Grab hook

• US 20130001967A1
• Filed: 08/10/2012
• Published: 01/03/2013
• Est. Priority Date: 07/02/2011
• Status: Abandoned Application

• Current Assignee: Thomas M. Root
• Original Assignee: Thomas M. Root
• Inventors: Root, Thomas M.
• Application Number:
  US13/571,894
• Publication Number:
  US 20130001967A1
• Time in Patent Office: Days
• US Class Current: 294/82.1
• CPC Class Codes: B60P 7/0823 Straps; Tighteners
• CPC Class Codes: B66C 1/125 Chain-type slings chains in general F16G
• CPC Class Codes: B66C 1/34 Crane hooks

Abstract

The applicant describes grab hooks typically used with chains or other securements like cables, ropes, straps, and wires, etc. The grab hook includes a magnetic portion near the distal end of the hook that is positioned to magnetically engage a ferromagnetic portion of the securement while the securement is positioned in the throat of the hook. The magnetic connection between the grab hook and the securement prevents the securement from falling out of the throat while the securement is slack. The magnetic connection thus permits the user of the securement to position the other end of the slack securement and apply tension to the securement to, for example, secure, tow, or lift a load. The grab hook described has no latches or other moving parts in the throat and is therefore simpler to operate than conventional grab hooks with latches that close the throat.

Claims

1. A grab hook configured to be used along with a securement comprising at least one ferromagnetic portion that is spaced apart from a first end of the securement, comprising:

A) a proximal portion that is sized and configured to be mechanically connected to the first end of the securement;

B) a distal portion in which a permanent magnet is located in a magnet position that enables it to magnetically mate with the ferromagnetic portion in the securement; and

C) a throat portion formed between the proximal end and the distal end that is sized and configured to engage the securement at a location that is spaced apart from the first end of the securement.

2. The grab hook of claim 1, in which the securement comprises a chain having a plurality of links defining an inside length A.

3. The grab hook of claim 2, in which:

A. the plurality of links comprises a first link and a second link that includes the ferromagnetic portion;

B. the throat portion engages the first link; and

C. the permanent magnet is positioned in a location that is adapted to permit the permanent magnet to magnetically mate with the second link.

4. The grab hook of claim 3, in which:

A. the plurality of links in the chain defines an inside link length A;

B. the throat portion has an open end and a dosed end with the closed end being formed in an arc having a radius R measure from an origin; and

C. a distance C between the origin and the location of the magnet position is approximately 80% to 200% of the inside link length.

5. The grab hook of claim 4, in which the distance C is approximately the same as the inside link length A.

6. The grab hook of claim 3, in which the chain further comprises a third link that is located between the first link and the second link.

7. The grab hook of claim 4, in which the permanent magnet is located in a bore through the distal portion of the grab hook.

8. The grab hook of claim 4, in which:

A. the permanent magnet comprises a first slab and a second slab;

B. the first slab is embedded in a first cut out portion located in a first side of the distal portion of the grab hook; and

C. the second slab is embedded in a second cut out portion located in a second side of the distal portion of the grab hook.

9. The grab hook of claim 8, in which the first slab and the second slab are generally arc-shaped.

10. The grab hook of claim 1, in which the securement is a rope.

11. The grab hook of claim 1, in which the securement is a cable.

12. The grab hook of claim 1, in which the securement is a wire.

13. The grab hook of claim 1, in which the securement is a strap.