Hilti Aktiengesellschaft

G&uuml;nter Haas

Markus Hartmann

Rainer Ontl

Andreas Dieterle

Michael Fey

A battery ( ) driven circular saw includes a housing ( ) with a motor ( ) for driving the circular saw blade ( ). The circular saw blade ( ) is fixed to a drive shaft ( ) that runs transverse to the plane (E) of the circular saw blade ( ), the drive shaft being functionally connected by means of a linkage ( ) to the motor ( ). In order to achieve the most compact construction possible of the circular saw, the axis of rotation (R) of the motor ( ) runs parallel to the plane (E) of the circular saw blade ( ).

Battery operated circular saw

A tensioning device with a tensioning lever ( ) and a detachable tensioning nut ( ) has a pivotal tensioning cam ( ), mounted elastically in the tensioning lever ( ). The tensioning lever ( ) has a seat ( ) with a noncircular inside surface ( ) for receiving the tensioning nut ( ), which is mounted axially displaceably therein. The tensioning nut has an outside surface shaped to correspond to the noncircular surface of the seat ( ). The tensioning nut ( ) can be fixed removably in the tensioning lever ( ) by a recess, which is disposed in the tensioning nut and into which the tensioning cam ( ) can be engaged.

Clamping device for manually guided electric tools

A braking device for an electrical tool and including an actuation member ( ), a braking drum ( ) secured on the shaft of the electrical tool for joint rotation therewith, and a braking member ( ) secured on the actuation member for joint displacement therewith, the actuation member being linearly displaceable upon a biasing force of a return spring acting thereon for pressing the braking member against a circumferential surface of the braking drum for braking the shaft and thereby the working tool.

Growing community of inventors

Kaufering, Germany

Günter Haas

Growing community of inventors

Kaufering, Germany

G&uuml;nter Haas

Günter Haas