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    • 41. 发明公开
    • PISTON-CHAMBER COMBINATION
    • EP3405704A1
    • 2018-11-28
    • EP15834794.8
    • 2015-11-24
    • NVB Propulsion International LtdVan Der Blom, Nicolaas
    • VAN DER BLOM, Nicolaas
    • F16J3/06F04B53/14F16F9/48F16J10/00F15B15/14
    • F16J10/00F04B53/143F16F9/483F16J3/06
    • A piston-chamber combination comprising a chamber (1) which is bounded by an inner chamber wall (4), and comprising a piston (1) in said chamber (2) to be engagingly movable relative to said chamber wall (4) at least between a first position and a second position of the chamber (2), said chamber (2) having cross-sections of different cross-sectional areas and differing circumferential lengths at the first and second longitudinal positions, and at least substantially continuously different cross-sectional areas and circumferential lengths at intermediate longitudinal positions between the first and second longitudinal positions, the cross-sectional area and circumferential length at said second longitudinal position being smaller than the cross-sectional area and circumferential length at said first longitudinal position, said piston (1) is comprising an member (12) for suspension of the sealing (8, 9), said member (12) is rotatable, and said sealing (8, 9) is comprising a separate part (6, 6') engaging the wall (4) of said chamber (2) and a sealing (8, 9) made of elastically deformable impervious material, and mounted on the piston rod (5). This is achieved by the piston (1) is produced to have a production-size of said separate part (6') and said sealing (8, 9) in the stress-free and undeformed state thereof in which the circumferential length of the piston (1) is approximately equivalent to the circumferential length of said chamber wall (4) at said second longitudinal position, the piston (1) being expandable from its production size in a direction transversally with respect to the longitudinal / circular direction of the chamber (2) thereby providing for an expansion of sealing (7) of the piston (1) from the production size thereof during the relative movements of the piston from said second longitudinal position to said first longitudinal / circular position, one end, closest to a second longitudinal / circular position of the chamber, the sealing (7, 7') is embedded in a separate part (6, 6'), said sealing (8,9) of the piston (1) is comprising sealing sections (19, 20; 51, 51') in a direction along the piston rod (5), said sealing (7) is updivided in said sections over the circumference of said sealing (7), and, the angle (δ;ξ) in-between two adjacent sealing sections is much less than 180°, one other end, closest to a first longitudinal / circular position of the chamber, said sealing (7) is updivided updivided in said sections over the circumference of said sealing (7), and, the angle (ε;ψ) in- between two adjacent sealing sections is bigger than said angle (δ;ξ).
    • 48. 发明公开
    • IMPROVEMENTS TO THE OPERATION OF A PRESSURE GENERATOR
    • VERBESSERUNGENFÜRDEN BETRIEB EINES DRUCKGENERATORS
    • EP2133556A1
    • 2009-12-16
    • EP08723808.5
    • 2008-02-25
    • Olvera Diaz, Luis
    • Olvera Diaz, Luis
    • F03B17/00F16J10/00
    • F04B19/003F04B9/107F04F1/16F04F5/42
    • The invention relates to a pressure generator and to the novel features thereof, which is intended to multiply pressure output through the use of sealed chambers containing rodless pistons acting on the fluid which operates as a force transmitter and concentrates the force on the frusto-conical covers at each end of the piston. Owing to the taper of the covers, the force is directed towards the directional valves which are housed in the ends of the piston and distribute the pressure in an ordered manner through fluid conductors towards the hydraulic motor. The operation and novel features of said generator render these systems more efficient.
    • 本发明涉及一种压力发生器及其新颖特征,其旨在通过使用包含作用在作为力传递器的流体上的无杆式活塞的密封室来增加压力输出,并将力集中在截头圆锥形盖 在活塞的每一端。 由于盖的锥度,力被引导到方向阀,该方向阀被容纳在活塞的端部中,并且通过流体导体以有序的方式将压力分配给液压马达。 所述发电机的操作和新颖特征使得这些系统更有效率。