US 12,257,683 B2
Electric hand-held power tool
Ernst-Rudolf Lübkert, Landsberg am Lech (DE); Karin Groth, Landsberg (DE); Uto Plank, Freising (DE); Manuel Rosenzweig, Kaufering (DE); and Andres Wellmann Jelic, Landsberg am Lech (DE)
Assigned to Hilti Aktiengesellschaft, Schaan (LI)
Appl. No. 17/914,943
Filed by Hilti Aktiengesellschaft, Schaan (LI)
PCT Filed Mar. 25, 2021, PCT No. PCT/EP2021/057773
§ 371(c)(1), (2) Date Sep. 27, 2022,
PCT Pub. No. WO2021/198023, PCT Pub. Date Oct. 7, 2021.
Claims priority of application No. 20168023 (EP), filed on Apr. 3, 2020.
Prior Publication US 2023/0142832 A1, May 11, 2023
Int. Cl. B25D 11/12 (2006.01); B25D 17/06 (2006.01)
CPC B25D 11/125 (2013.01) [B25D 17/06 (2013.01); B25D 2217/0019 (2013.01); B25D 2250/065 (2013.01); B25D 2250/121 (2013.01); B25D 2250/231 (2013.01); B25D 2250/361 (2013.01)] 19 Claims
OG exemplary drawing
 
1. An electric hand-held power tool comprising:
an electropneumatic impact mechanism having a transmission housing, a guide tube arranged at least partially in the transmission housing, an exciter piston movable in an axial direction in the guide tube, a connecting rod coupled to the exciter piston, and an eccentric wheel coupled to the connecting rod on one side and mounted so as to be rotatable with respect to the transmission housing via an end plate of the transmission housing on the other side,
the transmission housing being subdivided at least into a main shell and a cover shell separate from the main shell, such that the guide tube is braced against the main shell at least partially by the cover shell,
wherein the cover shell extends in the axial direction along an entire length of the guide tube, and
wherein the cover shell is in direct contact with the guide tube.