Abstract: A mounting hub operable to connect a flexible impeller to a drive shaft. The mounting hub is detachable from the impeller, and is adapted to permit the impeller to be decoupled rotationally from the impeller drive shaft during installation, and then recoupled rotationally once the flexible impeller is in position.

Abstract: A flexible impeller pump designed for use in dispensing a flowable food products. The flexible impeller pump includes a cover, impeller assembly and a pump body that are assembled to create the pump without other separate components. The components can be permanently connected to each other to create a disposable pump or can be disassembled for cleaning and reuse. The impeller assembly includes an impeller shaft and a flexible impeller molded over the impeller shaft to prevent separation. The impeller assembly is received within the pump body and the cover is secured to the pump body. The cover includes a seal that is molded over the pump body to prevent separation of the seal from the cover. The impeller shaft extends through the pump body and is coupled to a drive shaft of an electric motor that is operable to drive the impeller pump.

Abstract: A transfer pump. The pump is for displacing fluid and may generally include a housing; a pump including an impeller, the pump being disposed within the housing for creating suction to draw the fluid through the impeller; a motor for driving the pump; a battery operable to power the motor; and a sensor for sensing current drawn by the motor. The motor may be deactivated when the current drawn by the motor reaches a predetermined current value for a predetermined amount of time.

Abstract: A fluid working system such as a pump for displacing a working fluid such as hydraulic fluid or a motor using a working fluid is provided. The system may have a positive displacement machine which includes one or more working chamber with displacement means such as a cylinder with a reciprocating piston. There are also two or more fluid ports to allow the working fluid to flow into and out of the working chamber. The working fluid flows from one fluid port means to another either being forced to do so when pumped or moving the piston when functioning as an engine. The fluid working system has associated therewith a non-dead compliance volume of a material such as syntactic foam. This compliance volume acts to smooth any pressure fluctuations within the working fluid system.

Abstract: An impeller pump having a housing, which has an inlet and an outlet, and having an impeller wheel with a plurality of elastic impeller blades is described. The cross section of the inlet and/or of the outlet is substantially in the shape of a polygon on the side facing the housing interior.

Abstract: An electrical motor vehicle vacuum pump arrangement includes a housing assembly, a pump apparatus arranged therein, a drive motor, and a sound dampener. The housing assembly includes an inlet and an outlet opening arrangement. The pump apparatus includes a pump rotor housing with an inlet- and an outlet-side face wall, and a pump rotor housing part arranged therebetween. The inlet- and the outlet-side face wall and the pump rotor housing part enclose a pump rotor chamber with a pump rotor arranged therein. The drive motor is arranged in the housing assembly. The drive motor includes a motor rotor and a motor stator. The sound damper includes a first and a second sound damping chamber, and a sound dampener element. The first sound damping chamber is connected to the pump rotor chamber and to the second sound damping chamber. The second sound damping chamber is connected to the outlet opening arrangement.

Abstract: An impeller is attached to a rotary shaft provided in an inner space of a housing and includes a tube fixed to the rotary shaft and a plurality of blades protruding toward an outer diameter direction from the tube. A tip of each blade is in slidable contact with an inner peripheral surface of the housing. Each blade has a shape curved toward a rotation-direction rear side of the rotary shaft in a free state and includes an extension surface on a rotation-direction front side of the rotary shaft and a compression surface on the rotation-direction rear side of the rotary shaft. A curvature radius of a root on the compression surface in the blade is formed larger than a curvature radius of a root on the extension surface in the blade.

Abstract: A pump for reducing agents of an exhaust gas purification system for an internal combustion engine of a motor vehicle includes: a diaphragm carrier; a diaphragm arranged on the diaphragm carrier, the diaphragm having a radially outer collar; and a pump housing configured to secure the radially outer collar of the diaphragm. The radially outer collar of the diaphragm has a reinforcing ring.

Abstract: Blood pump devices having improved rotor design are provided herein. Such blood pump devices include rotors having cantilevered support through a sealed mechanical bearing disposed outside a blood flow path of the device so as to avoid thrombus formation caused by blood contact with the bearing. The bearing means can be rotatably coupled with a proximal portion of the rotor shaft extending outside the fluid path, while a stator drives rotation of the rotor shaft so that one or more rotor blades on a distal portion of the rotor force blood flow through the device. The bearing means may include one or more radial bearings on a proximal portion of the rotor shaft that are isolated from the blood flow path by one or more rotary seals.

Abstract: A pump fitting has an inlet adaptor (10) for connection to an outlet (39) of a container (38) of fluid and including an inlet passage (10), an outlet passage (11) for fluid and a pump housing (12) between the inlet passage (10) and the outlet passage (11). The pump housing (12) contains a rotor (17) rotatably received in an interior surface of the housing (12). The rotor (17) includes a housing-engaging surface (23, 24) co-operating with the interior surface of the housing (12) to form a seal therebetween and also including at least one shaped surface (21, 22) radially inwardly of the housing-engaging surface and forming with the interior surface of the housing a chamber (25, 26) for conveying fluid from the inlet passage (10) to the outlet passage (11) on rotation of the rotor (17).

Abstract: A flexible impeller pump includes improved flexible impeller geometry, an impeller shaft having protruding portions that produce a stronger and more durable connection between the impeller shaft and the flexible impeller, a smoother housing cam surface, and wear resistant surfaces that are disposed between end faces of the flexible impeller and adjacent housing end walls.

Abstract: A progressing cavity pump/motor (10) includes a stator housing (12), a polymeric layer (14), and a rotor (16). A plurality of axially extending grooves (24) are formed in the interior surface of the stator housing for receiving polymeric material therein. At least one seal gland (46) adjacent an end of the polymeric layer maintains sealing between the stator housing and the polymeric layer.

Abstract: A fluid device includes a housing and a rotor assembly disposed in the housing. The rotor assembly includes a core and a coating. The core has a first surface, an oppositely disposed second surface and an outer peripheral surface that extends between the first and second surfaces. The core defines a bore that extends through the first and second surfaces. The coating coats at least a portion of the core. The coating is a water-swellable plastic material.

Abstract: An integrally formed vane (301) is disposed slidably in a vane groove (205a) of a first cylinder (205) and a vane groove (206a) of a second cylinder (206). A cut-out (301a) with a width substantially equal to the thickness of an intermediate plate (304) is provided in the vane (301), which is divided by this cut-out (301a) into a first vane portion (301b) whose leading end makes contact with a first piston (209) at its leading end and a second vane portion (301c) whose leading end makes contact with a second piston (210). This configuration allows the first vane portion (301b) to be pushed toward the first piston (209) side by the pressure difference acting on the second vane portion (301c) and makes it possible to keep a contact state between the first vane portion (301b) and the first piston (209), even when no pushing force toward the first piston (209) side that results from the pressure difference acts on the first vane portion (301b).

Abstract: An internal combustion rotary engine that employs resilient, flexible vanes attached to a rotor that spins within an oval cavity in a housing. The vanes, which are long enough to extend slightly radially from the rotor by a distance beyond the interior surface of the cavity, bend in response to the cyclical variation between the rotor and the oval cavity in order to define four chambers and form a sliding seal with the interior surface. As the vanes revolve with the rotating rotor, the volumes of these four chambers vary cyclically and enable the four phases of an approximate Otto Cycle. The engine is more efficient than a conventional, reciprocating engine because the expansion force of the combustion gas acts directly on the rotating element with a minimum of moving parts.

Abstract: A pump has a rotor with two or more flexible vanes forming one or more compartments between adjacent vanes. The rotor is mounted offset relative to a rotor sleeve such that the volume of the compartments varies as the rotor rotates in the sleeve. Incoming fluid is supplied to the compartments along a plane perpendicular to the plane of rotation of the vanes. Fluid is discharged from the compartments through discharge slots in the sleeve leading into a discharge outlet which is tangential relative to the plane of rotation of the vanes. Each flexible vane is formed from at least two thin leaf springs separated by a layer of laminate and joined to a shoe which engages the inner surface of the sleeve as the rotor rotates. The pump in accordance with the present invention is energy efficient and uses significantly less power than comparable known devices.

Abstract: A pump has flexible vanes arranged in a helical path in the clearance between the stator and the rotor. In one form, the helically wound vanes are present on the rotor, the stator including at least one can surface to flex the vanes. In another form, the helically wound vanes are present on the stator, the rotor including at least one can surface to flex the vanes.

Abstract: A flexible impeller pump having a transparent safety cover. The pump includes a flexible impeller and a housing having a pump and cover. The pump end cover comprises a transparent safety cover which is capable of attachment to the housing. A transparent heat resistant insert is also in contact with the impeller. A spacing means separates the transparent heat resistant insert from the safety cover, thereby forming a chamber. Typically the transparent heat resistant insert is made of borosilicate glass and the transparent safety cover of acrylic plastic or polycarbonate plastic.

Abstract: A high pressure fluid forcing pump having a cavity adaptable for receiving an impeller assembly rotatable within the cavity of the pump. The impeller assembly includes an impeller engaged between first and second spaced apart bearing plates and having tips fixed to the bearing plates adjacent an outer circumference of the bearing plates. The impeller includes a locking arrangement that ensures that the impeller rotates about a motor shaft of the pump. The shaft is positioned in the cavity of the housing, wherein the rotational axis of the shaft and impeller are offset from the longitudinal axis of the cavity and first and second bearing plates.

Abstract: A sea water pump (130) for a marine propulsion system includes a housing (130) having a generally cylindrical pumping chamber (134) defined by a generally cylindrical sidewall (136) extending axially between opposite end walls (138 and 140). A multi-vaned rotary impeller (44) in the chamber is driven by an impeller shaft (28) extending axially into the chamber through one of the endwalls (40). An intake port (146) at the other endwall (140) has a first branch (148) providing radial flow (170, 172) into the chamber, and a second branch (154) providing axial flow (178) into the chamber. A discharge port (158) has a first branch (160) receiving radial flow (174, 176) out of the chamber, and a second branch (166) receiving axial flow (180) out of the chamber.

Abstract: The fluid motor, e.g. a liquid meter, a mixing apparatus or a turbine, has a chamber (1) with a rotor having stiff blades (7) which at their outer ends are provided with plate formed wings (8) of elastomeric material. The wings (8) are by a thin, overlapping part fastened to the reverse side of the blades (7) in relation to the rotating direction. When passing between outlet (5) and inlet (4) of the chamber (1) the wings (8) are deflected by a wall part in the chamber. The rotor is smooth-running, noise-free and inexpensive to produce and repair in connection with abrasion of the wings.

Abstract: A pump having a housing with an integral fluid reservoir and flexible end plates to permit the pump to be run dry for an extended period of time. A pair of reservoirs are provided, one each side of a pumping chamber. These reservoirs are in fluid communication with the pumping chamber via openings provided through the end plates of the pumping chamber and slots in the impeller hub. When the pump is run dry, fluid stored in these reservoirs is permitted to be released into the pumping chamber to provide a lubrication between the impeller and the chamber walls, thus reducing friction. The chamber end plates are thin and flexible. These end plates can bow outwardly due to the impeller expanding from increased heat when the pump is run dry, and thus reduce friction with the impeller. Accordingly, the pump can be run dry for an extended period of time without damaging or destroying the pump impeller.

Abstract: An articulated air vane air or hydraulic motor has a rotor core disposed coaxially in a cylindrical housing, with a plurality of articulating vanes that seat in axial sockets or slots in the rotor core. A crescent shaped insert defines a cam surface in the chamber between the housing and the core. Inlet and exhaust ports are formed either in the housing cylinder or in the end plates. Vane wear is significantly reduced and injected lubricant is not required. The vanes can be generally P-shaped in cross section, with stop structure to limit the articulating motion.

Abstract: In a rotary vane positive displacement pump (28), the pump impeller (56) has weights (68-73) at the outer tips of the vanes (58-63) of greater mass per unit volume than the vanes and increasing outward centrifugal force urging engagement of the outer tips against the pump housing sidewall (44). In another embodiment, enlarged outer tips (86) of the vanes (82) are offset from the radial center-line (83) of the vane in a direction opposite the direction of rotation. In a further embodiment, a plurality of filler blades (91-96) are provided between respective vanes (101-106) and occupy space therebetween and displace volume in the pumping chamber (46). The filler blades have tapered leading edges (93a) accommodating flexure of the respective vane (103) during greatest flexure thereof. In further embodiments, the leading edges of the filler blades have a concave arcuate profile (128, 146) receiving in complementary relation enlarged outer tips (122, 138) of respective vanes upon flexure thereof.

Abstract: A corrosion resistant coolant pump for placement in the cooling system of a marine drive includes a corrosion resistant member mounted to and rotatable with a drive shaft interconnected with and rotatable in response to the engine crankshaft. The corrosion resistant member is preferably a cup adapted for receiving and enclosing an end of the drive shaft, with a portion of the cup extending into a cavity formed in the coolant pump housing. The cavity is in communication with marine drive cooling system. An impeller is connected to the cup and housed within the cavity for pumping coolant through the system. The cup is interconnected with the drive shaft so as to be rotatable in response thereto, thereby driving the impeller in response to rotation of the drive shaft. A sealing mechanism is provided about the cup for sealing the cavity and preventing contact of coolant with the drive shaft.

Abstract: A marine drive water pump impeller (1) is provided for a marine rotary vane positive displacement water pump. A filament wound annular drive hub (3) is cured with resin polymer. A rubber annular base (6) having a plurality of flexible radial vanes (7), is molded in place around the drive hub (3). The resin polymer and the rubber are compatible and enable substantial bond strength therebetween. The hub (3) is wound in the circumferential hoop direction, providing substantial hub strength. The invention overcomes frozen water pump problems in marine drives used in freezing environments.

Abstract: A fluid pump assembly comprising a circular drive shaft including a flat side, and an impeller hub including an inner surface formed in part by a circular bore receiving the drive shaft and by a generally crescent-shaped keyway adjoining the bore and having opposite ends, one of the ends being blunt, and an arcuate surface extending between the ends. The assembly also comprises a retainer key positioned in the keyway and having a flat surface complementary with the flat side of the drive shaft, an arcuate surface complementary with the arcuate surface of the keyway, and a blunt end complementary with the blunt end of the keyway.

Abstract: A bearing unit for a rotating component, such as a toothed gear or guide pulley, with an integrated pump consists of a housing with a pump chamber defined therein, a pump rotor installed in the pump chamber, a support pin having an end supported in the housing, and a bearing ring rotatably mounted on the support pin. The bearing unit is mountable on a support surface of an associated machine element, such as an engine block by means of a flange on the housing. The pump rotor and the rotating component are securely mounted on the outer surface of the bearing ring in mutual abutting relationship. The pump rotor is disposed between the housing flange and a web portion of the rotating component. The rim portion of the rotating component circumscribes the pump rotor. A sliding sealing ring is provided between the housing or housing ring and the rotating component.

Abstract: There is disclosed an oil changing and lubricating system for a vehicle comprising a housing connectable to the vehicle, a pump affixed to the housing, the intake of the pump communicating with an oil reservoir for the vehicle and the outlet of the pump being adapted for communication with a receptacle for oil removed from the reservoir when the pump is in use and lubricant inputs mounted on the housing for connection to a supply of lubricant, the inputs communicating with the points of the vehicle requiring lubrication for the delivery of lubricant thereto.

Abstract: A marine propulsion device comprising an engine with a cooling jacket and a fluid pump assembly for circulating water through the cooling jacket. The fluid pump assembly comprises a housing including a pump chamber, an impeller within the housing, a drive shaft extending into the pump, means for rotating the drive shaft, and interengaging means on the drive shaft and on the impeller for driving the impeller with the drive shaft so as to locate the drive shaft and the impeller in a single driving relation to each other.

Abstract: A fluid pump for pumping a fluid from an input conduit to an output conduit comprising a housing having a cup-shaped rotor assembly rotatably disposed within the housing. A vane ring assembly is slidably disposed within the rotor assembly. A protuberance on the vane ring engages a corresponding indentation disposed on an inner and outer cup to prevent the vane ring assembly from rotating within the rotor assembly. A hub assembly is disposed within the vane ring assembly such that the axis of the hub assembly is parallel and eccentric to the axis of rotation of the vane ring assembly. A wear plate is in juxtaposition with the open end of the rotor assembly and a plurality of band-shaped vanes interconnect the vane ring assembly and the hub assembly. The vanes are disposed in a spaced-apart relationship parallel to the axis of rotation of the vane ring assembly to form a plurality of pump chambers.

Abstract: A rotary type liquid pump of the type used with marine outdoor motors is made resistant to abrasive materials in muddy water which it pumps by providing flexible seals to prevent the water from stealing between the impeller boss and bush, and the drive shaft.

Abstract: Marine drives having water cooled engines utilize a water pump mounted over the drive shaft and internal to the drive shaft housing to provide engine cooling, the pump having stamped metal housing parts and a flexible impeller.

Abstract: A liquid dispensing pump of the motor-driven flexible vane impeller type suitable for use in an automobile windshield washer system includes a housing that defines a motor chamber having a motor supporting end wall. A closure wall is fixed to the end wall and an impeller chamber having a peripheral surface is defined between the walls. An impeller is rotatable in the impeller chamber by a motor supported in the motor chamber, which has a shaft that extends through an opening in the end housing wall. Inlet and outlet passages respectively conduct liquid to and from the impeller chamber. This pump further comprises the improvement that the impeller chamber is constituted by confronting recesses, formed in the closure and end walls, that are circumferentially bounded by portions of the walls that have confronting surfaces meeting at a tight interface. The interface bounds the peripheral impeller chamber surface.