DE69811569D1 - Hydraulic hammer - Google Patents

Hydraulic hammer

Info

Publication number
DE69811569D1
DE69811569D1 DE69811569T DE69811569T DE69811569D1 DE 69811569 D1 DE69811569 D1 DE 69811569D1 DE 69811569 T DE69811569 T DE 69811569T DE 69811569 T DE69811569 T DE 69811569T DE 69811569 D1 DE69811569 D1 DE 69811569D1
Authority
DE
Germany
Prior art keywords
hammer
casing
hydraulic hammer
substance
walls
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Lifetime
Application number
DE69811569T
Other languages
German (de)
Other versions
DE69811569T2 (en
Inventor
Nello Gazza
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Socomec SA
Original Assignee
Socomec SA
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 Socomec SA filed Critical Socomec SA
Application granted granted Critical
Publication of DE69811569D1 publication Critical patent/DE69811569D1/en
Publication of DE69811569T2 publication Critical patent/DE69811569T2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D17/00—Details of, or accessories for, portable power-driven percussive tools
    • B25D17/11—Arrangements of noise-damping means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D2222/00—Materials of the tool or the workpiece
    • B25D2222/54—Plastics
    • B25D2222/69—Foamed polymers, e.g. polyurethane foam

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Percussive Tools And Related Accessories (AREA)
  • Working Measures On Existing Buildindgs (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Earth Drilling (AREA)
  • Drilling And Exploitation, And Mining Machines And Methods (AREA)
  • Saccharide Compounds (AREA)
  • Vibration Prevention Devices (AREA)
  • Building Environments (AREA)

Abstract

The hammer is meant to reduce the noise pollution produced by the vibrations generated by the work of the tool (5). This is achieved by hot-pouring a polyurethane substance (13) between coaxial walls (10, 11) of the casing (7). The substance tensions the walls and thus reduces the vibrations emitted by the casing. The hammer is used in rock and building demolition machines. <IMAGE>
DE69811569T 1997-06-12 1998-06-09 Hydraulic hammer Expired - Lifetime DE69811569T2 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT97MO000109A IT1292747B1 (en) 1997-06-12 1997-06-12 HYDRAULIC DEMOLITION HAMMER

Publications (2)

Publication Number Publication Date
DE69811569D1 true DE69811569D1 (en) 2003-04-03
DE69811569T2 DE69811569T2 (en) 2003-09-04

Family

ID=11386363

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69811569T Expired - Lifetime DE69811569T2 (en) 1997-06-12 1998-06-09 Hydraulic hammer

Country Status (5)

Country Link
EP (1) EP0884139B1 (en)
AT (1) ATE233152T1 (en)
DE (1) DE69811569T2 (en)
ES (1) ES2192719T3 (en)
IT (1) IT1292747B1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7948008B2 (en) 2007-10-26 2011-05-24 Micron Technology, Inc. Floating body field-effect transistors, and methods of forming floating body field-effect transistors
US10344861B2 (en) * 2015-04-24 2019-07-09 Caterpillar Inc. Hammer having composite piston sleeve

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3263770A (en) * 1964-10-19 1966-08-02 Atlas Copco Ab Noise deadening means for percussive tools
GB1254522A (en) * 1968-08-20 1971-11-24 Robert David Adams Devices used in vibratory or impact machines
WO1992019398A1 (en) * 1991-05-09 1992-11-12 Soundwich, Inc. Method for producing a sound-dampened automotive enclosure and article produced thereby

Also Published As

Publication number Publication date
ITMO970109A1 (en) 1997-09-12
ATE233152T1 (en) 2003-03-15
EP0884139A2 (en) 1998-12-16
EP0884139A3 (en) 1999-06-23
EP0884139B1 (en) 2003-02-26
DE69811569T2 (en) 2003-09-04
ES2192719T3 (en) 2003-10-16
IT1292747B1 (en) 1999-02-11

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition