WO2007071896A1 - Hook - Google Patents

Hook Download PDF

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Publication number
WO2007071896A1
WO2007071896A1 PCT/GB2006/004148 GB2006004148W WO2007071896A1 WO 2007071896 A1 WO2007071896 A1 WO 2007071896A1 GB 2006004148 W GB2006004148 W GB 2006004148W WO 2007071896 A1 WO2007071896 A1 WO 2007071896A1
Authority
WO
WIPO (PCT)
Prior art keywords
load
bearing portion
hook
arm portion
pin
Prior art date
Application number
PCT/GB2006/004148
Other languages
French (fr)
Inventor
John Toon
Original Assignee
John Toon
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by John Toon filed Critical John Toon
Publication of WO2007071896A1 publication Critical patent/WO2007071896A1/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
    • B66C1/10—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
    • B66C1/22—Rigid members, e.g. L-shaped members, with parts engaging the under surface of the loads; Crane hooks
    • B66C1/34—Crane hooks
    • B66C1/36—Crane hooks with means, e.g. spring-biased detents, for preventing inadvertent disengagement of loads

Definitions

  • the present invention provides a hook for lifting a load.
  • the hook can be used for selectively attaching loads to lifting equipment for transportation of the loads from one location to another.
  • Conventional hooks such as those used with cranes for lifting heavy loads, have a load-bearing portion and an arm portion pivotally coupled together.
  • Loads are typically attached to chains or provided in containers or slings having tabs.
  • a torsion spring typically biases the load-bearing and arm portions into a closed configuration in which the load-bearing and arm portions provide a continuous boundary defining an eye, within which one or more tabs or chains coupled to the load can be accommodated.
  • An actuator is often provided to pivot the arm portion relative to the load- bearing portion to thereby create an opening through which the tab(s) or chains can be inserted or removed.
  • the arm portion can be moved by an operator inserting their fingers through the eye of the hook and applying a force to part of the actuator using their thumb to urge the torsion spring against its bias.
  • a hook having a load-bearing portion, wherein the hook comprises a handle coupled to the load-bearing portion, the handle defining an area separate from the load-bearing portion.
  • the handle can be either directly or indirectly coupled to the load-bearing portion.
  • the area defined by the handle can have a continuous boundary.
  • the handle can be contiguous with an outer part of the load-bearing portion.
  • the hook can also comprise an arm portion.
  • the arm portion can be pivotally coupled to the load-bearing portion.
  • the arm portion and the load-bearing portion can be movable relative to one another between a closed configuration in which the load-bearing portion and the arm portion form a continuous boundary defining a load- retaining area and an open configuration in which the arm portion and the load-bearing portion do not define a continuous boundary.
  • the arm portion and the load-bearing portion can be movable relative to one another such that the arm portion is optionally within or outwith the load-retaining area in the open configuration.
  • At least one of the load-bearing portion or the arm portion can be coupled to an actuator for selective movement of the load-bearing portion and the arm portion between the closed configuration and the open configuration.
  • the actuator can be provided remote from the load-bearing portion and the arm portion.
  • the actuator can be operable within the area defined by the handle.
  • the actuator can allow selective movement of the load- bearing portion relative to the arm portion.
  • the hook can be provided with a resilient means to bias the load-bearing portion and the arm portion into the closed configuration.
  • the resilient means can act in tension to urge the load-bearing portion and the arm portion into the closed configuration.
  • the resilient means can be a coil spring.
  • the arm portion can be provided with a shoulder for selectively accommodating an end of a pin.
  • the pin In the closed configuration, the pin can be biased by the resilient means to be accommodated in the shoulder of the arm portion.
  • the actuator can be coupled to the pin and the actuator can be operable to cause axial movement of the pin along its longitudinal axis.
  • the actuator can be operable to move the pin into and out of engagement with the shoulder of the arm portion.
  • the actuator can be operable to move the pin against the bias of the resilient means.
  • the longitudinal axis of the pin can be substantially perpendicular to a pivot axis defined by the load-bearing portion and the arm portion.
  • the hook can be a crane hook.
  • the load-bearing portion of the hook can be adapted to carry a load of up to about 16 tons.
  • the load-bearing portion of the hook can be adapted to carry a load of up to about 8 tons.
  • FIG. 1 is a perspective view of a hook in a closed configuration
  • Fig. 2 is a sectional view of the hook of Fig. 1 ;
  • Figs. 3 and 4 are front and rear views respectively of the hook of
  • Fig. 5a is a perspective view of a spring and pin mechanism
  • Fig. 5b is a perspective view of an actuator for attachment to an end of the pin of Fig. 5a;
  • Figs. 6 and 7 are sectional views of the hook of Fig. 1 in open configurations.
  • the hook is shown generally at 10 in Fig. 1.
  • the hook 10 comprises a load-bearing portion 12 and an arm portion 14 pivotally mounted with respect to one another about a pivot axis 16.
  • the arm portion 14 and the load-bearing potion 12 are shown in their closed configuration in Fig. 1 , with an end face 54 of the arm portion 14 and an end face 52 of the load- bearing portion 12 parallel to one another such that the arm portion 14 and the load-bearing portion 12 define an eye 18 having a continuous boundary.
  • the arm portion 14 has a neck 15 towards one end distal from the end face 54.
  • An eyelet 70 is attached to the neck 15.
  • a central region of the arm portion 14 surrounding the pivot axis 16 is gently rounded and has a step or shoulder 58 provided on an inwardly facing part thereof.
  • a handle portion 22 extends from an outer part of the load-bearing portion 12.
  • the handle portion 22 defines an area 19 within which an actuator 20 is provided.
  • the handle portion 22 has an aperture 24 extending therethrough.
  • the aperture 24 is of sufficient dimensions to accept rope or chain etc (not shown).
  • the actuator 20 is provided with moulded finger holds 21 and has an end 23 adapted to be a friction fit over an end 28 of a pin 30, as shown in Fig. 5a.
  • An end stop 29 is also provided towards the end 28 of the pin 30 to limit inward travel of the actuator 20.
  • a tension spring 32 is coiled around the exterior of the pin 30 and the axial extent of the spring 32 is limited by the end stop 29 and an upstanding portion 34 positioned towards a leading end 36 of the pin 30.
  • the upstanding portion 34 serves the dual function of substantially restricting rotation of the pin 30.
  • the leading end 36 of the pin 30 has a rounded end and is arranged to abut the shoulder 58 of the arm portion 14 as shown in Fig. 2.
  • the hook 10 can be used in conjunction with a crane for lifting heavy loads.
  • the hook in the present embodiment is rated to carry loads of up to around 16 tons.
  • the hook 10 is coupled to a line (not shown) from a crane (not shown) fed through the eyelet 70.
  • the crane and therefore the attached hook 10 is then moved into the desired position such that the hook 10 is in the region of the load to be transported.
  • An operator can then guide the hook 10 towards the load using a guide rope attached to the handle portion 22 through the hole 24 provided therein.
  • the handle 22 allows the operator to gain a purchase on the hook 10 without requiring to locate their fingers within the eye 18.
  • the operator can position his thumb around the outer part of the handle portion 22 and place his fingers within the finger holds 21 of the actuator 20.
  • the operator applies a force to the actuator 20 within the area 19 to thereby pull the pin 30 in an axial direction against the bias of the spring 32.
  • the upstanding portion 34 allows only axial movement of the pin 30 and substantially restricts rotation thereof.
  • the act of moving the pin 30 against the bias of the spring 32 moves the leading end 36 of the pin out of engagement with the shoulder 58 of the arm portion 14.
  • the leading end 36 of the pin 30 is free to move around an outer part of the arm portion 14 thereby permitting relative movement of the load-bearing portion 12 and the arm portion 14 as shown in Figs. 6 and 7.
  • the longitudinal axis of the pin 30 is perpendicular to the pivot axis of the arm portion 14 and the load-bearing portion 12, a wide range of movement of the arm portion 14 and the load-bearing portion 12 is permitted.
  • the relative positioning of the arm portion 14 and the load-bearing portion 12 can be adjusted such that the arm portion is movable within the load retaining area 18 (Fig. 7) and also outwith the load retaining area 18 (Fig. 6).
  • the end faces 54, 52 of the arm portion 14 and the load-bearing portion 12 respectively, move out of alignment to provide an opening through which the load can be attached and detached to and from the load-bearing portion of the hook 10.
  • the tension spring can have a greater length and greater number of coils thereby improving the relative strength and effectiveness thereof as compared to the torsion spring.
  • Spacers or washers can be added to the pin 30 to modify the length of the spring 32 and therefore the force with which the arm portion 14 is biased relative to the load-bearing portion 12 and the force that must be applied by an operator to urge the spring 32 against its bias.
  • Provision of the separate handle portion 22 allows the operator to modify the relative positions of the arm portion 14 and the load-bearing portion 12 without having to move one or more fingers into the eye 18 of the hook 10 thereby significantly reducing the likelihood of pinch or trap injuries.
  • This is aided in part by providing an actuator 20 operable along an axis perpendicular to the pivot axis 16 such that the actuator function is remote and separate from the arm portion 14, load-bearing portion 12 and eye 18.
  • the handle portion 22 could be formed as part of the arm portion 14 rather than the load-bearing portion 12.
  • the upstanding portion 34 is not necessarily formed as part of the casting of the hook 10.
  • a hole can be machined into (or formed in) the load-bearing portion 12, and a pin can be fixed within the hole to perform the same function as the upstanding portion 34.
  • the end 23 of the actuator 20 is not required to be a friction fit over the end 28 of the pin 30.
  • the actuator 20 and the pin 30 can be secured by means of a separate fastening member.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Hooks, Suction Cups, And Attachment By Adhesive Means (AREA)
  • Load-Engaging Elements For Cranes (AREA)

Abstract

The invention provides a hook (10) having a load-bearing portion (12), wherein the hook (10) comprises a handle (22) coupled to the load- bearing portion (12), the handle (22) defining an area (19) separate from the load-bearing portion (12). The handle (22) can be contiguous with an outer part of the load-bearing portion (12). The hook (10) can comprise an arm portion (14) pivotally coupled to the load-bearing portion (12). The arm portion (14) and the load-bearing portion (12) can be movable relative to one another between a closed configuration in which the load-bearing portion (12) and the arm portion (14) form a continuous boundary defining a load-retaining area (18) and an open configuration in which the arm portion (14) and the load-bearing portion (12) do not define a continuous boundary. At least one of the load-bearing portion (12) and the arm portion (14) can be coupled to an actuator (20) that allows selective, movement of the load-bearing portion (12) relative to the arm portion (14). The actuator (20) can be operable within the area (19) defined by the handle (22).

Description

"Hook"
The present invention provides a hook for lifting a load. In particular, the hook can be used for selectively attaching loads to lifting equipment for transportation of the loads from one location to another.
Conventional hooks, such as those used with cranes for lifting heavy loads, have a load-bearing portion and an arm portion pivotally coupled together. Loads are typically attached to chains or provided in containers or slings having tabs. A torsion spring typically biases the load-bearing and arm portions into a closed configuration in which the load-bearing and arm portions provide a continuous boundary defining an eye, within which one or more tabs or chains coupled to the load can be accommodated. An actuator is often provided to pivot the arm portion relative to the load- bearing portion to thereby create an opening through which the tab(s) or chains can be inserted or removed. The arm portion can be moved by an operator inserting their fingers through the eye of the hook and applying a force to part of the actuator using their thumb to urge the torsion spring against its bias. As a result of this arrangement, there are many pinch and trap injuries suffered by operators handling the hooks.
According to a first aspect of the invention, there is provided a hook having a load-bearing portion, wherein the hook comprises a handle coupled to the load-bearing portion, the handle defining an area separate from the load-bearing portion.
The handle can be either directly or indirectly coupled to the load-bearing portion. The area defined by the handle can have a continuous boundary. The handle can be contiguous with an outer part of the load-bearing portion.
The hook can also comprise an arm portion. The arm portion can be pivotally coupled to the load-bearing portion.
The arm portion and the load-bearing portion can be movable relative to one another between a closed configuration in which the load-bearing portion and the arm portion form a continuous boundary defining a load- retaining area and an open configuration in which the arm portion and the load-bearing portion do not define a continuous boundary.
The arm portion and the load-bearing portion can be movable relative to one another such that the arm portion is optionally within or outwith the load-retaining area in the open configuration.
At least one of the load-bearing portion or the arm portion can be coupled to an actuator for selective movement of the load-bearing portion and the arm portion between the closed configuration and the open configuration.
The actuator can be provided remote from the load-bearing portion and the arm portion. The actuator can be operable within the area defined by the handle. The actuator can allow selective movement of the load- bearing portion relative to the arm portion.
The hook can be provided with a resilient means to bias the load-bearing portion and the arm portion into the closed configuration. The resilient means can act in tension to urge the load-bearing portion and the arm portion into the closed configuration. The resilient means can be a coil spring.
The arm portion can be provided with a shoulder for selectively accommodating an end of a pin. In the closed configuration, the pin can be biased by the resilient means to be accommodated in the shoulder of the arm portion.
The actuator can be coupled to the pin and the actuator can be operable to cause axial movement of the pin along its longitudinal axis. The actuator can be operable to move the pin into and out of engagement with the shoulder of the arm portion. The actuator can be operable to move the pin against the bias of the resilient means.
The longitudinal axis of the pin can be substantially perpendicular to a pivot axis defined by the load-bearing portion and the arm portion.
The hook can be a crane hook. The load-bearing portion of the hook can be adapted to carry a load of up to about 16 tons. The load-bearing portion of the hook can be adapted to carry a load of up to about 8 tons.
One embodiment of the present invention will now be described with reference to and as shown in the following drawings in which:- Fig. 1 is a perspective view of a hook in a closed configuration;
Fig. 2 is a sectional view of the hook of Fig. 1 ;
Figs. 3 and 4 are front and rear views respectively of the hook of
Fig. 1 ;
Fig. 5a is a perspective view of a spring and pin mechanism; Fig. 5b is a perspective view of an actuator for attachment to an end of the pin of Fig. 5a; and
Figs. 6 and 7 are sectional views of the hook of Fig. 1 in open configurations.
The hook is shown generally at 10 in Fig. 1. The hook 10 comprises a load-bearing portion 12 and an arm portion 14 pivotally mounted with respect to one another about a pivot axis 16. The arm portion 14 and the load-bearing potion 12 are shown in their closed configuration in Fig. 1 , with an end face 54 of the arm portion 14 and an end face 52 of the load- bearing portion 12 parallel to one another such that the arm portion 14 and the load-bearing portion 12 define an eye 18 having a continuous boundary.
The arm portion 14 has a neck 15 towards one end distal from the end face 54. An eyelet 70 is attached to the neck 15. A central region of the arm portion 14 surrounding the pivot axis 16 is gently rounded and has a step or shoulder 58 provided on an inwardly facing part thereof.
A handle portion 22 extends from an outer part of the load-bearing portion 12. The handle portion 22 defines an area 19 within which an actuator 20 is provided. The handle portion 22 has an aperture 24 extending therethrough. The aperture 24 is of sufficient dimensions to accept rope or chain etc (not shown).
The actuator 20 is provided with moulded finger holds 21 and has an end 23 adapted to be a friction fit over an end 28 of a pin 30, as shown in Fig. 5a. An end stop 29 is also provided towards the end 28 of the pin 30 to limit inward travel of the actuator 20. A tension spring 32 is coiled around the exterior of the pin 30 and the axial extent of the spring 32 is limited by the end stop 29 and an upstanding portion 34 positioned towards a leading end 36 of the pin 30. The upstanding portion 34 serves the dual function of substantially restricting rotation of the pin 30. The leading end 36 of the pin 30 has a rounded end and is arranged to abut the shoulder 58 of the arm portion 14 as shown in Fig. 2.
The hook 10 can be used in conjunction with a crane for lifting heavy loads. The hook in the present embodiment is rated to carry loads of up to around 16 tons. Before use, the hook 10 is coupled to a line (not shown) from a crane (not shown) fed through the eyelet 70. The crane and therefore the attached hook 10 is then moved into the desired position such that the hook 10 is in the region of the load to be transported. An operator can then guide the hook 10 towards the load using a guide rope attached to the handle portion 22 through the hole 24 provided therein. The handle 22 allows the operator to gain a purchase on the hook 10 without requiring to locate their fingers within the eye 18.
In order to move the hook 10 into an open configuration, the operator can position his thumb around the outer part of the handle portion 22 and place his fingers within the finger holds 21 of the actuator 20. The operator applies a force to the actuator 20 within the area 19 to thereby pull the pin 30 in an axial direction against the bias of the spring 32. The upstanding portion 34 allows only axial movement of the pin 30 and substantially restricts rotation thereof. The act of moving the pin 30 against the bias of the spring 32 moves the leading end 36 of the pin out of engagement with the shoulder 58 of the arm portion 14. Thus, the leading end 36 of the pin 30 is free to move around an outer part of the arm portion 14 thereby permitting relative movement of the load-bearing portion 12 and the arm portion 14 as shown in Figs. 6 and 7. Since the longitudinal axis of the pin 30 is perpendicular to the pivot axis of the arm portion 14 and the load-bearing portion 12, a wide range of movement of the arm portion 14 and the load-bearing portion 12 is permitted. Thus, the relative positioning of the arm portion 14 and the load-bearing portion 12 can be adjusted such that the arm portion is movable within the load retaining area 18 (Fig. 7) and also outwith the load retaining area 18 (Fig. 6). In this manner, the end faces 54, 52 of the arm portion 14 and the load-bearing portion 12 respectively, move out of alignment to provide an opening through which the load can be attached and detached to and from the load-bearing portion of the hook 10.
The fact that the load-bearing portion 12 and the arm portion 14 are biased by a spring acting in tension is beneficial compared with a spring acting in torsion since the material selection of the tension spring is not as critical. The tension spring can have a greater length and greater number of coils thereby improving the relative strength and effectiveness thereof as compared to the torsion spring. Spacers or washers can be added to the pin 30 to modify the length of the spring 32 and therefore the force with which the arm portion 14 is biased relative to the load-bearing portion 12 and the force that must be applied by an operator to urge the spring 32 against its bias.
Provision of the separate handle portion 22 allows the operator to modify the relative positions of the arm portion 14 and the load-bearing portion 12 without having to move one or more fingers into the eye 18 of the hook 10 thereby significantly reducing the likelihood of pinch or trap injuries. This is aided in part by providing an actuator 20 operable along an axis perpendicular to the pivot axis 16 such that the actuator function is remote and separate from the arm portion 14, load-bearing portion 12 and eye 18. Modifications and improvements can be made without departing from the scope of the present invention. For example, the handle portion 22 could be formed as part of the arm portion 14 rather than the load-bearing portion 12. The upstanding portion 34 is not necessarily formed as part of the casting of the hook 10. Rather, a hole can be machined into (or formed in) the load-bearing portion 12, and a pin can be fixed within the hole to perform the same function as the upstanding portion 34. Further, the end 23 of the actuator 20 is not required to be a friction fit over the end 28 of the pin 30. As an alternative, the actuator 20 and the pin 30 can be secured by means of a separate fastening member.

Claims

1. A hook having a load-bearing portion, wherein the hook comprises a handle coupled to the load-bearing portion, the handle defining an area separate from the load-bearing portion.
2. A hook according to claim 1 , wherein the area defined by the handle has a continuous boundary.
3. A hook according to claim 1 or claim 2, wherein the handle is contiguous with an outer part of the load-bearing portion.
4. A hook according to any preceding claim, wherein hook comprises an arm portion pivotally coupled to the load-bearing portion.
5. A hook according to claim 4, wherein the arm portion and the load- bearing portion are movable relative to one another between a closed configuration in which the load-bearing portion and the arm portion form a continuous boundary defining a load-retaining area and an open configuration in which the arm portion and the load-bearing portion do not define a continuous boundary.
6. A hook according to claim 5, wherein at least one of the load- bearing portion and the arm portion is coupled to an actuator that allows selective movement of the load-bearing portion relative to the arm portion.
7. A hook according to claim 6, wherein the actuator is operable within the area defined by the handle.
8. A hook according to any of claims 5 to 7, wherein the hook is provided with a resilient means to bias the load-bearing portion and the arm portion into the closed configuration.
9. A hook according to claim 8, wherein the arm portion is provided with a shoulder for selectively accommodating an end of a pin and in the closed configuration, the pin is biased by the resilient means to be accommodated in the shoulder of the arm portion.
10. A hook according to claim 9, wherein the actuator is coupled to the pin and the actuator is operable to cause axial movement of the pin along its longitudinal axis.
11. A hook according to claim 9 or claim 10, wherein the actuator is operable to move the pin into and out of engagement with the shoulder of the arm portion and move the pin against the bias of the resilient means.
12. A hook according to claim 10 or claim 11 , wherein longitudinal axis of the pin is substantially perpendicular to a pivot axis defined by the pivotal coupling between the load-bearing portion and the arm portion.
13. A hook according to any preceding claim, wherein the hook is a crane hook.
14. A hook according to any preceding claim wherein the load-bearing portion is adapted to carry a load of up to about 16 tons.
15. A hook according to any preceding claim wherein the load-bearing portion is adapted to carry a load of up to about 8 tons.
16. A hook substantially as hereinbefore described with reference to and as shown in the accompanying drawings.
PCT/GB2006/004148 2005-12-22 2006-11-08 Hook WO2007071896A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0526099.7 2005-12-22
GB0526099A GB0526099D0 (en) 2005-12-22 2005-12-22 "Hook"

Publications (1)

Publication Number Publication Date
WO2007071896A1 true WO2007071896A1 (en) 2007-06-28

Family

ID=35840945

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2006/004148 WO2007071896A1 (en) 2005-12-22 2006-11-08 Hook

Country Status (2)

Country Link
GB (1) GB0526099D0 (en)
WO (1) WO2007071896A1 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009093074A1 (en) * 2008-01-24 2009-07-30 John Toon Hook
GB2506701A (en) * 2012-10-03 2014-04-09 Yoke Ind Corp Crane hook with hand grip and lock
EP3293140A1 (en) * 2016-09-13 2018-03-14 The Crosby Group LLC Hook with latch and trigger mechanism assembly
US10214394B2 (en) 2015-06-16 2019-02-26 The Crosby Group LLC Hook with latch and trigger mechanism assembly
KR20200002441U (en) * 2019-04-29 2020-11-06 (주)포스코엠텍 Hook for cran

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1687006A (en) * 1927-01-12 1928-10-09 Wesley F Cornelius Latching hook for oil-well elevators
GB2038925A (en) * 1978-12-16 1980-07-30 Erlau Ag Eisen Drahtwerk Hook
US4293156A (en) * 1978-08-03 1981-10-06 Chapalain Jean Pierre Hook
US5727834A (en) * 1996-03-22 1998-03-17 Weselowski; James Safety attachment for a lifting hook

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1687006A (en) * 1927-01-12 1928-10-09 Wesley F Cornelius Latching hook for oil-well elevators
US4293156A (en) * 1978-08-03 1981-10-06 Chapalain Jean Pierre Hook
GB2038925A (en) * 1978-12-16 1980-07-30 Erlau Ag Eisen Drahtwerk Hook
US5727834A (en) * 1996-03-22 1998-03-17 Weselowski; James Safety attachment for a lifting hook

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009093074A1 (en) * 2008-01-24 2009-07-30 John Toon Hook
USRE47349E1 (en) * 2008-01-24 2019-04-16 Nautilus Rigging Llp Hook
GB2506701A (en) * 2012-10-03 2014-04-09 Yoke Ind Corp Crane hook with hand grip and lock
GB2506701B (en) * 2012-10-03 2014-08-27 Yoke Ind Corp Locking hook
TWI482732B (en) * 2012-10-03 2015-05-01 Yoke Ind Corp Lock the hook
US10214394B2 (en) 2015-06-16 2019-02-26 The Crosby Group LLC Hook with latch and trigger mechanism assembly
EP3293140A1 (en) * 2016-09-13 2018-03-14 The Crosby Group LLC Hook with latch and trigger mechanism assembly
KR20200002441U (en) * 2019-04-29 2020-11-06 (주)포스코엠텍 Hook for cran
KR200493383Y1 (en) * 2019-04-29 2021-03-19 (주)포스코엠텍 Hook for cran

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Publication number Publication date
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