GB2428017A

GB2428017A - Multi-driver tool

Info

Publication number: GB2428017A
Application number: GB0513949A
Authority: GB
Inventors: Amar Hayat
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-07-07
Filing date: 2005-07-07
Publication date: 2007-01-17
Also published as: GB0513949D0

Abstract

A hand-held tool which is capable of tightening or loosening any shape or size of screw, nut or bolt. In one embodiment, thin but strong retractable filaments 5 (metal pins) adapt to the shape of the head 8 of the screw 9 when they are pressed against it. The filaments 5 are locked in position in a base unit 2 by a locking mechanism 4, which holds the filaments tightly in position to prevent further retraction. A switch 3 is provided to operate the locking mechanism 4. The filaments 5 may be provided in a circular shape to surround a nut or bolt (see figure 5). Alternatively, an elongated metal part can expand in different directions once it is inserted into the groove of a screw to fit the shape of the screw (see figures 3 and 4). An electric motor or mains power may be provided.

Description

Description of Multi-Screw/Bolt/Nut Head Tightening/Loosening Tool named

The Multi Driver' The invention relates to a workman's tool which allows for the convenient tightening/loosening of any shape or size of screw (including Alan key screws) or bolt or nut without the need for attaching any extra bit parts At present the comparative common screw driver' must be adapted or selected correctly to ensure it is of the appropriate shape and size in order to allow for the intended screw to be tightened/loosened. This invention is therefore intended to alleviate the need for using different screw drivers or of needing to attach any component parts.

The invention basically consists of two versions (embodiments) of the tool; one which contains long retractable tightly compact filaments (metal pins) which when pressed against the head of the screw, will take, at the point of contact, a similar shape of the screw head and allow for the tightening of the screw (no matter what the condition or shape of the screw) as it will in principle, create an opposing mirror image of the screw head, and thereby allow for the screw to be tightened. The second will comprise of an elongated metal part which once inseredntoheoe of a screw can expand-into differen dir-ections-in-erder- to fit the- desired shape and size of the screw head/bolt/nut.

The tool in first form will be made of very fine but strong retractable filaments (metal pins) likely to be made of a durable metal. These will be held in place by a secure hand held base unit. The filaments (metal pins) should be strong enough to exert sufficient force once pressed against the screw head, to rotate the screw without being easily damaged or worn. An electronic motor (or it could be mains powered) could be installed in the base unit to allow for the invention to be electrically powered - making it effortless to use.

The tool in its second embodiment consist of a long metal part which will be designed to expand at the point of contact with the screw head or bolt/nut as describe above. The metal part will essentially perform the same function as the first embodiment in that, once inserted into the grove of the screw/nut/bolt it will adjust to the necessary shape and size and allow for the screw/nut/bolt to be tightened/or loosened.

A preferred embodiment of the invention will now be described with reference to the accompanying drawings in which: Figure 1 shows a frontal view of the device containing the retractable filaments (metal pins) Figure 2 shows a view of the device during use Figure 3 shows a frontal view of the device containing a metal part which can expand Figure 4 shows a view of the device during use As shown in figure 1, the tool can be of any shape or design, although the comparative hand held screw driver offers a conmion design likely to appeal to market buyers. The tool is supported by 2 a base unit in which is contained 4 the locking mechanism which serves to hold the retractable filaments (metal pins) in place. The locking mechanism needs simply to hold all the filaments tightly together to prevent any further retraction of the filaments once Aey have pushed into the head of the screw/nut/bolt. On the push of 3 a switch which powers the locking mechanism into operation. 5 The filaments which are not pushed back when pressed against 8 the head of the screw will securely fill the grove within the head of the screw. 6 the filaments which are pushed back will retract and on pressing 3 will be held in place or retracted further so as not to obstruct the tool from performing its function. 1 is a measuring adjustment feature which will control the number of filaments (metal pins) that can be released so that the tool can cater for different sizes of screw heads.

Figure 2, shows the device in use with an illustration. In 5 it can be seen that the filaments which protrude through the head of the screw will extend into the grove of the screw and occupy the space. Being tightly compacted, the filaments will neatly feat into the grove and enable the necessary function to be carried out.

Figure 3, shows the device in similar operation as to that in figure 1 although in this embodiment a different method is employed to fill the area within the grove namely a design feature which allows a elongated metal piece which is able to extend both diagonally and horizontally. Although the design of this embodiment has not yet been approved it is essentially included in this description in order to make allowance of any other similar embodiments which serve to perform the same or a similar function. Similarly the tool could be designed acircuJdesjgtJt allows the filaments to equally surround a nut or abolt from the outside as illustrated in figure 5.

Figure 4, shows again the device in similar use Figure 5, shows further embodiment of the tool which would be more suited towards tightening /loosening nuts and bolts. The principle behind the tool remains the same namely that the filaments which will make contact with the nut or bolt, will retract or extend in order to tightly press against the nut or bolt, in order to perform the desired function. In 6 the filaments will be circular and respond to 5 the switch, in terms of becoming more or less compact. 7 will be a supporting structure which will contract and expand, depending on the effect caused by 6, so that it can provide a perfect shape to surround the intended nut or bolt.

This should make the tool easier to perform. Alternatively a method of using a mechanism which coils around 7 could be used but essentially will engage the same principle namely the expanding or reduction in the size of 7.

Claims

1. A single Multi-screw/bo1j' tightening/loosening tool which allows any shape or size of screw, nut or bolt to be tightened without the need for additional screw drivers or screw driver parts.

2. A Multi-screwoltJnut tightening tool as claimed in claim 1, where the base unit is surrounded by an external hand held grip. In the first design the base unit supports an internal locking mechanism. This will securely hold in place the thin but durable filaments (metal pins) which when pressed against the head of the screw refract, and take a mirror shape, in order to allow a fine covering of the screw head. In the second design the base unit holds a metal part which will be designed to expand in different Jirections toilie desired size or-shape and maintain that form with *sufficient-str-ength so as to be capable of performing the necessary function. In the third embodiment the head of the tool is in a circular design in order to more securely and suitably surround a bolt or a nut -3. A Multi screw/bolt/nut tightening tool as claimed in any preceding claim which is made from metal, plastic materials or wood or from a combination of these materials 4. A Multi screw/bolt/nut tightening tool substantially as herein described as above and illustrated in the accompanying drawings.