SE7409351L - - Google Patents

Info

Publication number
SE7409351L
SE7409351L SE7409351A SE7409351A SE7409351L SE 7409351 L SE7409351 L SE 7409351L SE 7409351 A SE7409351 A SE 7409351A SE 7409351 A SE7409351 A SE 7409351A SE 7409351 L SE7409351 L SE 7409351L
Authority
SE
Sweden
Prior art keywords
housing
casing
space
piston
compressed air
Prior art date
Application number
SE7409351A
Other languages
Unknown language ( )
Other versions
SE405456B (en
Inventor
N A Klushin
P A Maslakov
V P Kotov
Original Assignee
Inst Gornogo Dela Sibirskogo O
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 Inst Gornogo Dela Sibirskogo O filed Critical Inst Gornogo Dela Sibirskogo O
Publication of SE7409351L publication Critical patent/SE7409351L/
Publication of SE405456B publication Critical patent/SE405456B/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
    • B25D17/24—Damping the reaction force
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L21/00—Use of working pistons or pistons-rods as fluid-distributing valves or as valve-supporting elements, e.g. in free-piston machines

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Percussive Tools And Related Accessories (AREA)

Abstract

A tool comprises a casing accommodating a housing for axial movement therein. There is provided a main piston mounted in the casing for axially moving therewith. The main piston is received in a space in the housing which is in constant communication with a compressed air source. The compressed air pressure in said space results in the development of a force applied to the casing so as to urge it away from the housing. There is also provided a hammer piston moving in the housing. The distinguishing feature of the tool consists in the fact that there is provided, on the hammer piston, an additional piston received in said space. During the operation of the tool the housing and the hammer piston perform, under the action of compressed air, reciprocations in the antiphase relation therebetween so that the changes in the volume of said space caused by the reciprocations of the housing are compensated for by the reciprocations of the additional piston, whereby the pressure fluctuations of the compressed air in the space are reduced, thereby lowering vibration at the casing and handle. The tool may be alternatively made with the main piston mounted in the casing to move together with the housing.
SE7409351A 1973-10-30 1974-07-17 WITH EFFECTIVE WORKING PNEUMATIC HAND TOOL SE405456B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU1963901A SU529071A1 (en) 1973-10-30 1973-10-30 Pneumatic percussion machine

Publications (2)

Publication Number Publication Date
SE7409351L true SE7409351L (en) 1975-05-02
SE405456B SE405456B (en) 1978-12-11

Family

ID=20565872

Family Applications (1)

Application Number Title Priority Date Filing Date
SE7409351A SE405456B (en) 1973-10-30 1974-07-17 WITH EFFECTIVE WORKING PNEUMATIC HAND TOOL

Country Status (8)

Country Link
US (1) US3892280A (en)
AT (1) AT356032B (en)
CA (1) CA1008318A (en)
FR (1) FR2248913B1 (en)
GB (1) GB1432504A (en)
IN (1) IN140536B (en)
SE (1) SE405456B (en)
SU (1) SU529071A1 (en)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4303002A (en) * 1978-01-31 1981-12-01 Maslakov Petr A Hand-operated pneumatic impact machine
GB2129733A (en) * 1982-10-27 1984-05-23 Jean Walton More-vibration-free concrete breakers and percussion drills
DE3390500C2 (en) * 1983-06-29 1988-05-11 Inst Gornogo Dela Sibirskogo O Portable impact tool with compressed air drive and vibration damping
JPS6190883A (en) * 1984-10-12 1986-05-09 日東工器株式会社 Buffer device for pneumatic pressure type impact tool, etc.
SE460349B (en) * 1988-02-22 1989-10-02 Toernqvist Peter J T FORMING AND MOVING MOVEMENT ALREADY APPLIANCES WITH TWO FRIENDS
GB9017474D0 (en) * 1990-08-09 1990-09-26 Bsp Int Foundation Device
US5044254A (en) * 1991-02-01 1991-09-03 Coltene/Whaldent, Inc. Reciprocating air motor
US6364032B1 (en) * 2000-03-07 2002-04-02 Action Machinery Company Of Alabama, Inc. Hand held apparatus for fracturing risers from castings
SE528471C2 (en) * 2004-07-05 2006-11-21 Atlas Copco Constr Tools Ab Vibration dampening striking tool with compressed air supply means
US7540336B2 (en) * 2005-06-02 2009-06-02 M-B-W Inc. Vibration isolator for a pneumatic pole or backfill tamper
DE102006029768A1 (en) * 2006-06-27 2008-01-03 Koch Transporttechnik Gmbh Method and device for producing a coal cake for coking
JP2008012661A (en) 2006-07-01 2008-01-24 Black & Decker Inc Beat piece wear indicator for hammer drill
US7401661B2 (en) 2006-07-01 2008-07-22 Black & Decker Inc. Lubricant pump for powered hammer
AU2007202968A1 (en) * 2006-07-01 2008-01-17 Black & Decker, Inc. A pavement breaker
EP1872913B1 (en) * 2006-07-01 2015-08-19 Black & Decker, Inc. A tool holder for a hammer apparatus
US7413026B2 (en) * 2006-07-01 2008-08-19 Black & Decker Inc. Lubricant system for powered hammer
US20080006419A1 (en) * 2006-07-01 2008-01-10 Black & Decker Inc. Tool holder connector for powered hammer
US7681658B2 (en) * 2007-11-06 2010-03-23 Maurice DUVAL Pneumatic impact tool

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1144838A (en) * 1914-06-06 1915-06-29 Johann Friedrich Wilhelm Griese Hand-rammer operated by compressed air.
US2837029A (en) * 1954-09-14 1958-06-03 United States Steel Corp Hydraulic subsurface pump and motor
US3456744A (en) * 1967-11-24 1969-07-22 Samuel Altschuler Vibrationless pneumatic tool
CS149009B1 (en) * 1971-02-01 1973-05-24

Also Published As

Publication number Publication date
DE2420906A1 (en) 1975-05-22
FR2248913A1 (en) 1975-05-23
CA1008318A (en) 1977-04-12
DE2420906B2 (en) 1977-05-18
SU529071A1 (en) 1976-09-25
AT356032B (en) 1980-04-10
IN140536B (en) 1976-11-27
US3892280A (en) 1975-07-01
FR2248913B1 (en) 1977-10-07
ATA301774A (en) 1979-08-15
SE405456B (en) 1978-12-11
GB1432504A (en) 1976-04-22

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