Not Applicable
Not Applicable
1. Field of Invention
This invention pertains to a hinge assembly and cooperating footer for boat towers. More particularly, this invention pertains to the hardware used for folding a boat tower, such as one used to pull a wakeboarder or skier. The hardware includes a hinge assembly that operates when a spring-loaded pin is retracted. The hardware also includes a footer that is used to secure an attachment point of the tower to the boat. The footer includes a spring-loaded pin that secures a tower post to the footer, which is attached to the boat.
2. Description of the Related Art
A popular recreational activity is to water ski or ride a wakeboard. A powerboat pulls a person on skis or a wakeboard, which, at an appropriate speed, allows the person to remain above the water. A pull-rope is towed by the powerboat and has a handle grasped by the person.
Powerboats employ various means for attaching the pull-rope to the boat. One means is a post located amidships that has a pull-rope attachment point above the gunwales. Another means is to use a tower that extends from the gunwales, over the cockpit, with a pull-rope attachment point at an elevated point on the tower. Because of the forces involved in pulling one or more persons behind a boat, the attachment point for the pull-rope must be structurally sound.
An example of such a boat tower is disclosed in U.S. Pat. No. 6,044,788, entitled “Water Sports Performance System and Method,” by Larson, et al., on Apr. 4, 2000. This patent discloses a boat tower that can be rotated from an upright position to a lowered position having less overall height, thereby aiding in towing the boat and passing underneath low bridges. The tower is attached to the boat with pinned connections. The pins are removed from the aft connections and the tower rotates about the pins of the forward connections. This arrangement requires that the pins be removed from the connections, resulting in loose parts that must be stored. Also, the removal of the pins, depending upon their configuration, requires the use of tools.
It is an objective of this invention to provide means for folding or lowering a boat tower without having to use tools or maintain and store loose parts removed to fold the tower.
According to one embodiment of the present invention, a folding tower with a pair of hinge assemblies and a pair of releasable footers is provided. Each hinge assembly includes two mating members that pivot about a center-point. The two mating members are secured together by a pair of spring-loaded retractable pins, or bolts, that engage openings in the mating members. When retracted, the pins release the mating members, allowing them to pivot relative to each other.
Each releasable footer is attached to a surface and has an opening with a spring-loaded retractable pin protruding into the opening. An insertable member has an opening that is engaged by the spring-loaded pin such that when the insertable member engages the footer opening, the spring-loaded pin engages the insertable member opening, thereby securing the insertable member to the footer.
In another embodiment, the folding tower has a pair of hinge assemblies and the tower end opposite the hinge assemblies has a releasable connection, thereby allowing the tower to fold after being released.
The above-mentioned features of the invention will become more clearly understood from the following detailed description of the invention read together with the drawings in which:
a is a side view of a powerboat with one type of a tower;
b is a side view of a powerboat with a second type of a tower;
a and 14b are cross-sectional views illustrating the normal and actuated position, respectively, of the operator mechanism illustrated in FIG. 10.
Apparatus for folding a boat tower is disclosed. The configuration of boat towers varies considerably. However, the need to easily reduce the height of the tower is a commonly felt need. Further, the need to be able to manipulate the tower without tools or loose parts is a commonly felt need. Toward this end, a boat tower is provided with hinges on one side and releasable connections on the other.
a and 1b illustrate two embodiments of boat towers for towing skiers and wakeboarders. Those skilled in the art will recognize that various configurations of towers can be used without departing from the spirit and scope of the present invention. Not illustrated are means for securing the wakeboards or skis to the sides of the towers. The towing tower 106 illustrated in
The tower 106, in the lowered position, is illustrated in
b illustrates a second configuration of a towing tower 106′. In this configuration, a pair of first struts 132 are attached to the gunwales, but does not provide structural support to the second struts 134. The first struts 132 typically have a cross-strut that follows the contours of the windshield 104. Each pair of second struts 134 attach to a forward footer 124 and an aft footer 126. The attachment to the aft footer 126 is a releasable connection. The second struts 134, in the illustrated configuration have a structural strut 136 and one or more cross-struts, to one of which the pull-rope point 116 is attached.
The tower 106′, in the lowered position, is illustrated in
The novel design of the hinge assembly 110 and footer 126 presented herein allows the user to fold the tower 106, 106′ without resort to tools. In other words, the present invention permits the tower 106, 106′ to be quickly folded by manipulating the tower 106, 106′ by hand, with no loose components or screws that are separate from the tower components.
Moving the operator 208 longitudinally towards the pivot point 412 causes the bolt 404 to retract such that no portion of the bolt 404 extends from the end of the first half 202. The slotted opening 206 serves to restrain the longitudinal movement of the operator 206 and, consequently, the bolt 404.
Illustrated in
Each half 202 and 212 has a lip 302 and 502 that engages a slot 424 and 524 in the other half 212 and 202 when the hinge assembly 110 is in a locked position. The strength of the hinge assembly 110 in the locked position is a combination of the pivot bolt 518, the bolts 404 pinning the two halves 202 and 212 together, and the lips 302 and 502 engaging the slots 424 and 524. In one embodiment, the two halves 202 and 212 are made of aluminum, and the other components are made of stainless steel. Because of the marine environment to which the hinge assembly 110 is exposed, these materials have the advantage of being corrosion resistant, while still having sufficient strength for their application.
Each half 202 and 212 has two chamfers 304 and 306 located on opposite sides of the opening 406 and 506. The chamfers 304 and 306, in combination with the rounded ends of the bolts 404, allow the hinge assembly 110 to be placed in the locked position without retracting the bolts 404. As the two halves 202 and 212 are brought into alignment before reaching the locked position, the rounded end of the bolts 404 strike the associated chamfer 304 or 306, which causes the bolt 404 to be pushed into the opening 406 and 506 against the spring 402 pressure. After the bolts 404 are aligned with the openings 516 and 416, the springs 402 push the ends of the bolts 404 into the openings 516 and 416, thereby locking the hinge assembly 110 in the locked position.
A bored hole 802 through a portion of the body 702 is for inserting the footer spring 706 and footer bolt 708. A countersunk opening 718 intersects the bored hole 802. The countersunk opening 718 receives the footer operator 712, which, in the illustrated embodiment, is a screw with a shoulder 904. The shoulder 904 moves within the slotted opening 806. The footer bolt 708 slides along the bored hole 802 and one end of the footer bolt 708 engages the slot 902 in the releasable member 714. The footer spring 706 pushes the bolt 708 into the slot 902. To release the releasable member 714, the footer operator 712 is slid away from the releasable member 714, thereby retracting the footer bolt 708 from the slot 902 in the releasable member 714 and allowing the releasable member 714 to be removed from the first opening 716. The illustrated embodiment shows the slot 902 as a rectangular opening cut into the releasable member 714; however, one skilled in the art will recognize that the slot 902 can be any shaped opening adapted to receive the footer bolt 708 without departing from the spirit and scope of the present invention. For example, in one embodiment, the slot 902 is a hole bored or drilled in the releasable member 714. In still another embodiment, the hole has a chamfered edge to aid in the alignment of the footer bolt 708 with the hole.
To secure the releasable member 714, the footer operator 712 is slid away from the first opening 716 such that the footer bolt 708 is retracted into the bored hole 802 and does not extend into the first opening 716. The releasable member 714 is then placed in the first opening 716 with the slot 902 orientated toward the bolt 708, and the footer operator 712 is released, thereby allowing the footer spring 706 to push the footer bolt 708 into the slot 902.
a and 14b are cross-sectional views illustrating the normal and actuated position, respectively, of the operator mechanism illustrated in FIG. 10. In the normal position illustrated in
The embodiment of the hinge operator illustrated in
Depressing the pushbutton 1002 forces the locking assembly 1122 away from the first member 202′ and disengages the locking pins 1124 from the openings 1106 in the first member 202′. The pushbutton 1002 and spring 1110 function to force the locking pins 1124 out of engagement with the openings 1106 in the first member 202′. The shaft 1116 cooperating with the opening 1104 in the first member 202′ function as a pivot, allowing the first and second members 202′ and 212′ to pivot about each other with the corresponding surfaces of the shaft 1116 and the opening 1104 functioning as a bearing.
From the foregoing description, it will be recognized by those skilled in the art that a folding tower 106, 106′ utilizing a pair of hinge assemblies 110 and releasable feet 126 have been provided. The tower is adapted to be folded without resort to tools, thereby resulting in the boat 102 having less height above the waterline.
One embodiment of the hinge assembly 110 has first and second members 202 and 212 that pivot about a pivot bolt 518. Each member 202 and 212 has a spring-loaded bolt 404 that, in the extended position, engages an opening 516 and 416 in the other member 212 and 202, thereby locking the two members 202 and 212 in fixed relation in the locked position. Each member 202 and 212 also has a lip 302 and 502 and a corresponding slot 524 and 424. The lip 302 and 502 of each member 202 and 212 engages the slot 524 and 424 of the other member 212 and 202 when the hinge assembly 110 is in the locked position. Each member 202 and 212 has a chamfer 304 and 306 adjacent the opening 406 and 506 that receives the bolt 404 from the other member 212 and 202. The chamfer 304 and 306 engages the bolt 404 and forces it into the member 202 and 212, thereby allowing the members 202 and 212 to lock without requiring operator intervention to retract the bolts 404.
Another embodiment of the hinge assembly 110′ has first and second members 202′ and 212′ that pivot about a shaft 1116 and the opening 1104 in the first member 202′. The first member 202′ has an opening 1102 into which a spring 1110 and a pushbutton 1002 fit. The pushbutton 1002 is connected to a locking assembly 1122, which has locking pins 1124 that engage openings 1106 in the first member 202′ when the hinge assembly 110′ is in the locked position. The locking assembly 1122 and the locking pins 1124 are restrained in the second member 212′ by a rotating lock plate 1112 having openings 1312 that receive the locking pins 1124. The rotating lock plate 1112 is secured to the second member 212′. The first and second members 202′ and 212′ have lips 302 and 502 and corresponding slots 524 and 424 that function to strengthen the hinge assembly 110′ in the locked position.
Both of the illustrated embodiments of the hinge assembly 110 and 110′ utilize a hand operated mechanism that is captive with the hinge assembly 110 and 110′. The captive operator mechanism allows the hinge assembly 110 and 110′ to be taken out of the locked position without removing any component or using a tool.
Both of the illustrated embodiments of the hinge assembly 110 and 110′ include components that function to pivot portions of the tower 106, 106′. In the embodiment illustrated in
Both of the illustrated embodiments of the hinge assembly 110 and 110′ include components that function to lock the pivoting portions of the tower 106, 106′. In the embodiment illustrated in
Both of the illustrated embodiments of the hinge assembly 110 and 110′ include components that function to operate, or move, the locking mechanism of the pivoting portions of the tower 106, 106′. In the embodiment illustrated in
The footer includes a footer body 702, a releasable member 714, and a spring-loaded footer bolt 708 with a footer operator 712. The footer bolt 708 slides along a bored hole 802. In the direction towards the first opening 716, the bolt 712 is forced by a footer spring 706, and in the opposition direction, the bolt 708 is moved by a footer operator 712
While the present invention has been illustrated by description of several embodiments and while the illustrative embodiments have been described in considerable detail, it is not the intention of the applicant to restrict or in any way limit the scope of the appended claims to such detail. Additional advantages and modifications will readily appear to those skilled in the art. The invention in its broader aspects is therefore not limited to the specific details, representative apparatus and methods, and illustrative examples shown and described. Accordingly, departures may be made from such details without departing from the spirit or scope of applicant's general inventive concept.
Number | Name | Date | Kind |
---|---|---|---|
6044788 | Larson et al. | Apr 2000 | A |
6374762 | Larson et al. | Apr 2002 | B1 |
6711783 | LeMole | Mar 2004 | B2 |
Number | Date | Country | |
---|---|---|---|
20040011276 A1 | Jan 2004 | US |