Pipe joint

• US 5,658,021 A
• Filed: 08/28/1995
• Issued: 08/19/1997
• Est. Priority Date: 09/30/1994
• Status: Expired due to Fees

• Current Assignee: Benkan Corporation
• Original Assignee: Benkan Corporation
• Inventors: Maruhashi, Yasumi, Fukuda, Nobuhisa, Kanazawa, Masao, Matsumoto, Shigeyuki, Fuse, Kenji, Miyatani, Kenji, Yabe, Yasuo, Motoda, Mitsuaki, Shibata, Tsuneyoshi, Sunaga, Minoru
• Primary Examiner(s): Nicholson, Eric K.
• Application Number:
  US08/519,706
• Time in Patent Office: 722 Days
• Field of Search: 285/367, 285/112, 285/373, 285/364, 285/365, 285/366
• US Class Current: 285/112
• CPC Class Codes: F16L 17/04 with longitudinally split or divided sleeve
• CPC Class Codes: F16L 21/06 with a divided sleeve or ring clamping around the pipe-ends flanged joints F16L23/00; couplings of the quick-acting type F16L37/00

Abstract

A pipe joint for connecting water supply pipe together and which utilizes compression seals between the pipe and the joint, and is comprised of a holding housing having a band body that surround a seal ring and a holding ring. A locking bolt is threadably tightened onto the holding housing. The seal ring is embedded and sealed within outside surface of both ends of the separated pipes after the locking bolt is threadably tightened. The holding ring is positioned to engage and become fully engaged within the groove at each of outside of the separated pipes, and hold the separation pipes against being easily separated after the locking bolt is threadably tight-end onto the holding housing.

Claims

1. A slip on pipe joint comprising:

an annular flexible compressible ring adapted and constructed to bridge separated end portions aligned ends of two pipes of generally like diameter;

a segmented annular ring disposed axially at each side of said annular flexible compressible ring;

each of said segmented annular rings having a groove facing outwardly radially,

said grooves of said segmented annular rings having an annular spring means whereby to draw said segments together to thereby decrease the diameter of said segmented annular ring;

a band having two end portions and being radially inwardly facing U-shaped in cross section,

said band being wrapped about said compressible ring and said segmented annular rings;

each of said end portions of said band being payed about horizontally displaced members;

each of said members having threaded aligned holes therethrough,

each of said member being connected by a threaded screw means adapted and constructed to draw said members together when rotated in one direction and to move said members apart when rotated in the other direction whereby to move said end portions of said band together or apart to thereby tighten said band about said compressible ring about the separated end portions of said pipes.

2. The pipe joint according to claim 1 wherein there is included an annular slide washer at each side of said compressible ring and interposed between said compressible ring and each of said segmented annular rings;

said slide washer having a bore diameter the same as the inner diameter of the compressible ring and a bore diameter the same as the inner diameter of the segmented annular ring,

said slide washer having an outer diameter less than the outer diameter of the compressible ring and less than the outer diameter of the segmented annular ring.

3. The pipe joint according to claim 1 wherein said segmented annular rings include a plurality of arcuate segments,

at least two of the adjacent segments are arcuately spaced from each other

each of said spaced adjacent segments being fitted with an extending manually manipulative lever adapted and constructed to hold said segmented annular rings in a position whereby said pipe joint may slipped over the to-be-connected end portions of said separated pipes.

4. The pipe joint according to claim 3 wherein said levers are restrained from being manually manipulatively moved by stop means.

5. The pipe joint according to claim 3 wherein there is included an annular slide washer at each side of said compressible ring and interposed between said compressible ring and each of said segmented annular rings;

said slide washer having a bore diameter the same as the inner diameter of the compressible ring and a bore diameter the same as the inner diameter of the segmented annular ring,

said slide washer having an outer diameter less than the outer diameter of the outer diameter of the compressible ring and less than the outer diameter of the segmented annular ring.