Patent Grant
7856936
The invention relates to an anti-theft security system for boats on boat lifts, which also provides for stability to eliminate boat swaying on the lift during wind storms.
There has been an increased amount of boat thefts along the coast of the Gulf of Mexico. Most thefts involve boats capable of moving at high speeds and the thefts involve drug runners who immediately take the stolen boats to Mexico for use by the drug runners. They look for boats with three outboard motors or high speed inboard boats that can run away from the Coast Guard.
What is needed is a system for locking down the boats on the lifts as a deterrence.
The present invention is a system that is incorporated into the structure of an existing boat lift. The boat is placed onto the lift in the usual manner. It is then secured in place using the present invention. The boat is still lifted up by cables but rests on brackets for stability and security.
The brackets comprising the present invention can be placed on several levels; for daily use and for storm safety. Even with heavy winds, the boat will not rock or sway as with cables alone, the brackets secure its position.
Even if a thief cuts the cables, the boat will not fall into the water, as the brackets will hold it in place. The locking mechanism is configured to make it difficult to cut since there is interference provided for in the design of the structural components of the invention. Hence the only way to release the boat is to open or break the lock and lower the boat.
In general, the invention is a boat lift security and locking system incorporated into a boat lift system that includes a plurality of parallel boat lift upright support members and is configured with boat hull cradle members and parallel spaced-apart transverse primary support members that are lifted to raise and lower the boat to and from the water, the boat lift security and locking system comprising:
two longitudinal spaced-apart secondary support members, the secondary support members having means for movably engaging the spaced-apart transverse primary support members so as to move each of the secondary support members in an inward and outward direction while in an underlying relationship with the spaced-apart transverse primary support members;
a pull bar attached to one of said secondary support members having a length sufficient to be handled from a dock, the pull bar serving as means for manipulating the inward and outward motion of the secondary support member furthest away from the dock edge;
means for seating or resting the two longitudinal spaced-apart support members in place when the boat is stored on said boat lift system; and
means for securing and locking one of the two longitudinal spaced-apart support members to the means for seating the two longitudinal spaced-apart support members.
The means for movably engaging the spaced-apart transverse primary support members so as to move each of the secondary support members in an inward and outward direction while in an underlying relationship with said spaced-apart transverse primary support members comprises two spaced-apart brackets coupling each of the secondary support members to a lower flange portion of a respective transverse primary support member, the brackets further having rollers configured to roll along an upper surface of the lower flange portion.
The system further comprises means for preventing an over-travel of the rollers and its coupled secondary support members more than a predetermined distance from each respective side of the upright support members.
The system further comprises means for securing and locking the pull bar to a respective opposing secondary support member so that the parallel secondary support members remain in a non-interference position with a lowering or raising of the boat lift system.
The means for seating the two longitudinal spaced-apart support members when the boat is stored on the boat lift system comprises a bracket secured to two or more upright support members on each side of the boat lift system, each bracket being configured such that bracket fasteners can not be removed when the secondary support members are engaged in the brackets.
The means for securing and locking one of the two longitudinal spaced-apart support members to the means for seating the two longitudinal spaced-apart support members when the boat is stored on the boat lift system and to one of the upright support members comprises a lock system having a first component configured to be an elongate members insertable through an underside opening of at least one of the brackets secured to two or more upright support members through the secondary support member and configured to further extend above the secondary support member for engagement of a mating locking coupler component.
In the accompanying drawings,
Referring now to the drawings,
For aid in identifying the components of a typical boat dock lift and the components of the present invention used with a boat lift, the following enumerated parts from one example of the invention which is depicted in the drawings are listed:
In the example given, the drawings depict two longitudinal spaced-apart side rails or secondary support members 12, in the example formed by I-beams, which are bracketed to the boat lift transverse I-beams or primary support members 102. In the example provided, the lower flanges 116 of the support members 102 are used. Depending on the support member 102 shape, there are several means for providing the bracketing. When an I-beam configuration is used for member 102, the brackets are typically configured so as to provide means for inward and outward (or transverse) travel of the secondary support members 12 while in an underlying relationship to the spaced-apart transverse primary support members 102. In the drawing example, rollers 14a are incorporated into brackets 14 configured to couple the secondary support members 12 with the primary support members 102 wherein the rollers 14a are able to roll on the top surfaces (both sides of I-beam) of each lower flange 116 of the primary support members 102 and to allow the secondary side rails 12 to travel laterally along the lower primary lift I-beam flanges 116 in an underlying relationship to the primary lift I-beams 102. In a preferred embodiment, roller stops 14b are placed on the flange surface 116 nearest the dockside so that the side rail 12 nearest the dockside can not be pushed or rolled to the point where it would be difficult to reach the rail 12 to bring it back for locking with the upright supports 104 on the dockside. There are several means for preventing an over-travel of the rollers 14a more than a predetermined distance from each side of the upright supports 104. One simple illustration is to provide an angled form or plate that serves as a stopping mechanism. The bracket 14 itself is typically fastened to secondary support members 12 and extend vertically to effective wrap around the lower flanges 116 of the I-beam 102 with the rollers 14a configured to roll about an axis pin 14c along the top surface of the lower flanges 116.
The opposite side rail 12 or rail the furthest away from someone standing at the dockside pier, has a pull bar assembly 16 (shaped in the drawings as U-shaped but need not be) attached to it such that someone standing on the dock can grab the pull bar assembly handle and laterally maneuver the opposite side rail in position for docking and locking the boat or away from the opposite lift posts to drop the boat into the water. The pull bar handle (common leg of U-shaped pull bar in drawings but could be transverse bar if formed as a single arm) is configured to be locked or otherwise secured into a U-shaped channel bracket equipped with a pull pin 16c mounted on top of the near side rail 12 so that the opposite rail and near rail are effectively interlocked together. The U-shaped channel depicted assumes an engagement with a pull bar that is U-shaped with a common leg, however, a single transverse arm shaped pull bar could engage in a similar U-shaped channel that is rotated 90 degrees. The travel across the underside of the primary lift I-beams can be limited by the U-bolts that tie in the PVC vertically mounted spaced-apart boat guides 106 that extend upward from the top surface of the primary lift I-beams 102. The pin 16c can be attached to a lanyard or cable that has a remote end attached to the dock or dock post. The lanyard is not shown in the drawings. The ends of the spaced-apart legs of the pull bar assembly 16 are attached to the side rail 12 furthest away from the dockside pier/dock (see attachment points 16a). As mentioned above, the pull bar 16 can be a straight bar with a single attachment point 16a to the far side rail 12. However, in a preferred embodiment, the pull bar 16 is U-shaped as illustrated. Further, the means for securing and locking said pull bar to a respective opposing secondary support member so that the parallel secondary support members remain in a non-interference position with a lowering or raising of said boat lift system can be in the form of the U-shaped channel discussed above with a pull pin that secures the bar component within the channel or other methods could be used such as an aperture in the pull bar component and the rail with an inserted pin through both or a clip into which the pull bar component snaps into or any other equivalent method. These methods and others are well known in the art and can easily be adapted as a matter of design choice.
When a boat 110 is lifted for docking at the pier, the pull bar 16 is unlocked or otherwise freed from the bracket 16b and the handle portion is pushed adjacent the upright supports 104, and the nearest side rail 12 is pulled adjacent the upright supports 104 closest to the dockside pier/dock. The lift assembly 108 can be activated mechanically or electrically using a motors and is used to lower the lift until the respective side rails 12 drop into brackets 18. It is preferable that at least two spaced-apart brackets 18 be used on the upright support 104. The upper side of each bracket is essentially L-shaped or U-shaped when coupled to each upright support 104. In the drawings, three upright supports 104 on each side of the lift assembly are illustrated and a bracket 18 is installed on each member 104. If the upright supports are metallic, then brackets 18 can be welded or bolted or if the supports 104 are wooden pilings, then long bolts 18a or lag screws can be used as illustrated.
The brackets 18 are the primary components of the main or primary locking mechanism 20. There are several means for locking the side rails 12 to the dockside upright members 104 using brackets 18. The brackets 18 themselves can not be removed when the side rails 12 are engaged with brackets 18 as the fastening bolts 18a are inserted first and can not be backed out without lifting the side rails 12. Only one locking mechanism 20 is needed at one of the brackets 18 on one of the pier/dock side upright members 104. A standard lock coupled to the bracket 18 and side rail 12 may be useful. However, in a preferred embodiment, the locking mechanism 20 is designed so that a thief has difficulty cutting or breaking the lock due to interferences.
Certainly, the lock components can be made from a hardened steel material such as those used on automobile steering wheel locking bars or trailer hitch locks, that is, material that is hard and time-consuming to cut, if at all. A preferred method of providing means for locking the boat 110 to the pier uprights 104 is to incorporate a pin 20a that is attached to the upright member 104 by a lanyard 20c. Although lanyard 20c is not needed, it is a great convenience item to prevent pin 20a from being dropped in the water. Pin 20a is insertable through a hole 20d in the bottom of the bracket 18 through holes 20e (upper hole shown in
It should be understood that the preceding is merely a detailed description of one or more embodiments of this invention and that numerous changes to the disclosed embodiments can be made in accordance with the disclosure herein without departing from the spirit and scope of the invention. The preceding description, therefore, is not meant to limit the scope of the invention.
This application claims the benefit of provisional patent application Ser. No. 61/111,005 filed Nov. 4, 2008.
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| Number | Date | Country | |
|---|---|---|---|
| 20100107950 A1 | May 2010 | US |
| Number | Date | Country | |
|---|---|---|---|
| 61111005 | Nov 2008 | US |
