US3772784A - Holding arrangement for motor saws - Google Patents

Holding arrangement for motor saws Download PDF

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Publication number
US3772784A
US3772784A US00080578A US3772784DA US3772784A US 3772784 A US3772784 A US 3772784A US 00080578 A US00080578 A US 00080578A US 3772784D A US3772784D A US 3772784DA US 3772784 A US3772784 A US 3772784A
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Prior art keywords
handle
housing
arrangement according
rail
plane
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Expired - Lifetime
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US00080578A
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English (en)
Inventor
R Heermann
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.)
Andreas Stihl AG and Co KG
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Andreas Stihl AG and Co KG
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    • 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
    • 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
    • B27B17/0008—Means for carrying the chain saw, e.g. handles

Definitions

  • the present invention concerns a holding device for motor saws, especially motor chain saws, with at least one handle part adapted to be grasped by a hand and with a supporting part behind said handle part.
  • the rear handle part is likewise in the shape of a handle, i.e. a handle to be grasped by a hand, so that when using the motor saw it is necessary to grasp each handle individually with one hand which means that no hand is free for any other manipulations.
  • an object of the present invention to provide a holding device of the above mentioned type in such a way that while being of simple construction, the motor saw can safely be used while being held with one hand only.
  • FIG. 1 illustrates a side view of a motor saw provided with a holding device according to the invention.
  • FIG. 2 is a top view of the motor saw of FIG. ll.
  • FIG. 3 shows the motor saw of FIG. 1 as seen from the left-hand side of FIG. 1.
  • FIG. 4 diagrammatically illustrates a further embodiment of a motor saw with a holding device according to the invention.
  • FIG. 5 shows a portion of the motor saw of FIG. 4 but with the holding device in a differently adjusted position.
  • FIG. 6 illustrates the holding device in a position which differs from that of FIG. 5.
  • FIG. 7 represents a top view of a modified motor saw according to the invention.
  • the motor saw especially motor chain saw, according to the present invention which has at least one handle part to be grasped by a hand and a holding part located behind said handle part, is characterized primarily in that the holding or supporting part located behind the handle part is designed as support with an engaging or supporting surface for the lower part of the arm of the operator.
  • the holding device of this design is grasped by the hand and when the arm engages the engaging or supporting surface of the holding part, it will be appreciated that while using only one arm, it is possible to hold the motor saw at two places spaced from each other and located one behind the other. In this way the motor saw can during all sawing operations and in all cutting directions be guided and held in a satisfactory manner while the free hand of the operator is available for whatever operation is necessary.
  • the holding device according to the present invention is particularly suitable for so-called small motor saws which have a low weight and therefore do not require great operating forces on the part of the operator.
  • the supporting surface for the lower part of the arm defines a passage the central axis of which extends in approximately the longitudinal direction of the motor saw and is in alignment with the handle part so that when the lower arm occupies a position in which its longitudinal extension is in the direction of the longitudinal axis of the motor saw, the lower arm resting in said passage permits a safe and proper handling of the saw.
  • the members defining the passage i. e. the arm support
  • the supporting member may, for instance, be designed in the form of a band loop so that a corresponding movability of the arm support is obtained. It is particularly advantageous to make the arm support rigid whereby an especially precise guiding of the motor saw will be assured.
  • the lower arm In order to make sure that when guiding the motor saw, the lower arm will be supported in any direction to the same extent by the arm support, the latter is round and preferably somewhat elliptical while the largest inner diameter of the support is in a plane transverse to the plane of the guiding rail of the motor saw.
  • a comfortable guiding of the motor saw will also be assured by providing the central axis of the holding device approximately parallel to the plane of the guiding rail of the motor saw and preferably about rectangularly with regard to the longitudinal direction of the motor saw. If the central axis of the handle is approximately at a right angle to the central axis of the above mentioned passage while preferably intersecting the latter, the wrist will be under a very slight load only.
  • the latter In order to assure that the lower arm is supported by a large surface of the arm support, the latter has an oval cross-section with the largest diameter of its opening located about parallel to the central axis of the passage.
  • the holding device according to the present invention is also suitable for working with the motor saw when using both hands.
  • behind the front handle part there may be provided a further rear handle part.
  • a very simple construction is obtained when the rear handle part is formed by the arm support. With such a design, it is possible selectively to work with one hand or with both hands.
  • the handle part and the arm support are provided on the top side of the motor saw, preferably extending in upward direction.
  • the handle may be provided at the front end of the driving unit of the motor saw whereas the arm support may be located at the rear end of the driving unit.
  • a further advantageous development of the invention consists in that the handle and/or the arm support are mounted on the motor saw through the intervention of at least one bearing adapted to dampen oscillations or vibrations. In such an instance, the shaking or vibrating of the motor saw will not or only in a dampened condition be conveyed to the handle and the arm support so that it is possible to work for a longer period of time with one hand without encountering fatigue or health damages.
  • the handle and the arm support are substantially rigidly connected to each other through the intervention of a beam which preferably is formed by a part of the housing, as for instance the cover for the driving unit.
  • This beam is journalled on the driving unit through the intervention of bearings adapted to absorb vibrations.
  • two oscillation damping bearings are provided adjacent to each other and at a right angle with regard to the plane of the guiding rail, the third bearing preferably being provided therebehind in such a manner that a particularly high precision of the location of the guiding rail with regard to the handle and the arm support will be assured.
  • the precision with regard to the guiding of the motor saw during the operation of the latter can still further be improved by locating the main degree of freedom of at least one, preferably all of oscillation damping bearings in the longitudinal direction of the motor saw and preferably at a right angle to the motor shaft thereof so that, particularly with internal combustion engines, the motor vibrations will be clamped to a great extent.
  • a simple embodiment of the oscillation or vibration damping bearings consists in that the same include elastic damping sleeves the central axes of which preferably extend at a right angle to the guiding rail.
  • each oscillation damping bearing has two damping sleeves mounted on a mandrel so that a simple assembly will be obtained.
  • the oscillation damping bearings may be arranged below the support in a protected manner, preferably in the cap-shaped support.
  • the holding device according to the invention may be arranged on motor saws with gasoline engines and also on motor saws equipped with an electric motor. Furthermore, it is possible to arrange the holding device from the very start as an integral part of the motor saw or later to equip the motor saw with such holding device while the holding device may be detachable from the motor saw as a unit.
  • the handle especially the front handle, at least one actuating member for stopping the motor saw, for controlling the gas supply, for a short circuit switch, for a chain lubricating device or the like.
  • the arrangement may, for instance, be such that for one-hand and two-hand operation separate actuating elements are provided.
  • the arrangement may be such that only the gas control can be effected with two separate handles such as gas levers.
  • the second gas lever may be arranged at the front or at the rear handle. It is, however, also possible to arrange all of the actuating members at a central location so that they can easily be actuated when the device is designed for one-hand or for twohand operation. Expediently, the actuating member is located at the lower end of the front handle. It is also possible to provide the actuating member at the upper end of the front handle and preferably to design the same in the form of a push button.
  • a protective shield or plate so that the sliding off of the hand holding said handle into the saw chain will be safely prevented.
  • a protective shield or plate so that the sliding off of the hand holding said handle into the saw chain will be safely prevented.
  • another protective device for instance a protective hood or a corresponding design of the front handle.
  • the motor saw illustrated in FIGS. 1-3 comprises a non-illustrated driving unit in the form of a combustion engine or an electric motor which is arranged in a housing 1.
  • a sword-shaped guiding rail 2 protrudes beyond the front side of said housing 1 and serves for guiding a saw chain 3, said saw chain being driven by the drive motor in housing 1.
  • the longitudinal direction of the guiding rail 2 (double arrow 4) defines the longitudinal direction of the motor saw.
  • the plane in which the center of gravity of the motor saw is located is indicated by the dot-dash line 5.
  • the top of the housing 1 is formed by a cap-shaped cover 6 which is somewhat smaller than the bottom view of the housing 1 and is concave in downward direction.
  • the lower marginal area of cover 6 is in slightly spaced relationship located above the housing 1.
  • the housing cover 6 serving as support for a front handle 7 and for an arm support 8 is, through the intervention of three vibration damping bearings 9-1 1, mounted on the top side of the housing 1.
  • the three bearings 9-11 engage the tips of an imaginary triangle 12 which is indicated by dot-dash lines in FIG. 2 and has exclusively acute angles. This triangle is located in a plane which is parallel to the upper side of housing 1.
  • This incline is such that the two planes 13 and 14 intersect at an acute angle which opens toward the free end of the guiding rail 2.
  • the front vibration damping bearings 9,10 are with regard to the plane 14 located at a higher level or at a greater distance from plane 14 than the rear bearing 11.
  • the central axes 15, 16 of all vibration damping bearings 9-11 are at a right angle with regard to the guiding rail 2 and are thus parallel to each other.
  • the two front vibration damping bearings 9, are located coaxially with regard to each other and adjacent to each other.
  • the central plane 17, which is parallel to the above mentioned plane 5 and pertains to one of the two front bearings, namely the vibration damping bearing 10, is located in the central plane 18 of guiding rail 2, which central plane 18 is parallel to the plane of said guiding rail 2.
  • Guiding rail 2 is at a right angle to its longitudinal central plane 18 eccentrically offset with regard to the driving unit in housing 1, while the vibration damping bearing 9, which is coaxial with regard to the vibration damping bearing 10, is, relative to the bearing 10, provided on the other side of plane 5.
  • the spacing between the bearing 9 and said plane 5 is, however, slightly greater than the spacing of the bearing 10 from plane 5.
  • the corresponding central plane of the rear bearing 11 is located in plane 5.
  • the mean distance of the two bearings 9, 10 adjacently located with regard to each other is less than the corresponding mean distance of each of these bearings with regard to the rear vibration damping bearing 11.
  • the front bearings 9, 10 have a greater distance from the front side 19 of the driving unit in housing 1 than the rear vibration damping bearing has from the back side 20 of said driving unit.
  • Each vibration damping bearing 9, 10, 11, has two damping sleeves 21 which flare conically and are coaxial. These sleeves 21, which are of a rubber elastic material, are arranged on a common mandrel 22 and have clamped therebetween a plate 23 which is not in engagement with the mandrel 22 but contacts only the sleeve 21.
  • the ends of the mandrel 22 are passed through two plates 24 which are located at those end faces of the two damping sleeves 21 which face away from each other.
  • the intermediate plate 23 which is at a right angle to the axes 15 and 16 of the bearing preferably forms one piece with the inner side of the housing cover 6, whereas the two plates 24 which are parallel to plate 23 are connected to the upper side of housing 1, for instance by forming one piece therewith.
  • the main degree of freedom from the damping movement of said bearings is located parallel to the longitudinal central plane 18 of the guiding rail 2.
  • a load acts in a direction perpendicularly with regard to the central plane 18 of the guiding rail 2 under which circumstances the damping sleeve 21 are under considerable pressure, an extremely slight movability only is obtained.
  • the handle 7 is connected to the top of the cover 6.
  • This handle 7 is, in the embodiment shown in the drawing, formed by a pipe 25 which is covered by a cover 26 of elastic material, said cover may have a corrugated surface.
  • the central axis 27 of said tube 25, at least that portion of the central axis 27 which pertains to the lower section of the handle 7, is located in the plane of gravity 5 of the motor saw. As shown in FIG. 1, the central axis 27 together with the longitudinal central plane 14 defines an angle which is slightly greater than and opens toward the front.
  • the upper side of the housing cover 6 is provided with a connecting flange formed by a protrusion 28.
  • This protrusion is intended for connecting the rear handle 8 designed as arm support.
  • the arm support 8 is formed by a bent ring which is detachably connected to flange 28 for instance by means of a screw 29.
  • Ring 8, similar to handle 7, is formed by a pipe with a cover and has a cross section the circumference of which corresponds to the handle 7 so that ring 8 may at any desired area be grasped by the fingers of a hand as firmly as is the case with the handle 7.
  • the cross section of ring 8 is, however, oval so that the ring has a relatively large inner surface which points to its center and defines the opening 30.
  • the shape of ring 8 is approximately elliptical while its shorter diameter is approximately rectangular with regard to the plane 13.
  • the central axis 32 of ring 8 or the opening 30 formed thereby extends parallel to the plane 13 and is located in the plane of gravity 5 so that the central axis 32 intersects the central axis 27 of the front handle 7 or is in alignment therewith.
  • the central plane 33 of ring 8 which is at a right angle with regard to axis 32 forms with plane 14 an angle which opens toward the front and which is slightly greater than 90 and is also greater than the corresponding angle between the central axis 27 and plane 14.
  • the axes 27, 32 when viewed in side view according to FIG. 1 define an angle which is slightly less than 90.
  • the lower end of handle 7 has that side thereof which faces away from the guiding rail 2 provided with a pivotable actuating lever 34.
  • lever 34 By means of lever 34 it is possible to effect the gas control of the driving engine of the motor saw with that hand which holds the handle 7.
  • the front side of housing cover 6 is provided with an upwardly pointing protective shield 35 which when viewed from the side according to FIG. 1 is angularly shaped. Shield 35 is located in front of the handle 7 and above the guiding rail 2.
  • the free width of ring 8 is so selected that it will just permit the passage of a hand or a fist. in order to operate with the motor saw according to the invention, one hand passes from the rear through the opening 31) of ring 8 and grasps the handle 7 so that ring 3 will surround the lower arm of the operator behind the wrist and in this way will furnish a support of the motor saw behind the handle 7. ln this way, the handling and working of the motor saw with one hand only will be possible.
  • the holding members 711, 8a are arranged directly on the upper side of the housing lla of the driving unit without the interposition of vibration damping bearings.
  • the arm support 8a is, in its position for one-hand operation, according to FIG. 4, rearwardly inclined in such a way that its central plane 33a together with the central axis 27a of the front handle 7a (when viewed from the side according to FIG. 4) defines an upwardly opening acute angle.
  • the central plane 33a together with the central plane 14a of the guiding rail 2a in other words, with the longitudinal direction (arrow 4) of the motor saw when viewed from the side according to FIG. 4 defines an upwardly opening angle considerably in excess of 90.
  • the upper half of the arm support 8a is surrounded by a thick layer, hose-like cushioning or upholstering 36 which may consist of soft rubber, foam rubber material or the like.
  • hose-like cushioning or upholstering 36 which may consist of soft rubber, foam rubber material or the like.
  • this cushioning 36 it will be assured that the arm support at least over half of its circumference is in an uninterrupted manner supporting the lower arm of the operator and, more specifically, substantially independently of the thickness of said lower arm.
  • the arm support 8a is pivotable about an axis 29a which is rectangular to the plane of the guiding rail 2a while the pivot axis 29a is located in the central plane 33a and directly at the upper side of housing la.
  • the arm support 8a can be pivoted toward the rear about the pivot axis 29a into the position shown in FIG. 5.
  • the arm support 8a may in any position be arrested relative to the housing 1a by any standard arresting position not shown in the drawing.
  • the arm support 8a may also be pivotally mounted on housing 1a for pivoting about an axis which is parallel to the plane of the guiding rail 2a and preferably intersecting its central axis 32a at a right angle.
  • the arm support 8a can be grasped by the second hand at its side which faces away from the front handle 7a, at a relatively great distance from the front handle 7a so that likewise favorable lever conditions are obtained.
  • the arm support 8a may in any desired pivoted position be arrested relative to the bearing 28a and housing 1a.
  • FIGS. 4 and 7 respectively illustrate in view and top view an advantageous embodiment for the front handle 7a.
  • the handle 70 has a lower shank portion 26a which is formed by an elastic cover and which for purposes of obtaining a high friction has its circumference provided with adjacent groove-like depressions or corrugations so that annular beads arranged one above the other are formed.
  • the upper end of the shank portion 26 is equipped with a knob 37 protruding beyond the circumference of the shank.
  • the knob 37 has three starlike-shaped protrusions or tongues 38 two of which are at a right angle to the guiding rail 2a, 2b and are in alignment with each other, whereas the third extension or tongue points forwardly in the direction toward the free end of the guiding rail 2a, 2b.
  • the upper end of the front handle has an actuating knob 340 which is located in the axis 27a of handle 7a and is adapted to be moved downwardly against the thrust of a spring.
  • the actuating knob 34a may be operatively connected to the carburetor and/or a short circuit switch in the ignition circuit of the driving machine, so that by actuation of the actuating knob 34a, the speed of the motor may be adjusted or the motor may be turned off.
  • the actuating knob 34a can easily be actuated by the thumb of a hand grasping the handle 7a.
  • each arm support 8b forms a yoke in such a way that when viewing in longitudinal direction of the motor saw, both arm supports 8b will form a passage for the arm which passage is closed over the circumference. It is also possible in the longitudinal direction of the motor saw to provide two completely closed rings according to FIGS. 3 and 6 or to provide other arm supports arranged one behind the other. As shown in FIG.
  • the two arm supports have their lower ends which are directed opposite to each other journalled on plates 28b on the top side of housing lb by means of bolts 29b in such a way that the two arm supports 8b can be shifted from their position for one-hand operation according to FIG. 7, toward the rear into a position for two-hand operation.
  • the invention may also be applied in a simple manner to already existing motor saws by connecting thereto a corresponding arm support or ring.
  • the holding device according to the invention is formed merely by an arm support connectable to a motor saw which arm support has a supporting surface for the arm of the operator.
  • the passage for the arm at the rear arm support may also be designed in the manner of a hose.
  • connection 39 indicated in FIG. 4 which expediently is detachably connected in the upper range of the holding member 7a and the upper range of the arm support 8a so that it will not interfere.
  • the connection established for instance by a longitudinal rod 39 which may also be provided with the design of FIG. 1 greatly increases the rigidity of the holding members 7a, 8a, and may be grasped by hand for a more comfortable carrying of the motor saw, inasmuch as in this way a rigid supporting frame is formed.
  • An arrangement for holding saws, especially motor driven chain saws having a motor housing and a saw rail projecting from one end of the housing; at leastone hand graspable handle connected to the housing near the rail end thereof, and arcuate support means connected to the housing in spaced relation to said handle and adapted for supporting engagement with the lower arm simultaneously during grasping of said handle, said arcuate support means at least in part surrounding the lower arm kept from passing entirely therethrough to assure both hand and arm support during saw operation both below and above arm level work positioning thereof, said support means defining a passage only for receiving the arm therein and being spaced from said handle, the axis of said passage extending in the direction of the length of said rail and being substantially in the plane of said handle, said support means being in the form of a substantially rigid ring.
  • each damping element comprises a pair of elastic sleeves in coaxial relation on an axis perpendicular to the plane of said rail, and a mandrel common to each said pair of sleeves.

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Sawing (AREA)
US00080578A 1969-10-16 1970-10-14 Holding arrangement for motor saws Expired - Lifetime US3772784A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19691952066 DE1952066A1 (de) 1969-10-16 1969-10-16 Haltevorrichtung fuer Motorsaegen

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US3772784A true US3772784A (en) 1973-11-20

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US00080578A Expired - Lifetime US3772784A (en) 1969-10-16 1970-10-14 Holding arrangement for motor saws

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US (1) US3772784A (xx)
AT (1) AT304849B (xx)
DE (1) DE1952066A1 (xx)
FR (1) FR2065255A5 (xx)
GB (1) GB1325751A (xx)
SE (1) SE363598B (xx)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
US4841641A (en) * 1988-02-16 1989-06-27 Laidlaw Gerry A Chain saw safety structure
US5016355A (en) * 1990-06-25 1991-05-21 Textron Inc. Vibration reducing chain saw handle
EP0428186B1 (en) * 1985-03-29 1995-01-18 Komatsu Zenoah Co. Portable engine unit
EP1020107B1 (en) * 1997-08-05 2002-10-09 Hispaes, S.L. Portable agricultural machine with attenuation of the vibrations and protection for the carrier
US20050016744A1 (en) * 2001-11-09 2005-01-27 Shigeru Miyakawa Engine braker
US20150151447A1 (en) * 2012-06-12 2015-06-04 Husqvarna Ab Electric cutting system

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9018855D0 (en) * 1990-08-29 1990-10-10 Anderson Neil A Particulate material handling implement
FR2678539B1 (fr) * 1991-07-02 1996-01-12 Wolf Outils Outil motorise portatif utilisable a deux mains, en particulier taille-haie.

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2504880A (en) * 1946-05-23 1950-04-18 Rittenhouse Charles Arm supported universal portable power tool
US3525373A (en) * 1966-12-10 1970-08-25 Kyoritsu Noki Co Ltd Chain saw
US3530909A (en) * 1968-01-18 1970-09-29 Outboard Marine Corp Elastomerically mounted chain saw
US3542095A (en) * 1968-08-05 1970-11-24 Mcculloch Corp Chain saw with vibration isolation system
US3651839A (en) * 1966-12-03 1972-03-28 Andreas Stihl Muschinenfabrik Portable motor saw

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2504880A (en) * 1946-05-23 1950-04-18 Rittenhouse Charles Arm supported universal portable power tool
US3651839A (en) * 1966-12-03 1972-03-28 Andreas Stihl Muschinenfabrik Portable motor saw
US3525373A (en) * 1966-12-10 1970-08-25 Kyoritsu Noki Co Ltd Chain saw
US3530909A (en) * 1968-01-18 1970-09-29 Outboard Marine Corp Elastomerically mounted chain saw
US3542095A (en) * 1968-08-05 1970-11-24 Mcculloch Corp Chain saw with vibration isolation system

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4670985A (en) * 1984-12-17 1987-06-09 Mcculloch Corporation Vibration mount in a chainsaw
EP0428186B1 (en) * 1985-03-29 1995-01-18 Komatsu Zenoah Co. Portable engine unit
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
US4841641A (en) * 1988-02-16 1989-06-27 Laidlaw Gerry A Chain saw safety structure
US5016355A (en) * 1990-06-25 1991-05-21 Textron Inc. Vibration reducing chain saw handle
EP1020107B1 (en) * 1997-08-05 2002-10-09 Hispaes, S.L. Portable agricultural machine with attenuation of the vibrations and protection for the carrier
US20050016744A1 (en) * 2001-11-09 2005-01-27 Shigeru Miyakawa Engine braker
US7124840B2 (en) * 2001-11-09 2006-10-24 Yamada Machinery Industrial Co., Ltd. Engine breaker
US20150151447A1 (en) * 2012-06-12 2015-06-04 Husqvarna Ab Electric cutting system
US9656336B2 (en) * 2012-06-12 2017-05-23 Husqvarna Ab Electric cutting system
US10486250B2 (en) 2012-06-12 2019-11-26 Husqvarna Ab Electric cutting system

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Publication number Publication date
DE1952066A1 (de) 1971-06-09
SE363598B (xx) 1974-01-28
GB1325751A (en) 1973-08-08
AT304849B (de) 1973-01-25
FR2065255A5 (xx) 1971-07-23

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