Pipe junction holder

• US 4,092,036 A
• Filed: 12/15/1976
• Issued: 05/30/1978
• Est. Priority Date: 12/15/1975
• Status: Expired due to Term

• Current Assignee: Kabushiki Kaisha Suiken
• Original Assignee: Kabushiki Kaisha Suiken
• Inventors: Sato, Toshiyuki, Edo, Hideo
• Primary Examiner(s): Arola, Dave W.
• Application Number:
  US05/750,626
• Time in Patent Office: 531 Days
• Field of Search: 285/337, 285/403, 285/404, 285/374, 285/90, 285/421, 285/321, 403/314, 403/370, 403/374, 151/70, 85/155
• US Class Current: 285/337
• CPC Class Codes: F16L 21/04 in which sealing rings are compressed by axially-movable members for joints using a threaded member F16L19/07; quick acting couplings F16L37/00; devices for covering leaks from inside a pipe F16L55/162
• CPC Class Codes: F16L 21/08 with additional locking means F16L17/035, F16L17/04, F16L21/04, F16L21/06 take precedence; screwed joints F16L19/08; couplings of the quick-acting type F16L37/00
• CPC Class Codes: F16L 25/065 the locking means being actuated by radial screws

Abstract

A pipe junction holder which comprises a substantially annular body with which are formed a plurality of spaced clamping blocks comprising a vertical front wall, a pair of vertical side walls, and a lateral top wall which extends descendingly or downwardly away from the front wall and is formed with a non-threaded hole which is elliptical in shape and extends with an inclination relative to a longitudinal axis of a pipe on which the pipe junction holder is mounted. Within the hole is received a bolt having a shank with an integral annular flange formed therewith, in such a manner that an upper slanted surface of such an annular flange is slidable along a lower slanted surface of the top wall. In addition, on a threaded end portion of the bolt shank is engageably mounted a pipe pressing member including a pair of edges formed on its bottom end surface.

Claims

1. A pipe junction holder comprising:

a substantially annular body which includes a plurality of clamping blocks which are integral with said annular body and are disposed in spaced relation with one another, each of said clamping blocks comprising a hollow internal space defined by a front wall, a pair of side walls, and a top wall which has an inclined internal surface descending away from said front wall;

said top wall having a non-threaded through hole which is substantially elliptical in shape, having a longer diameter axis directed toward said front wall, and being inclined relative to a longitudinal axis of a pipe on which the pipe junction holder is mounted;

a plurality of bolts each of which has a bolt shank with an integral annular flange formed therewith, said bolt shank having a threaded portion at a lower part thereof and means for retaining the bolt shank within said hole;

said bolt shank passing through said hole in such a manner that it assumes the same inclined position as said hole and is freely rotatable therein and movable in the direction of said longer diameter axis of said hole;

an upper surface of said annular flange being in contact with said inclined internal surface of said top wall and being slidable along said inclined internal surface of said top wall;

a pipe pressing member which has an internally threaded hole being engageably mounted on said threaded portion of said bolt shank, said pipe pressing member being received within said internal hollow space of each of said clamping blocks in such a manner that it is movable together with said bolt shank substantially in the direction of said longer diameter axis of said hole, said internal hollow space prevents the pipe pressing member from rotating about said bolt shank;

a plurality of edges being formed on a bottom of said pipe pressing member, each of said edges being of a configuration that permits denting into a peripheral wall of a pipe on which the pipe junction holder is mounted; and

said pipe junction holder being adapted to be positioned adjacent a second pipe by means of a through hole in the annular body which is aligned with a through hole in an annular flange of a second pipe which may be secured together by means of a fixing bolt.

2. The pipe junction holder of claim 1, wherein said means for retaining the bolt shank is a snap ring mounted adjacent said bolt head.

3. The pipe junction holder of claim 1, wherein said top wall of said clamping block is inclined so as to descend away from said front wall of said clamping block.

4. The pipe junction holder of claim 1, wherein said plurality of edges are a pair of edges formed with the bottom end surface of said pipe pressing member, and a distance between said pair of said edges being at least larger than an external diameter of said bolt shank.

5. The pipe junction holder of claim 1, wherein said internally threaded hole of said pipe pressing member is a blind hole.

6. The pipe junction holder of claim 1, wherein said internally threaded hole of said pipe pressing member is a through hole.

7. The pipe junction holder of claim 1, wherein said pipe pressing member is disposed within said hollow internal space of said clamping block in such a manner that a pair of side walls of said pipe pressing member are in contact with a pair of said side walls of said clamping block in slidable relation with each other.

8. The pipe junction holder of claim 1, wherein a rear wall is formed with said clamping block, said rear wall being integral with said top wall and a pair of said side walls of said clamping block and extending therefrom in a direction substantially perpendicular to a longitudinal axis of a pipe on which the pipe junction holder is mounted.

9. The pipe junction holder of claim 1, wherein an annular projection is formed with said annular body, said annular projection extending from a bottom portion of said front wall in parallel with a longitudinal axis of a pipe on which the pipe junction holder is mounted.

10. The pipe junction holder of claim 1, wherein said through hole comprises a plurality of internally threaded through holes which are formed in said annular body, at least one of said internally threaded through holes being located between a pair of adjacent clamping blocks and extending in parallel with a longitudinal axis of a pipe on which the pipe junction holder is mounted, and a fixing bolt being inserted through each of said internally threaded holes for positioning said pipe junction holder adjacent a through hole in an annular flange of a second pipe.

11. The pipe junction holder of claim 1, wherein said means for retaining the bolt shank is a bolt head whose external diameter is at least larger than the shorter diameter of said elliptical hole.

12. A pipe junction holder to be mounted on a plug end portion of a first pipe for connecting said plug end portion with a socket end portion of a second pipe, said plug end portion being disposed within said socket end portion, and said socket end portion having an annular flange extending radially outwardly from an opening end wall of said socket end portion, said pipe junction holder comprising a substantially annular body which is conventionally bolted to said annular flange formed with said socket end portion of said second pipe, said annular body comprising a plurality of clamping blocks which are integral with said annular body and are disposed in spaced relation with one another, each of said clamping blocks comprising a hollow internal space defined by a front wall, a pair of side walls, and a top wall, said top wall having an internal inclined surface extending descendingly away from said front wall, said top wall having a non-threaded through hole formed therein which is substantially elliptical in shape so as to provide a longer diameter axis and a shorter diameter axis, said longer diameter axis being directed toward said front wall, said non-threaded through hole is formed so as to be inclined in such a manner that its inner end is disposed near said front wall while its outer end is disposed away from said front wall, a plurality of bolts each of which has a bolt head and a bolt shank which has an integral annular flange formed therewith, said bolt shank having a threaded portion at a lower part thereof, said bolt head projecting outwardly from said hole, said bolt shank passing through said hole in such a manner that it takes substantially the same inclined position as said hole, said bolt being held in position by a stopping means which prevents said bolt head from moving into said hole, said bolt shank being freely rotatable within said hole and movable in a direction of said longer diameter axis of said hole, an upper surface of said annular flange formed with said bolt shank being in contact and slidable relation with said inclined internal surface of said top wall, a pipe pressing member which has an internally threaded hole being mounted on said bolt shank with said internally threaded hole engaged with said threaded portion of said bolt shank, said pipe pressing member being disposed within said internal hollow space of each of said clamping blocks in such a manner that said pipe pressing member is movable together with said bolt shank substantially in the direction of said longer diameter axis of said hole of said top wall but is prevented from rotating about said bolt shank by said side walls of said clamping block, and a plurality of edges being formed with a bottom end surface of said pipe pressing member, each of said edges being of configuration that permits denting into a peripheral wall of said first pipe on which the pipe junction holder is mounted.

13. The pipe junction holder of claim 12, wherein said stopping means is a snap ring mounted adjacent said bolt head.

14. The pipe junction holder of claim 12, wherein said stopping means is a bolt head whose external diameter is at least larger than the shorter diameter of said hole elliptical in shape and formed in said top wall of said clamping block.

15. The pipe junction holder of claim 12, wherein said plurality of edges are a pair of edges formed with the bottom end surface of said pipe pressing member, and a distance between said pair of said edges is at least larger than an external diameter of said bolt shank.

16. The pipe junction holder of claim 12, wherein said internally threaded hole of said pipe pressing member is a blind hole.

17. The pipe junction holder of claim 12, wherein said internally threaded hole of said pipe pressing member is a through hole.

18. The pipe junction holder of claim 12, wherein said pipe pressing member is disposed within said hollow internal space of said clamping block in such a manner that a pair of side walls of said pipe pressing member is in contact with a pair of said side walls of said clamping block in slidable relation with each other.

19. The pipe junction holder of claim 12, wherein a rear wall is formed with said clamping block, said rear wall being integral with said top wall as well as a pair of said side walls of said clamping block and extending therefrom in a direction substantially perpendicular to a longitudinal axis of said first pipe on which the pipe junction holder is mounted.

20. The pipe junction holder of claim 12, wherein an annular projection is formed with said annular body, said annular projection extending toward said annular flange formed with said socket end portion from a bottom portion of said annular body substantially in parallel with a longitudinal axis of said first pipe, and a packing means is interposed between said annular projection of said annular body and said annular flange of said socket end portion of said second pipe.

21. The pipe junction holder of claim 12, wherein a plurality of internally threaded through holes are formed in said annular body, at least one of said internally threaded through holes formed in said annular body being located between a pair of adjacent clamping blocks and extending in parallel with a longitudinal axis of said first pipe, and a fixing bolt being inserted through each of said internally threaded through holes of said annular body as well as a hole formed in said annular flange of said socket end portion for connecting said pipe junction holder to said second pipe.