NZ703300A - Telescopic Hook - Google Patents
Telescopic HookInfo
- Publication number
- NZ703300A NZ703300A NZ703300A NZ70330014A NZ703300A NZ 703300 A NZ703300 A NZ 703300A NZ 703300 A NZ703300 A NZ 703300A NZ 70330014 A NZ70330014 A NZ 70330014A NZ 703300 A NZ703300 A NZ 703300A
- Authority
- NZ
- New Zealand
- Prior art keywords
- hook
- hooking portion
- shaped
- telescopic members
- hook apparatus
- Prior art date
Links
- 239000000463 material Substances 0.000 claims description 9
- 241001646071 Prioneris Species 0.000 claims description 5
- 230000005540 biological transmission Effects 0.000 description 2
- 230000001070 adhesive Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006011 modification reaction Methods 0.000 description 1
- 239000002965 rope Substances 0.000 description 1
Abstract
hook apparatus (10) including a plurality of telescopic members (12) supporting a hook arrangement (14) so as to be moveable between an extended and a retracted condition, wherein the hook arrangement (14) includes a stem (24) coupled to the plurality of telescopic members (12), a substantially C-shaped first hooking portion (26) and a toothed second hooking portion (28) which is located between the stem (24) and the first C-shaped hooking portion (26). shaped first hooking portion (26) and a toothed second hooking portion (28) which is located between the stem (24) and the first C-shaped hooking portion (26).
Description
TELESCOPIC HOOK
Technical Field
The invention relates to a telescopic hook apparatus and an associated method
of use.
Background
It is often necessary to use a crane to lift bulky or heavy items on building
sites and in fabrication facilities. When such items are lifted, the area under the lifted
item casts what is known as a load shadow. The load shadow is a projected area
beneath such a lifted item in which a person may be placed in danger if the lifted item
is dropped.
When attaching and/or detaching the crane from the bulky item, it is
sometimes necessary for the person to enter the load shadow. For example, when the
item is being lowered the person may need to guide the item to the correct position.
A problem with this approach is that the person is placed in danger whilst
within the load shadow. Another problem with this approach is that the person is
required to directly contact the lifted item which may be awkward, strenuous or
otherwise hazardous to the person.
The invention described herein seeks to overcome one or more of the above
identified problems or at least provide a useful alternative.
Summary
In accordance with a first aspect there is provided, a hook apparatus including
a plurality of telescopic members supporting a hook arrangement so as to be moveable
between an extended and a retracted condition, wherein the hook arrangement
includes a stem coupled to the plurality of telescopic members, a substantially C-
shaped first hooking portion and a toothed second hooking portion which is located
between the stem and the first C-shaped hooking portion.
In one aspect, the apparatus includes a locking means arranged to releasably
engage with at least one of the telescopic members in the retracted condition.
In another aspect, the locking means is provided in the form of a locking part
arranged to releasably engage with an inner one of the telescopic members in the
retracted condition.
In another aspect, the locking part includes cup arranged to receive and retain,
via a friction fit, the inner one of the telescopic members in the retracted condition.
In another aspect, an end of an outer one of the telescopic members is coupled
to the locking part.
In another aspect, the hook apparatus includes an end cap arranged to be
releasably securable to the end of the outer one of the telescopic members, and
wherein the end cap supports the locking part.
In another aspect, the second hooking portion is substantially V-shaped and
includes saw tooth shaped projects on inner sides thereof.
In another aspect, the C-shaped first hooking portion includes an outer leg and
an inner leg, the inner leg of the first hooking portion at least partially defining an
outer side of the V-shaped second hooking portion, and wherein the stem defines the
inner side of the V-shaped second hooking portion.
In another aspect, the C-shaped first hooking portion has a substantially
smooth inner surface.
In another aspect, the C-shaped first hooking portion is substantially larger
than the second hooking portion.
In another aspect, the telescopic members are cylindrical.
In another aspect, the telescopic members are formed from an insulative
material such as plastic.
In another aspect, the hook arrangement is formed from an insulative material
such as plastic.
In another aspect, an outer one of the telescopic members is adapted to provide
a handle.
In another aspect, the C-shaped first hooking portion has an internal width less
than its internal length so as to have at least one of an oval and elliptical inner profile
shape.
In accordance with a second aspect there is provided, a method of using a
hook apparatus to guide a load carried by a tether, the method including the steps of:
extending the hook apparatus by moving telescopic members of the apparatus to an
extended condition so as to reach the tether; capturing the tether carrying the load
using hook portion having at least one of the C-shaped first hooking portion and a
toothed second hooking portion fitted an end of the telescopic members; and guiding
the tether by applying force to a handle provided at an opposing end of the telescopic
members relative to the hook portion.
In one aspect, the method further includes the step of retracting the telescopic
members so as to engage with an internally arranged locking part so as to releasably
retain the hook apparatus in a retracted condition.
Brief Description of the Figures
The invention is described, by way of non-limiting example only, by reference
to the accompanying figures, in which;
Figure 1 is a first end perspective view illustrating a telescopic hook in an
extended position;
Figure 2 is another perspective view of the telescopic hook in a retracted
condition with an end cap removed;
Figure 3 is a second end perspective view illustrating the telescopic hook in
the extended condition;
Figure 4 is a side view illustrating the telescopic hook in the extended
condition showing the internal configuration of telescopic members;
Figure 5 is a side view illustrating the telescopic hook in the retracted
condition;
Figure 6 is a side sectional view illustrating the telescopic hook in the retracted
condition; and
Figure 7 is a side sectional view illustrating the telescopic hook in the retracted
condition with the end removed;
Figure 8 is a side view of a second example of the hook apparatus in the
retracted condition;
Figure 9 is a sectional side view of the second example of the hook apparatus
in the retracted condition;
Figure 10 is a part side sectional view of an end of the second example of the
hook apparatus in the retracted condition;
Figure 11 is a part side perspective sectional view of the end of the second
example of the hook apparatus in the retracted condition;
Figure 12 is a outer end perspective view of an end cap of the second example
of the hook apparatus;
Figure 13 is a inner end perspective view of the end cap of the second example
of the hook apparatus;
Figure 14 is a front side perspective view of the hook of the second example of
the hook apparatus;
Figure 15 is a back side perspective view of the hook of the second example of
the hook apparatus; and
Figure 16 is a side perspective view of the hook of the second example of the
hook apparatus.
Detailed Description
Referring to Figures 1 to 4, there is shown a hook apparatus 10 including a
plurality of telescopic members 12 supporting a hook arrangement 14 so as to be
moveable between an extended condition as is shown in Figures 1 and 3, and a
retracted condition as is shown in Figure 2.
The telescopic members 12 include an outer telescopic member 16, at least
one intermediate telescopic member 18 and an inner telescope member 20 which is
coupled or connected to the hook arrangement 14. The at least one intermediate
member 18 and an inner telescope member 20 are dimensioned to be substantially
received by the outer telescopic member 16 in the retracted condition.
The outer telescopic member 16 may include a handle 22 by wrapping or fitted
a handle grip material to the outer telescopic member 16. Each of the telescopic
members 12 are cylindrical in shape and are dimensioned to fit with a nest within each
other in the retracted condition. It is also noted that the fit between the telescopic
members 12 is such that a light friction fit is provided to maintain the apparatus 10 in
the extended condition whilst in use. The telescopic members 12 are formed from an
insulative material such as plastic to inhibit the transmission of electrical current.
The hook arrangement 14 includes a stem 24 coupled to the plurality of
telescopic members 12, a substantially C-shaped first hooking portion 26 and a
toothed second hooking portion 28 which is located between the stem 24 and the first
C-shaped hooking portion. 26.
The apparatus 10 include a locking means 30 arranged to releasably engage
with at least one of the telescopic members 12, in particular, the inner telescopic
member 20 in the retracted condition. In this example, the locking means 30 is
provided in the form of a locking part 32 arranged to releasably engage with the inner
telescopic member 20 in the retracted condition. The locking part 32 includes cup 34
arranged to receive and retain via a friction fit the inner telescopic member 20 in the
retracted condition as is best shown in Figure 6.
Referring now to Figures 5 to 7, the hook apparatus 10 further includes a
removable threaded end cap 36 arranged to be releasably securable to a threaded end
38 the outer telescopic member 16. The end cap 36 supports the locking part 32 with
the cup 34 extending from an inner side 40 of the end cap 36. Accordingly, in the
retracted position the locking part 32 releasably secures the inner telescopic member
to the outer telescopic member 16 which secures the apparatus 10 in the retracted
condition.
Turning to the hook arrangement 14 in more detail, the second hooking
portion 28 is substantially V-shaped and includes saw tooth shaped projects 42 which
project inwardly thereof. The V-shape and saw tooth shaped projects 42 of the second
hooking portion 28 are specifically shaped to receive and grip a tether, in particular, a
tether in the form of a 16 mm tag-line.
The C-shaped first hooking portion 26 includes an outer leg 46 and an inner
leg 48 and an entry mouth 49 between the inner leg 46 and outer leg 48. The inner leg
48 of the first hooking portion 26 defines an outer side 50 of the V-shaped second
hooking portion 28 and the stem 24 defines the inner side 44 of the V-shaped second
hooking portion 28. The C-shaped first hooking portion 26 has a substantially smooth
inner surface 52 and the C-shaped first hooking portion 26 is substantially larger than
the second hooking portion 28. The hook arrangement 14 is formed from an insulative
material such as plastic to inhibit the transmission of electrical current. The outer leg
46 may provide some resilient movement relative to the inner leg 48 to allow the first
hooking portion 26 to resiliently receive or snap fit around an object such as
scaffolding.
As may be appreciated from the drawings, both the first hooking portion 26
and second hooking portion 28 are arranged to face the handle 22 such that a user may
draw a tether or tag-line toward them as is further described below. It is also noted
that this action also assists to maintain the apparatus 10 in the extended condition
whilst in use.
Referring now to Figures 8 to 16, a second example of the telescopic hook
arrangement 10 is provided and like numerals are used to denote like parts. In this
example, the overall structure and functionality of the hook apparatus 10 is generally
similar to that described in relation to the first example shown in Figures 1 to 7 and as
such all parts are not again describe here.
Referring more specifically to Figures 10 to 13, in this example the locking
part or parts 32 are carried by an end cap 136. The end cap 136 is secured or fixed,
such as by using an adhesive, to the outer telescopic member 16. The end cap 136
includes an aperture 138 that is dimensioned to have a friction fit with inner telescopic
member 20 in the retracted condition. This friction fit serves to retain, hold or lock the
telescopic member 20, and the telescopic members 12 coupled thereto, in the retracted
condition. The aperture 138 includes a chamfered mouth 140 arranged to guide the
inner telescopic member 20 into the aperture when being moved into the retracted
condition. The end cap 136 also includes a carriage means 144 provided in the form
of a tab 146 having an aperture 148 therein for the carriage of the hook apparatus 10.
Referring more specifically to Figures 14 to 16, the hook arrangement 14 is
shown in further detail. The hooking portion 26 includes an internal length “L” that is
about twice its internal width “W”. In this example, “L” is about 70mm and “W” is
about 45mm, although other dimensions may also be utilised. Accordingly, in this
example, the internal surfaces 150 of the hooking portion 26 present an oval or
elliptical side profile or shape. The mouth 49 of the hooking portion 26 is narrower
than the width “W” so that the inner and outer legs 46, 48 can receive and snap fit or
resiliently fit around an object such as scaffolding or the like.
In this example, the toothed second hooking portion 28 has an angle “A”
between the opposing V-shaped sides 44, 50 and each side carries four saw tooth
projections 44 along the opposing V-shaped sides 44, 50. In this example, the angle
“A” is about 50 degrees, although other suitable angles may also be utilised.
The side faces 155, 157 of the hook arrangement 14 present generally flat
surfaces which provides the inner and outer legs 46, 48 with a generally square
sectional profile. The body of the hook arrangement 14 includes a recess 151 on
opposing the side faces 155, 157 to stiffen the hook arrangement 14 between the
hooking portion 26 and the stem 24.
In use the telescopic hook arrangement 10 may be used in the following
method to guide a load carried by a tether such as materials or goods being carried by
a crane cable, rope or tag-line. The method may include the steps of: extending the
hook apparatus 10 by moving telescopic members 12 of the apparatus 10 to an
extended condition so as to reach the tether. This may involve a user disengaging the
friction fit of the locking part 32 by drawing the hook arrangement 14 and the handle
22 away from one another.
The user then captures the tether carrying the load using the hook portion 14,
and depending on the type and size of the tether may use one or both of the C-shaped
first hooking 26 portion and the toothed second hooking portion 28 fitted to the end of
the telescopic members 12. The method may also include the step of guiding the
tether by applying force to the handle 22 provided by telescopic members 12.
Once the user has completed the above steps, the user may then store the
apparatus 10 by retracting the telescopic members 12 so as to engage with the
internally arranged locking part 32 so as to releasably retain the hook apparatus 10 in
a retracted condition for ease storage.
Advantageously there has been described a telescopic hook apparatus which is
lightweight, formed from an insulative material and is easily retractable to a secured
retracted position for ease of portability. This provides a unique tool which may be
particularly advantageous in the construction industry to provide users with a simple
light weight extendable hook which may be used to gather a tether which is
supporting a load. The additional reach provided by the light weight telescopic hook
allows a user to stay outside the load shadow which has significant safety advantages.
The light weight collapsible nature of the telescopic hook also ensures that the
telescopic hook would be appealing and ergonomically desirable for users, in
particular, as the telescopic hook may be releasably locked or secured in the retracted
condition.
Throughout this specification and the claims which follow, unless the context
requires otherwise, the word "comprise", and variations such as "comprises" and
"comprising", will be understood to imply the inclusion of a stated integer or step or
group of integers or steps but not the exclusion of any other integer or step or group of
integers or steps.
The reference in this specification to any known matter or any prior
publication is not, and should not be taken to be, an acknowledgment or admission or
suggestion that the known matter or prior art publication forms part of the common
general knowledge in the field to which this specification relates.
While specific examples of the invention have been described, it will be
understood that the invention extends to alternative combinations of the features
disclosed or evident from the disclosure provided herein.
Many and various modifications will be apparent to those skilled in the art
without departing from the scope of the invention disclosed or evident from the
disclosure provided herein.
Claims (17)
1. A hook apparatus including a plurality of telescopic members supporting a hook arrangement so as to be moveable between an extended and a retracted condition, wherein the hook arrangement includes a stem coupled to the plurality of telescopic members, a substantially C-shaped first hooking portion and a toothed second hooking portion which is located between the stem and the first C-shaped hooking portion.
2. The hook apparatus according to claim 1, wherein the apparatus includes a locking means arranged to releasably engage with at least one of the telescopic members in the retracted condition.
3. The hook apparatus according to claim 2, wherein the locking means is provided in the form of a locking part arranged to releasably engage with an inner one of the telescopic members in the retracted condition.
4. The hook apparatus according to claim 3, wherein the locking part includes cup arranged to receive and retain, via a friction fit, the inner one of the telescopic members in the retracted condition.
5. The hook apparatus according to claim 4, wherein an end of an outer one of the telescopic members is coupled to the locking part.
6. The hook apparatus according to claim 5, wherein the hook apparatus includes an end cap arranged to be releasably securable to the end of the outer one of the telescopic members, and wherein the end cap supports the locking part.
7. The hook apparatus according to any one of the previous claims, wherein the second hooking portion is substantially V-shaped and includes saw tooth shaped projects on inner sides thereof.
8. The hook apparatus according to claim 7, wherein the C-shaped first hooking portion includes an outer leg and an inner leg, the inner leg of the first hooking portion at least partially defining an outer side of the V-shaped second hooking portion, and wherein the stem defines the inner side of the V-shaped second hooking portion.
9. The hook apparatus according to any one of the previous claims, wherein the C-shaped first hooking portion has a substantially smooth inner surface.
10. The hook apparatus according to any one of the previous claims, wherein the C-shaped first hooking portion is substantially larger than the second hooking portion.
11. The hook apparatus according to any one of the previous claims, wherein the telescopic members are cylindrical.
12. The hook apparatus according to any one of the previous claims, wherein the telescopic members are formed from an insulative material such as plastic.
13. The hook apparatus according to any one of the previous claims, wherein the hook arrangement is formed from an insulative material such as plastic.
14. The hook apparatus according to any one of the previous claims, wherein an outer one of the telescopic members is adapted to provide a handle.
15. The hook apparatus according to any one of the previous claims, wherein the C-shaped first hooking portion has an internal width less than its internal length so as to have at least one of an oval and elliptical inner profile shape.
16. A method of using a hook apparatus to guide a load carried by a tether, the method including the steps of: Extending the hook apparatus by moving telescopic members of the apparatus to an extended condition so as to reach the tether; Capturing the tether carrying the load using hook portion having at least one of the C-shaped first hooking portion and a toothed second hooking portion fitted an end of the telescopic members; and Guiding the tether by applying force to a handle provided at an opposing end of the telescopic members relative to the hook portion.
17. The method according to claim15, further including the step of retracting the telescopic members so as to engage with an internally arranged locking part so as to releasably retain the hook apparatus in a retracted condition.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2013905030 | 2013-12-23 |
Publications (1)
Publication Number | Publication Date |
---|---|
NZ703300A true NZ703300A (en) |
Family
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