Quick-connect coupling having heads unified with pipe

• US 4,722,555 A
• Filed: 03/20/1986
• Issued: 02/02/1988
• Est. Priority Date: 03/20/1986
• Status: Expired due to Fees

• Current Assignee: Apostolos K. Soultatis
• Original Assignee: Apostolos K. Soultatis
• Inventors: Soultatis, Apostolos K.
• Primary Examiner(s): Callaghan, Thomas F.
• Application Number:
  US06/842,127
• Time in Patent Office: 684 Days
• Field of Search: 285/5, 285/6, 285/284, 285/297, 285/311
• US Class Current: 285/5
• CPC Class Codes: F16L 37/20 Joints tightened by toggle-action levers

Abstract

A quick-connect pressurizable coupling assembly having mating male and female head parts each integrally attached to an outwardly flared pipe end by being cast around the pipe. The male head part is provided at its forward end with an angled sealing surface having an adjacent annular radial outward projection. The female part is provided at its forward end with an annular shaped inner recess for retaining a resilient sealing ring and it also has an annular outer curved surface. A clamping unit encircles the female part curved surface, and is equipped with an annular clamping ring having at least one short hook and at least one long hook having a handle grip and pivotally attached to the clamping ring. The two hooks are adapted for attachment to the annular radial projection of the male part, thereby providing for the male and female head parts to be conveniently connected together to provide a pressurizable joint for the pipes.

Claims

1. A quick-connect coupling assembly having mating head parts each integrally attached to a pipe, comprising:

(a) a male head part integrally attached to an end of a pipe, said male part having located at its forward end a radially outwardly extending annular ring having an annular recess, said pipe end being flared radially outwardly and said male head part being integrally cast around the flared pipe end;

(b) a female head part integrally attached to an end of a pipe, said female part having located at its forward end an inner curved recess adapted for receiving an annular seal ring and having a curved outer surface located rearwardly from the inner recess, said pipe end being flared radially outwardly and said female head part being integrally cast into the flared pipe end;

(c) a resilient circular-shaped seal ring provided in the inner curved recess of said female head part for sealing against an outer surface of said male head part; and

(d) a clamping unit encircling said female head part and adapted to mate with the curved outer surface of said female head part, said clamping unit having a clamp ring and at least one short hook and at least one long hook having a handle grip pivotally attached to the clamp ring, said hooks being adapted for engaging the annular recess of said male head part, whereby said male head part and said female head part can be quickly and sealably attached together to provide a coupling assembly.

2. A coupling assembly according to claim 1, wherein said male head part forward end is angled at 30°

-45°

with the axial center line of the male part.

3. A coupling assembly according to claim 1, wherien said male head part and female head part are each made of cast aluminum.

4. A coupling assembly according to claim 1, wherein the resilient seal ring is composed of an elastomer material.

5. A coupling assembly according to claim 1, wherein said long hook is clamped to said male head part by a toggle device.

6. A coupling assembly according to claim 1, wherein said clamp ring has located on its outer surface a plurality of radially oriented ribs.

7. A coupling assembly according to claim 1, wherein a side connection is provided by a fitting having an annular rim being attached into the male head part by casting the head part around the fitting.

8. A quick-connect coupling assembly having mating head parts each integrally attached to a pipe, comprising:

(a) a male head part integrally cast around an outwardly flared end of a pipe, said male part having located at its forward end a radially outwardly extending annular ring having an annular recess;

(b) a female head part integrally cast around an outwardly flared end of a pipe, said female part having located at its forward end an inner curved recess adapted for receiving an annular seal ring and having a curved outer surface located rearwardly from the inner recess;

(c) a resilient circular-shaped seal ring provided in the inner curved recess of said female head part for sealing against an outer surface of said male head part;

(d) a clamping unit encircling same female head part and adapted to mate with the curved outer surface of said female head part, said clamping unit including a clamp ring having located on its outer surface a plurality of radially oriented ribs, and at least one short hook and at least one long hook having a handle grip pivotally attached to the clamp ring, said hooks being adapted for engaging the annular recess of said male head part and said long hook is clamped to said male head part by a toggle device; and

(e) an annular-shaped stopper ring attached to said female head part rearwardly of the clamping unit, whereby said male head part and said female head part can be quickly and sealably attached together to provide a coupling assembly.