US 9,810,356 B2
Separation preventing device of fluid pipe, and pipe joint
Yoshinori Maeda, Tokyo (JP); Atsushi Sato, Tokyo (JP); and Toshihiko Ogata, Tokyo (JP)
Assigned to COSMO KOKI CO., LTD., (JP); and KUBOTA CORPORATION, (JP)
Filed by COSMO KOKI CO., LTD., Tokyo (JP); and KUBOTA Corporation, Osaka (JP)
Filed on Mar. 9, 2015, as Appl. No. 14/642,276.
Claims priority of application No. 2014-046989 (JP), filed on Mar. 10, 2014; application No. 2014-046990 (JP), filed on Mar. 10, 2014; application No. 2014-046991 (JP), filed on Mar. 10, 2014; and application No. 2014-047496 (JP), filed on Mar. 11, 2014.
Prior Publication US 2015/0252926 A1, Sep. 10, 2015
Int. Cl. F16L 19/00 (2006.01); F16L 23/02 (2006.01); F16L 23/00 (2006.01); F16L 23/024 (2006.01)
CPC F16L 23/02 (2013.01) [F16L 23/003 (2013.01); F16L 23/024 (2013.01)] 27 Claims
OG exemplary drawing
 
1. A separation preventing device that prevents separation of a fluid pipe in a pipe axis direction, the separation preventing device comprising:
a main body member that is externally fitted to an outer peripheral surface of the fluid pipe and has a recess portion facing the outer peripheral surface;
a locking member that is housed in the recess portion in a tiltable manner and is able to bite into the outer peripheral surface of the fluid pipe;
a pressing member that is provided in the main body member and presses the locking member so as to bite into the outer peripheral surface of the fluid pipe; and
an interposition member interposed between the locking member and the pressing member,
wherein the pressing member is configured to press a center portion in the circumferential direction of the locking member; the interposition member is equipped with a tapered surface coming into contact with an outer surface of the locking member, and is housed in the recess portion in a state of having an acceptable movement and tilting value in the pipe axis direction of the fluid pipe; and a gap portion which permits movement and tilting of the locking member is formed between an end surface on a rear side of the center portion of the locking member and a side wall surface of the recess portion.