His one claim recites applying a ferrofluid to the wrench end, or using a magnetic insert.
...and a rubber handle! Awfully restrictive one-claim patent. Proof that if one is determined, one can get a patent on almost anything. Whether that patent is
worth anything is a different matter...
United States Patent 8,863,622
Kingsberry October 21, 2014
Magnetic wrench systems
Abstract
Magnetic Wrench can provide people with a convenient way to install and remove nuts and bolts with a wrench without the nut or bolt slipping out of the wrench and falling onto the floor. This unique product can comprise a wrench with built-in, internal magnets on the openings on both ends. The magnets comprise three small washers placed around the wrench's openings, or a magnetic strip that can follow the curve of the opening. This concept can be applied to both metric and standard wrenches, as well as various shapes and sizes of wrenches. The exact specifications, materials used, and method of use of Magnetic Wrench may vary upon manufacturing.
...
What is claimed is new and desired to be protected by Letters Patent is set forth in the appended claims:
1. A magnetic wrench system comprising: a magnetic wrench including; a handle member having; a proximate end; and a distal end; a first head having an inner surface; a second head having an inside surface; at least one first magnetic insert member; and at least one second magnetic insert member; wherein said handle member is defined in length by said proximate end and said distal end; wherein said first head is located on said handle member; wherein said second head is located on said handle member; wherein said handle member provides a lever whereby a fastener is able to be turned by said first head, said first head able to suitably grip said fastener for rotation about an axis; wherein said handle member, said first head, and said second head are treated with ferrofluid; wherein said handle member further comprises a rubber sleeve; wherein said handle member is alternately able to turn said fastener using said second head, said second head able to suitably grip said fastener for rotation; wherein said first magnetic insert member is affixed into said inner surface of said first head; wherein said second magnetic insert member is affixed into said inside surface of said second head; wherein said first magnetic insert member and said second magnetic insert member comprises rare earth magnets; wherein said rare earth magnets comprise a magnetic field in excess of about 1.4 teslas; and wherein said first magnetic insert member and said second surface insert member provide magnetic attraction between said fastener and said magnetic wrench such that said magnetic wrench is able to better hold and grip said fastener when said fastener is being manipulated during rotational torquing.
