Quick coupling device between a pipe and a rigid element

• US 20010045749A1
• Filed: 04/03/2001
• Published: 11/29/2001
• Est. Priority Date: 04/04/2000
• Status: Abandoned Application

• Current Assignee: Gianluca Gnutti, Giovanni Camozzi
• Original Assignee: Gianluca Gnutti, Giovanni Camozzi
• Inventors: Camozzi, Giovanni, Gnutti, Gianluca
• Application Number:
  US09/825,162
• Publication Number:
  US 20010045749A1
• Time in Patent Office: Days
• US Class Current: 285/322
• CPC Class Codes: F16L 37/0925 with rings which bite into the wall of the pipe
• CPC Class Codes: F16L 37/0927 the wedge element being axially displaceable for releasing the coupling

Abstract

A quick coupling device between a pipe and a rigid element including an external body (12), a gripper (13) which can be positioned in a cavity (18) of the external body (12) within which one end of the pipe (22) is able to be placed, and a gasket (14), a ring-shaped projection (19) being provided in a middle area of the cavity (18), radially protruding inwards and suitable to hold one end of the gripper (13) in the cavity (18) sliding between the projection (19) and the bottom (24) where the gasket (14) is placed, in which the gripper (13) carries an additional pair of gaskets (15, 16) in an end portion placed in an area of the cavity facing an end opened outwards, suitable to ensure the seal of the gripper (13) both as regards an external surface of the inserted pipe (22) as well as an internal surface of the cavity (18).

Claims

1. A quick coupling device between a pipe and a rigid element including an external body (12), a gripper (13) which can be positioned in a cavity (18) of the external body 12) within which one end of a pipe (22) can be placed, and a gasket (14), a ring-shaped projection (19) being provided in a middle area of the cavity (18), radially protruding inwards and able to hold one end of said gripper (13) in said cavity (18) sliding between said projection (19) and said bottom (24) where said gasket (14) is placed, characterised in that said gripper (13) carries an additional pair of gaskets (15, 16), in an end portion placed in an area of said cavity facing an end opened outwards, suitable to ensure the seal of said gripper (13) both as regards an external surface of said inserted pipe (22) as well as an internal surface of said cavity (18).

2. A coupling device as in

claim 1

, characterised in that said gaskets (15, 16) are placed in a pair of ring-shaped housings (32, 33), one made on an external surface and the other on an internal surface of said gripper (13).

3. A coupling device as in

claim 1

, characterized in that said gripper (13) is cylindrical and includes a series of clamping teeth (26) identified by notches (27) directed according to the generating lines of the cylinder, each of said teeth (26) having pointed portions (28) facing radially inwards and in one of their free ends facing said gasket (14) having a recessed taper (29) and facing towards said pointed portions (28).

4. A coupling device as in

claim 1

, characterised in that said gripper in a middle portion that is placed in said cavity (18) towards an open end of the same cavity has at least one portion (31, 34) which acts as a guide.

5. A coupling device as in any one of the previous claims, characterised in that said gasket (14) is an O-ring (14).