Abstract: A first stent delivery system provided with a sheath for covering the stent, the sheath including proximal sheath portion adapted to be movable in a proximal direction and a distal sheath portion adapted to be moveable in a distal direction. A second stent delivery system including an outer and intermediate tubular members covering a chamber with a preloaded stent, the outer tubular member being retractable prior to the retraction of the intermediate sheath and release of the stent. A third stent delivery system including with an inflatable balloon at a distal end of the system for fixing the system in place within the vessel prior to the release of the stent thereby insure accurate stent deployment.

Abstract: A first stent delivery system provided with a sheath for covering the stent, the sheath including proximal sheath portion adapted to be movable in a proximal direction and a distal sheath portion adapted to be moveable in a distal direction. A second stent delivery system including an outer and intermediate tubular members covering a chamber with a preloaded stent, the outer tubular member being retractable prior to the retraction of the intermediate sheath and release of the stent. A third stent delivery system including with an inflatable balloon at a distal end of the system for fixing the system in place within the vessel prior to the release of the stent thereby insure accurate stent deployment.

Abstract: A first stent delivery system provided with a sheath for covering the stent, the sheath including proximal sheath portion adapted to be movable in a proximal direction and a distal sheath portion adapted to be moveable in a distal direction. A second stent delivery system including an outer and intermediate tubular members covering a chamber with a preloaded stent, the outer tubular member being retractable prior to the retraction of the intermediate sheath and release of the stent. A third stent delivery system including with an inflatable balloon at a distal end of the system for fixing the system in place within the vessel prior to the release of the stent thereby insure accurate stent deployment.

Abstract: A first stent delivery system provided with a sheath for covering the stent, the sheath including proximal sheath portion adapted to be movable in a proximal direction and a distal sheath portion adapted to be moveable in a distal direction. A second stent delivery system including an outer and intermediate tubular members covering a chamber with a preloaded stent, the outer tubular member being retractable prior to the retraction of the intermediate sheath and release of the stent. A third stent delivery system including with an inflatable balloon at a distal end of the system for fixing the system in place within the vessel prior to the release of the stent thereby insure accurate stent deployment.

Abstract: Electrical heating apparatus includes an electrical heater in which the inlet conduit for inletting cold water to the electrical heater and/or the outlet conduit for outletting hot water thereto from the electrical heater is integrally formed with a pressure-responsive device which senses the flow rate to or through the electrical heater to control the energization of the electrical heater. The apparatus also includes a regulating valve constituted of a membrane and a stem having a head of convex configuration facing the membrane but normally spaced therefrom to define a flow-control passageway which creates differential pressures acting on the membrane tending to deform the membrane such as to maintain a relatively constant flow rate through the flow control passageway despite variations in water inlet pressure.

Abstract: Electrical heating apparatus includes an electrical heater in which the inlet conduit for inletting cold water to the electrical heater and/or the outlet conduit for outletting hot water thereto from the electrical heater is integrally formed with a pressure-responsive device which senses the flow rate to or through the electrical heater to control the energization of the electrical heater. The apparatus also includes a regulating valve constituted of a membrane and a stem having a head of convex configuration facing the membrane but normally spaced therefrom to define a flow-control passageway which creates differential pressures acting on the membrane tending to deform the membrane such as to maintain a relatively constant flow rate through the flow control passageway despite variations in water inlet pressure.

Abstract: A static sprinkler presettable to select a desired water discharge pattern includes a lower part formed with a cavity defined by a cylindrical surface and extending axially from an inner end of the lower part serving as a water inlet through the outer end of the lower part; and an upper part carried by the lower part and having a cylindrical stem received within the cavity and engaging the cylindrical surface. The upper part is rotatably presettable with respect to the lower part to align one of a plurality of water discharge openings in one part with a passageway in the other part to thereby enable selection of the water discharge pattern of the sprinkler.

Abstract: A dispenser for dispensing a mixture of a substance diluted with a liquid, includes a housing having an attaching section for attaching the housing to a container for the substance, a dispenser inlet for connection to a pipe supplying the liquid, a dispenser outlet for connection to a pipe to deliver the mixture, a chamber communicating with the dispenser inlet and outlet and including a chamber bottom wall formed with a container inlet port and with a container outlet port such that, when a container is attached to the housing, the container inlet port leads from the chamber to the container, and the container outlet port leads from the container via the chamber to the dispenser outlet, and a control valve in the chamber for controlling the flow of the liquid therethrough to the container inlet port.

Abstract: A portable water-mixture dispenser includes a housing having a manually-grippable handle, a container carried by the handle for containing a substance to be selectively mixed with the water when discharged from the housing outlet, and a control valve within a control chamber in a connecting passageway communicating with an inlet port of the container. The control valve is manually presettable to: (a) a first position to steer the water from the housing inlet directly to the housing outlet; (b) a second position to steer the water from the housing inlet to the container inlet port; or (c) a third position to block the flow of water from the housing inlet to both the container inlet port and the housing outlet.

Abstract: Irrigation apparatus includes a feeder line connectible to a source of pressurized water, and an outer line of larger diameter than, and enclosing, the feeder line to define an annular water chamber between them. The outer line includes a plurality of irrigation devices spaced along its length communicating with the water chamber. A plurality of pulsator devices are spaced along the length of the feeder line and connect the feeder line to the water chamber.

Abstract: A ball-type water sprinkler includes a ball freely movable within a chamber formed in a rotor and having two water inlets oriented to direct the water to flow circumferentially of the chamber in opposite directions, an impact element fixed to the rotor so as to be impacted by the ball and to rotate the rotor according to the direction of rotation of the ball; a fixed stop fixed with respect to a mounting device; and a presettable stop circumferentially presettable with respect to the fixed stop and carried by a rotatable ring interposed between the mounting device and the rotor.

Abstract: A static, sector-type water sprinkler producing a variable-sector water-distribution pattern includes an outlet opening in the form of a helical slot having an effective length around the circumference of its housing which may be varied for preselecting the sector angle of the water distribution around the sprinkler, and a blocking member engageable with the inner surface of the housing on opposite sides of the slot to preselect the portion thereof to be unblocked and thereby the sector angle of the water distribution around the sprinkler.

Abstract: A drip irrigation unit for insertion into a water supply pipe for reducing the flow through an outlet opening in the water supply pipe, includes a cylindrical member of a deformable elastomeric material fixed within the water supply pipe. The cylindrical member is formed with an inlet opening therethrough for conducting water from the interior of the water supply pipe to the outer face of the cylindrical member, and an outlet cavity in the outer face of the cylindrical member alignable with the outlet opening in the water supply pipe. A regulated flow-reducing pathway between the inlet opening and outlet cavity includes multiple, series-connected pressure-compensating chambers whose cross-sectional areas are changed by the deformation of the elastomeric cylindrical member to regulate the flow of the water in response to changes in the water supply pressure.

Abstract: A static, sector-type water sprinkler producing a variable-sector water-distribution pattern, includes an outlet opening having an effective length around the circumference of its housing which may be manually varied for preselecting the sector angle of the water distribution around the sprinkler. The outlet opening is defined by a helical slot, and its effective lenth is varied by a blocking member which is manually movable with respect to the slot to preselect the portion thereof to be unblocked, and thereby the sector angle of the water to be distributed around the sprinkler.

Abstract: A gear drive sprinkler includes a fixed ring gear fixed to the sprinkler housing and having a circular array of teeth; a rotatable ring grear coupled to the sprinkler nozzle and having a circular array of teeth coaxial with, but of a different number than, the teeth of the fixed ring gear; and a planetary gear rotated by the sprinkler drive and having a circular array of teeth meshing with the teeth of both ring gears so as to planetate around both ring gears and thereby to rotate the rotatable ring gear at an angular velocity corresponding to the difference in the number of teeth in the two ring gears.

Abstract: A moisture-responsive valve assembly includes a housing having a moisture-swellable body to swell in volume in response to soil moisture, and a bi-stable snap-action device for controlling the valve in response to the volume of the moisture-swellable body. The valve assembly further includes a damped delay mechanism effective to close the valve after it has been open for a predetermined period of time.