FI911690A - Hydraulic impact hammer - Google Patents

Hydraulic impact hammer Download PDF

Info

Publication number
FI911690A
FI911690A FI911690A FI911690A FI911690A FI 911690 A FI911690 A FI 911690A FI 911690 A FI911690 A FI 911690A FI 911690 A FI911690 A FI 911690A FI 911690 A FI911690 A FI 911690A
Authority
FI
Finland
Prior art keywords
protective cap
counterpart
wall
impact hammer
damping element
Prior art date
Application number
FI911690A
Other languages
Finnish (fi)
Swedish (sv)
Other versions
FI90839B (en
FI90839C (en
FI911690A0 (en
Inventor
Ilkka Jaervinen
Tauno Haapasaari
Timo Sippus
Original Assignee
Outokumpu Oy
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Outokumpu Oy filed Critical Outokumpu Oy
Priority to FI911690A priority Critical patent/FI90839C/en
Publication of FI911690A0 publication Critical patent/FI911690A0/en
Publication of FI911690A publication Critical patent/FI911690A/en
Publication of FI90839B publication Critical patent/FI90839B/en
Application granted granted Critical
Publication of FI90839C publication Critical patent/FI90839C/en

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Landscapes

  • Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
  • Earth Drilling (AREA)
  • Percussive Tools And Related Accessories (AREA)

Abstract

The invention relates to a hydraulic percussion hammer, around the percussion part of which a protective cap 1 has been fitted. Inside the protective cap 1 there has further been arranged at least one damping element 2,3,4,5, made from elastic material, for the damping of noise generated by the percussion hammer. According to the invention, at least one counterpart 7 has been connected to the damping element to produce connection contact between the counterpart 7 and the wall of the protective cap 1, so that the damping element 2,3,4,5 can be pressed, by means of at least one connecting member 11 constituting the connection between the counterpart 7 and the wall of the protective cap 1, against the wall of the protective cap 1. <IMAGE>
FI911690A 1991-04-09 1991-04-09 Hydraulic hammer FI90839C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FI911690A FI90839C (en) 1991-04-09 1991-04-09 Hydraulic hammer

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI911690 1991-04-09
FI911690A FI90839C (en) 1991-04-09 1991-04-09 Hydraulic hammer

Publications (4)

Publication Number Publication Date
FI911690A0 FI911690A0 (en) 1991-04-09
FI911690A true FI911690A (en) 1992-10-10
FI90839B FI90839B (en) 1993-12-31
FI90839C FI90839C (en) 1994-04-11

Family

ID=8532274

Family Applications (1)

Application Number Title Priority Date Filing Date
FI911690A FI90839C (en) 1991-04-09 1991-04-09 Hydraulic hammer

Country Status (1)

Country Link
FI (1) FI90839C (en)

Also Published As

Publication number Publication date
FI90839B (en) 1993-12-31
FI90839C (en) 1994-04-11
FI911690A0 (en) 1991-04-09

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Legal Events

Date Code Title Description
BB Publication of examined application
PC Transfer of assignment of patent

Owner name: BRETEC OY

MM Patent lapsed