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公开(公告)号：US4776244A
公开(公告)日：1988-10-11
申请号：US874397
申请日：1986-06-16
申请人： Gene E. Olson , Paul B. Lemens
发明人： Gene E. Olson , Paul B. Lemens
CPC分类号： B25B13/08
摘要： The open-end wrench has a pair of jaws with parallel planar jaw surfaces. In each jaw surface is a configured notch having a planar drive surface, a clearance surface and a spacing surface between the drive surface and the clearance surface. The two clearance surfaces are on segments of a circle having a diameter greater than the across-corners dimension of the fastener to be tightened by the wrench. The distance between the planes of the driving surfaces is slightly greater than the across-sides dimension of the fastener. The spacing surface in each notch is a segment of a circle having a relatively small radius of curvature and is tangent to the associated clearance surface.
摘要翻译： 开口扳手具有一对具有平行平面夹爪表面的钳口。 在每个钳口表面中是具有平面驱动表面，间隙表面和驱动表面与间隙表面之间的间隔表面的配置凹口。 两个间隙表面在圆形的直径大于紧固件的跨角尺寸的直径上，以被扳手紧固。 驱动表面的平面之间的距离略大于紧固件的横向尺寸。 每个切口中的间隔表面是具有相对较小曲率半径并且与相关联的间隙表面相切的圆的一段。
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公开(公告)号：US5485641A
公开(公告)日：1996-01-23
申请号：US352431
申请日：1994-12-09
摘要： A composite, non-electrically conductive, non-sparking, non-magnetic and lightweight cutter/plier hand tool has two pivotally interconnected lever members, each of unitary, one-piece construction and formed by compression molding of multiple plies of a discontinuous random glass fiber-reinforced plastic sheet molding compound. Fixed to the jaw of each lever member is a ceramic insert made of transformation toughened zirconia, formed by dry compression and then sintering of a powdered form of the ceramic material. Each insert has a serrated gripping portion and a cutting portion, with cutting surfaces on the opposed inserts operating in shearing relationship. Three versions of the inserts are disclosed.
摘要翻译： 复合非导电，无火花，非磁性和重量轻的切割器/钳子手工工具具有两个枢轴互连的杠杆构件，每个单一的一体式结构，并通过压缩成型多层不连续无规玻璃 纤维增强塑料片模塑料。 固定到每个杠杆构件的颚部的是由相变增韧的氧化锆制成的陶瓷插件，其通过干压缩然后烧结陶瓷材料的粉末形式而形成。 每个插入物具有锯齿形抓握部分和切割部分，其中相对的刀片上的切割表面以剪切关系操作。 披露了三种版本的插入物。
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