发明名称 Boat trailer
摘要 A boat trailer utilized particularly for transporting "shoal" or shallow keel sailboats behind a towing vehicle. The trailer includes a series of central keel rollers that receive and provide support for the sailboat along its fixed longitudinal keel. On either side of the keel rollers are resilient elongated bunks for engaging the sailboat hull and providing some support as well as preventing lateral tipping of the sailboat when held in a loaded condition. The resiliency of the bunks enables them to conform intimately to the hull of the sailboat. The bunks include areal hull engaging surfaces over which the weight of the boat is evenly distributed. Toggle mechanisms are provided at rearward ends of the bunks and are operable to laterally separate the rearward bunk ends. When operated, the bunks may be moved between a substantially parallel operative orientation whereat the boat hull is provided maximum support, and inoperative positions wherein the bunks are spaced laterally further apart at their rearward ends and converge forwardly to their forward ends. The latter position facilitates loading and unloading of the sailboat.
申请公布号 US4011958(A) 申请公布日期 1977.03.15
申请号 US19750601916 申请日期 1975.08.04
申请人 CALKINS MANUFACTURING COMPANY 发明人 CARRICK, LAWRENCE K.
分类号 B60P3/10;(IPC1-7):B60P1/52 主分类号 B60P3/10
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