发明名称 |
RUBBER SPRING FOR FURROW OPENER |
摘要 |
A pre-stressed columnar rubber spring interposed between the pressure beam and pivoted draw bar tube of a no-till seed drill deflects under load in one direction only and the force causing increased spring deflection in the principle operational range increases to a desired maximum and then remains substantially constant or decreases slightly thereby relieving the machine of excess stresses caused by contact of coulters and openers with rocks and other field obstructions. |
申请公布号 |
GB2119615(A) |
申请公布日期 |
1983.11.23 |
申请号 |
GB19820035749 |
申请日期 |
1982.12.15 |
申请人 |
* LILLISTON CORPORATION |
发明人 |
ARTHUR J * FORD;PATRICK * KUHN;WILLIAM D * LONG |
分类号 |
A01C5/06;(IPC1-7):01C7/08 |
主分类号 |
A01C5/06 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|