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Thermostatic cartridge for mixer taps

  • US 6,557,770 B2
  • Filed: 03/13/2002
  • Issued: 05/06/2003
  • Est. Priority Date: 03/15/2001
  • Status: Expired due to Fees
First Claim
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1. A thermostatic cartridge with ceramic discs for a fluid tap, of the quarter turn type with concentric controls, comprising a regulating valve joined to a movable portion of a thermostatic element and first and second flow control discs coupled on one of their faces, wherein said first disc has two internal transverse hot fluid passages, extending approximately in circumferential arcs of approximately equal radiuses, separate and approximately end to end, two internal transverse cold fluid passages, extending approximately in circumferential arcs of approximately equal radiuses, separate and approximately end to end, and an internal groove opening onto said face of said disc which is not coupled to said second disc and the base of which forms a seat for said regulating valve and is in communication with one of said cold fluid passages, and said second disc has two internal transverse passages for hot fluid and cold fluid respectively, extending approximately in circumferential arcs, said second disc being rotatable relative to said first disc between an open position, in which said hot fluid passage of said second disc links said hot fluid passages of said first disc and said cold fluid passage of said second disc links said cold fluid passages of said first disc, and a closed position, in which said hot fluid passage of said second disc is isolated from at least one of said hot fluid passages of said first disc and said cold fluid passage of said second disc is isolated from at least one of said cold fluid passages of said first disc.

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