IPC분류정보
| 국가/구분 |
United States(US) Patent
등록
|
| 국제특허분류(IPC7판) |
|
| 출원번호 |
US-0415791
(2012-03-08)
|
| 등록번호 |
US-8388265
(2013-03-05)
|
|
발명자
/ 주소 |
- Basta, Samuel T.
- Thompson, Gene
|
| 출원인 / 주소 |
|
| 인용정보 |
피인용 횟수 :
3 인용 특허 :
70 |
초록
▼
A watercraft lifting system includes a bunk rail assembly, an intermediate frame assembly, a base assembly and a ground support assembly. The bunk rail assembly includes a bunk rail coupled to a load distribution member. The load distribution member is received by the bunk rail such that the bunk ra
A watercraft lifting system includes a bunk rail assembly, an intermediate frame assembly, a base assembly and a ground support assembly. The bunk rail assembly includes a bunk rail coupled to a load distribution member. The load distribution member is received by the bunk rail such that the bunk rail may rotate by at least a limited amount relative to the load distribution member. The bunk rail may slideably receive a bunk cushion and form a channel therewith for sandwiching a rigid structural member (e.g., a board). The watercraft lifting system may also include contoured clamps that cooperate to distribute and transfer load between frame members. In one embodiment, the contoured clamps include parabolically-shaped inner surfaces.
대표청구항
▼
1. A lifting system for watercraft, comprising: a base assembly;a ground support assembly for supporting the base assembly at a desired location;a frame assembly defining a plurality of attachment locations, where the frame assembly is supported by the base assembly for rotation between first and se
1. A lifting system for watercraft, comprising: a base assembly;a ground support assembly for supporting the base assembly at a desired location;a frame assembly defining a plurality of attachment locations, where the frame assembly is supported by the base assembly for rotation between first and second positions relative to the base assembly;an actuator operatively connected to the frame assembly such that the extension and retraction of the actuator causes the frame assembly to move between the first and second positions;first and second bunk rail assemblies, where each bunk rail assembly comprises a plurality of load distribution members each defining a bearing surface and at least one slot;a rail member defining an inner surface, where the inner surface envelops the plurality of load distribution members such that the plurality of load distribution members are spaced from each other, andthe bearing surfaces of the plurality of load distribution members engage the inner surface of the rail member such that loads on the rail are transferred to the plurality of load distribution members,the bearing surfaces of the plurality of load distributions and the inner surfaces of the rail member are configured such that the rail member is capable of rotating relative to the plurality of load distribution members, anda pin associated with each attachment locations, where each pin rotatably connects the attachment locations to one of the plurality of load distribution members; anda bolt assembly associated with each of the slots in the plurality of load distribution members, where each bolt assembly extends through the slot associated therewith to attach the load distribution members to the rail member without interfering with rotation of the rail member relative to the plurality of load distribution members. 2. A lifting system as recited in claim 1, in which the base assembly comprises: first and second frame members defining outer surface portions having a first shape;third and fourth frame members;first, second, third, and fourth clamp members defining inner surface portions having a second shape, where the first shape is complementarily to the second shape; wherebythe first and second clamp members are secured to the third frame member;the third and fourth clamp members are secured to the fourth frame member;the inner surface portions of the first and second clamp members are arranged to engage the outer surface portion of the first frame member; andthe inner surface portions of the third and fourth clamp members are arranged to engage the outer surface portion of the second frame member. 3. A lifting system as recited in claim 2, in which: the first and second frame members are formed by sections of a first type of extruded member; andthe first, second, third, and fourth clamp members are formed by sections of a second type of extruded member. 4. The lifting system of claim 3, in which the first and second types of extruded members are formed of aluminum. 5. A lifting system as recited in claim 2, in which: the frame assembly comprises first, second, third, and fourth links, andfifth, sixth, seventh, and eighth clamp members each defining inner surface portions having the second shape, where the fifth, sixth, seventh, and eighth clamp members are rotatably attached to the first, second, third, and fourth links, respectively; wherebythe third and fourth frame members define outer surface portions having the first shape;the inner surface portions of the fifth and sixth clamp members are arranged to engage the outer surface portion of the third frame member; andthe inner surface portions of the seventh and eighth clamp members are arranged to engage the outer surface portion of the fourth frame member. 6. A lifting system as recited in claim 5, in which: the first, second, third, and fourth frame members are formed by sections of a first type of extruded member; andthe first, second, third, fourth, fifth, sixth, seventh, and eighth clamp members are formed by sections of a second type of extruded member. 7. The lifting system of claim 6, in which the first and second types of extruded members are formed of aluminum. 8. The lifting system of claim 5, in which the first, second, third, and fourth links define each define one of the plurality of attachment locations. 9. A lifting system as recited in claim 8, in which: a pair of link holes is formed in the links at each of the attachment locations; anda pair of distribution member holes is formed in each of the plurality of distribution members; wherebyeach of the pins extend through one of the pairs of link holes and one of the pairs of distribution member holes. 10. A lifting system as recited in claim 1, in which each of the bunk rail assemblies comprises a cushion member supported by one of the rails. 11. A lifting system as recited in claim 1, in which: the rail members each define a channel; andeach of the bunk rail assemblies comprises a reinforcement board, anda cushion member; wherebythe reinforcement boards secure the cushion members relative to the rails. 12. A lifting system as recited in claim 1, in which: the load distribution members are formed by sections of a first type of extruded member; andthe rail members are formed by sections of a second type of extruded member. 13. The lifting system of claim 12, in which the first and second types of extruded members are formed of aluminum. 14. A lifting system as recited in claim 3, in which: the load distribution members are formed by sections of a third type of extruded member; andthe rail members are formed by sections of a fourth type of extruded member. 15. The lifting system of claim 14, in which the first, second, third, and fourth types of extruded members are formed of aluminum. 16. A lifting system as recited in claim 5, in which: the load distribution members are formed by sections of a third type of extruded member; andthe rail members are formed by sections of a fourth type of extruded member. 17. The lifting system of claim 16, in which the first, second, third, and fourth types of extruded members are formed of aluminum.
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