Global Patent Index - EP 2924171 B1

EP 2924171 B1 20160713 - Pile driving hammer

Title (en)

Pile driving hammer

Title (de)

Rammhammer

Title (fr)

Marteau batteur

Publication

EP 2924171 B1 20160713 (DE)

Application

EP 14162394 A 20140328

Priority

EP 14162394 A 20140328

Abstract (en)

[origin: CN104947667A] A pile hammer includes a cylinder (1); a piston (2) displaceably guided in the cylinder (1); a striker (3) displaceably guided in the cylinder (1) and disposed underneath the piston (2) in the operating position of the pile hammer; a combustion chamber (12) delimited axially by a face surface (30) of the striker (3) that lies in the interior of the cylinder (1) and by a face surface (21) of the piston (2); and at least one fuel feed device, through which a predetermined amount of fuel can be introduced into the combustion chamber (12) during each work cycle. The pile hammer is characterized in that the piston (2) has a cavity (24) that is filled, at least in part, with a movable filler.

IPC 8 full level

E02D 7/12 (2006.01)

CPC (source: EP US)

E02D 7/125 (2013.01 - EP US)

Designated contracting state (EPC)

AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

DOCDB simple family (publication)

EP 2924171 A1 20150930; EP 2924171 B1 20160713; CN 104947667 A 20150930; US 2015275458 A1 20151001

DOCDB simple family (application)

EP 14162394 A 20140328; CN 201510138543 A 20150327; US 201514663549 A 20150320