Percussion and/or drill hammer with oscillation damping
AssigneeWacker-Werke GmbH & Co. KG
InventorsRudolf Berger, Thomas Maurer
Life of this patent
Estimating the term…
Abstract
The inventive percussion and/or drill hammer (10) consists essentially of a hammer housing (12) which surrounds a rotor for a percussive tool (11), including the drive mechanism and the holding element, and an outer shell (14) which encompasses the hammer housing (12) at a distance. Said outer shell (14) is connected elastically to the hammer housing (12) at selected coupling points and is connected to a first handle (16) at the end facing away from percussive tool (11) in the direction of impact of said percussive tool (11). The outer shell (14) extends as far as or at least almost as far as the percussive tool (11) where it is provided or can be provided with a second handle (17), said percussive tool projecting out of the hammer housing (12).
Claims24
A percussion hammer and/or hammer drill comprising a hammer casing which 1) surrounds a percussion mechanism together with a drive and a holder for a percussion tool and 2) is surrounded, at a distance, by an outer shell 1) which is connected to the hammer casing via elastomeric bodies which dampen vibrations both in a direction that is parallel to a direction of impact of the hammer or drill and in a direction that is perpendicular to the direction of impact of the hammer or drill, the elastomeric bodies having different resilient properties in the different directions, and 2) at whose end which is remote from the percussion tool in the direction of impact thereof there is a handle that projects from an area of the hammer casing, wherein the outer shell extends at least almost as far as the area of the hammer casing from which the percussion tool projects.
A percussion tool assembly comprising:
- a percussion mechanism;
- a percussion tool driven by the percussion mechanism;
- a holder for the percussion tool;
- a hammer casing which surrounds the percussion mechanism and the holder;
- an outer shell which 1) surrounds the hammer casing at a distance, and 2) is connected to the hammer casing via elastomeric bodies which dampen vibrations both in a first direction that is parallel to a direction of impact of the percussion mechanism and in a second direction that is perpendicular to the direction of impact of the percussion mechanism, the elastomeric bodies having different resilient properties in the first and second directions;
- and
- a handle which projects from an area of the hammer casing and which is located at an end of the outer shell which is remote from the percussion tool in the direction of impact thereof.
Dependencies are inferred from the claim text.