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1. 发明授权

US3881441A Trolling attachment for a propeller 失效
标题翻译：螺旋桨的拖钓附件
公开(公告)号：US3881441A
公开(公告)日：1975-05-06
申请号：US43358074
申请日：1974-01-15
申请人： KADER JOHN F
发明人： KADER JOHN F
IPC分类号： B63H25/50 , F02B61/04 , B63H25/44
CPC分类号： B63H25/50 , F02B61/045
摘要： A trolling attachment for an outboard motor boat. The trolling attachment is made up of two part circular disk of platelike material split in the middle and having a semicircular opening in the center for receiving the spinner of a boat motor. The two halves of the disk are hinged together at one side and a clamping attachment is provided at the opposite side for clamping the attachment to the out side diameter of the propeller hub of a boat motor. The spaced resilient segments are supported on the periphery of the opening for holding the attachment rigidly to the spinner.
摘要翻译：舷外机动船的拖钓附件。拖钓装置由分为中间的片状材料的两部分圆盘构成，并且在中心具有用于接收船用电动机的旋转器的半圆形开口。盘的两个半部在一侧铰接在一起，并且在相对侧设置夹紧附件，用于将附件夹紧到船用电动机的螺旋桨毂的外侧直径。间隔开的弹性段支撑在开口的周边上，用于将附件刚性地保持在旋转器上。

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