| YG-1 CO., LTD. Patent applications |
| Patent application number | Title | Published |
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| 20120230789 | COMPOUND RELIEF TAP - The present disclosure is directed toward a compound relief tap, and more specifically, to a compound relief tap with domains made of a plurality of consecutive threads where each domain has different properties associated with variable thread parameters and variable geometrical arrangements such a variation of a taper angle and relief angles for different portions of domain threads or between domains. In a first embodiment, all of the threads in a domain have a given geometrical arrangement. In a second embodiment, several of the threads of the domain possess the geometrical arrangement. In a third embodiment, only the thread of the domain possesses the geometrical arrangement. And in a fourth embodiment, alternative threads in the domain possess the geometrical arrangement. What is also contemplated is a variation in geometrical arrangement between successive domains for any of these threaded domains. | 09-13-2012 |
| 20110076107 | Tap with Dual Relief Technology - The present disclosure is directed to a dual technology relief tap, and more specifically, to a relief tap where a segment on the threaded portion has a first type of relief and the remainder of the threads have a second type of relief or a concentric thread to limit tilt and loosening and ultimately to prevent overfeed or underfeed. In some embodiments, a neutral, negative, positive, convex, or other type of relief is applied generally to most of the threaded portion with or without concentric threads, and a second type of relief of any type, such as a neutral, a negative, a positive, a convex, or other relief, is applied to some selected threads. In another embodiment, the second type of relief is applied to the first threads after the chamfer or are spaced regularly over the threaded surface. | 03-31-2011 |
| 20090074526 | Compound Relief Tap - The present disclosure is directed toward a compound relief tap, and more specifically, to a compound relief tap with domains made of a plurality of consecutive threads where each domain has different properties associated with variable thread parameters and variable geometrical arrangements such a variation of a taper angle and relief angles for different portions of domain threads or between domains. In a first embodiment, all of the threads in a domain have a given geometrical arrangement. In a second embodiment, several of the threads of the domain possess the geometrical arrangement. In a third embodiment, only the thread of the domain possesses the geometrical arrangement. And in a fourth embodiment, alternative threads in the domain possess the geometrical arrangement. What is also contemplated is a variation in geometrical arrangement between successive domains for any of these threaded domains. | 03-19-2009 |
