| 摘要 |
An automatic jar lid opener comprises a cylindrical housing and a truncated conical lid retainer rotatably attached to the cylindrical housing. A rotary hammer assembly is installed in the housing to convert a torque output from a motor assembly in the housing, into a twisting impact force applied through the lid retainer to a threaded jar lid in order to break a seal or initial resistance securing the lid screwed on a jar.
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