Patent ID: 8936281
Filing Date: 2015-01-20
Classification: F16L,Y10T

Abstract:
1. A press fitting for a plastic or a plastic/metal compound tube, comprising: a fitting body including a support shell configured for mounting thereon one end of a tube to be connected; a pressing sleeve which is plastically deformable for pressing against the support shell and the end of the tube having been mounted on the support shell; an abutment element continuously surrounding the pressing sleeve and including an abutment face configured to be abutted by a pressing tool when plastically deforming the pressing sleeve; and at least one substantially U-shaped press indication portion including two legs projecting from the abutment face of the abutment element and a base portion connecting the two legs and defining a space between the two legs and the base portion, each of the legs having a guidance groove formed therein, the guidance grooves defining a weakening zone, the press indication portion extending along an outside of the pressing sleeve into an acting region within which the pressing tool interacts with the pressing sleeve during the deformation of the pressing sleeve, said press indication portion being separable at the weakening zone by the pressing tool during the deformation of the pressing sleeve, wherein the at least one press indication portion includes, on its outer side, which faces away from the pressing sleeve and faces away from the abutment face, an inclined surface having an inclination angle along a longitudinal axis of the pressing sleeve over which the pressing tool can be axially moved for contacting the abutment element, wherein the guidance grooves allow for axial fixation of the pressing sleeve relative to the pressing tool by accommodating a guidance projection of the pressing tool during the deformation of the pressing sleeve, and wherein the press indication portion separates from the abutment element at the guidance grooves upon deformation by the pressing tool.