Hilti Aktiengesellschaft

Sven Matthiesen

Michael Baumgartner

Peter Hertlein

Marco Zurkirchen

Marcel Koelliker

Peter Mugg

Matthias Schaefer

Markus Kieber

Johann Buechel

Albert Loichinger

Marcel Kölliker

Mirko Meboldt

Frank Rieger

Matthias Schäfer

A self-drilling screw () has a first cutting edge () provided exclusively in a radially inner region of the drilling tip (), extending at a first acute angle (&#x3b1;) to the longitudinal axis (L), and a second cutting edge () provided in radially outer region of the drilling tip () and extending at a second acute angle (&#x3b1;) to the longitudinal axis (L), with a first enveloping conical circumferential surface (A) which is defined by the first cutting edge () corresponding, with a maximum deviation of +/&#x2212;10%, to a second enveloping conical circumferential surface (A) defined by the second cutting edge (), and with the first acute angle (&#x3b1;) corresponding, with a maximum deviation of +/&#x2212;5&#xb0;, to the second acute angle (&#x3b1;).

Self-drilling screw

A chipless thread-forming screw () has a thread-carrying shank () provided at its opposite ends with a tip () and a head (), respectively, and having a diameter between 0.25 and 0.35 mm, with the shank () having at least one frustroconical section () extending from the tip () in direction of the head () and having, with respect to the thread root (), a point angle (&#x3b1;) between 200 and 300, and a cylindrical section () extending between the frustroconical section () and the head (), and with a starting line () of the thread () remote from the head () being spaced from the tip () by a distance (L) from 0 to 0.3 mm.

Chipless thread-forming screw

A screw including a sealing washer assembly and a shank which defines a screw axis and has a thread in at least a portion thereof and whose one end is provided with a head. The sealing washer assembly is disposed on the shank and includes at least one sealing washer and a reinforcing washer, said reinforcing washer having a thickness, and the sealing washer assembly having a cumulative thickness is disclosed. The sealing washer assembly is spaced, along the screw axis, at a distance from an underside of the head facing the shank, said distance being greater than the thickness of the reinforcing washer and smaller than the cumulative thickness of the sealing washer assembly.

Screw having a sealing washer assembly

A chiplessly thread-forming screw has a stem () at one end of which a tip () is provided and at another end of which a head () is provided, and which has a pointed conical section () extending from the tip () in a direction of the head (), a cylindrical section () arranged between the first pointed section () and the head (), a first cambered section () adjoining the pointed conical section () in the direction of the head, and a second cambered section () arranged between the first cambered section () and the cylindrical section () and an outer surface () of which has a second curvature radius (R) unequal to the first curvature radius (R) of the outer surface () of the first cambered section ().

Chiplessly thread-forming screw

A fastening element feeding device for a power drive-in tool includes a transportation device () having a transportation wheel () for a magazine strip (), at least one actuation member () displaceable in a control track () in a first component () for effecting a relative displacement between the first component () and the second component (), which results in a transportation displacement of the transportation wheel (); a displacing member () having one end region () which is adjacent to the head (), supporting the rotary axle (D) together with the transportation wheel (), and having another of its end regions () supporting the at least one actuation member (); and a guide arrangement that provides for displacement of the displacing member () over the second component ().

Fastening element feeding device for power drive-in tool

A fastening element guide device for a power drive-in tool includes a coupling section () having a chamber () for receiving a matching coupling section () of power drive-in tool () at least one locking member () displaceable between a locking position () in which its locking section () projects into the receiving chamber () for engaging a recess () provided on the matching coupling section () of the power drive-in tool () for lockingly secure the guide device () on the power drive-in tool (), and a release position () in which the locking section () is withdrawn from the receiving chamber () a spring () for biasing the at least one locking member () to its locking position (), and an actuation section () accessible from outside for manually displacing the at least one locking member () from the locking position () to the release position ().

Fastening element guide device for a power drive-in tool

A setting tool for driving in fastening elements includes a piston guide () located in the receptacle () and having a hollow chamber () in which a setting piston () is displaceably arranged, a safety element (), a piston return element (), an operational member () for operating the piston return element (), a transmission member () for transmitting movement of the operational member () to the piston return element (), and a manually actuatable actuation element () having a first adjustment section () connected with the safety element () and a second adjustment section () connected with the transmission member () for simultaneous displacement of the safety element () and the transmission member () in their respective release positions () or their safety position () and the transmission position (), respectively.

Growing community of inventors

Lindau, Germany

Sven Matthiesen