Tool driving or impacting – Impacting devices – With means to cause or control advance of hammer head
Patent
1983-05-24
1986-07-22
Schran, Donald R.
Tool driving or impacting
Impacting devices
With means to cause or control advance of hammer head
173119, 173134, 91165, B25D 900
Patent
active
046013490
ABSTRACT:
A hydraulic pile driver including a housing having an impact weight mounted therein for reciprocating movement, the impact weight being fastened to a piston movable in a cylinder, a supply source for liquid under pressure, a supply conduit communicating with the supply source, a liquid discharge conduit, a control valve for alternatively connecting the supply and discharge conduits to a cylinder chamber at one side of the piston, whereby the piston can be moved by the liquid under pressure in a direction opposite to the direction of movement of the impact weight during the work stroke, the cylinder chamber during the work stroke of the impact weight being connected to the liquid discharge conduit. The piston at the side remote from the cylinder chamber is loaded by a second pressure medium, the overpressure of the second pressure medium being low with respect to the liquid pressure in the cylinder chamber prior to the working stroke, the overpressure being independent of the liquid pressure.
REFERENCES:
patent: 3049097 (1962-08-01), Kershaw
patent: 3200893 (1965-08-01), Leavell
patent: 3456741 (1969-07-01), James
patent: 3583499 (1971-06-01), Cordes
patent: 4187917 (1980-02-01), Bouyoucos
patent: 4367800 (1983-01-01), Arentsen
IHC Holland NV
Schran Donald R.
Wolfe James L.
LandOfFree
Hydraulic pile driver does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Hydraulic pile driver, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hydraulic pile driver will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-860947