| 发明名称 |
Fastener installation tool |
| 摘要 |
A fastener installation tool for installing a fastener by gripping and drawing back a stem of the fastener comprises a hydraulic cylinder, and a hydraulic piston assembly located in the hydraulic cylinder for use in drawing back the stem of a fastener. The hydraulic piston assembly comprises an elongate draw part and a separate hollow piston part mounted on the elongate draw part such that the elongate draw part extends at least partly through the hollow piston part. The elongate draw part and the hollow piston part are formed from different materials. |
| 申请公布号 |
US9492862(B2) |
申请公布日期 |
2016.11.15 |
| 申请号 |
US201514883924 |
申请日期 |
2015.10.15 |
| 申请人 |
Avdel UK Limited |
发明人 |
King Richard |
| 分类号 |
B21J15/20;B21J15/18;B21J15/30;B21J15/04;B21J15/22;B21J15/10;B21J15/32 |
主分类号 |
B21J15/20 |
| 代理机构 |
|
代理人 |
Schulterbrandt Kofi A.;Leary Michael P. |
| 主权项 |
1. A fastener installation tool for installing a fastener by gripping and drawing back a stem of the fastener, comprising a hydraulic cylinder, and a hydraulic piston assembly located in the hydraulic cylinder for use in drawing back the stem of a fastener, the hydraulic piston assembly characterised by comprising an elongate draw part of first tensile strength and a separate hollow piston part of second tensile strength, which hollow piston part is mounted on the elongate draw part such that the elongate draw part extends at least partly therethrough, wherein the elongate draw part and the hollow piston part are formed from different materials and wherein the hollow piston part provides substantially the entire hydraulic fluid contacting piston surface of the hydraulic piston assembly. |
| 地址 |
Hertfordshire GB |
