Sfs Stadler Ag

Leica Geosystems Ag

Stadler Ag

Gerhard Bogel

A stand with at least three stand legs (), which is embodied to fasten a leveling, plumbing, or angular calibration device (), is provided, with the stand legs () being embodied rotational around a common axis () at their ends facing each other. Each stand leg () is bent by the same angle (&#x3b1;) at a distance from the axis (), with a freely projecting section () of one leg being provided with a threaded bolt () freely protruding transversely thereto.

Stand with at least three legs

Attachment element with large washer

In a washer, a central opening is provided for receiving a screw. This large surface-area washer comprises a flat edge area extending so as to be closed with a convexly curved portion adjoining the latter. The central opening is defined by a wall which is conically shaped or comprises one or more steps. The washer serves to fasten parts to an underlying structure, particularly to fasten single-layer or multiple-layer roofing with insulating material on a fixed underlying structure.

Washer with convexly curved surface

A fastener assembly for securing roofing on soft insulation material to a solid base is formed of an axially elongated screw and a large surface washer. The screw has an elongated shank with a cutting tip at one end and a screw head at the other. A self-cutting thread is formed on the shank. The shank has a thread-free section extending from the screw head. The thread-free section has a diameter not greater than the diameter of the opening in the washer into which the screw is inserted. The washer has a countersunk area around the screw opening to receive the screw head in a recessed manner. The shank of the screw, at a spaced distance from the screw head and in the axially extending region of the thread-free section has a stop or similar member which forms a support for the washer. With the assembly secured to the solid base, the washer is tiltable relative to the screw. Accordingly, the fastener assembly can be stepped on without any damaging transfer of stress from the washer to the screw.

Fastener assembly for securing roofing on a soft insulation material to

An elongate supply ribbon of plastic material for supporting bolt-like fastener elements is structured with a back wall portion and a plurality of tongues extending from opposite sides of the back wall portion generally perpendicularly to the plane thereof. Bending regions interposed between the back wall portion and the tongues are formed with notches which have sides abutting each other when the tongues are bent to extend perpendicularly from the plane of the back wall portion in order to provide bearing support for the tongues.

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Balgach, Switzerland

Gerhard Bogel