Tools – Hand held holder or having clamp
Patent
1995-01-27
1996-06-18
Kisliuk, Bruce M.
Tools
Hand held holder or having clamp
81 44, 811774, 81450, B25C 300, B25G 108
Patent
active
055267238
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND AND TECHNICAL FIELD
When working with conventional nail drivers, centre punches, mandrels and similar tools, intended for striking with a hammer, and when nailing various types of cable clips etc., one is confronted with a number of problems: precision is impaired. impact damage on the hand and on the object. injuries. only handle a very limited range of dimensions. complete tool kit for a certain work assignment at hand, due to the many separate tools. A shows a centre punch mounted in a transversal bar that can be used as a handle for the centre punch, but the handle at the same time functions as a chuck wrench and is not very ergonomically shaped.
Also U.S. Pat. No. 640 696 shows a device where a centre punch or chaser punch has been equipped with a side handle. This tool is however shaped for one single, special purpose and solves very few of the problems listed above.
Furthermore, through DE B 1 226 247 a hand-held tool is known, having exchangeable tool bits attached in a fixed position at approximately right angles to the longitudinal axis of the handle. This device is however only intended for nail countersinking and is not equipped for universal use. Access is limited by all the nail drivers being attached at a fixed angle relative to the handle. Furthermore, only one nail driver at a time can be in a working position, which entails many manual operations when performing work where several sizes are needed. Finally, the device, due to it's design, can only be equipped with exchangeable tool bits having a working tip diameter that is smaller than their handle attachment end diameter.
SUMMARY OF THE INVENTION
The object of the present invention is to eliminate the problems which have been described in the beginning of this application and to provide an ergonomical and practical, handle-equipped universal tool, intended for receiving hammer blows and for using when centre-punching, driving cotter pins and nail heads, driving in nails and clips of various kinds, i. e. for all such activities where today separate thumb-grip held tools, struck by a hammer or similar, are used.
This object has been achieved in accordance with the present invention by a handle, being at least at one end equipped with a driver head fixed in a driver head socket, the latter being pivotably and lockably arranged in said handle. Into said driver head, exchangeable striking tool bits can be easily fitted, e.g. by means of threads, snap locks or similar.
The driver head/driver head socket assembly can pivot in at least one plane relative to the handle and can be locked in a number of different angular positions, all in order to achieve good accessibility, stability and visibility for the user when working in corners, from under, etc. In the embodiment example of the invention shown in the drawings, the pivoting and locking functions are achieved by means of a simple spring loaded "push-and-turn" (ratchet) device with a number of fixed locking positions, but other solutions are of course also conceivable within the scope of the invention, e.g. based on friction locking in any angular position through clamping, etc.
The driver head is so mounted in the driver head socket as to be replaceable in case of excessive wear or damage. As the handle is equipped with driver heads at both ends, and equipped with magazines for at least two additional tool bits, the user can equip himself with, and easily look after, at least four tool bits for a certain work assignment.
The number of types of tool bits can be adapted to the customer demands. Among the basic types one may easily imagine centre punches, nail drivers and mandrels of various dimensions, as well as combined holders
ailing tools for various clips and clamps intended for fastening of different types of electrical cables, fence wires, etc.
The division of the striking tool into a handle part with an attached driver head, and tool bits fitted from below into the driver head, entails that the size of the working tip area of the tool bit is not limited by the cross sec
REFERENCES:
patent: 640696 (1900-01-01), Pearl
patent: 1200158 (1916-10-01), Barrett
patent: 2691908 (1954-10-01), Lamberth
patent: 2839110 (1958-06-01), Carpenter
patent: 3935762 (1976-02-01), Tudisco
patent: 4901608 (1990-02-01), Shieh
patent: 4926721 (1990-05-01), Hsiao
Hortlund Hans
Sormunen Pertti
Danganan Joni B.
Kisliuk Bruce M.
Mutli CT AB
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