# US 7,607,707 B2 · Load hook

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- Number: US 7,607,707 B2
- Document ID: US7607707B2
- Status: Granted
- Kind: B2
- Application number: 11/615,084
- Filed: 2006-12-22
- Published: 2007-08-02
- Granted: 2009-10-27
- Earliest claimed: 2005-12-24
- Assignees: Demag Cranes & Components GmbH
- Inventors: Ralf Eising; Udo Gersemsky; Uwe Lichtenvort; Thilo Walloschek
- Web page: https://patentgrep.com/patent/US7607707B2

## CPC

- B66C 1/34: Crane hooks
- B66C: CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES ({specially adapted for lifting invalids A61G7/10;} rope, cable, or chain winding mechanisms, braking or detent devices therefor B66D; specially adapted for nuclear reactors G21)

## Abstract

The invention concerns a load hook with a hook fastened to a hook tackle that can be safely handled. A cover region is arranged at least partially between the hook tackle and the hook, such that the hook is covered starting at the outer contour of the hook tackle.

## Claims

### Claim 1

A load hook, comprising:
a hook fastened to a hook tackle, wherein the hook is stationary relative to the hook tackle and the hook tackle comprises an outer contour;
a cover region at least partially arranged between the hook tackle and the hook to cover a portion of the hook starting at the outer contour of the hook tackle;
wherein the cover region adjoins a lower end of the hook tackle facing the hook in the manner of a ring, said cover region covering the hook in the region of a back side of the hook opposite an opening of the hook, including a hook mouth securement arranged in the opening region of the hook; and
wherein the length of the cover region increases from the hook mouth securement to the back side of the hook, in the lengthwise direction of the load hook.

### Claim 2 (depends on 1)

The load hook per claim 1, wherein the cover region and the hook tackle form a single piece.

### Claim 3 (depends on 2)

The load hook per claim 2, wherein the cover region tapers, starting at the outer contour of a lower end of the hook tackle in the region of the hook, toward the outer contour of the hook at the back side of the hook opposite the opening of the hook.

### Claim 4 (depends on 3)

The load hook per claim 3, wherein the end of the cover region away from the hook tackle dips at least partly into a recess-like constriction arranged in the back side away from the opening of the hook.

### Claim 5 (depends on 1)

The load hook per claim 1, wherein the end of the cover region away from the hook tackle dips at least partly into a recess-like constriction arranged in the back side away from the opening of the hook.

### Claim 6 (depends on 1)

The load hook per claim 1, wherein the cover region tapers, starting at the outer contour of a lower end of the hook tackle in the region of the hook, toward the outer contour of the hook at the back side of the hook opposite the opening of the hook.

### Claim 7

A load hook, comprising:
a hook fastened to a hook tackle, wherein the hook is stationary relative to the hook tackle and the hook tackle comprises an outer contour;
a cover region at least partially arranged between the hook tackle and the hook to cover a portion of the hook starting at the outer contour of the hook tackle;
wherein the cover region and the hook tackle form a single piece; and
wherein the cover region tapers, starting at the outer contour of a lower end of the hook tackle in the region of the hook, toward the outer contour of the hook at the back side of the hook opposite the opening of the hook.

### Claim 8 (depends on 7)

The load hook per claim 7, wherein the end of the cover region away from the hook tackle dips at least partly into a recess-like constriction arranged in the back side away from the opening of the hook.

### Claim 9

A load hook, comprising:
a hook fastened to a hook tackle, wherein the hook is stationary relative to the hook tackle, and the hook tackle comprises an outer contour at a lower end thereof in the region of the hook;
a cover region at least partially arranged between the hook tackle and the hook to cover a portion of the hook starting at the outer contour of the hook tackle;
wherein the cover region tapers, starting at the outer contour of the lower end of the hook tackle in the region of the hook, toward the outer contour of the hook at the back side of the hook opposite the opening of the hook; and
wherein the end of the cover region away from the hook tackle dips at least partly into a recess-like constriction arranged in the back side away from the opening of the hook.

### Claim 10 (depends on 9)

The load hook per claim 9, wherein the cover region and the hook tackle form a single piece.

### Claim 11

A load hook, comprising:
a hook fastened to a hook tackle, wherein the hook is stationary relative to the hook tackle, and the hook tackle comprises an outer contour at a lower end thereof in the region of the hook;
a cover region at least partially arranged between the hook tackle and the hook to cover a portion of the hook starting at the outer contour of the hook tackle;
wherein the cover region adjoins a lower end of the hook tackle facing the hook in the manner of at least a ring segment, said cover region at least partially covering the hook in the region of a back side of the hook opposite an opening of the hook;
wherein the cover region tapers, starting at the outer contour of a lower end of the hook tackle in the region of the hook, toward the outer contour of the hook at the back side of the hook opposite the opening of the hook; and
wherein the end of the cover region away from the hook tackle dips at least partly into a recess-like constriction arranged in the back side away from the opening of the hook.