Loading patent…
AssigneePi-Patent Gesellschaft mit beschraenkter Haftung (GmbH)
InventorHans-Werner Meixner
Estimating the term…
A device for driving a tool in axial direction in the course of a vibration-like forward and reverse movement, which operates at high efficiency with a rapidly oscillating stroke frequency and can be used as an easily handled hand-held appliance because, due to the drive, an especially advantageous ratio of the weight and volume to the power exerted at output is feasible. This drive consists of a piston (8) movable non-positively to and fro, which feeds oil to a working piston (22) and moves the latter correspondingly to and fro against the pressure of a spring (25) acting on the working piston (22) and against the external air pressure. The tool to be drive is preferably connected with the working piston (22) by means of the counterpressure spring (25). Working cylinder (20) and master cylinder (9) are connected with each other by a flexible hose (14) to prevent any weight transmission to the hand-held appliance. (FIG. 1)
A device for driving a tool to and fro in an axial direction, wherein a piston which is moveable to and fro, and which displaces or draws in a fluid medium which actuates a working-cylinder piston (22) in a working cylinder (20), is provided in a master cylinder, wherein the piston (8) of the master cylinder (9) is linked with minimum friction to an eccentric disc (5) so that the eccentric disc moves the piston (8) forward and back, the master cylinder (9) is separated spatially from the working cylinder (20) to prevent any weight transmission, the master cylinder (9) and the working cylinder (20) are connected with each other by a flexible hose (29) or pipeline,
Device for driving a tool to and fro in an axial direction, wherein a piston which is moveable to and fro, and which displaces or draws in a fluid medium which actuates a working-cylinder piston (22) in a working cylinder (20), is provided in a master cylinder, wherein the piston (8) of the master cylinder (9) is connected with a core (61) of an electromagnet (60) so that the electromagnet moves the piston (8) forwards and back, the master cylinder (9) is separated spatially from the working cylinder (20) to prevent any weight transmission, the master cylinder (9) and the working cylinder (20) are connected with each other by one single flexible hose (29) or pipeline,
Dependencies are inferred from the claim text.