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  Truing tool for a grindstoneUSPTO Application #: 20080020685Title: Truing tool for a grindstone Abstract: A truing tool for a grindstone (1) is intended for attachment to a universal support (3) in the form of a cylindrical rod of a grinding machine in parallel with the rotation axis of the grindstone. It has—in a holder (12) therefore—a cutting tip (13) for truing engagement with the grindstone. The holder (12) is movably connected to a yoke (10)—to be attached to the universal support (3)—by a feeding rod (14), which is rotatably supported by the yoke (10) and is in engagement with a threaded bore in the holder (12), for its movement in relation to the yoke transversely of the grindstone (1). (end of abstract)
Agent: Breiner & Breiner, L.L.C. - Alexandria, VA, US Inventor: Torgny Jansson USPTO Applicaton #: 20080020685 - Class: 451443 (USPTO) The Patent Description & Claims data below is from USPTO Patent Application 20080020685. Brief Patent Description - Full Patent Description - Patent Application Claims
TECHNICAL FIELD [0001]The present invention relates to a truing tool for a grindstone, the tool being intended for attachment to a universal support in the form of a cylindrical rod of a grinding machine in parallel with the rotation axis of the grindstone and having--in a holder therefore--a cutting tip for truing engagement with the grindstone. BACKGROUND OF THE INVENTION [0002]It is well known in the art that a grindstone rotating in a grinding machine needs truing every now and then, because its peripheral grinding surface, which should be round and planar, becomes worn and uneven by extensive use. [0003]A presently used truing tool as defined in the first paragraph of the specification provides an acceptable truing result, but the result obtained depends at least partly on manual work of the operator, both with regard to the adjustment before truing and the truing itself. [0004]Another drawback with this tool is that it comprises two separate parts, which may be lost and which makes the mounting on the machine more difficult. THE INVENTION [0005]The drawbacks with the known truing tool are obviated and a truing tool with simplified operation is according to the invention obtained in that the holder is movably connected to a yoke--which is attached to the universal support--by a threaded feeding rod, which is rotatably supported by the yoke and is in engagement with a threaded bore in the holder, for its movement in relation to the yoke transversely of the grindstone. [0006]This feeding rod may according to the invention be provided with operating knobs at its ends outside the yoke. [0007]The holder further has a transverse hole for its movable connection to the universal support. The important advantage obtained is that the holder will be guided by two "axles", namely the universal support and the feeding rod, which adds to the stability and accuracy of the tool. [0008]The cutting depth for the cutting tip is set by fine adjusting the height of the universal support over the grindstone. THE DRAWINGS [0009]The invention will be described in further detail below under reference to the accompanying drawings, in which [0010]FIG. 1 is a perspective view of a known grindstone truing tool in use, [0011]FIG. 2 is a front perspective view of a grindstone truing tool according to the invention, [0012]FIG. 3 is a rear perspective view of the tool according to the invention and illustrates its mounting, and [0013]FIG. 4 is a rear view of the tool according to the invention and illustrates its use at the truing of a grindstone. DETAILED DESCRIPTION OF AN EMBODIMENT [0014]A rotatable grindstone 1 of a grinding machine has to be trued at intervals in order to be kept fit for its intended purpose of grinding for example woodcarving tools. [0015]A known truing tool for this purpose is illustrated in FIG. 1. The tool has a U-rod 2 to be slid on a universal support or cylindrical rod 3 attached on the grinding machine in parallel with the rotation axis of the grindstone 1. The U-rod 2 can be attached to the universal support 3 by means of two lock screws 4. [0016]Also slid onto the universal support 3 between the two arms of the U-rod 2 is a holder 5, which has a through hole for the universal support. At its forward end, the holder is provided with a cutting tip 6, whereas the opposite end can be held against the U-rod 2. [0017]The cutting tip 6 consists of diamond grains embedded in a copper cylinder. The grains are positioned like "raisins in a cake". During use, the soft copper will be worn, and the diamond grains will stick out as peaks on the surface. Worn grains will after a period of time be replaced by new ones. This design gives a long life to the tip 6. [0018]In use, the intended cutting depth of the tip 6 can be determined by the position of the U-rod 2 on the universal support 3. While the grindstone 1 is rotating, the holder 5 is held against the U-rod 2 and manually moved back and forth over the grindstone 1 for obtaining a smooth surface on the grindstone. [0019]A truing tool according to the invention is shown in FIGS. 2-4. Continue reading... Full patent description for Truing tool for a grindstone Brief Patent Description - Full Patent Description - Patent Application Claims Click on the above for other options relating to this Truing tool for a grindstone 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 Truing tool for a grindstone or other areas of interest. ### Previous Patent Application: Wafer clamping device for a double side grinder Next Patent Application: Electric hand-held power tool Industry Class: Abrading ### FreshPatents.com Support Thank you for viewing the Truing tool for a grindstone patent info. IP-related news and info Results in 4.55781 seconds Other interesting Feshpatents.com categories: Accenture , Agouron Pharmaceuticals , Amgen , AT&T , Bausch & Lomb , Callaway Golf |
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