Hilti Aktiengesellschaft

Hilti Aktiengeschaft

Klaus Nagelschmied

Thomas Blatz

Roland Meuer

Joachim Guenther

Friedemann Moeller

Peter Ostermeier

Leopold Von Keudell

Bernhard Plunger

A hand-held power tool includes a drive spindle () rotatable about a rotational axis (A) and provided at its free end with a clamping flange () and a locking thread () having at least one thread undercut (), and a locking nut () tightenable on the locking thread () for securing a disc-shaped tool () between its clamping surface () and the clamping flange () of the drive spindle (), with the thread undercut () having an axial length that corresponds to at least an axial length of an inner thread () of the locking nut ().

Hand-held power tool with locking nut

A hand-held power tool includes a drive spindle () rotatable about a rotational axis (A), a clamping flange () provided at a free end of the drive spindle () and having at least one inner thread () that in a mounted condition of the clamping flange () on the drive spindle (), engages in a thread undercut () of the clamping flange (), a locking pin likewise provided at the free end of the drive spindle () and having a locking thread (), and a locking nut () tightenable on the locking thread () for securing a disc-shaped tool () between the clamping flange () and the clamping surface () of the locking nut (), with the clamping flange () having in its axial region between the disc-shaped tool () and an inner recess () of the locking nut () in which the centering collar () of the clamping flange () can be partially received at least one radial, outwardly projecting nose (), and with the disc-shaped tool () having at least one, opening radially inwardly and axially extending groove () associated with the at least one nose () of the clamping flange.

A device for regulating an amount of liquid fed to a hand-held tool for treating a constructional component and including a base body ( ) connectable to the hand-held tool ( ), an outlet channel ( ) extending parallel to an axis of the base body and an outlet opening of which is located in a region of the connection of the base body with the tool, an inlet channel ( ) extending relative to the outlet channel at an angle from 20&deg; to 90&deg;, and a valve member ( ) arranged in the base body ( ) for connecting the inlet channel ( ) with the outlet channel ( ) and having a manually adjustable adjustment member ( ).

Device for regulating amount of liquid fed to a hand-held tool

A tool bit chuck for drilling and chiseling bits has an axially extending receiving sleeve (1) with an opening (3) therethrough in which latching elements (9) are radially displaceably supported. The latching elements (9) are radially displaceable by a spring loaded axially displaceable actuating element (10). An actuating sleeve (12) laterally encloses and is axially displaceable relative to the receiving sleeve (1). Connecting members fix (6, 13) the actuating sleeve to the receiving sleeve. The actuating sleeve (12) has a stop (14) cooperating with the actuating element (10) for applying an axial force to the actuating element for assisting in centering the drilling or chiseling bit.

Growing community of inventors

Germering, Germany

Klaus Nagelschmied