Holding tools for permanent magnets and methods to use the same
First Claim
1. A holding tool to handle a first permanent magnet in a stack of permanent magnets, comprising:
- a body including a holding portion, wherein the holding portion includes a hollow member made of ferromagnetic material and a coil surrounding the hollow member, wherein the hollow member and the coil form an electromagnet and the electromagnet is configured to, when energized in a first current direction, have a polarity opposite to a polarity of the permanent magnets in the stack; and
a switch disposed on the body and electrically connected to an electrical circuit of the electromagnet and configured to energize the electromagnet by connecting the electrical circuit and de-energize the electromagnet by disconnecting the electrical circuit;
wherein a current in the coil, size and shape of the hollow member are configured to generate a magnetic field to reduce a net pull force resulting from the first permanent magnet received in the holding portion and the electromagnet to facilitate movement of the holding tool loaded with the first permanent magnet away from the stack.
1 Assignment
0 Petitions
Accused Products
Abstract
A holding tool to handle a first permanent magnet in a stack of permanent magnets is provided. The holding tool comprises a body including a holding portion including an electromagnet, and a switch disposed on the body and electrically connected to an electrical circuit of the electromagnet and configured to energize the electromagnet by connecting the electrical circuit and de-energize the electromagnet by disconnecting the electrical circuit. The holding portion includes a hollow member made of ferromagnetic material and a coil surrounding the hollow member to form the electromagnet and the electromagnet is configured to, when energized in a first current direction, have a polarity opposite to a polarity of the permanent magnets in the stack.
22 Citations
14 Claims
-
1. A holding tool to handle a first permanent magnet in a stack of permanent magnets, comprising:
-
a body including a holding portion, wherein the holding portion includes a hollow member made of ferromagnetic material and a coil surrounding the hollow member, wherein the hollow member and the coil form an electromagnet and the electromagnet is configured to, when energized in a first current direction, have a polarity opposite to a polarity of the permanent magnets in the stack; and a switch disposed on the body and electrically connected to an electrical circuit of the electromagnet and configured to energize the electromagnet by connecting the electrical circuit and de-energize the electromagnet by disconnecting the electrical circuit; wherein a current in the coil, size and shape of the hollow member are configured to generate a magnetic field to reduce a net pull force resulting from the first permanent magnet received in the holding portion and the electromagnet to facilitate movement of the holding tool loaded with the first permanent magnet away from the stack. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
-
-
11. A holding tool to handle a first permanent magnet from a stack of permanent magnets, comprising:
-
a DC power supply, a holding portion to receive and hold the first permanent magnet, including; a hollow member made of ferromagnetic material and a coil surrounding the hollow member and forming an electrical circuit with the DC power supply, wherein the hollow member and the coil form an electromagnet and the electromagnet is configured to, when energized at a first current direction, have a polarity opposite to a polarity of the permanent magnets in the stack; a loading portion connected to the holding portion and configured to preload and hold a fastener above the holding portion; a handle portion connected to the loading portion and configured to apply a force to the fastener; and a switch disposed on the handle portion and configured to energize the electromagnet by connecting the electrical circuit and de-energize the electromagnet by disconnecting the electrical circuit. - View Dependent Claims (12, 13, 14)
-
Specification