MXPA96005575A - Improvements in cerradu - Google Patents

Abstract

It is provided as a new industrial product an anti-theft lock specially designed for automobiles that presents a high security when placed and that is also relatively inexpensive, characterized in that it consists of the technical and functional combination of a key that carries a bit that has about at least one of its surfaces grooves and / or holes that form the key to open the cerradu

Description

IMPROVEMENTS IN LOCK D E S C R I P C T ION The present invention relates to mechanisms for closing so that they can only be opened by those who possess a corresponding key. The invention also relates to the keys used by those locks. Different locks are already known to close doors, chest covers, furniture drawers, etc. among which we can mention the apparent lock, the mortise lock, the entabed lock, the fitted lock, etc. These mechanisms have three parts, which are the lock itself, which contains the latch (s) with its mechanism, the strike and the key with which the bolt is passed to the strike. Lately special lock mechanisms have been designed for anti-theft in particular to prevent theft of cars. In these mechanisms the most common anti-theft lock has a latch that penetrates a slot in the steering wheel shaft and locks the steering. By means of the invention an anti-theft lock specially designed for automobiles is provided which has a high security when placed and which is also relatively inexpensive. This lock includes a key specially designed for a cylinder lock, that is to say those locks that include bolts and springs that are equal to open by means of a key. The cylinder lock of the present invention generally follows the usual mechanism used in these locks although it has been designed differently to be operated by means of a key that includes a bit that carries the key or combination that allows to drive the bolts that impede the turn of the lock or that matched by the key allow to open the lock. The lock of the invention comprises a substantially prismatic body receiving a U-shaped closer that plugs into the lock and is firmly secured by means of the latches towards the ends of the U; preferably this U-shaped closer ends in a point. Next, a detailed description of the invention will be given, given only as a non-limiting example, with reference to the accompanying figures, since different variations and modalities can occur in view of the invention without thereby departing from the spirit and scope of the present invention, which should be contemplated in its broadest manner. In the drawings: Figure 1 is a front elevational view of a lock mechanism made in accordance with the present invention. Figure 2 is a profile view of the lock of Figure 1. Figure 3 is a plan view of the key used by the lock. Figure 4 shows the closer used in the lock; and Figure 5 shows in a top view of the holes where the closer enters. In the different figures, the same reference numbers are used to indicate the same parts. With reference to the figures and especially to figure 1 there is shown a prismatic box 1 which houses a lock cylinder which holds the closer 2 in its closed position. The lock includes a key 3 with a bit 4 that carries on at least one of its surfaces a selected key combination (not shown) in the form of holes and slots. The cylinder of the invention preferably, but not exclusively, comprises five small springs for pressing on five bolts and two bullets, safety devices and safety springs (not shown) are also included. The closer 2 is a U-shaped body that ends at the tips 5 and has two grooved grooves 6 which serve to lock the closer 2 by means of the cylinder. Towards the front there is an extension 7 that carries the ears 8 for inserting or removing the cover 1. From the bottom is the end 9 of the cylinder with the slot suitable for receiving the bit 4 of the key 3. Finally figure 5 illustrates the holes 10 receiving the closer 2. Obviously the illustration is schematic since any person moderately informed in this technique in view of the invention can easily make the lock. The dimensions, materials and / or colors will be as required without that other invention is contemplated since the latter is only limited by what is claimed in the following clauses.

Claims (3)

R E I V I N D I C A C I O N S

1. - Improvements in lock, especially an anti-theft lock specially designed for automobiles that basically comprises a prismatic box that houses the lock cylinder that holds the closer in its closed position, characterized in that the cylinder is adapted to receive a key with a bit that it has a selected key combination on at least one of its surfaces. 2.- Improvements in lock according to clause 1, characterized in that the cylinder comprises five springs, five bolts and two bullets, and safety and safety springs. 3.- Improvements in lock according to clauses 1 and 2, characterized in that the key consists of a bit that carries at least one of its surfaces conical holes and / or grooves that form the key combination of the key. SUMMARY It is provided as a new industrial product an anti-theft lock specially designed for automobiles that presents a high security when placed and that is also relatively inexpensive, characterized in that it consists of the technical and functional combination of a key that carries a bit that has about at least one of its surfaces grooves and / or holes that form the key to open the lock.