发明名称 Pneumatically operated double action file driver - has driver and pistons located over pile, and lift action and bolt head drop action both driving pile
摘要 The sleeve (2) of the pile driver is mounted over the stake (1). Within this sleeve, a driving head (4) can move up and down. The driving head is connected to the sleeve by pneumatically powered pistons (17) mounted vertically on the sleeve. When the pistons are operated, the action of lifting the head, causes a piling reaction, and the fall of the head causes a second pile action. USE/ADVANTAGE - Especially suitable for driving vine stakes.
申请公布号 DE4118665(A1) 申请公布日期 1992.12.10
申请号 DE19914118665 申请日期 1991.06.07
申请人 BEYER, HANS GUENTER, 6530 BINGEN, DE 发明人 BEYER, HANS GUENTER, 6530 BINGEN, DE
分类号 A01G17/16;E02D7/04;E04H17/26 主分类号 A01G17/16
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