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    • 8. 发明授权
    • Motor pack for circular saw
    • 圆锯电机组
    • US4694721A
    • 1987-09-22
    • US848592
    • 1986-04-08
    • Louis C. Brickner, Jr.
    • Louis C. Brickner, Jr.
    • B23D47/12B27B5/24
    • B23D47/12Y10T83/7697Y10T83/7788Y10T83/8773
    • Method and apparatus for providing motive power to a tool are disclosed. A preferred power mitre box (10) including a base (12), a table (14) and electrically-powered motor unit (18) suitable for driving a saw blade (20) is described. The motor unit (18) includes an armature (40) and an arbor shaft (22) which are respectively supported by armature bearings 42 and arbor bearings 44 and are preferably substantially parallel and of substantially the same length. Also, the distances between the armature bearings (42) and the arbor bearings (44) are preferably substantially equal. The relatively large distance between the arbor bearings (44) causes the blade (20) to have very little play or deflection due to looseness in the bearings (44). In preferred embodiments, a speed reducer assembly (34) is located on the opposite end of the arbor shaft (22) in relation to the blade (20). Also, the speed reducer assembly is preferably of the cog belt type.
    • 公开了向工具提供动力的方法和装置。 描述了包括适于驱动锯片(20)的基座(12),工作台(14)和电动马达单元(18)的优选动力斜切箱(10)。 马达单元(18)包括衔铁(40)和心轴轴(22),它们分别由衔铁轴承42和心轴轴承44支撑,并且优选地基本平行并且具有基本相同的长度。 此外,电枢轴承(42)和心轴轴承(44)之间的距离优选地基本相等。 心轴轴承(44)之间相对较大的距离导致叶片(20)由于轴承(44)的松动而具有非常小的游隙或挠曲。 在优选实施例中,减速器组件(34)相对于叶片(20)位于心轴(22)的相对端上。 此外,减速器组件优选为齿轮型。
    • 9. 发明授权
    • Miter box construction
    • 斜角箱结构
    • US4694720A
    • 1987-09-22
    • US848591
    • 1986-04-08
    • Louis C. Brickner, Jr.Jerry D. Skipworth
    • Louis C. Brickner, Jr.Jerry D. Skipworth
    • B23D45/04B23D47/02B27G5/02B27B5/24
    • B23D47/025B23D45/044B27G5/02Y10T83/7697Y10T83/7788Y10T83/8773
    • Method and apparatus for supporting a power tool, e.g., a power mitre box, are disclosed. In a preferred embodiment (10), an electrically-powered motor unit (16) is pivotably supported by a table (14) which in turn is rotatably supported by a base (12). The base (12) preferably includes four legs (20) and an equal number of studs (26). The legs (20) and studs (26) combine to form front slot (27a) and rear slot (27b) in the base (12) suitable for receiving a pair of horizontal support members, e.g., a pair of two-by-fours (34). The base (12) also preferably includes a pair of extensions (24) which are sized to make the top surface of the base (12) and table (14) flush with a plurality of cross pieces (36) spanning the horizontal support members (34). The flush surface created by the cross pieces (36), base (12) and table (14) is suitable for supporting a long workpiece so as to minimize blade binding and splintering.
    • 公开了一种用于支撑电动工具(例如电动斜盘箱)的方法和装置。 在优选实施例(10)中,电动马达单元(16)由台(14)枢转地支撑,台(14)又由基座(12)可旋转地支撑。 基部(12)优选地包括四条腿(20)和相等数量的钉(26)。 腿部(20)和螺柱(26)组合以形成在底座(12)中的前槽(27a)和后槽(27b),其适于接收一对水平支撑构件,例如一对二乘四 (34)。 基座(12)还优选地包括一对延伸部(24),其尺寸设计成使得基部(12)和工作台(14)的顶表面与跨过水平支撑构件的多个横梁(36)齐平 34)。 由十字件(36),基座(12)和工作台(14)产生的平齐表面适合于支撑长的工件,以便最小化刀片的结合和分裂。