Hand-held hammer drill

Details Hand-held hammer drill Hand-held hammer drill

2008-01-10

2009-08-25

Smith, Scott A (Department: 3721)

Tool driving or impacting

Impacting devices

With means for rotating tool

C173S048000, C173S201000

Reexamination Certificate

active

07578358

ABSTRACT:
A hand-held hammer drill has a housing, a tool spindle rotatingly driving a tool, a hammer action percussion-driving the tool, a swash plate drive driving the hammer action, and a countershaft driving as needed the tool spindle and the hammer action. A first bearing and an axial bearing are provided. The hub is rotatably supported in a cantilevered arrangement by the first bearing in the housing and coaxially surrounds the countershaft. The hub has a free cantilevered end and the axial bearing is disposed on the free cantilevered end, wherein the axial bearing axially supports the countershaft and has radial play relative to the countershaft.

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