ATE120998T1 - SOUND-INSUFFICIENT TOOL HOLDER FOR COMPRESSED AIR-OPERATED OR HYDRAULIC-OPERATING IMPACT AND DRILL HAMMERS. - Google Patents

SOUND-INSUFFICIENT TOOL HOLDER FOR COMPRESSED AIR-OPERATED OR HYDRAULIC-OPERATING IMPACT AND DRILL HAMMERS.

Info

Publication number
ATE120998T1
ATE120998T1 AT91111476T AT91111476T ATE120998T1 AT E120998 T1 ATE120998 T1 AT E120998T1 AT 91111476 T AT91111476 T AT 91111476T AT 91111476 T AT91111476 T AT 91111476T AT E120998 T1 ATE120998 T1 AT E120998T1
Authority
AT
Austria
Prior art keywords
sound
tool
hammers
retaining
hydraulic
Prior art date
Application number
AT91111476T
Other languages
German (de)
Inventor
Bernhard Guethling
Original Assignee
Ecoair Drucklufttechnik
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 Ecoair Drucklufttechnik filed Critical Ecoair Drucklufttechnik
Application granted granted Critical
Publication of ATE120998T1 publication Critical patent/ATE120998T1/en

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

Abstract

In pneumatically or hydraulically powered impact or drilling tools with open retaining cap (2), the sound of the piston percussion on the working tool (4) - chisel or drill rod - passes unhindered and without attenuation through the latter into the open. Through the installation of sound-reflecting and sound-absorbing devices, a noise level is to be reached which corresponds to pneumatic hammers with closed retaining cap and sound-insulating casing. A bush (14) of wear-resistant and sound-absorbing material in which a multiplicity of apertures (14a) are arranged continuously to the inside on its outer periphery has been developed for this purpose. These sound-insulating bushes are fastened between the retaining cap (2), the retaining pawl (3) and the tool-holder cylinder (5) in the case of pneumatic hammers or in the area of the front cylinder and the tool retaining clip in the case of drilling hammers. The push-in tool (4) moves inside the sound-insulating bush (14) encasing it. <IMAGE>
AT91111476T 1991-07-10 1991-07-10 SOUND-INSUFFICIENT TOOL HOLDER FOR COMPRESSED AIR-OPERATED OR HYDRAULIC-OPERATING IMPACT AND DRILL HAMMERS. ATE120998T1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP91111476A EP0522190B1 (en) 1991-07-10 1991-07-10 Sound attenuated chuck for hydraulically or pneumatically powered impact- and drillhammers

Publications (1)

Publication Number Publication Date
ATE120998T1 true ATE120998T1 (en) 1995-04-15

Family

ID=8206921

Family Applications (1)

Application Number Title Priority Date Filing Date
AT91111476T ATE120998T1 (en) 1991-07-10 1991-07-10 SOUND-INSUFFICIENT TOOL HOLDER FOR COMPRESSED AIR-OPERATED OR HYDRAULIC-OPERATING IMPACT AND DRILL HAMMERS.

Country Status (3)

Country Link
EP (1) EP0522190B1 (en)
AT (1) ATE120998T1 (en)
DE (1) DE59105188D1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19731732C2 (en) * 1997-07-23 2001-02-22 Wacker Werke Kg Impact device for striking jammed objects

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3783970A (en) * 1972-06-07 1974-01-08 Thor Power Tool Co Sound attenuating device for a work steel or the like
FI60514C (en) * 1978-07-04 1982-02-10 Tampella Oy Ab LJUDDAEMPARE FOER BORRMASKIN
DE8916049U1 (en) * 1989-02-21 1993-03-04 Ecoair Drucklufttechnik Gmbh, 4690 Herne, De

Also Published As

Publication number Publication date
EP0522190B1 (en) 1995-04-12
DE59105188D1 (en) 1995-05-18
EP0522190A1 (en) 1993-01-13

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Legal Events

Date Code Title Description
EEIH Change in the person of patent owner
REN Ceased due to non-payment of the annual fee