Abstract:
A geared hydraulic machine destined to function as a pump or a motor, comprising at least a module (1 ) comprising a body (10) in which two chambers are afforded, which two chambers intersect, and each of which contains a gear (12, 13) which enmeshes with a gear (12, 13) contained in the other chamber, the body (10) having at least an open end that is closed by a cover (20) comprising at least a seating (21, 22) for a support bearing (210, 220) of at least a gear (12, 13) ofhte gears; the coupling between the body (10) and the cover (20) comprises at least two abutments (23, 24) which are fashioned in one of the body (10) and the cover (20), each of which abutments (23, 24) is housed in a respective sunken seating (16, 17) which is afforded in the other of the body (10) and the cover (20).
Abstract:
A hydraulic piston pump (100, 300, 400) comprises a hollow body (105) internally of which are afforded: an aspirating conduit (110), a delivery conduit (115), and at least a pumping chamber (120) housing an alternating piston (195), in which the pumping chamber (120) is separated from the aspirating conduit (110) and the delivery conduit (115) respectively by an aspirating valve (140) and by a delivery valve (145), the hollow body (105) exhibiting at least a gap (165, 125) establishing communication between the pumping chamber (120) and an exterior environment, the communication being obstructed by a closing element (175, 340, 440) fixed to the hollow body (105). Inside the gap (165, 125) a sealingly inserted separating element (180, 310, 410) separates the pumping chamber (120) from the closing element (175, 340, 440), such that a gap (185, 360, 450) is defined between the closing element (175, 340, 440) and the separating element (180, 310, 410), which gap (185, 360, 450) is in hydraulic communication with the delivery conduit (115) through a channel (190, 365, 455) formed in the hollow body (105).
Abstract:
A cleaning device (1) for flat surfaces comprising:
a casing (2) comprising a base (4) and a cover (5), said base (4) being provided with a first opening (6) and with a second opening (7) communicating with an aspirator (11) arranged in said casing (2); a roller (9) with bristles (10) arranged in said casing (2) and facing said first opening (6); a dispenser group (14) facing said second opening (7) and communicating with a steam generator (17) at atmospheric pressure; a cleaning cloth (21) permeable to the air and to the liquids covering said second opening (7);
characterised in that said dispenser group (14) dispenses steam onto a portion of cloth (21), the remaining portion of the cloth (21) that covers said second opening (7) being subjected to suction through said aspirator (11) communicating with said second opening (7).
Abstract:
Water pump, comprising a casing (1) carrying a rotatable shaft (9) provided with at least one eccentric cam (7) for operating at least one automatically returning radial piston (13), the operative chamber of which is connected to intake and delivery conduits respectively by way of interposed automatic valve means, between the eccentric cam and the piston there being interposed an idle annular thrust member (6) which constantly contacts the piston head.
Abstract:
Water pump, comprising a casing (1) carrying a rotatable shaft (9) provided with at least one eccentric cam (7) for operating at least one automatically returning radial piston (13), the operative chamber of which is connected to intake and delivery conduits respectively by way of interposed automatic valve means, between the eccentric cam and the piston there being interposed an idle annular thrust member (6) which constantly contacts the piston head.
Abstract:
A geared hydraulic machine destined to function as a pump or a motor, comprising at least a module (1) comprising a body (10) in which two chambers are afforded, which two chambers intersect, and each of which contains a gear (12, 13) which enmeshes with a gear (12, 13) contained in the other chamber, the body (10) having at least an open end that is closed by a cover (20) comprising at least a seating (21, 22) for a support bearing (210, 220) of at least a gear (12, 13) of the gears; the coupling between the body (10) and the cover (20) comprises at least two abutments (23, 24) which are fashioned in one of the body (10) and the cover (20), each of which abutments (23, 24) is housed in a respective sunken seating (16, 17) which is afforded in the other of the body (10) and the cover (20).
Abstract:
A hydraulic machine (1) comprising a casing (40) to which a head (10) is fixed, the head (10) being provided with at least a cylindrical seating (20) destined to axially slidingly receive a piston (30), in which the cylindrical seating (20) is afforded in a body (21) removably associated to the head (10) and removable in a sliding direction of the piston (30) on an opposite side to the casing (40).
Abstract:
A power unit for self-propelled machines usable both indoors and outdoors, comprising an i.c. engine (1) with relative starter motor (5), a rechargeable battery (77) electrically connected to said motor via starter control means, a current generator (6) provided for recharging said battery under the control of said i.c. engine, at least one electric motor (160) connected to the generator and intended to operate at least one machine member, such as a drive wheel (16), and operating and control means (88) for the said elements, in which said i.c. engine is permanently coupled to said generator in order, with the battery normally excluded and with the machine operating under not particularly severe conditions, to provide said at least one operating motor with the energy necessary for its operation, plus an overcurrent intended to charge said battery, if necessary, via said means.
Abstract:
A safety valve (10, 10B) comprising an internal volume in which a piston (30) is slidably housed, which piston (30) is destined to sub-divide the internal volume into two chambers, of which a first chamber (27) communicating with an inlet (21), with an outlet (22) and with a discharge (23) for a fluid, and a second chamber (28) communicating with the outlet (22) downstream of pressure reducing means (24) of the fluid between the first chamber (27) and the outlet (22), a first stem (32) fixed to the piston (30), which extends into the first chamber (27) and comprises an obturator organ (35) destined to cooperate with a valve seating (34) in order to at least partly close communication between the first chamber (27) and the discharge (23) following a displacement of the piston (30) in a volume-reducing direction of the second chamber (28), and in order to open the communication following a displacement of the piston (30) in the opposite direction, and a second stem (36) fixed to the piston (30), which second stem (36) extends into the second chamber (28) and is slidably inserted in an opening (37) of a delimiting wall (38) of the second chamber (28).