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  Hand tool supportRelated Patent Categories: Abrading, Frame Or Mount, Portable AbraderHand tool support description/claimsThe Patent Description & Claims data below is from USPTO Patent Application 20050239383, Hand tool support. Brief Patent Description - Full Patent Description - Patent Application Claims
[0001] This invention relates to a hand tool support and relates particularly, though not exclusively, to a hand tool support for angle grinders. [0002] Angle grinders are well known hand tools and are used with many attachments. One purpose is to prepare a smooth surface by rotational abrasion. All presently available floor grinders are designed to be used with the operator either standing upright, or crouching or kneeling. The upright operation limits the direction of movement of the grinder head to either forward and backward, or from side to side. The grinding head also cannot be easily floated in a circular motion from a standing position with good control. Upright grinders cannot be floated in a circular motion because it requires holding the grinding disc or head parallel to the floor without tipping it to one side while moving it in a circular motion. Due to the poor balance from the long handle and the leverage requirements to move in a circular motion this is almost impossible under normal operating conditions from a standing position. In the kneeling position however, the grinder can be floated with good control. It can be moved in a circular direction to give a smooth finish to the work, but this is physically damaging to the back and/or the knees due to the bent bodily position. In addition many available dust shrouds or hoods stick readily to the floor when vacuum is applied because they are made of flexible materials or do not have adjustable seals. This can prevent floating, or at best can make it very difficult. [0003] It is an object of the present invention to provide a hand tool support which will alleviate the abovementioned problems. [0004] A further object of the invention is to provide a hand tool support which can be adapted to be associated with modified conventional grinders or existing grinders, or integrated therewith. [0005] With these objects in view the present invention may provide a hand tool support including a pair of handles angled with respect to one another, a frame element or connecting means adapted to be connected at one end thereof to at least one of said handles and at the other end to a hand tool, whereby, in use, said handles are located above said hand tool. [0006] Preferably at least one of said handles includes a control means for activating said hand tool. In a practical embodiment said handles are substantially at right angles to one another. Preferably said handles are substantially co-planar. Preferably said hand tool is a grinder and one of said handles is aligned, in use, above the centre line of said grinder. It is also preferred that the junction of said handles overlies above the centre of the grinding disc of said grinder. In an especially preferred embodiment said grinder includes a dust shroud and, in use, said frame element or connecting means is attached to said dust shroud. [0007] In a further aspect of the invention there may be provided a hand tool with integrated hand tool support, said hand tool support including a pair of handles angled with respect to one another, a frame element or connecting means adapted to be connected at one end thereof to at least one of said handles and at the other end to said hand tool with said handles being located above said hand tool. [0008] In another aspect of the invention there is provided a hand tool support including at least one handle means, a frame element or connecting means adapted to be connected at one end thereof to said at least one handle means and at the other end to a hand tool, whereby, in use, at least one handle means is located above said hand tool at a height to allow an operator to remain seated upright during use. [0009] The invention also relates to a switch clamping device adapted to be placed on a handle of an electrically powered device which has a trigger switch for operation thereof, said switch clamping device including a housing which slides over a part of said handle and said trigger switch, said housing being deep enough to allow the electrical connector plug of said electrically powered device to be retained in said housing above said handle, and a trigger holding means coupled to said housing for holding said trigger switch closed. [0010] Preferably said trigger holding means includes a rod passing through said housing to contact and hold said trigger switch closed. In a preferred embodiment said rod is adjustably mounted on said housing to allow for variations in handle and trigger switch depth. In a practical embodiment said housing is U-shaped and includes opposing wall members between the arms of said U-shaped housing to prevent escape of said electrical connector from said housing. [0011] The invention also defines a dust shroud for an abrading tool, said dust shroud including a base plate and a peripheral skirt depending therefrom, an outlet pipe opening into said base plate for extraction of abraded material, and a flexible skirt attached to the outer periphery of said depending skirt depending beyond said peripheral skirt. [0012] Preferably the dust shroud includes a clamping means to hold said flexible skirt to said depending skirt to allow for adjustment of the depth of said flexible skirt. In a practical embodiment said clamping means is a band clamp. The base plate may be circular and has a flattened segment which has a matching depending skirt part to expose said abrading tool for edging work. The dust shroud may include a separate arcuate segment having a base plate and co-operating depending skirt part, said arcuate segment co-operating with said flattened segment when edging work is not required. The co-operating depending skirt part may include a flexible skirt part. The flexible skirt has a cut out section or gap along a part of said flattened segment. [0013] In order that the invention may be more readily understood and put into practical effect, reference will now be made to the accompanying drawings, in which: [0014] FIG. 1 is a perspective view of a first embodiment of a hand tool support made in accordance with the invention attached to a grinder, [0015] FIG. 2 is a side view of the hand tool support and grinder shown in FIG. 1 in use by an operator; [0016] FIG. 3 is a plan view of the first embodiment shown in FIG. 1; [0017] FIG. 4 is a side view of the first embodiment shown in FIG. 1; [0018] FIG. 5 is a side view of a second embodiment of a hand tool support and grinder, [0019] FIG. 6 is a plan view of a third embodiment of a hand tool support and grinder; [0020] FIG. 7 is a cross-sectional view along and in the direction of arrows 7-7 shown in FIG. 6; [0021] FIG. 8 is a perspective view of an embodiment of a switch clamping device made in accordance with the invention; [0022] FIG. 9 is a side view of the switch clamping device of FIG. 8 attached to an angle grinder; [0023] FIG. 10 is a side view of the angle grinder shown in FIG. 9 fitted to a fourth embodiment of a hand tool support; [0024] FIG. 11 is a front view of FIG. 10; Continue reading about Hand tool support... Full patent description for Hand tool support Brief Patent Description - Full Patent Description - Patent Application Claims Click on the above for other options relating to this Hand tool support patent application. ###  How KEYWORD MONITOR works... a FREE service from FreshPatents1. Sign up (takes 30 seconds). 2. Fill in the keywords to be monitored. 3. Each week you receive an email with patent applications related to your keywords. Start now! - Receive info on patent apps like Hand tool support or other areas of interest. ### Previous Patent Application: Planarizing solutions including abrasive elements, and methods for manufacturing and using such planarizing solutions Next Patent Application: Reshaping fixture for carbide inserts Industry Class: Abrading ### FreshPatents.com Support Thank you for viewing the Hand tool support patent info. 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