Test tube screw cap and cap gripper assembly with magnet
EP4770947A1Pending Publication Date: 2026-07-08LABSOLUZ APS
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Patent Information
- Application Number
- EP2024765419
- Authority / Receiving Office
- EP · EP
- Patent Type
- Applications
- Current Assignee / Owner
- Priority Date
- 2024-05-07
- Filing Date
- 2024-09-02
- Publication Date
- 2026-07-08
AI Technical Summary
Technical Problem
Automated capping and de-capping of test tube screw caps often result in screw cap failure due to material mismatch between cap drivers and screw caps, leading to wear and potential contamination in laboratory settings.
Method used
A magnetic coupling pair is introduced between the screw cap and the cap gripper, utilizing a steel or iron core in the screw cap and a magnet in the cap gripper, allowing for secure attachment and rotation without relying on frictional contact.
Benefits of technology
This solution reduces material wear, enhances the reliability of screw cap attachment and detachment, and allows for more compact and efficient capper-decapper devices, reducing the risk of experiment failure due to screw cap issues.
✦ Generated by Eureka AI based on patent content.
Smart Images

Figure EP2024074467_06032025_PF_FP_ABST
Abstract
Herein are detailed a cap driver (1) for a test tube screw cap (2), a test tube screw cap, and an assembly thereof, wherein the connection between cap driver and the screw cap is formed by a magnetic link.
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