Corrosion protection core for pipe ends, corrosion protection structure for pipe joints, and corrosion protection construction method for pipe joints.
The pipe end corrosion protection core with a tapered design and rubber material addresses manufacturing and installation challenges, enabling easy and secure fitting to both inner and outer pipe surfaces for effective corrosion prevention.
JP2026079732APending Publication Date: 2026-05-15SK KAWANISHI CO LTD
View PDF 2 Cites 0 Cited by
Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- SK KAWANISHI CO LTD
- Filing Date
- 2025-10-08
- Publication Date
- 2026-05-15
AI Technical Summary
Technical Problem
Existing pipe end corrosion protection solutions are cumbersome to manufacture and lack workability due to issues such as increased diameter requirements and difficulty in installation, particularly in confined spaces.
Method used
A pipe end corrosion protection core with a cylindrical portion that tapers inward, a core portion that tapers outward, and a connecting portion with twice the wall thickness of the cylindrical portion, made of rubber, allowing for easy molding, installation, and secure fitting to the pipe end.
Benefits of technology
Facilitates easy manufacturing and improves workability by ensuring precise molding without air bubbles, easy installation, and secure adhesion to both inner and outer pipe surfaces, enhancing corrosion protection.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure 2026079732000001_ABST
Abstract
To provide a pipe end corrosion protection core, a pipe end corrosion protection structure for pipe joints, and a pipe end corrosion protection construction method for pipe joints that are easy to manufacture and have excellent workability. [Solution] The device is molded from a rubber material and has a cylindrical portion 2 that adheres to the outer circumferential surface of the pipe end, a core portion 3 that adheres to the inner circumferential surface of the pipe end, and a connecting portion 4 that protrudes outward from the base end 31 of the core portion 3 and connects to the base end 21 of the cylindrical portion 2. The cylindrical portion 2 has a tapered shape in which the inner diameter R1 increases from the base end 21 to the tip end 22. The outer diameter R3 of the core portion 3 is larger than the inner diameter of the pipe. The inner diameter R1 of the tip end 22 of the cylindrical portion 2 is smaller than the outer diameter of the pipe. The core portion 3 and the connecting portion 4 are formed with the same wall thickness t2, and the wall thickness t2 is at least twice the wall thickness t1 of the cylindrical portion 2. The connecting portion 4 and the base end 21 of the cylindrical portion 2 cover the pipe end surface of the pipe end.
Need to check novelty before this filing date? Find Prior Art