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    • 53. 发明授权
    • Frontward-rowing boat spanning angular oars having self-surfacing blades
    • 具有自表面叶片的前方船舶扫射角
    • US3857356A
    • 1974-12-31
    • US38337973
    • 1973-07-27
    • JEWETT H
    • JEWETT H
    • B63H16/04B63H16/10
    • B63H16/04B63H16/107
    • Novel frontward-rowing crisscrossed boat-spanning angular oars having many unique advantages over usual oars are mounted on a portable crossbar anchored athwart the gunnels of a canoe, dinghy, skiff, or other rowable craft by thin, narrow bars rested lengthwise along the gunnels and bound to them by waterproof adhesive tape applied to the subjacent faces of the sidewalls of the craft. Streamlined carom-type shields insure against intercontact between oars and boat structure or accessories in case of extremely abnormal or excessive submergence. The blades resemble usual blades in being slab-shaped, yet unique buoyancy is achieved by cradling them in terminal portions of especially light-weight, rigid looms, plus use of low-density rigid cellular solid compositions or foams for their bodies; the buoyancy causing them to instantly and automatically rise to any predetermined degree of above-water emergence when released from immersive rowing force. Also, the blades are instantly replaceable by mere extraction through mouths in their cradles, followed by in-feeding therethrough of blades of selectedly different densities or heights. In addition, the buoyancy of individual blades can be lessened to any desired extent, and their long-time resistance to rowing stresses concomitantly supplemented, simply by in-feeding of elongate, rigid metal bars in horizontal disposition into narrow, vertically disposed, sleeve-like pockets in the blades, through tape-sealable mouths located, e.g., in their upper edges.
    • 新颖的向前划船十字形的跨越角度的桨具有比普通桨具有许多独特优势的优势,安装在便携式横梁上,锚定的独木舟,小艇,小艇或其他划艇的手枪由薄而窄的杆条沿着枪口纵向延伸, 通过应用于工艺侧壁的相邻表面的防水胶带将它们粘合到它们上。 在极度异常或过度淹没的情况下,流线型卡箍式盾牌可确保桨和船结构或配件之间的互相接触。 叶片类似于通常的板状扁平叶片,但是通过将它们装在特别轻质的刚性织机的端部中以及使用低密度刚性泡沫固体组合物或泡沫体来实现它们的独特浮力。 当从沉浸式划船力释放时,浮力导致它们立即自动地升高到任何预先确定的高于水面的程度。 此外,刀片可以通过仅在其托架中的嘴部提取而立即替换,随后通过其中选择不同的密度或高度的刀片进给。 此外,单个叶片的浮力可以减少到任何期望的程度,并且通过将水平布置的细长的刚性金属棒向狭窄的垂直布置的套筒 - 通过位于其上边缘的例如位于胶带密封的口中的叶片中的凹口。
    • 55. 发明授权
    • Oar bracket
    • OAR支架
    • US3740780A
    • 1973-06-26
    • US3740780D
    • 1971-05-12
    • KNIPPLE H
    • KNIPPLE H
    • B63H16/04B63H16/06
    • B63H16/04
    • A bracket mountable on an oar includes a support plate with a pin carried by one end of the plate. A U-bolt is fastenable to the other end of the plate and around the oar at its longitudinal center of gravity to hold the bracket on the oar. The pin telescopically interfits with an oar lock socket on the sidewall of a boat with the plate resting across the top edge of the sidewall thereby to hold the oar in an out-of-the-way position along the outer sidewall of the boat.
    • 可安装在桨上的支架包括支撑板,其具有由板的一端承载的销。 U型螺栓可固定在板的另一端并且在其纵向重心处围绕桨,将支架固定在桨上。 销可伸缩地与船的侧壁上的桨锁定插座相配合,其中板跨过侧壁的顶部边缘,从而将桨保持在沿着船的外侧壁的不规则位置。