I. Field
The present invention relates to a fold-up grappling device that can be easily stowed more compactly.
II. Background
Anchors generally include a shank with armatures radiating therefrom. The arms of an anchor are generally fixed and take up space within the boat. As the anchor is used, the arms become dirty and coated with mud. Thus, when the anchor is placed back in the boat, the dirt can soil the boat.
Thus, there is a continuing need for a fold-up grappling device that can be folded and placed in a bucket or container for compact storage.
In view of the aforementioned problems, it is an object of the present invention to provide a fold-up grappling device as described herein.
Exemplary embodiments provide a fold-up grappling device comprising a shank or crown having a hollow tubular shaft member and a telescopic slide bar slidably coupled within the hollow tubular shaft member. The device further includes a plurality of foldable grappling arms attached to a base of the shank or crown and a plurality of linking arms coupled to the telescopic slide bar to push the grappling arms to an unfolded position from a folded position or pull the grappling arms to the folded position from the unfolded position. Raising the telescopic slide bar within the hollow tubular shaft member unfolds the foldable grappling arms simultaneously and when lowering the telescopic slide bar, the foldable grappling arms are folded simultaneously.
The above and other objects and features of the present invention will become apparent from the drawings, the description given herein, and the appended claims.
For a further understanding of the nature and objects of the present invention, reference should be had to the following description taken in conjunction with appended claims and with the accompanying drawings in which like parts are given like reference numerals.
The images in the drawings are simplified for illustrative purposes and are not depicted to scale. Within the descriptions of the figures, similar elements are provided similar names and reference numerals as those of the previous figure(s). The specific numerals assigned to the elements are provided solely to aid in the description and are not meant to imply any limitations (structural or functional) on the invention.
The appended drawings illustrate exemplary configurations of the invention and, as such, should not be considered as limiting the scope of the invention that may admit to other equally effective configurations. It is contemplated that features of one configuration may be beneficially incorporated in other configurations without further recitation.
The grappling device 100 includes a shank or crown 105 to which a plurality of foldable grappling arms 110 are attached. A free end of each of the grappling arms 110 has coupled thereto a spike member 120 or flukes. The shank or crown 105 includes a hollow tubular shaft member 150, also shown in
A lower end of the hollow tubular shaft member 150 has a base or lower central hub 140 coupled thereto. The lower central hub 140 has a plurality of spokes 144 radiating therefrom. The plurality of spokes 144 are generally equally spaced about hub ring 142 of the lower central hub 140 wherein each arm of the plurality of foldable grappling arms 110 has one end pivotally coupled to a respective one spoke 144. A free end of each spoke 144 is configured to be pivotally coupled to a first end 196 (best seen in
The central axis of the lower central hub 140 is aligned with the longitudinal axis of the hollow tubular shaft 150 and the slide bar 152.
The shank or crown 105 further comprises a slide channel 155 formed along a portion of the length of tubing of the hollow tubular shaft member 150. The shank or crown 105 further includes a slidable collar 160 concentrically coupled about the hollow tubular shaft member 150. The slidable collar 160 is coupled to one end (bottom end) of the slide bar 152 via fastener 162. The fastener 162 slides within the slide channel 155, thereby restricting the range of movement of slidable collar 160.
The top end of the slide bar 152 has coupled thereto a ring or shackle 180 to attach the shank or crown 105 to a cable or chain 192 (see, e.g.,
The fold-up grappling device 100 further comprises a plurality of linking arms 130 configured to fold up and unfold the plurality of grappling arms 110 as the slidable collar 160 slides along the exterior of hollow tube shaft member 150 in conjunction with the movement of fastener 162 within channel 155. Each linking arm 130 has a first end 198 pivotally or hingedly coupled to the slidable collar 160 via first pivot coupler 134 and a second end 200 pivotally or hingedly coupled to a grappling arm 110 via second pivot coupler 132 at a distance above the first end 196 (see, e.g.,
The slidable collar 160 has a plurality of radiating tabs 164 to which the linking arm 130 is hingedly or pivotally attached via first pivot coupler 134. The radiating tabs 164 are generally equally spaced around the circumference of collar ring 166 of the slidable collar 160.
In an exemplary embodiment, the first and second ends of the linking arm 130 are forked ends 202 configured to create a hinge connection via the pivot couplers 134 or 132 between the slidable collar 160 and the grappling arm 110, respectively. The linking arm 130 is configured to push or pull one end of the grappling arm 110 away from or toward the shank or crown 105.
The grappling device 100 further includes a hook member 190 coupled to the exterior of the hollow tubular shaft member 150. The slide bar 152 may be tied, secured or fastened to a lower position, as best seen in
The linking arms 130, collar 160 and central hub 140 with spokes 144 are made of a rigid synthetic material such as plastic, PVC, etc. However, other materials may be used. The shank or crown 105, arms 110 and spike members 120 are made of metal.
In operation, when the slide bar 152 is raised or pulled up from a lower position, the slidable collar 160 is simultaneously raised (i.e., slid toward a top end of the slide channel 155) causing the linking arms 130 to simultaneously, in unison, transition (pivot) from a substantially vertical position (
In operation, when the slide bar 152 is lowered or pushed down from a raised position, the slidable collar 160 is simultaneously lowered (slid in and toward a bottom of the slide channel 155) causing the linking arms 130 to simultaneously, in unison, transition (pivot) from a substantially horizontal position (
It should be noted that in the embodiment of
In an exemplary embodiment, if a pulling force applied to the slide bar 152 is released, the device will fold under gravity. However, from an unfolded position or any intermediate unfolded positions, in order to fully fold the arms, a force may be applied to the top of the slide bar 152 to push the slide bar 152 down until a fully folded position is achieved.
After the grappling device 100 is in a folded position, the cable or chain 192 (
As can be appreciated, the grappling device 100 can be deployed in a number of ways. Thus, one example of deployment will be described in detail below.
When the grappling device 100 is deployed, the slide bar 152 should first be unhooked or otherwise disengaged from hook member 190 to an unlocked or unhooked state. When the grappling device 100 is lifted by a chain or cable attached to shackle 180, the slide bar 152 slides up along the hollow tubular shaft member 150 which can unfold the grappling arms 110, as previously described. Also, when the grappling device 100 is unlocked or unhooked, the weight of the grappling device 100 would unfold, or keep unfolded, the grappling arms 110 via gravity. Using the chain or cable, the grappling device 100 in the unfolded position can be dropped, flung, tossed or thrown, for example, off the side of a boat to embed the spike members 120 or flukes into the seabed, waterway floor, grass, rocks, oyster beds, etc.
The illustrations of
In an example embodiment, the grappling device 100, when folded, can fit within a five gallon container or storage container (not shown). Thus, as the water and mud drips and/or dries, the container can capture the water and mud to prevent the boat from being soiled. Additionally, the storage container also hides, covers or encloses the spike members 120 from harm's way between uses of the grappling device 100. The grappling device 100 can be easily cleaned in the storage container.
While the exemplary embodiment places the forked end (i.e., forked end 533 of
The top arm section 114 is generally linear and has a straight edge 124 having coupled thereto the spike members 120 or fluke. One side of the spike members 120 is illustrated as having a generally triangularly shaped profile. A point 125 of the spike members 120 or fluke serves as a spike or grip to pierce the seabed, floor, grass, etc.
The first triangularly shaped spike member 522 and the second triangularly shaped spike member 524 are generally flat plates. The points 525 of the first triangularly shaped spike member 522 and the second triangularly shaped spike member 524 are configured to embed or grip the seabed, waterway floor, grass, etc.
The base of the double spike member 520 is integrated to the grappling arm. Below the base, the linking arm 530 is attached via a hinge coupler 532. The linking arm 530 has a forked end 533. The grappling arm includes tab 519 with a hole to connect the hinge coupler 532. The combination of the forked end 533, tab 519 and hinge coupler 532 encompasses a hinge connection. Other hinge connections described herein have a similar configuration. However, other hinge or pivoting connections may be used.
Each of the first triangularly shaped spike member 522 and the second triangularly shaped spike member 524 includes an inner edge 527 wherein a top point of the inner edge 527 corresponds to point 525. In an exemplary embodiment, when the chain or cable is pulled in a direction to unfold the arms and the arms unfold, the inner edge 527 of the spike member 520 is moved such that the inner edge 527 may be parallel or near parallel to the chain or cable (or the hollow tubular shaft member 150), as can be seen in relation to
In view of the foregoing, the grappling device of the present invention can be used as an anchor for a boat or other vessel.
In view of the above, the grappling device may be used as a grapnel anchor.
In view of the above, the grappling device includes spikes or claws that enhance the gripping force generated as the spike members embed themselves in the ground, mud, seabed, ice, sand, grass, etc., as the telescopic slide bar is pulled.
The foregoing description of the embodiments of the invention has been presented for purposes of illustration and description. It is not intended to be exhaustive or to limit the invention to the precise form disclosed, and modifications and variations are possible in light of the above teachings or may be acquired from practice of the invention. The embodiments were chosen and described in order to explain the principles of the invention and its practical application to enable one skilled in the art to utilize the invention in various embodiments and with various modifications as are suited to the particular use contemplated. It is intended that the scope of the invention be defined by the claims appended hereto, and their equivalents.
The present application claims priority from U.S. Provisional Application No. 61/305,933, filed Feb. 18, 2010, which is incorporated herein by reference as if set forth in full below.
Number | Name | Date | Kind |
---|---|---|---|
1373067 | Goodreau | Mar 1921 | A |
1495544 | Abernathy | May 1924 | A |
2940411 | Bartels et al. | Jun 1960 | A |
3123037 | Jensen | Mar 1964 | A |
3197169 | Burrows | Jul 1965 | A |
Number | Date | Country | |
---|---|---|---|
61305933 | Feb 2010 | US |