In-line security hook

a hook and security technology, applied in the field of security hooks, can solve the problems of ineffective design and inability to engage the s-hook, and achieve the effect of preventing inadvertent disengagement of the chain

Inactive Publication Date: 2005-07-14
U HAUL INT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0007] The second bend of the security hook has a free end that preferably does not extend beyond the first bend. In use, the security hook is engaged with a chain connected to a trailer. The chain is received in the chain receiving portion of the hook. The chain receiving portion is preferably dimensioned to limit the movement of the chain therein and to prevent inadvertent disengagement of the chain from the security hook. When installed, the security hook ensures that the trailer remains connected to the towing vehicle.

Problems solved by technology

However, during vehicle operation, vibrations from road conditions or engine operation can cause the S-hook to disengage.
However, such a design is not always effective.

Method used

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  • In-line security hook
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Examples

Experimental program
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Embodiment Construction

[0005] A security hook is disclosed having a main shaft, a chain receiving portion extending from a first end of the main shaft and a first bend extending from a second end of the main shaft. The chain receiving portion and first bend are preferably, but not necessarily, positioned on the same side of the main shaft and are substantially in-line with each other. A second bend extends from the first bend in the opposite direction of the first bend. The security hook, including the main shaft, the chain receiving portion and the first and second bends, is preferably made of an integral metal bar capable of withstanding relatively high forces.

[0006] In one embodiment of the invention, the first and second bends each have a straight portion and the second bend extends from the straight portion of the first bend. The straight portions are substantially parallel to the main shaft. The chain receiving portion also includes a straight portion that is substantially parallel to the main shaf...

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PUM

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Abstract

A safety hook including a main shaft, a chain receiving portion disposed at a first end of the main shaft, a first bend disposed at a second end of the main shaft, and a second bend depending from the first bend. The chain receiving portion and the first bend are positioned on the same side as the main shaft and are substantially in-line with each other. The second bend bends in substantially the opposite direction of the first bend and has a terminal end that does not extend beyond the first bend.

Description

FIELD OF THE INVENTION [0001] The present invention relates to security hooks, and more particularly to a security hook having in-line formed ends to resist unplanned disengagement from a chain or the like. BACKGROUND OF THE INVENTION [0002]“S” hooks have been widely used as security chain end hooks, particularly in the trailer industry. In the trailer industry, chains with S-hooks are used as added security between the trailer and a towing vehicle. In use, these hooks may be engaged in a hole or slot in a vehicle frame, over the flanged edge of a channel-type frame, or with another chain. Oftentimes, the security chain hook is routed through a vehicle tie-down loop or around a frame member with the end hook then engaged over or through a link of the security chain. However, during vehicle operation, vibrations from road conditions or engine operation can cause the S-hook to disengage. [0003] Different designs have been proposed to prevent disengagement of the S-hook during vehicle ...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): A44B13/00B60D1/18B60D1/28B60D1/58
CPCB60D1/18Y10T24/3484Y10T24/3485B60D1/28
Inventor DOLAN, ROBERT A.SIMPSON, DAVID L.
Owner U HAUL INT
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