| 摘要 |
Discloses a torque multiplication device for use in tightening or loosening a nut, lug, bolt head and the like, employing a planetary transmission of sun, planet and orbit gear means which multiplies the applied torque input to produce an output torque to facilitate and simplify such tightening or loosening. Brake means incorporated with the device prevents rotation of the orbit gear means. A modification of the invention discloses an extensible brake arm which has an anchoring socket for securement with another nut, lug, bolt head and the like to likewise prevent rotation of the orbit gear means. Another modification of the invention discloses two sets of sun, planet and orbit gear means having one common, drive output to produce uniform and balanced drive output. Another modification of the invention discloses a ring-like brake arm having a plurality of anchoring sockets for locking securement with the lugs of a motor-vehicle wheel. Also disclosed in a torque measuring device for use in measuring the magnitude of output torque being transmitted by the output drive means so that a human operator can thereby control the magnitude of such torque being applied to prevent a nut or bolt head from being sheared off through excess application of torque.
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