Hilti Aktiengesellschaft

Hilti Aktiengessellschaft

Stefan Dorner

Markus Hartmann

Konstantin Baxivanelis

Michael Neumeier

Herbert Rehm

Peter Sternberger

A seal () for a bearing () that rotatably supports a shaft () extending through a housing opening () of a housing element () that limits, at least partially, a lubricant-receiving chamber (), includes a sealing ring () retainable between the housing element () and the shaft () and forming together with a limiting element () an annular gap (), and having aeration recesses () which connect the annular gap () with the grease-containing chamber ().

Shaft bearing seal

A pneumatic percussion mechanism for a hand-held power tool includes a percussion piston () displaceable in a guide tube () for applying impacts to an anvil (), a driving member () reciprocating in the guide tube () for driving the percussion piston, and an air spring () for transmitting a driving torque from the driving member () to the percussion piston () and directly switchable on and off by the anvil ().

Hand-held power tool with a pneumatic percussion mechanism

A suction connection arrangement for a compass saw includes a suction connection element () for connecting suction flow producing apparatus with the compass saw, a suction channel () for connecting the suction cross-section () of the saw with the suction connection element and completely separable from the compass saw (), and a connection device () for releasably connecting the suction connection elements () with the saw housing ().

Compass saw with a suction connection arrangement

A quick-action clamping device for a power tool includes a clamping spindle () arranged in the hollow spindle () of the power tool, an elastic member () for biasing the clamping spindle () into its clamping poition, in which the working tool is claming between a claming flange () provided on a working tool-side end of the claming spindle () and the hollow spindle (), an actuation element () for displacing the claming spindle () against the biasing force of the elastic member and into its exchange position in which the working tool () is released, and a compansator () for interrupting action of the elastic member () on the clamping spindle () in the exchange position of the clamping spindle ().

Electrical tool with a quick-action clamping device

A pendulum scroll saw including a lifting rod ( ) for securing a saw blade ( ), and a motor-driven entrain member ( ) for reciprocating the lifting rod ( ) with the lifting rod ( ) having a guide surface ( ) connectable with the entrain member ( ), and with a contact region of the guide surface ( ) with the entrain member ( ) having a curved profile that deviates from a straight line.

Growing community of inventors

Kaufbeuren, Germany

Stefan Dorner