	US 12,234,929 B2
	Quick connection clamping hoop
Tonghu Zhang, Weifang (CN); Chengfei Pan, Weifang (CN); and Ming Li, Weifang (CN)
Assigned to SHANDONG LEDE MACHINERY CO., LTD, Weifang (CN)
Filed by SHANDONG LEDE MACHINERY CO., LTD, Weifang (CN)
Filed on Dec. 7, 2023, as Appl. No. 18/532,902.
Application 18/532,902 is a division of application No. 17/317,492, filed on May 11, 2021.
Application 17/317,492 is a continuation of application No. PCT/CN2019/124153, filed on Dec. 10, 2019.
Claims priority of application No. 201811535029.4 (CN), filed on Dec. 14, 2018.
Prior Publication US 2024/0102588 A1, Mar. 28, 2024
Int. Cl. F16L 17/04 (2006.01); F16L 21/06 (2006.01)

CPC F16L 17/04 (2013.01) [F16L 21/065 (2013.01)]

2 Claims

1. A quick connection clamping hoop, comprising an upper clamping hoop body and a lower clamping hoop body that are both in a semi-annular shape,

two upper convex ribs being disposed on an inner annular face of the upper clamping hoop body at intervals, the two upper convex ribs being radially inward convex and extending in a circumferential direction of the inner annular face, and an upper sealing ring groove located between the upper convex ribs being disposed on the inner annular face;

and two lower convex ribs being disposed on an inner annular face of the lower clamping hoop body at intervals, the two lower convex ribs being radially inward convex and extending in a circumferential direction of the inner annular face, and a lower sealing ring groove located between the lower convex ribs being disposed on the inner annular face;

wherein the upper clamping hoop body and the lower clamping hoop body each have one end as a plug connecting end and the other end as a connecting end;

connecting ends of the upper clamping hoop body and the lower clamping hoop body each are provided with a lug, and the connecting ends of the two are connected together via a bolt passing through lugs;

plug connecting ends of the upper clamping hoop body and the lower clamping hoop body are connected together via a plug connecting mechanism disposed at the plug connecting ends of the two;

and after end-to-end connections, the upper clamping hoop body and the lower clamping hoop body are capable of enclosing central space for receiving a pipe, and a sealing ring installed in the upper and lower sealing ring grooves is disposed in the central space;

the sealing ring comprises a rubber ring body, two ends of the rubber ring body each are provided with an end wall that is integrally connected with the rubber ring body and is provided with an axial through hole in a central part, an inner edge of the end wall is axially inward convex to form a ring lip, and the sealing ring further comprises a retaining ring not directly integrally connected with the rubber ring body;

a plurality of bumps are annularly disposed on an inner wall face of the rubber ring body, sockets are disposed on the bumps, and the retaining ring is inserted in the sockets.