Flow through a sleeve is controlled with a housing. A removable frame is positioned within the housing. A removable, tubular rotational mechanism defines a hole for receiving the sleeve therein. A pair of arms are pivotally mounted on the rotational mechanism for squeezing the sleeve. An actuator drives the rotational mechanism to pivot the pair of arms to open and to close the sleeve.

A vacuum cleaner includes a floor nozzle, a handle, a hand nozzle that can be stored at least partially in the handle, and a backbone between the floor nozzle and the handle. The vacuum cleaner further includes a motor and dustcup on the backbone. Air flow conduits define a first air flow path between the dustcup and the floor nozzle and a second air flow path between the hand nozzle and the dustcup. A flow valve is operable between an open position and a closed position based on the position of the backbone relative to the floor nozzle. When the valve is in the open position, the first air flow path is open to the floor nozzle; when the valve is in the closed position, the first air flow path is closed to the floor nozzle, focusing suction to the hand nozzle.

A throttle valve creates the equivalent of a small orifice by using a much larger orifice which is turned on and off periodically, creating a flow equivalent to a much smaller orifice. The ratio of on time to off time is changed to create the desired effective orifice. By using an elastomeric member to form the orifice seal, solid particles do not interfere with the operation of the valve.

A clamping mechanism (30) for clamping a flexible tube comprises two rotatable bobbins (22, 32), each with a tube-engaging surface portion (24) defining boundaries of a free space through which a tube may extend. The shape of the tube-engaging surface portion (24) changes around the bobbin circumference, such that axial rotation of the bobbins (22, 32) reduces the free space and thereby squeezes the tube. This allows the flow through the tube to be altered dependent on the rotation of the bobbins.

A valve apparatus for a medical injection system includes a pinching member and at least one spring-loaded anvil. A tubing line of the injection system may be positioned between the pinching member and the anvil, such that when the pinching member is moved into a pinching position adjacent to the anvil, for example, by rotation of a shaft to which the member is coupled, the pinching member compresses the tubing line against the spring-loaded anvil. The pinching member is preferably rotatable about an auxiliary axis, which is eccentric, or offset from a central axis of the shaft. A spring member of the spring-loaded anvil is preferably pre-loaded. In certain applications, the pinching member, when moved into the pinching position, applies a pinching force of greater than approximately 45 pounds, for example, to prevent flow through the tubing line at an injection pressure of up to approximately 1200 psi.

A flexible dispensing apparatus for coupling to pressurized fluid containers is described. it includes a flexible tube and a handle assembly. The handle assembly houses a second end of the tube. The handle assembly has a first side connected to a second side, a slide trigger, a roller coupled to the bottom of the slide trigger with a dowel pin, a spray nozzle assembly, a magnet reservoir, and a magnet. The first side has an inclined ramp that runs along a length of the first side and extends into the second side above and beyond a seam that is formed by the connection of the two sides. The tube is within a channel in the handle assembly formed between the inclined ramp and the roller. When the roller is rolled toward the end of the ramp it pinches the flexible tube near the top of the inclined ramp.

A flexible dispensing apparatus for coupling to pressurized fluid containers is described. It includes a flexible tube and a handle assembly. The handle assembly houses a second end of the tube. The handle assembly has a first side connected to a second side, a slide trigger, a roller coupled to the bottom of the slide trigger with a dowel pin, a spray nozzle assembly, a magnet reservoir, and a magnet. The first side has an inclined ramp that runs along a length of the first side and extends into the second side above and beyond a seam that is formed by the connection of the two sides. The tube is within a channel in the handle assembly formed between the inclined ramp and the roller. When the roller is rolled toward the end of the ramp it pinches the flexible tube near the top of the inclined ramp.

A clamping mechanism (30) for clamping a flexible tube comprises two rotatable bobbins (22, 32), each with a tube-engaging surface portion (24) defining boundaries of: a free space through which a tube may extend. The shape of: the tube-engaging surface portion (24) changes around the bobbin circumference, such that axial rotation of the bobbins (22, 32) reduces the free space and thereby squeezes the tube. This allows the flow through the tube to be altered dependent on the rotation of: the bobbins.

A vacuum cleaner includes a floor nozzle, a handle, a hand nozzle that can be stored at least partially in the handle, and a backbone between the floor nozzle and the handle. The vacuum cleaner further includes a motor and dustcup on the backbone. Air flow conduits define a first air flow path between the dustcup and the floor nozzle and a second air flow path between the hand nozzle and the dustcup. A flow valve is operable between an open position and a closed position based on the position of the backbone relative to the floor nozzle. When the valve is in the open position, the first air flow path is open to the floor nozzle; when the valve is in the closed position, the first air flow path is closed to the floor nozzle, focusing suction to the hand nozzle.

A through-flow regulating device for a hose line of a medical infusion system having at least one rotationally movable clamping member which, in the mounted state, is operatively connected to the hose line and which can be manually adjusted relative to a hose section of the hose line in order to change a fluid through-flow rate of the hose section. Two clamping members mounted in a rotationally movable manner are provided, which flank a jacket of the hose section on opposite sides, and at least one clamping member has a circumferential contour which is formed, at least in sections, in an eccentric manner relative to an axis of rotation of the clamping member.