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    • 6. 发明授权
    • Push broom head
    • 推扫头
    • US08402590B1
    • 2013-03-26
    • US09876498
    • 2001-06-07
    • Timothy J. Larson
    • Timothy J. Larson
    • A46B15/00
    • A46B9/028A46B9/025A46B2200/302
    • A push broom head is provided having a substantially rigid base, leading edge, upper and lower surface, central vertical axis, plurality of rows of seats, and a plurality of tufts of bristles. The head includes a leading edge row(s) of tufts of a first type closest the leading edge and a plurality of rows of a second type. The length of the second type of tuft bristles is longer than the length of the first type and the number of rows of tufts of the second type exceeds the first type. The axis of each tuft forms an angle relative to the base's central vertical axis. Preferably, when not in contact with the sweeping surface, the angle of attack of the second type of bristles differs by row and/or the angle of the leading row of tufts exceeds 10 degrees in a forward direction relative to the central vertical axis.
    • 提供具有基本上刚性的基部,前缘,上下表面,中心垂直轴线,多排座椅和多个刷毛簇的推扫扫头。 头部包括最靠近前缘的第一类型的簇的前缘行和第二类型的多行。 第二种类型的刷毛的长度比第一种类型的长度长,而第二种类型的簇的数量超过第一种类型。 每个簇的轴线相对于基座的中心垂直轴线形成一个角度。 优选地,当不与扫掠表面接触时,第二类刷毛的迎角相对于中心垂直轴线在向前方向上的行和/或前导行的角度不同超过10度。
    • 7. 发明授权
    • Noncylindrical telescoping handle
    • 非圆柱伸缩手柄
    • US5515574A
    • 1996-05-14
    • US299727
    • 1994-09-01
    • Timothy J. Larson
    • Timothy J. Larson
    • B25G1/04B25G1/10
    • B25G1/04B25G1/10Y10T16/473Y10T403/32483
    • A noncylindrical telescoping handle. Noncylindrically shaped tube members, such as ergonomically designed substantially triangular shaped tubes, are slidably engaged within one another which allow the tubes to move only in a linear relationship with respect to one another. By preventing the tubular members from rotating relative to one another, the telescoping handle can be moved and locked into a plurality of alternate positions of varying lengths. A spring-snap button is provided in the inner tubular member whereby the snap button protrudes through an aperture in the outer member when the two structures come into alignment. Furthermore, an elongated opening is provided at the end of the outer tubular member providing an emergency stop to prevent the tube members from completely separating.
    • 非圆柱形伸缩手柄。 诸如符合人体工程学设计的基本上三角形的管的非圆柱形管构件彼此可滑动地接合,这允许管仅相对于彼此以线性关系移动。 通过防止管状构件相对于彼此旋转,伸缩手柄可以移动并锁定成多个不同长度的替代位置。 弹簧按钮设置在内部管状构件中,当两个结构对准时,卡扣按钮突出穿过外部构件中的孔。 此外,在外管状构件的端部处设置有细长的开口,其提供紧急停止件以防止管构件完全分离。