US3620269A - Portable chain saw with antivibration handle - Google Patents

Portable chain saw with antivibration handle Download PDF

Info

Publication number
US3620269A
US3620269A US852235A US3620269DA US3620269A US 3620269 A US3620269 A US 3620269A US 852235 A US852235 A US 852235A US 3620269D A US3620269D A US 3620269DA US 3620269 A US3620269 A US 3620269A
Authority
US
United States
Prior art keywords
core
sheath
chain saw
handle
chain
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
US852235A
Other languages
English (en)
Inventor
Alfonso Lange
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of US3620269A publication Critical patent/US3620269A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F1/00—Springs
    • F16F1/36—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers
    • F16F1/38—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers with a sleeve of elastic material between a rigid outer sleeve and a rigid inner sleeve or pin, i.e. bushing-type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27B—SAWS FOR WOOD OR SIMILAR MATERIAL; COMPONENTS OR ACCESSORIES THEREFOR
    • B27B17/00—Chain saws; Equipment therefor
    • B27B17/0033—Devices for attenuation of vibrations
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
    • F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
    • F16F15/04—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means
    • F16F15/06—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with metal springs

Definitions

  • the invention relates to portable chain saws driven by a motor having a reciprocating piston, and is particularly concemed with a handle, to be grasped by the operator, which is rigidly attached to the body of the chain saw and is constructed to dampen the vibrations from the motor to the operator.
  • the present invention overcomes the above-noted difficulties in providing a handle construction which, while providing an effective damping of the vibrations reaching the hand(s) of the operator, permits the saw to be guided reliably as to position and angle of attack against the workpiece.
  • the body of the chain saw (on which the motor unit and chain-guiding parts are fixed) has handle means which includes a core fixed rigidly (at one or preferably both ends) to the body, a sheath which surrounds the core in spaced relation and is movable relatively thereto in all radial directions, and a spacer means of elastic material interposed between and in expansive relation to both the core and the sheath, the latter being adapted to be grasped by the hand of the operator.
  • the term radial directions means radial relatively to the axis of the core, which may include several angularly related portions.
  • the yieldablc spacer means acts to absorb a significant part of the vibrations, while positioning the core relatively to the sheath, to permit good guidance of the saw relatively to its workpiece.
  • Such spacer means may take any of or a combination of several forms, such as one or more bodies of elastic, rubber or rubberlike bodies, leaf springs which are corrugated, or radially disposed expansion springs oriented in a plurality of radial directions and acting between the core and the sheath.
  • the advantage of the construction according to the invention resides principally in that the core, which is rigidly attached to the saw body, is connected to the graspable sheath only by the yieldablc spacer means, and that the said spacer means is not pressed or contracted by the hands of the operator, which pressing would cause contraction in certain directions and either affect guidance or increase transmission of vibrations in the direction in which pressure is applied.
  • a firm grasp by the hand(s) on the sheath therefore, has no cffeet on the condition of the yieldablc spacer means, and these spacer means are aflected only by the steering movements and the vibrations of the motor.
  • the graspable sheath can be extended in length, whereby torque can be easily transmitted from the sheath to the core and, hence, to the chain saw body, whereby the position and direction of movement of the saw can be controlled by the operator.
  • yieldablc spacer means is a hoselike, tubular piece formed of rubber or a synthetic, rubberlike material extending substantially the full length of the sheath.
  • cross sections of the facing surfaces of the core and sheath are preferably circular.
  • the spacer means can consist of segments (e.g., elastic rubber or rubberlike material or metallic springs) spaced apart'along the length of the sheath.
  • the spacer means may be a plurality of continuous or of axially spaced segments of solid or tubular elements positioned withinlongitudinal recesses formed by radial walls on the sheath or on the core, e.g., longitudinal ribs extending radially outwardly from the core.
  • the yieldablc spacer means are formed by leaf springs, which may be formed of corrugated sheet metal and extend (in the direction transverse to the corrugations) either parallel to the axis of the core or around it. In either case alternate rugations press against the core and the others press against the sheath.
  • the leaf springs may, especially when they surround the core, be segmented and positioned in axially spaced relation.
  • the spacer means can take the form of coiled expansion springs, which extend in different radial direction, each spring pressing outwardly against the sheath and inwardly against the core.
  • the several springs having axes in different radial directions, are arranged to produce an elastic force centering the axis of the core relatively to that of the sheath, and some of these springs may be displaced along the axis of the core, as when their axes would otherwise lie in the same transverse plane.
  • These coiled springs may be secured in sockets, e.g., formed in the core and providing abutments.
  • the sockets may be formed by smaller, tubelike guides which are fastened to the wall of the core.
  • these coiled springs have lengths which are large in relation to the diameter of the core, and therefore deep sockets are preferred.
  • the coiled springs may be provided with caps which engage the inner surface of the sheath and are slidable along said surface, to accommodate relative axial movements between the core and the sheath, the inner ends of the springs being positioned by the above-mentioned sockets in the core.
  • FIG. 1 is a plan view of a chain saw according to the invention
  • FIG. 2 is a front elevation of the saw of FIG. 1;
  • FIG. 3 is a front elevation of the principal, transverse handle, to an enlarged scale, parts appearing in section;
  • FIG. 4 is a transverse section taken on the line 4-4 of FIG.
  • FIG. 5 is a view, principally in section on the broken section line 5-5 of FIG. 6 and corfesponding to FIG. 3, showing a second embodiment of the handle;
  • FIG. 6 is a transverse section taken on the line 6-6 of FIG.
  • FIG. 7 is a view corresponding to FIG. 3 of part of a handle, showing a third embodiment
  • FIG. 8 is a transverse section taken on the line 8-8 of FIG. 7;
  • FIG. 9 is a view, partly in section, corresponding to FIG. 3, of a part of a handle, showing a fourth embodiment
  • FIG. 10 is a transverse section taken on the line 10-10 of FIG. 9;
  • FIG. 11 is an elevation of a longitudinal or pistol-grip handle, illustrating a fifth embodiment employing radially acting coiled expansion springs as the yieldable spacer means;
  • FIG. 12 is a transverse section taken on the line 12-12 of FIG. 11;
  • FIG. 13 is a section taken on the longitudinal line 13-13 of FIG. 12;
  • FIG. 14 is an elevation of a handle, corresponding to FIG. 3, showing a transverse handle according to a sixth embodiment, having a tubular core;
  • FIG. 15 is a transverse section taken on the line 15-15 of FIG. 14;
  • FIG. 16 is a section taken on the longitudinal line 16-16 of FIG. 15.
  • the portable, powered chain saw comprises a body or frame 17 which includes a projecting part 18, rigidly secured thereto, for guiding a saw chain, indicated by the chained line 19 and having saw teeth.
  • This part includes at its outer end an idling wheel 20 and (not shown), a driving gear which is mounted on the body.
  • This driving gear is coupled to the output shaft of a motor 21, such as an internal combustion engine having a reciprocating piston, movable, for example, on the axis 22.
  • the chain saw has handle means, which includes a principal handle 23, extending more or less transversely to the longitudinal direction of the part 18, usually at a small angle to the perpendicular to the length of the said part 18, and a pistol-grip handle 24 at the rear, more or less parallel to the direction of the said part and either in the same plane or offset therefrom.
  • These handles are rigidly secured to the body 17 by their cores.
  • the transverse handle 23 includes a core 25, such as a solid or, preferably, tubular member as shown, attached rigidly at both of its ends to the body 17.
  • This core is advantageously formed in a plurality, e.g., four, angularly related portions, as shown in FIGS. 2 and 3.
  • a sheath 26, extending over at least two of said portions and the connecting curved part, is situated in radially spaced relation to the core to provide an intervening space within which there is a plurality of axially spaced rings 27 of rubber or synthetic material having elastic properties. These rings press against both the core and the sheath, whereby the sheath is movable relatively to the core in all directions which are radial to the core.
  • the rings 27 can be fixed to the core at intervals to leave intervening spaces 28 and the sheath can be formed as a plurality of longitudinal sections, such as 26 and 26, joined by weldments 29, as appears in FIG. 4.
  • the assembled sheath can thereafter be covered with a suitable gripping material 30, such as synthetic rubber hose which contract when heated and is slipped over the assembled handle before the ends of the core 25 are attached to the saw body.
  • spaced rings 27 it is possible to use a continuous elastic body, also tubular in shape, the spaces 28 being then eliminated; or the spacer means may consist of a plurality of rings situated close together so as to eliminate the spaces 28.
  • the damping action of the yieldable spacer means can be varied to the desired degree by a choice of the resiliency of the elastic material, of the radial distance between the core 25 and the sheath 26, the lengths of the rings 27, and the lengths of the intervals 28.
  • the handle core 25a which is rigidly secured to the body of the chain saw, is solid and has a cross section that provides a plurality, such as four, radial walls 31 which are angularly related and extend longitudinally, to provide intervening longitudinal recesses.
  • a longitudinal, solid (or tubular, hoselike) spacer body 27a is laid into each of these recesses, in abutting relation to both the core 25a and a sheath 26a, which has a complementary section 260' attached by weldments 29a.
  • these elastic spacer bodies 271 have dimensions, when not stressed, slightly greater than the spaces containing them, so that they (like the rings 27) are under compression when the sheath 26a is attached; however, this is optional.
  • tubular sections 32 can be attached by sliding them over the ends of the core and welding.
  • the handle core 25b and sheath 26b, 26b are separated by a plurality of, such as four, longitudinal corrugated leaf springs 27b, alternate rugations of which engage the core and sheath.
  • the springs 27! which constitute the yieldable spacer means, may optionally be shaped so as to be slightly deformed when the sheath sections are joined by the weldments 29b. To prevent displacement of the springs circumferentially about the core, the latter may be formed with a longitudinal groove 33 for each spring, of width to accommodate one spring.
  • the core 25b may be tubular. It is understood that the handle is only partly shown in FIG. 7, and the core ends are rigidly secured to the saw body.
  • the fourth embodiment differs from the third embodiment principally in that the corrugated leaf springs 27c extend circumferentially about the tubular core 25c and are bands which are spaced apart along the length of the core. Again, alternate rugations press against the core 250 and the sheath, which includes sections 260 and 26: joined by weldments 29c.
  • FIGS. 11-13 show a fifth embodiment of the handle, and illustrates it as applied to the pistol-grip handle 24.
  • the handle includes a solid core 25d, which is connected rigidly at its ends to the rear of the saw body 17, and a sheath 26d, 26d having weldments 29d which sheath is spaced radially outwardly from the core.
  • the core and sheath are relatively positioned by a plurality of coiled compression springs 27d, 27d, which constitute the yieldable spacer means. These springs are suitably positioned; for example, their inner ends can lie within sockets 34 closed at their inner ends to provide abutments.
  • a pair of vertical springs 27d can be mounted coaxially at each of several positions along the core, while a pair of transverse springs 27d is mounted coaxially at various other positions. This staggering of the vertical and transverse springs permits the sockets to extend deeply into the core, whereby longer coiled springs can be used then without staggering.
  • the springs have length to be under compression when the handle is assembled.
  • the sixth embodiment shown in FIGS. 14-16 as applied to the principal transverse handle 23, also uses coiled springs 27c as the yieldable spacer means, but uses a tubular core 25.
  • tubular guides 35 which are secured, as by welding, to the wall of the core at openings therein and extend radially inwards toward an imperforate portion of the opposite core wall. Successive guides 35 along the length of the core have different orientations, e.g., apart as shown.
  • Each guide contains a coiled expansion spring 27e which preferably carries at its outer end a cap 36 having a positioning stud extending into the coil and a smooth, preferably rounded outer surface capable of sliding motion along the inner surface of a sheath 26e, 26c, which includes a weldment 29e.
  • the springs 27c preferably but optionally have lengths to be in compression when the handle is assembled.
  • caps 36 permit free sliding motion of the sheath relatively to the axes of the coiled springs.
  • Relative longitudinal motion occurs in one handle portion (e.g., part 37) when relative radial vibrations between the sheath and core occur at another part which is angularly disposed (e.g., the part 38). It may be noted that this relative longitudinal motion is possible by deformation of the spacer body 27, 27a or 27d and by sliding motion of the sheath relatively to the spacer body 27b or 270 in the earlier embodiments.
  • a portable power chain saw which comprises a saw chain. body means including a part for supporting and guiding said chain, a motor unit mounted on said body means and including a reciprocable piston connected to drive said chain, and handle means, the improvement wherein said handle means include:
  • a stilT sheath adapted to be grasped by hand which surrounds said core in spaced relation to provide an intervening space and which is movable relatively to the core in all radial directions, and
  • spacer means situated within said space for positioning the core relatively to the sheath, said spacer means comprising a plurality of elongated elastic elements situated at positions spaced along the length of the core and having their axes angularly related, each element being in abutment at one end thereof with the core and at the other end thereof with the sheath,
  • a chain saw according to claim ll wherein said core is formed to provide a plurality of sockets having abutments at their inner ends, and each of said elongated elements has one end thereof situated within one of said sockets in abutting relation to the abutment of the respective socket.
  • a chain saw according to claim 2 wherein said core is tubular in form, and each of said sockets includes a substantially radially extending tubular guide which is fixed to the tubular core.
  • each of said elongated elements has a cap interposed between the outer end of the element and the sheath and secured to the element, said caps being slidable relatively to the sheath.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)
  • Vibration Prevention Devices (AREA)
US852235A 1969-02-20 1969-08-22 Portable chain saw with antivibration handle Expired - Lifetime US3620269A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19691908451 DE1908451A1 (de) 1969-02-20 1969-02-20 Schwingungsdaempfender Handgriff fuer tragbare Kettensaegen

Publications (1)

Publication Number Publication Date
US3620269A true US3620269A (en) 1971-11-16

Family

ID=5725796

Family Applications (1)

Application Number Title Priority Date Filing Date
US852235A Expired - Lifetime US3620269A (en) 1969-02-20 1969-08-22 Portable chain saw with antivibration handle

Country Status (2)

Country Link
US (1) US3620269A (de)
DE (1) DE1908451A1 (de)

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3889763A (en) * 1973-10-31 1975-06-17 Skil Corp Vibration isolation handle for portable chain saw or the like
US4670985A (en) * 1984-12-17 1987-06-09 Mcculloch Corporation Vibration mount in a chainsaw
US4819742A (en) * 1987-06-12 1989-04-11 White Consolidated Industries, Inc. Vibration-damping control handle for a portable power tool
US4825548A (en) * 1987-03-31 1989-05-02 White Consolidated Industries, Inc. Vibration-damping control handle for a portable power tool
US4912848A (en) * 1989-01-09 1990-04-03 Textron, Inc. Power tool handle
US5016355A (en) * 1990-06-25 1991-05-21 Textron Inc. Vibration reducing chain saw handle
US5846629A (en) * 1996-05-31 1998-12-08 Lord Corporation Cushioning handle wrap for isolating vibration
RU2254984C1 (ru) * 2003-11-18 2005-06-27 Федеральное государственное унитарное предприятие "Машиностроительный завод им. Ф.Э. Дзержинского" Бензиномоторная пила
RU2261797C1 (ru) * 2004-03-09 2005-10-10 Федеральное государственное унитарное предприятие "Машиностроительный завод им. Ф.Э. Дзержинского" Бензиномоторная пила
US20080223593A1 (en) * 2007-03-14 2008-09-18 Roswitha Eicher Handle
US20110240766A1 (en) * 2010-04-05 2011-10-06 Wagner Spray Tech Corporation Vibration isolation in a handheld fluid sprayer
USD741678S1 (en) * 2012-04-13 2015-10-27 Andreas Stihl Ag & Co. Kg Chain saw for cutting stone
USD744308S1 (en) * 2012-08-02 2015-12-01 Andreas Stihl Ag & Co. Kg Chainsaw
USD763051S1 (en) 2014-04-04 2016-08-09 Andreas Stihl Ag & Co. Kg Chainsaw
USD790303S1 (en) 2015-08-06 2017-06-27 Andreas Stihl Ag & Co. Kg Cordless chainsaw
USD826021S1 (en) 2016-02-15 2018-08-21 Andreas Stihl Ag & Co., Kg Chain saw
US20230064399A1 (en) * 2021-08-26 2023-03-02 Makita Corporation Power tool
US20240001526A1 (en) * 2020-12-04 2024-01-04 Hilti Aktiengesellschaft Power tool having a first handle, a second handle, and a main body

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56138541A (en) * 1980-03-28 1981-10-29 Seikou Giken Kk Vibration absorbing structure
FR2667668B1 (fr) * 1990-10-09 1993-01-22 Framatome Sa Manchon d'amortissement du deplacement de deux organes l'un par rapport a l'autre et dispositif de supportage de la tuyauterie de sortie de vapeur d'un generateur de vapeur comportant au moins un tel manchon.
DE4335279A1 (de) * 1993-10-15 1995-04-20 Peter Engel Besteckhülle

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US786050A (en) * 1904-09-19 1905-03-28 Clarence H Richwood Fluid-actuated vibrator.
US1800254A (en) * 1926-12-18 1931-04-14 Frank J Holmes Handle and the like
US2610657A (en) * 1948-10-07 1952-09-16 Elmer C Kiekhaefer Engine driven chain saw

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US786050A (en) * 1904-09-19 1905-03-28 Clarence H Richwood Fluid-actuated vibrator.
US1800254A (en) * 1926-12-18 1931-04-14 Frank J Holmes Handle and the like
US2610657A (en) * 1948-10-07 1952-09-16 Elmer C Kiekhaefer Engine driven chain saw

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3889763A (en) * 1973-10-31 1975-06-17 Skil Corp Vibration isolation handle for portable chain saw or the like
US4670985A (en) * 1984-12-17 1987-06-09 Mcculloch Corporation Vibration mount in a chainsaw
US4825548A (en) * 1987-03-31 1989-05-02 White Consolidated Industries, Inc. Vibration-damping control handle for a portable power tool
US4819742A (en) * 1987-06-12 1989-04-11 White Consolidated Industries, Inc. Vibration-damping control handle for a portable power tool
US4912848A (en) * 1989-01-09 1990-04-03 Textron, Inc. Power tool handle
US5016355A (en) * 1990-06-25 1991-05-21 Textron Inc. Vibration reducing chain saw handle
US5846629A (en) * 1996-05-31 1998-12-08 Lord Corporation Cushioning handle wrap for isolating vibration
RU2254984C1 (ru) * 2003-11-18 2005-06-27 Федеральное государственное унитарное предприятие "Машиностроительный завод им. Ф.Э. Дзержинского" Бензиномоторная пила
RU2261797C1 (ru) * 2004-03-09 2005-10-10 Федеральное государственное унитарное предприятие "Машиностроительный завод им. Ф.Э. Дзержинского" Бензиномоторная пила
US20080223593A1 (en) * 2007-03-14 2008-09-18 Roswitha Eicher Handle
US20110240766A1 (en) * 2010-04-05 2011-10-06 Wagner Spray Tech Corporation Vibration isolation in a handheld fluid sprayer
US8813867B2 (en) * 2010-04-05 2014-08-26 Wagner Spray Tech Corporation Vibration isolation in a handheld fluid sprayer
USD741678S1 (en) * 2012-04-13 2015-10-27 Andreas Stihl Ag & Co. Kg Chain saw for cutting stone
USD744308S1 (en) * 2012-08-02 2015-12-01 Andreas Stihl Ag & Co. Kg Chainsaw
USD763051S1 (en) 2014-04-04 2016-08-09 Andreas Stihl Ag & Co. Kg Chainsaw
USD790303S1 (en) 2015-08-06 2017-06-27 Andreas Stihl Ag & Co. Kg Cordless chainsaw
USD826021S1 (en) 2016-02-15 2018-08-21 Andreas Stihl Ag & Co., Kg Chain saw
US20240001526A1 (en) * 2020-12-04 2024-01-04 Hilti Aktiengesellschaft Power tool having a first handle, a second handle, and a main body
US20230064399A1 (en) * 2021-08-26 2023-03-02 Makita Corporation Power tool
US11801594B2 (en) * 2021-08-26 2023-10-31 Makita Corporation Power tool

Also Published As

Publication number Publication date
DE1908451A1 (de) 1970-09-03

Similar Documents

Publication Publication Date Title
US4044625A (en) Vibration isolating hand grip for shank of a percussive chisel
RU2006139037A (ru) Приводной инструмент
US5692306A (en) Hand-held working tool
EP0906721B1 (de) Baumschüttler
ATE35101T1 (de) Schlaggeraet.
US4670985A (en) Vibration mount in a chainsaw
US2928444A (en) Shockless hammer
EP3375573A1 (de) Elektrisch betriebenes werkzeug
US4739674A (en) Vibration damper
JP7016948B2 (ja) 刈払機
CA1143390A (en) Vibration damper
EP1530890A1 (de) Tragbares Gerät mit gedämftem Handgriff für den Gebrauch im Garten und in der Landwirtschaft
US3911580A (en) Coaxial vibrating isolation unit for a chain saw including discrete, independently operable elements
GB2095362A (en) Vibration-damping handles
SU893516A1 (ru) Виброзащитна руко тка пневматической ручной машины
SU905072A1 (ru) Переносна моторна пила
SU946906A1 (ru) Виброизолированна ручна машина
SU1466933A1 (ru) Руко тка дл ручного механизированного инструмента
SU782991A2 (ru) Устройство дл креплени рабочего инструмента
SU440037A1 (ru) Приспособление дл удержани инструмента в устройствах ударного действи
KR830008071A (ko) 진동 댐퍼
SU1516321A1 (ru) Виброзащитна руко тка
SU138909A1 (ru) Устройство дл гашени отдачи ручного перфоратора
GB2466129A (en) Shock absorbing handle for manual tool
SU1475782A2 (ru) Переносна моторна пила