往复式发动机,至少一个活塞杆固定到活塞上。 在活塞的一侧,供应压力占优势,另一方面是调节压力。 压力调节系统连接在其中供应压力和调节压力占优势的管道之间。 调节压力的值可以根据供应压力的值和根据作用在系统的调节阀上的调节元件例如弹簧来调节。 压力调节系统具有至少一个调节构件,其中调节构件的表面的比例具有这样的值,即在没有由调节元件施加的力的情况下,由调压阀相对调节的调节压力 具有与液压马达的活塞表面的值的比值成反比的值。
    • 9. 发明授权
    • Pressure-reducing valve
    • 减压阀
    • US3596676A
    • 1971-08-03
    • US3596676D
    • 1969-09-10
    • PHILIPS CORP
    • KRAAKMAN HILLEBRAND JOHANNES J
    • G05D16/10G05D7/01
    • G05D16/10Y10T137/7058Y10T137/7788
    • A pressure-reducing valve for obtaining a constant low-pressure flow of high volume of fluid which is supplied to the valve under high pressure. The valve comprises a pair of axially movable pistons connected by a rod within a valve-housing cylinder. The cylinder is closed at one end and a spring acts on free end of the piston assembly for urging the piston away from the closed end. The other end of the cylinder is provided with an outlet port through which the low-pressure fluid is passed from the valve and an inlet port is provided in the sidewall of the cylinder for introducing high pressure fluid to a space between the pistons. The piston assembly is hydrostatically journaled within the cylinder and is provided with a plurality of axially extending slits which vary in passageway size by the relative position of the piston within the cylinder. The high-pressure fluid is passed through the slits to a chamber on the other side of the piston and then through a turbulent-producing orifice to the outlet port.
    • 10. 发明授权
    • Piston sealing control system
    • US3589247A
    • 1971-06-29
    • US3589247D
    • 1969-09-16
    • PHILIPS CORP
    • KRAAKMAN HILLEBRAND JOHANNES J
    • F15B15/14F16J1/09F16J15/40F01B31/00
    • F15B15/149F16J1/09F16J15/40
    • A control system for sealing a hydrostatically journaled working piston against the wall of a cylinder carrying the piston. The cylinder is closed at both ends and the piston is provided with a piston rod extending through one of the closed cylinder ends for supplying effective work. Means are provided for supplying fluid under pressure so that the pressure acts on both end faces of the piston. The piston has a pair of circumferential grooves on its circumferential surface and a plurality of shallow chambers about its surface in between the grooves for hydrostatically journaling the piston in the cylinder. A control element, comprising a piston assembly, is mounted within said piston centrally located therein and extending longitudinally therethrough. The piston assembly comprises three separate piston elements with connecting rods between them, chambers being formed between each of the pistons and between the end pistons and the control element walls. Duct means are provided for communicating between one of the chambers between the pistons and one of the circumferential grooves and other duct means are provided for communicating between the other circumferential groove and the space adjacent one end face of the working piston. The diameters of the end faces of the piston assembly are unequal and having a ratio to each other corresponding to the ratio of surface area of the two end faces of the working piston so that the pressure exerted on both ends of the working piston is the same as the pressure exerted on the corresponding ends of the piston assembly.