Abstract: A portable power tool 1 has a tool holder 2 for retaining a tool 3, a handle 7, an electric motor 4, and a drive train 10. The drive train couples the electric motor 4 to the tool holder 2. The drive train 10 contains a planetary transmission 11 with a planet carrier 13 and a plurality of planet gears 14. At least one of the planet gears 14 has a cylindrical cutout 30 and the planet carrier 13 has a collar 24 in the form of a circular arc that protrudes into the cutout 30.
Abstract: A hand-held power tool has a pneumatic striking mechanism (6). The striking mechanism (6) has a motor-driven exciter (12), a striker (13) and a pneumatic chamber (15) arranged along a working axis (10) between the exciter (12) and the striker (13). At least 20% of the volume of the pneumatic chamber (15) is filled with a monoatomic gas.
Abstract: A tool for placing and securing sealing strip (11) into a joint gap (19) between structural parts (17, 18) includes a lead-in device (10) guiding the sealing strip (11) into the joint gap (19), an insertion device (8) aligning the sealing strip (11) and a contact pressure device (7) with two coextensive contact pressure faces (12, 13) for pressing the sealing strip (11) within the joint gap (19). A spacing (A) between the contact pressure faces (12, 13) transversely of their coextension is variable.
Type:
Grant
Filed:
June 8, 1994
Date of Patent:
March 19, 1996
Assignee:
Hilti Akiengesellschaft
Inventors:
Jurgen Kortenkamp, Gebhard Gantner, Walter Winkler