Threaded component and device for connecting piping
AssigneeTI Automotive (Heidelberg) GmbH
InventorsSebastian Abbott, Uwe Fiedler, Andreas Sausner
Life of this patent
Estimating the term…
Abstract
A threaded component for connecting piping employed on motor vehicles includes a thread formed thereon and at least one unthreaded, contacting surface. A first coating having a first coefficient of friction is disposed on at least a portion of the thread, and a second coating having a second coefficient of friction is disposed on at least a portion of the unthreaded, contacting surface(s) of the threaded component. The first coefficient of friction is greater than the second coefficient of friction. In an embodiment an anti-corrosion coating is provided between the coatings and the component.
Claims44
A threaded component for connecting piping employed on motor vehicles, comprising:
- a thread formed on said threaded component;
- at least one unthreaded, contacting surface formed on said threaded component;
- first coating having a first coefficient of friction disposed on at least a portion of said thread;
- a second coating having a second coefficient of friction disposed on at least a portion of said at least one unthreaded, contacting surface;
- wherein said first coefficient of friction is greater than said second coefficient of friction and the first coefficient of friction falls within the range 0.15-0.5.
A device for connecting piping employed on motor vehicles, comprising:
- a connector;
- a pipe;
- and
- a threaded component connected to said pipe and threadably connected to said connector, said threaded component comprising:
- a thread formed on said threaded component;
- at least one unthreaded, contacting surface formed on said threaded component;
- a first coating having a first coefficient of friction disposed on at least a portion of said thread;
- a second coating having a second coefficient of friction disposed on at least a portion of said at least one unthreaded, contacting surface;
- wherein said first coefficient of friction is greater than said second coefficient of friction.
A threaded component for connecting piping employed on motor vehicles, comprising:
- a thread formed on said threaded component;
- at least one unthreaded, contacting surface formed on said threaded component;
- a first coating having a first coefficient of friction disposed on least a portion of said thread;
- a second coating having a second coefficient of friction disposed on at least a portion of said at least one unthreaded, contacting surface;
- wherein said first coefficient of friction is greater than said second coefficient of friction and wherein the first coefficient of friction falls within the range 0.25-0.4.
A method for installing a fitting, comprising:
- installing a screw fitting having a pipe passing through an opening formed in the screw fitting into a threaded opening, wherein the pipe forms a flare at an end thereof, and wherein the screw fitting has an end surface disposed adjacent to the flare;
- applying a torque to the screw fitting, thus causing the end surface of the screw fitting to abut an underside of the flare
- exerting an axial, compressive force on the underside of the flare;
- transmitting a torque to the underside of the flare;
- retaining the torque applied to the screw fitting by providing a first coating covering at least a portion of a threaded section of the screw fining;
- and
- reducing the torque transmitted to the underside of the flare by providing a second coating covering at least a portion of the end surface of the screw fitting abutting the underside of the flare.
Dependencies are inferred from the claim text.