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    • 7. 发明授权
    • Magnetic ratchet/clutch type apparatus
    • 磁力棘轮/离合器式设备
    • US5970825A
    • 1999-10-26
    • US808627
    • 1997-04-15
    • Franklin E. BarnettBrian D. Smith
    • Franklin E. BarnettBrian D. Smith
    • B25B13/46F16D41/066F16D41/08
    • F16D41/064B25B13/462F16D41/086F16D2041/0646
    • Socket-type wrenches using a magnetic ratchet/clutch-type apparatus are disclosed. The apparatus preferably employs several pawls, as well as a ratchet-type wheel for engaging the pawls. The apparatus also utilizes the wrench's body which defines a chamber in which the wheel is received for rotation relative to the wrench body. The chamber also defines pockets for positioning the pawls adjacent the wheel to facilitate their movement between a drive position and a release position. In the drive position, at least one pawl is sandwiched between the wheel and a wall of the pocket to prevent the wrench body and the wheel from rotating relative to each other which enables a drive stroke to be made with the wrench. In the release position, the pawl is disengaged from the wheel which permits one to make a return stroke with the wrench. The apparatus further includes a ring magnet mounted on at least one side of the wheel for magnetically attracting the pawls to facilitate their movement into the drive position. Finally, the apparatus includes abutments which are utilized during the return stroke of the wrench to move the pawls out of engagement with the wheel.
    • 公开了使用磁性棘轮/离合器型装置的套筒式扳手。 该装置优选地采用多个棘爪以及用于接合棘爪的棘轮式轮。 该装置还利用扳手的本体,其限定了一个腔室,在该腔室中,车轮被容纳以相对于扳手主体旋转。 腔室还定义了用于将棘爪定位在靠近轮的凹槽,以便于它们在驱动位置和释放位置之间的运动。 在驱动位置中,至少一个棘爪被夹在轮和袋的壁之间,以防止扳手主体和轮相对于彼此旋转,这使得能够用扳手进行驱动行程。 在释放位置,棘爪与轮分离,这允许用扳手进行返回行程。 该装置还包括安装在车轮的至少一侧的环形磁铁,用于磁吸引棘爪以便于它们移动到驱动位置。 最后,该装置包括在扳手的返回行程期间利用的基座,以使棘爪与车轮脱离啮合。