Back to results
US 3,976,314 AGranted
Tube coupler
AssigneePaul M. Hankison
InventorCharles H. Graham
Life of this patent
Estimating the term…
Abstract
A coupler or fitting for connecting ductile tubes or pipes includes a coupler body having one or more ports therein, and a ferrule which is friction-fitted within each port, the ferrule having a radially-inward flaring lip for biting into and locking a tube inserted therein and for creating a seal between the tube and the body, and a radially-outward flaring lip for biting into and locking the ferrule within the body.
Claims5
A coupler for a ductile tube comprising:
- a. a body having at least two generally cylindrical ports therein;
- b. a generally cylindrically-shaped thin-walled ferrule, said ferrule having a substantially uniform wall thickness throughout the entire length thereof and insertable within at least one port of said body, the outside surface of said ferrule forming a snug, friction fit with the port wall to sealingly engage the port wall;
- c. said ferrule having a single radially-inward flaring continuous circumferential lip at the inner extremity thereof, and a radially-outward flaring continuous circumferential lip at the outer extremity thereof;
- d. said radially-outward flaring lip biting into the port wall when inserted therein to retain it in place and prevent dislocation therefrom;
- and
- e. said radially-inward flaring lip biting into the exterior surface of the tube when inserted therein, said lip locking the tube within said body and providing a fluid seal between the tube and said body.
3 more elements
Dependencies are inferred from the claim text.