发明名称 |
Self-tapping screw and screwed fastening as well as blank for manufacturing the screw |
摘要 |
A thread-forming screw comprising, at least in part, a shaft (1.1) provided with a screw thread (2) and further comprising a screw tip (1.2) at one end of the shaft (1.1), wherein the shaft (1.1) comprises a thread-forming screw-threaded portion (4) that extends away from the screw tip (1.2) and an adjoining load-bearing screw-threaded portion (3), wherein the load-bearing screw-threaded portion (3) has a round cross-section, characterized in that the load-bearing screw-threaded portion (3) displays, in the direction away from the screw tip (1.2), an increase d in a flank diameter DF and/or an outside diameter DA of the screw thread at a gradient of from 1:50 to 1:500 based on a length LG of the load-bearing screw-threaded portion (3), preferably at a gradient DA or DF to LG of from 1:100 to 1:400, wherein the increase d in the flank diameter DF and/or the outside diameter DA remains constant over the length LG of the load-bearing portion. |
申请公布号 |
US9157467(B2) |
申请公布日期 |
2015.10.13 |
申请号 |
US201213877635 |
申请日期 |
2012.07.03 |
申请人 |
Baier & Michels GmbH & Co. KG |
发明人 |
Ambros Olaf |
分类号 |
F16B25/00;F16B35/04;F16B25/10 |
主分类号 |
F16B25/00 |
代理机构 |
Mannava & Kang, P.C. |
代理人 |
Mannava & Kang, P.C. |
主权项 |
1. A thread-forming screw comprising, at least in part, a shaft provided with a screw thread and further comprising a screw tip at one end of the shaft, wherein the shaft comprises a thread-forming screw-threaded portion that extends away from the screw tip and an adjoining load-bearing screw-threaded portion, wherein the load-bearing screw-threaded portion has a round cross-section, wherein the load-bearing screw-threaded portion includes, in a direction away from the screw tip, an increase in at least one of a flank diameter DF and an outside diameter DA of the screw thread at a gradient of approximately 1:100 to 1:500 based on a length LG of the load-bearing screw-threaded portion, wherein the increase in at least one of the flank diameter DF and the outside diameter DA remains constant over the length LG of the load-bearing portion. |
地址 |
Ober-Ramstadt DE |