Note: Descriptions are shown in the official language in which they were submitted.
CA 02554130 2006-07-20
WO 2005/072915 PCT/DK2005/000047
Drill bit holder/ bit change-over device.
The invention describes a holder 1, fig. 1 for storing and retaining a number
of drill bits 2,
which are used for screwing in and unscrewing screws.
The bits 2 are used together with a magnetic bit holder 6, fig. 3, which is
mounted on a
powered screwdriver 5, fig. 4.
The bits are inserted into the magnetic bit holder 6, and screws can now be
driven into or
dismounted from a material such as wood, for example.
Holders available on the market today consist mostly of a kind of box or
container which
must be retrieved and opened, and then the bit must be changed manually from
the box to the magnetic bit holder or vice versa when changing to a screw with
a different
slot.
Two hands are needed to carry out the change-over. The change-over is
relatively
awkward and time-consuming; the bits are small and can be difficult to keep
hold of.
Often, the bits will end in a pocket together with other bits, and this
presents the
problem of finding the correct one at the next bit change-over.
The invention will be explained in detail below referring to the drawing, on
which
fig. 1, full-size and in profile, shows a holder for screw bits according to
the invention,
fig. 2, at a reduced scale, shows a holder for screw bits according to the
invention,
fig. 3 shows a magnetic bit holder, and
fig. 4 shows a powered screwdriver.
The special feature achieved by this invention is keeping the bits 2 in one
place, as well
as being able to change a bit 2 without holding it manually. You can keep the
powered
screwdriver in your working hand and take the holder 1 with the other hand.
The holder 1 could also be attached to clothing, a belt, an arm and so on. It
could be
fastened using a clip, a buckle, velcro or similar. It will be possible to
effect the
change-over using only one hand, namely the hand holding the powered
screwdriver 4.
This may be essential if you need the other hand to hold on when working on a
ladder, for
example.
The change-over will be fast and it will be easy to find the correct bit 2, as
the tip 4 of
the bit 2 is visible.
The holder 1 is executed in an elastic material which regains its shape and is
durable. The
holder 1 could be executed in an elastomeric material such as PUR.
CA 02554130 2006-07-20
WO 2005/072915 PCT/DK2005/000047
-2
The holder 1 has been provided with holes of a dimension which will retain the
bits 2
(approximately 6 m/m). The bits 2 are positioned with the sockets 3 outwards,
thereby
facilitating getting hold of the socket 3 with the magnetic bit holder 6, and
with the tip 4
visibly inwards.
The holder may assume alternative shapes depending on whether it will be kept
in a
pocket, on a belt, or whether it will be attached to clothing or maybe to the
powered
screwdriver 6 etc.
The bits 2 are retained in the holder 1 because the hole is smatter than the
dimension of
the individual bit 2, whereby the elastic material will squeeze around the bit
2 and retain it
90 in the holder 1. To deposit the bit 2 in the holder 9, the tip 4 is
inserted into the hole of the
holder 1 and by letting the powered screwdriver 5 rotate slightly, the bit can
be pressed
into the hole. When the bit 2 rotates, the friction befween the bit 2 and the
elastic material
will decrease, and one can easily press the bit 2 into place in the holder 1
where it will
remain firmly in place when the rotating stops, sufficiently to enable the
magnetic bit
holder 6 to be freed from the bit 2 which wilt then be deposited into the
holder 1.
To free the bit 2 from the holder 1, the magnetic bit holder 6 is once more
placed over the
bit 2 and the powered screwdriver 5 is allowed to rotate slightly. When the
bit 2 rotates, the elastic material will (with a slight pull) and due to the
bit's shape
automatically push the bit 2 free of the holder, and the bit 2 wilt be
repositioned in the
magnetic bit holder 6.
The holder may be executed in an etastomeric material such as PUR. The
illustrated
holder 1, fig. 1 is executed by cutting both shape and holes from a 15 mm
sheet of
PUR. In the event of production, the holder can be extruded in the same
material.
The holder is developed to function with bits 2 and magnetic bit holders 6
presently
available on the market.
The holder may assume severs! alternative shapes and be provided with a clip,
buckle or
other device whereby it can be attached to clothing, a belt and so on.
Text items such as bit dimension could be embossed on to the holder in the
extruding
process.
