A sanding device

Abstract

A sanding device 99 includes a sanding head 10 and a handle 1. The sanding head 10 includes a front face with an associated sandpaper securement mechanism 12 and the handle 1 is mounted by a knuckle 11 to the sanding head 10. The knuckle 11 is arranged so that the handle 1 and sanding head 10 may be mutually displaceable about at least one axis. The knuckle 11 may comprise a pivot 16 or a ball joint, it may comprise a bearing and may further comprise a locking means such as parts (71, 80 figure 4) with interlocking teeth. The knuckle 11 may connect to the sanding head 10 art a rotating plate 15. The handle 1 may be coaxially telescopic and may comprise a socket for connection of a decorating extension pole. The sandpaper securement mechanism 12 may be a hook and loop securement mechanism or a spring bias securement mechanism. The sanding device 99 may be arranged to accept cartridge units of sandpaper.

Description

Field of the Invention The present invention relates to a sanding device, in particular a device for a user to sand a surface such as a wall or ceiling; more particularly but not exclusively at an inconvenient distance from the user. Background Many people in many societies are increasingly prone to work on property, be that in a professional or amateur capacity. Aside from more skilled tasks, much improvement may be achieved from aesthetic improvements to properties, for example decoration, sanding and painting or staining with varnish or similar, or papering. It can be difficult, particularly in older style properties, that are likely to be greatly deserving, to reach parts of rooms, walls or ceilings. As a result, many decorating implements, such as paint rollers, tend to have extension pole attachment means. Sanding down in preparation for painting or papering can be problematic however. Prior Art AU 2012 101 702 (WONG) discloses a hand-held implement for cleaning, polishing or sanding comprising a handle portion, adapted to be gripped by a user, releasably connectable to a head portion, adapted to have at least one working surface configured for cleaning, polishing or sanding, said head portion rotatable in relation to the handle portion between at least two positions, a first locked position wherein the head portion is connected to the handle portion and a second unlocked position. US 8 182 317 (ANO) discloses a handheld sanding implement comprising: (a) a handle; wherein the handle is elongated; wherein the handle has a plurality of finger grooves at a first distal end of the handle; (b) a spinning head; wherein the spinning head is attached to a second distal end of the handle by a grooved notch in both the handle and the spinning head, and of which enables the spinning head to rotate about the handle; wherein the spinning head has a plurality of sanding pads; wherein each 5 sanding pad has a sanding surface. CN 2 792 706 (LIANG) discloses a grind wall abrasive paper clamp which characterized by: the handle is composed of a lower clamping plate, an upper clamping plate and a handle, wherein the upper clamping plate and the lower clamping plate are 10 matched, a fastening device is arranged between the upper clamping plate and the lower clamping plate, a bearing seat is arranged in the middle of the lower clamping plate, and the bearing seat is movably connected with the end part of the handle through a pin shaft. 15 Summary of the Invention According to the present invention there is provided a sanding device comprising: a sanding head; and a handle; wherein the sanding head comprises front face with an 20 associated sandpaper securement mechanism; and the handle is mounted by a knuckle to the sanding head; the knuckle arranged such that the handle and sanding head mutually displace about at least one axis. In some embodiments of the device the knuckle comprises a pivot, so as to allow for 25 pivoting around a first axis, for example defined by the longitudinal axis of the handle. In some embodiments of the device the knuckle comprises a ball-joint or bearing, which may allow for turning around a second axis, for example defined by the plane of the sanding head. 30 In some embodiments of the device knuckle connects to the head at a rotating plate therefore, meaning that particularly with embodiments comprising a pivot as well, the user is enabled to direct the sanding from most locations. 35 In some embodiments of the device the knuckle comprises a locking means to lock mutual displacement, for example of the pivot or ball-joint. In some embodiments of the device the handle is arranged to displace from a first longer configuration to a second shorter configuration, for example being foldable or coaxially telescopic. In some embodiments of the device the sanding head comprises hook and loop securement mechanism for sandpaper, for example where the user applies hook or loop material to the sandpaper in use, or where it is purchased as such. In some embodiments of the device the device comprises a spring bias securement mechanism for sandpaper, which may be envisaged to grip onto or over the sandpaper. In some embodiments of the device the device comprises a reversible attachment means of the sanding head to the handle, so as to allow for improvements, updates or replacements of the head. In some embodiments of the device the handle has a socket for connection of a decorating extension pole, so as to allow for longer handles. In some embodiments of the device the device comprises a light source to aid in viewing sanding areas and surroundings, for example being located at the end, for example having a push switch. According to a further aspect of the present invention there is provided a sanding device substantially as described herein, arranged to accept cartridge units of sandpaper. According to a still further aspect of the present invention there is therefore provided a cartridge unit of sandpaper for such a device. A preferred embodiment of the invention will now be described by way of example only and with reference to the Figures in which: Brief Description of Figures Figure 1 shows an isometric view of an embodiment of the device according to the present invention; Figure 2 shows a reverse isometric view of the embodiment of the device shown in Figure 1; Figure 3 shows an exploded isometric view of the embodiment of the device shown in Figure 1; Figure 4 shows a reverse exploded isometric view of the embodiment of the device shown in Figure 1; Figure 5 shows an isometric view of the embodiment of the device shown in Figure 1, in a second configuration; and Figure 6 shows a reverse isometric view of the embodiment of the device as shown in Figure 5. Detailed Description of Figures With reference to the figures there is shown an embodiment of a sanding device 99 generally comprising a sanding head 10 and a handle 1, wherein the sanding head comprises a sandpaper securement mechanism 12, and the handle is displaceably mounted on a mount 11 to the sanding head 10, the mount arranged such that the handle and sanding head mutually displace about at least one axis. In particular reference to the pictured embodiment the embodiment comprises an elongated handle 1 comprised as a single cylindrical length made up of a plurality of coaxially telescopic parts 3,5, with a handgrip 2 at a proximal end, and the head 10 at the distal end. The handle may be powder-coated aluminium or plastic or stainless steel part with an intermediate collar 4 to lock extension or retraction. The collar is acrylonitrile butadiene styrene (ABS) or similar plastic. The collar is provided with gripping ribs. The parts are arranged to telescope coaxially. The distal end comprises a knuckle 11, which knuckle connects to the sanding head at a rotating plate 15, which comprises a hinge, thereby allowing movement in a plurality of planes and axes. The knuckle is hinged at a locking pivot 16 to the rotating plate 15, which plate is set into the rear face 13 of a planar rectangular sandpaper holder 12, which comprises a flat front face 18 for receipt of the sandpaper, and two end grips 14 arranged to grip the sandpaper and pull it against the flat front face of the holder. The end grips comprise resilient members, in the pictured embodiment being stainless steel flat plates with a blade edge running coplanar to the front face of the holder, held on the holder by stainless steel springs, hinged against the holder 12, so as to spring back towards the knuckle and stretch and pull a sheet of sandpaper against the front face 18 with its ends trapped by the blade against the holder side faces. The stainless steel springs 76 are torsion springs joined at a pivot pin 82 on the ends of the rear face of the holder. The knuckle is a rigid plastic moulding such as in ABS or similar plastic, with stainless steel screw fittings 79. The knuckle comprises two parts 71,80 which have mutually interlocking teeth, where when the teeth are not interlocked the parts may counterrotate which one part 71 connected with the handle and the other part 80 connected with the holder 12. The knuckle further internally comprises angle adjustment thread 72, angle adjustment nut 73, o-ring 74, and further comprises an axially endmost tightening handle v. The knuckle attaches at a bearing 17 to the holder, the bearing turning in a rotating plate 15, around which the knuckle and handle rotate, so as to allow greater flexibility in manoeuvring the head in use. In further embodiments the rotating may be capable of being locked, or tightened, with such as a rotation locking thumb screw mechanism. The invention has been described by way of examples only and it will be appreciated 5 that variation may be made to the above-mentioned embodiments without departing from the scope of protection as defined by the claims.

Claims

1. A sanding device comprising: a sanding head; and a handle; wherein the sanding head comprises front face with an associated sandpaper securement mechanism; and the handle is mounted by a knuckle to the sanding head; the knuckle arranged such that the handle and sanding head mutually displace about at least one axis.

2. A sanding device according to claim 1 wherein the knuckle comprises a pivot.

3. A sanding device according to claim 1 wherein the knuckle comprises a balljoint.

4. A sanding device according to claim 1 wherein the knuckle comprises a bearing5, A sanding device according to any preceding claim wherein the knuckle comprises a locking means to lock mutual displacement.

6. A sanding device according to any preceding claim wherein the knuckle connects to the head at a rotating plate.

7. A sanding device according to any preceding claim wherein the handle is arranged to displace from a first longer configuration to a second shorter configuration.

8. A sanding device according to any preceding claim wherein the handle is coaxially telescopic.

9. A sanding device according to any preceding claim wherein the sanding head comprises hook and loop securement mechanism for sandpaper.

10. A sanding device according to any preceding claim comprising a spring bias securement mechanism for sandpaper.

11. A sanding device according to any preceding claim comprising a reversible attachment means of the sanding head to the handle.

12. A sanding device according to any preceding claim wherein the handle has a socket for connection of a decorating extension pole.

13. A sanding device according to any of the preceding claims arranged to accept cartridge units of sandpaper.5 14. A cartridge unit of sandpaper for a device according to claim 13.AMENDMENTS TO THE CLAIMS HAVE BEEN FILED AS FOLLOWS:Claims1. A sanding device comprising: a sanding head; and a handle; wherein the sanding head comprises front face with an associated sandpaper securement5 mechanism; and the handle is mounted by a knuckle to the sanding head; theknuckle arranged such that the handle and sanding head mutually displace about at least one axis; wherein the knuckle comprises a locking means to lock mutual displacement; and wherein the locking means comprises two parts which have mutually interlocking teeth, where when the teeth are not10 interlocked the parts may counterrotate, in which one part is connected withthe handle and the other part is connected with the holder.

2. A sanding device according to claim 1, wherein the knuckle comprises a pivot.15 3. A sanding device according to claim 1, wherein the knuckle comprises a balljoint.

4. A sanding device according to claim 1, wherein the knuckle comprises a bearing.

205. A sanding device according to any preceding claim, wherein the knuckle connects to the head at a rotating plate, wherein the rotating plate enables the knuckle and the handle to rotate with respect to one another.25 6. A sanding device according to any preceding claim, wherein the handle isarranged to displace from a first longer configuration to a second shorter configuration.

7. A sanding device according to any preceding claim, wherein the handle is 30 coaxially telescopic.

8. A sanding device according to any preceding claim, wherein the sanding head comprises hook and loop securement mechanism for sandpaper.35 9. A sanding device according to any preceding claim, comprising a spring biassecurement mechanism for sandpaper.

10. A sanding device according to any preceding claim, wherein the handle has a40 socket for connection of a decorating extension pole.

11. A sanding device according to any of the preceding claims arranged to accept cartridge units of sandpaper.11 12 24

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