Apparatus for Application of a Magnetic Field to a Sample

Simple SummaryContent extracted from patent full text and abstract with AI.

This invention is an apparatus designed to apply a strong and homogeneous magnetic field to a sample, especially an elongated one where the ends are not accessible (e.g., tree trunks or pipes). The apparatus consists of at least two magnetic ring-like bodies that are rotatable relative to each other and segmented so they can be opened, placed around, and closed onto the sample. By adjusting the rotation, the magnetic fields can be aligned or neutralized, allowing for easier opening and closing with minimal force. The structure allows precise control of the magnetic field within the sample region, making it suitable for magnetic resonance techniques such as NMR or EPR.

Use CasesContent extracted from patent full text and abstract with AI.

• Non-invasive inspection of tree trunks for internal defects using magnetic resonance.
• In-situ inspection of pipelines (without end access) for structural integrity or defects.
• Mobile or portable NMR/EPR systems for field applications in forestry, agriculture, or material science.
• Materials testing of long or inaccessible cylindrical samples, e.g., concrete columns.
• Scientific research requiring high-homogeneity magnetic fields around objects that cannot be moved or whose ends are not accessible.

BenefitsContent extracted from patent full text and abstract with AI.

• Enables magnetic field application to elongated objects with inaccessible ends, which traditional designs cannot do.
• Rotatable, segmented magnetic rings allow for easy opening, closing, and adjustment with minimal effort or risk of injury.
• Highly homogeneous and strong magnetic fields can be achieved, improving accuracy and reliability of NMR/EPR investigations.
• Portable and adaptable design is suitable for field work and complex geometries.
• The use of permanent magnets means no ongoing power supply is necessary for the static field, reducing operating costs and complexity.
• Safety is improved as magnetic forces are minimized during handling by neutralizing the field during assembly/disassembly.

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Patent Abstract

Disclosed is an apparatus for application of a magnetic field to a sample, in particular an elongated sample. At least in places, the apparatus has magnetic bodies which are arranged such that they can rotate with respect to one another and have, and leave open, a common access opening for the sample. In particular, this allows the apparatus to be applied to an elongated sample whose ends are not accessible. As a result of the bodies being arranged such that they can rotate with respect to one another, the magnetic fields of the bodies can be adjusted with respect to one another before the apparatus is opened and closed, so as to minimize the magnetic field in the common access opening. In consequence, only small magnetic interaction forces need be overcome during opening and closing.