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    • 4. 发明授权
    • Adjustable pitch garden hoe tool
    • 可调节花园锄头工具
    • US5479993A
    • 1996-01-02
    • US278599
    • 1994-07-21
    • James A. Bojar
    • James A. Bojar
    • A01B1/06A01B1/08A01B1/22
    • A01B1/06A01B1/08Y10T74/20696Y10T74/20702
    • Disclosure is made of an adjustable pitch garden hoe tool head (16) as an article of manufacture wherein the pitch of the garden hoe tool head (16) head assembly can be adjusted to control the dig or "bite" into the soil and comprises ferrule legs (11, 11') mounted on an extended handle (1) and adjustable pitch garden hoe tool head (16) mounted on the ferrule legs (11, 11') and a modified compression V spring (10) having a three sided trapezoidal shape with an apex segment of modified compression V spring (23) which is a straight segment at the apex mounted within the ferrule legs (11, 11') and arms (9, 9') of the modified compression V spring (10) extending into pitch set slots (4, 4') and pitch set stops (3, 3') in vertical sides (5, 5') of base blade (6) of the garden hoe tool head (16). Further disclosure is made of a cutting notch (8) on the bottom back of either or both of vertical sides 5, 5' of base blade and the cutting notch and all edges of vertical sides 5, 5' of base blade and garden hoe tool base blade (6) are sharpened to a cutting edge.
    • 公开了一种作为制品的可调间距花园锄头工具头(16),其中可以调节花园锄头头部(16)头部组件的间距以控制挖掘或“咬入”土壤并且包括套圈 安装在延伸手柄(1)上的腿部(11,11')和安装在套圈腿部(11,11')上的可调节节距花园锄头工具头(16)以及具有三边形梯形的改进的压缩弹簧(10) 形状,其具有改进的压缩V形弹簧(23)的顶点段,其是在安装在套圈腿部(11,11')内的顶点处的直线段和改进的压缩弹簧(10)的臂(9,9')延伸 在花园锄头工具头(16)的基部刀片(6)的垂直侧(5,5')中设置成桨距设定槽(4,4')和桨距设定挡块(3,3')。 进一步公开了基刀片的切割凹口(8),其位于底刀片的垂直侧面5,5'之一或两者的底背上,并且切割凹口和基部刀片和花园锄工具的垂直边5,5'的所有边缘 基刀片(6)被锐化到切削刃。