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  Sanding apparatus for a sanding machineUSPTO Application #: 20070037498Title: Sanding apparatus for a sanding machine Abstract: A sanding device for a sanding machine includes a carrier, a sanding element and at least two coupling elements with which the sanding element is coupled to the carrier. A movable connection is provided between the sanding element and the carrier, and the ends of the coupling elements coupled to the sanding element may move relative to each other during sanding. Furthermore, a sanding device for a sanding machine includes a carrier, a sanding element and at least one coupling element with which the sanding element is coupled to the carrier. The coupling element is connected to a base, and the base is connected releasably and rotatably to the carrier. (end of abstract)
Agent: Kenyon & Kenyon LLP - New York, NY, US Inventor: Antonie Johannes Moorlenaar USPTO Applicaton #: 20070037498 - Class: 451356000 (USPTO) Related Patent Categories: Abrading, Frame Or Mount, Portable Abrader, Reciprocating Tool The Patent Description & Claims data below is from USPTO Patent Application 20070037498. Brief Patent Description - Full Patent Description - Patent Application Claims
FIELD OF THE INVENTION [0001] The present invention relates to a sanding device for a sanding machine, which may include a carrier, a sanding element and at least two coupling elements with which the sanding element is coupled to the carrier, wherein a movable connection is provided between the sanding element and the carrier. BACKGROUND INFORMATION [0002] Such a sanding device is described in PCT International Published Patent Application No. WO 96/34721. In this sanding device, a sanding element is connected via two pivot arms to a carrier which is releasably connected to the sanding sole of a sanding machine. The sanding element consists of a flexible support plate with pads to which a piece of sandpaper is fixed. On one side the pivot arms are mounted pivotally on the support plate and on the other arranged slidably in slotted holes in the carrier. The ends of the pivot arms can be fixed in the slotted holes via nuts. For sanding purposes the curvature of the support plate is adjusted as desired by sliding the pivot arm ends in the slotted holes and fixed in place by tightening the nuts. The sanding element thus has a fixed position during sanding. [0003] A drawback of this sanding device is that it may be a relatively complex construction, while the degree of flexibility may be very limited, particularly during sanding of surfaces with a radius of curvature. SUMMARY [0004] An example embodiment of the present invention may provide a sanding device, the construction of which is simpler and more suitable for sanding surfaces with different radii of curvature. [0005] Ends of the coupling elements coupled to the sanding element may move relative to each other during sanding. [0006] The coupling elements only support the sanding element at the ends. In the center of the sanding element, the sanding element is not supported, so that it is sufficiently flexible. Because these ends of the coupling elements may move relative to each other, the radius of curvature on the surface for sanding may be adjusted during sanding. [0007] The coupling elements may themselves be flexible in order to provide the desired movement. It is, however, also possible for the coupling elements to be hingedly connected to the carrier. Both variants may also be combined. [0008] The device may include a device for urging the coupling elements apart at least at the position of the sanding element. An additional tensioning force is hereby generated in the sanding element, whereby the normal force to be exerted by the sanding element, and thereby the sanding force, is greater. [0009] Since it is expected that in practice such a sanding device will usually be used to sand round surfaces such as pipes, it is attractive when the sanding surface may curve in accordance with a cylinder, this being facilitated by the measure that the sanding element is connected to two coupling elements and that the connecting lines between the coupling elements on the one hand and the sanding element on the other extend substantially parallel. [0010] The sanding element may include a flexible supporting element connected fixedly to the coupling elements, for the purpose of supporting a sheet of sandpaper for connecting thereto. The supporting element connected fixedly to the coupling elements is, for example, formed by a piece of fabric or other flexible material, which may be provided with Velcro material for attaching a sheet of sandpaper or sand cloth thereto. This sandpaper or sand cloth may need to be provided with mating Velcro material. It is otherwise also possible to make use of a supporting element into which the Velcro material is already integrated. [0011] The coupling elements may be connected to a base, and the base may be releasably connected to the carrier. [0012] The sanding element may have the form of a closed sanding belt which extends around the combination of coupling elements and base. It hereby becomes possible to make use of annular belts of sanding material, wherein these may be mounted with a simple operation. The use of a support for the sandpaper or sand cloth between the coupling elements may be unnecessary here. Replacement of the sandpaper may be easier. [0013] The base may be connected releasably and rotatably to the carrier in order to facilitate sanding. In addition to rotation of the sanding element, this measure provides the option of exchanging the sanding element, together with the base and the coupling elements, for a similar combination with a different configuration or shape. Other processing elements may moreover be placed, such as a rigid sanding element or an element adapted to carry out a process other than sanding. [0014] In addition, the base may be releasable in at least one angular position of the carrier. Use is, for example, made of a configuration of a bayonet fitting, wherein the fitting is in the locked position in an active position of the sanding element. [0015] The present invention further relates to a sanding machine that includes a sanding sole and a sanding device, wherein the carrier of the sanding device may be formed by the sanding sole of the sanding machine or the sanding device may be releasably connected to the sanding sole of the sanding machine. [0016] Example embodiments of the present invention are explained in more detail below with reference to the appended Figures. BRIEF DESCRIPTION OF THE DRAWINGS [0017] FIG. 1 is a schematic perspective view of a sanding machine according to an example embodiment of the present invention. [0018] FIG. 2 is a detail view with exploded parts of a part of the sanding machine illustrated in FIG. 1. [0019] FIG. 3 is a schematic perspective view of a sanding machine according to an example embodiment of the present invention. [0020] FIG. 4 is a detail view with exploded parts of a part of the sanding machine illustrated in FIG. 3. Continue reading... Full patent description for Sanding apparatus for a sanding machine Brief Patent Description - Full Patent Description - Patent Application Claims Click on the above for other options relating to this Sanding apparatus for a sanding machine 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. 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