DE3203224A1 - Screw- and nut-loosening tool - Google Patents

Abstract

The invention relates to a spider wrench having opposite sockets, the supporting elements consisting of hollow bodies. The advantage consists in the fact that smaller hollow-body dimensions can be integrated in the spider wrench. At the crossing point, the hollow profiles are crossed in such a way that the telescope-like extensions can be pushed through from all sides. As a result, all of the sockets situated on the spider wrench can be used interchangeably. To tighten or loosen tight-fitting screws and nuts, the telescope-like extension can be pulled out from the spider wrench, as a result of which the lever arm is enlarged many times. To speed up this operation, a ratchet can be fitted in each case at the tube end. Polygonal hollow profiles have proved successful for increasing the stability. The integrated tubes can be firmly held at the end by a ball spring catch, and can be pulled out by a small handle. To save space in motor vehicles, the same system can also be designed without tube crossing.

Description

DESCRIPTION

Title: Screw and nut loosening device State of the art: In the machine and vehicle construction, the use of impact wrenches is widespread.

In the car repair shops and at the tire dealers Impact wrenches are used almost exclusively to tighten the wheel nuts.

Criticism of the state of the. Technology: They're on the road when they have a flat tire Wheel nuts using the conventional wheel nut wrenches supplied with new vehicles not to be solved. The use of pipes and iron bars as aids are very dangerous and require a separate storage room.

The screw and nut loosening device described below loosens the problems.

Description: The invention relates to a cross key with opposing Socket wrench inserts, the load-bearing elements consisting of hollow bodies.

This has the advantage that pipes, of the next smaller dimensions can be integrated in the cross wrench over the entire length.

At the crossing point, the hollow profiles are crossed in such a way that the telescopic extensions can be pushed through from all sides.

This means that all of the sockets on the cross wrench are used alternately.

When loosening stuck screws and nuts, the telescopic Extension can be pulled out of the cross key and increases the lever arm many times over.

After completing the task, the telescopic tubes can be returned to the Cross key can be inserted and therefore do not require a separate room.

Multi-edged hollow profiles have proven themselves to increase stability.

dd's innermost telescopic tube can be opened in the next larger one by means of a plug-in fastener be locked in such a way that only the largest in use pipe is pulled out. If necessary, the next smaller pipe can be used to extend the Lever arm can be pulled out by a slight twist in the lock.

The extendable telescopic tubes can have a Handle provided can be pulled out.

In the drawings, the subject matter of the invention is shown, for example: Fig. I The screw and nut loosening device in an extended state.

Fig. 2 Section through the socket wrench insert with tubular profile.

Fig. 3 The screw and nut loosening device pushed together State.

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Claims (1)

PATENT and PROTECTION CLAIMS The screw and nut loosening device is characterized in that the load-bearing elements of the cross wrench are made of hollow profiles exist and the telescopically extendable extensions in the cross key are integrated. 2. characterized in that the telescopic extension Can be selected in various profiles and materials for maximum stability. 3. characterized in that the socket wrench inserts inside hthl so that the retractable tubes can be pushed into them. Fig. 2 4. gekennaeichnet characterized in that the retractable tubes with each at the ends Ball fuses are vessehen to prevent the slipping during normal use Extensions is prevented. 5. characterized in that the telescopic extensions be provided with a handle at the end.