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US 5,341,845 AGranted
Control cartridge for a single-lever mixer fitting
AssigneeKwc AG
InventorHeinz Graber
Life of this patent
Estimating the term…
Abstract
A control cartridge includes a hot and a cold water feed connection. An outlet connection allows cold, hot or mixed water to be tapped. Actuation of the control cartridge is performed, for example, by a lever which can be inserted into a bore of a rotatable control bell. Only a rotational movement is required for the associated mixer fitting to be opened by this lever and for the required water temperature to be set.
Claims30
A control cartridge for a single-lever mixer fitting having a cold water connection, a hot water connection and an outlet connection disposed in a housing comprising:
- a first control disk fixed to the housing, a second control disk movably disposed in the housing relative to the first control disk, and an actuating element attached to the second control disk, said first control disk having a first inlet aperture for communicating with the cold water connection, a second inlet aperture for communicating with the hot water connection, and an outlet aperture for communicating with the outlet connection, the second control disk having an inlet aperture and an outlet aperture, said second control disk disposed in the housing so as to be rotatable solely about a center axis, both the first and second inlet apertures of the first control disk and the inlet aperture of the second control disk disposed on a first common circular line, the outlet apertures of the first and second control disks disposed on a second common circular line and distributed on said first and second disks so that when the second control disk is rotated in an opening direction from a closed position, successively one of the first and second inlet apertures in the first disk is uncovered due to movement of the inlet aperture in the second disk until water flow through said one inlet aperture is freed up to a maximum water-flow volume, after which the other of the first and second inlet apertures in the first disk is additionally uncovered, and then said one of the first and second inlet apertures in the first disk is covered by the second disk until water flow through said one inlet aperture is throttled down to approximately zero water-flow volume.
A control cartridge for selectively communicating hot and cold water supplies with a water outlet, comprising:
- a first control disk having opposite surfaces and a first inlet aperture extending between said surfaces for communication with a cold water supply, a second inlet aperture extending between said surfaces for communication with a hot water supply, and an outlet aperture extending between said surfaces for communication with a water outlet;
- a second control disk having opposite surfaces and located relative to said first control disk so that one of the surfaces of the first control disk contacts one of the surfaces of the second control disk, said second control disk being rotatable relative to said first control disk and having an inlet aperture extending between said surfaces for selective communication with the first and second inlet apertures of the first control disk, and an outlet aperture extending between said surfaces for selective communication with the outlet aperture of said first control disk;
- a mixing chamber between said inlet and outlet apertures of said second control disk;
- and
- an actuating element attached to the second control disk for rotating said second control disk;
- wherein only rotation of said second control disk causes said second control disk inlet aperture to be selectively communicated with at least one of the first and second inlet apertures of the first control disk, and said second control disk outlet aperture to be selectively communicated with the outlet aperture of said first control disk so that temperature and water-flow volume of water reaching said water outlet is controlled solely by rotation of said second control disk in a single plane.
3 more elements
Dependencies are inferred from the claim text.