EP0428186B1 - Tragbares Motoraggregat - Google Patents

Tragbares Motoraggregat Download PDF

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Publication number
EP0428186B1
EP0428186B1 EP90125124A EP90125124A EP0428186B1 EP 0428186 B1 EP0428186 B1 EP 0428186B1 EP 90125124 A EP90125124 A EP 90125124A EP 90125124 A EP90125124 A EP 90125124A EP 0428186 B1 EP0428186 B1 EP 0428186B1
Authority
EP
European Patent Office
Prior art keywords
engine
housing
clutch
vibration
engine unit
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
EP90125124A
Other languages
English (en)
French (fr)
Other versions
EP0428186A1 (de
Inventor
Tetsuo Ueno
Katsumi Kiyooka
Hideko Inomata
Akira Gamoh
Keiko 7-1202 Sakuragaoka-Danchi Iramina
Takashi Ooniwa
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.)
Komatsu Zenoah Co
Original Assignee
Komatsu Zenoah Co
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
Priority claimed from JP60063815A external-priority patent/JPS61224910A/ja
Priority claimed from JP4495185U external-priority patent/JPS61162558U/ja
Priority claimed from JP60063814A external-priority patent/JPS61226526A/ja
Priority claimed from JP1985057412U external-priority patent/JPH048252Y2/ja
Priority claimed from JP5741385U external-priority patent/JPS61173741U/ja
Priority claimed from JP1985061849U external-priority patent/JPH064037Y2/ja
Priority claimed from JP1985061846U external-priority patent/JPH048253Y2/ja
Priority claimed from JP1985061845U external-priority patent/JPH0332737Y2/ja
Priority to EP90125124A priority Critical patent/EP0428186B1/de
Application filed by Komatsu Zenoah Co filed Critical Komatsu Zenoah Co
Publication of EP0428186A1 publication Critical patent/EP0428186A1/de
Publication of EP0428186B1 publication Critical patent/EP0428186B1/de
Application granted granted Critical
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/002—Apparatus adapted for particular uses, e.g. for portable devices driven by machines or engines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N1/00—Silencing apparatus characterised by method of silencing
    • F01N1/08—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B63/00—Adaptations of engines for driving pumps, hand-held tools or electric generators; Portable combinations of engines with engine-driven devices
    • F02B63/02—Adaptations of engines for driving pumps, hand-held tools or electric generators; Portable combinations of engines with engine-driven devices for hand-held tools
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F1/00—Cylinders; Cylinder heads 
    • F02F1/002—Integrally formed cylinders and cylinder heads
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F1/00—Cylinders; Cylinder heads 
    • F02F1/18—Other cylinders
    • F02F1/22—Other cylinders characterised by having ports in cylinder wall for scavenging or charging
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F11/00—Arrangements of sealings in combustion engines 
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2230/00—Combination of silencers and other devices
    • F01N2230/06—Spark arresters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2590/00—Exhaust or silencing apparatus adapted to particular use, e.g. for military applications, airplanes, submarines
    • F01N2590/06—Exhaust or silencing apparatus adapted to particular use, e.g. for military applications, airplanes, submarines for hand-held tools or portables devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/06—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for extinguishing sparks
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B75/00—Other engines
    • F02B75/02—Engines characterised by their cycles, e.g. six-stroke
    • F02B2075/022—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle
    • F02B2075/025—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle two

Definitions

  • the present invention relates to a portable engine unit, and more particularly to a portable engine unit applicable for a weed cutter, snow blower, etc., according to the preamble of claim 1.
  • a portable engine unit comprising an engine including a clutch, a crankcase enclosing a crank shaft, which is to be connected to an output shaft, an engine cylinder having a piston and a piston rod, a carburetor, an air filter, a recoil starter, a muffler, a housing for enclosing said engine, and means for isolating the housing from vibration caused by the engine, the engine being fitted while the vibration isolating means, and the vibration isolating means including at least four members.
  • vibration isolating members The position of these members according to SE-B-391 472 are disposed in one flat plane. Accordingly, although the vibration isolating members have a certain thickness, these vibration isolating members are arranged essentially in a two-dimensional area, being faced toward horizontal directions.
  • the polyhetral range includes at least of one tetrahedral range.
  • FIGs 1 to 3 show the external view of the weed cutter.
  • An engine 1 (Fig. 4) is enclosed in a housing 3 which is connected with a weed cutter 5 through a transmission shaft 7 disposed in a connection pipe 9.
  • the weed cutter 5 comprises a rotary blade 11 and a bearing member 13 which supports the rotary blade 11 and incorporates bevel gears (not shown) to transmit torque from the transmission shaft 7 to the rotary blade 11.
  • the housing 3 is made of synthetic resin and divided into a right housing 15 and a left housing 17 along a boundary plane 19 which includes the axis of rotation of an output shaft (a crank shaft) 21 of the engine 1.
  • the right and left housings 15 and 17 are fitted together with screws 23.
  • a fuel tank 25 (Fig. 4) is provided at an upper part inside the housing 3.
  • the housing 3 is also provided with a hook 27, a front handle 29, and a rear handle 31 comprising a right portion 33 and a left portion 35, all of which will be described later.
  • a shoulder band 37 is hooked
  • the housing 3 Since the housing 3 is separated into the right and left housings 15 and 17 along the plane 19 including the axis of rotation of crank shaft 21, the engine 1, fuel tank 25, etc., are fixed easily between the right and left housings 15 and 17.
  • the number of components which constitute the housing 3 is only two (right and left housings 15 and 17) which is smaller in comparison with a prior art housing so that the engine unit according to the present invention may reduce the manufacturing and assembling process as well as cost.
  • FIG. 4 shows the arrangement of engine 1, in which a vibration isolator joint 39, a clutch drum 41, a magnet wheel 43, a recoil starter 45, a crankcase 47, a carburetor 49, and a choke case 51 are disposed axially in series.
  • the vibration isolator joint 39 is connected with the transmission shaft 7.
  • An engine cylinder 53 is connected to the bottom of crankcase 47.
  • a muffler 55 is connected to the rear of cylinder 53.
  • An ignition plug 57 is attached to the cylinder 53 and actuated by an ignition coil 59 which is located in the vicinity of the circumference of magnet wheel 43 and generates electric power in response to magnets (not shown) embedded in the periphery of magnet wheel 43.
  • the magnet wheel 43 is provided with a plurality of fins 61 for generating airflow.
  • the torque of engine 1 is transmitted to the rotary blade 11 via the transmission shaft 7.
  • the rear handle 31 is hollow, and the hollow portion forms a suction passage 63.
  • An upper end of the passage 63 is open to the engine 1 to receive airflow generated by the fins 61.
  • An lower end of the passage 63 communicates with a suction chamber 65.
  • An air filter 67 is disposed to cross the suction chamber 65. Due to this, airflow generated by the fins 61 enters into the upper end of passage 63 and into the chamber 65, passes through the air filter 67, and is sucked into the carburetor 49. A suction noise generated by the carburetor 49 is reduced during its propagation through the long passage 63 toward the fins 61 side.
  • the periphery of air filter 67 is entirely held by the inner side of housing 3. According to this arrangement, a separate casing for the air filter 67 is not required so that the constitution inside the housing 3 may become simpler, and the size of air filter 67 may be allowed to be larger.
  • the engine 1 is supported by the housing 3 through vibration isolators 69, 71, 73, and 75.
  • the rubber vibration isolator 69 is sealingly disposed between the periphery of choke case 51 and an inner wall of an opening 77 located at the front end of suction chamber 65.
  • the rubber vibration isolators 71 and 73 are received in receiver portions 79 and 81 formed on the inner surface of the casing 3.
  • the vibration isolators 71 and 73 receive projections 83 and 85 formed on the surface of crankcase 47.
  • the rubber vibration isolator 75 is received in a receiver portion 87 formed on the inner surface of the casing 3.
  • the vibration isolator 83 receives in turn a projection 89 formed on the bottom surface of cylinder 53.
  • FIG. 5 shows further detail of the arrangement of engine 1.
  • the crankcase 47 has a bearing portion 91 which supports the crank shaft 21 through bearings 93 and 95.
  • a piston 97 is slidably enclosed in the cylinder 53 and connected through a piston rod 99 to a crank arm 101 which is fixed to the rear end of crank shaft 21.
  • the carburetor 49 is connected to the rear of crankcase 47 through a reed valve 103 (Fig. 6).
  • a centrifugal clutch 105 is disposed inside the clutch drum 41. Clutch shoes of the clutch 105 contact with the inner circumference of clutch drum 41 by centrifugal force applied on the clutch shoes due to the rotation of clutch 105.
  • the clutch drum 41 may be made by synthetic resin, and may have a metallic friction ring fixed to the inner circumference thereof to contact with the clutch shoes of clutch 105.
  • the clutch drum 41, centrifugal clutch 105, and magnet wheel 43 are fixed to the outer end of crank shaft 21 with a female screw cylinder 107.
  • the transmission shaft 7 is supported inside the connection pipe 9 through a bearing 109 and a vibration isolator 111.
  • a support cylinder 113 is held by the casing 3 at an front end thereof. One end of the connection pipe 9 is inserted into the support cylinder 113.
  • the support cylinder 113 is provided with a notch 115 across which a fitting 117 is fixed.
  • the fitting 117 is fastened by a bolt 119 to fix the connection pipe 9.
  • a cap 121 is fitted such that it covers the fitting 117.
  • the support cylinder 113 is provided with a projection 123 which engages with a notch 125 provided at the end of connection pipe 9 to prevent the rotation thereof.
  • the vibration isolator joint 39 which is one of features of the present invention will now be described with reference to Fig. 5.
  • a boss 127 of the clutch drum 41 engages with the female screw cylinder 107 such that the clutch drum 41 is freely rotatable around the screw cylinder 107.
  • An annular member 131 is fixed to the clutch drum 41 of the centrifugal clutch 105.
  • a vibration isolator 131 made of resilient material such as rubber is engaged removably into the annular member 131.
  • a recess 133 formed on the periphery of vibration isolator 131 engages with a projection 135 formed on the inner surface of the annular member 129 to prevent the relative rotation between them.
  • a metallic fitting cylinder 137 is fixed to the center of the vibration isolator 131.
  • the fitting cylinder 137 is provided with a hole 139 having a rectangular cross section to receive a rectangular portion 141 located at one end of the transmission shaft 7.
  • the torque of engine 1 is transmitted to the transmission shaft 7 through the centrifugal clutch 105, the clutch drum 41, and the vibration isolator joint 39 without propagating the vibration of engine to the transmission shaft 7 and connection pipe 9.
  • FIG 5 shows another feature of the present invention, in which an annular baffle 143 is fixed to the casing 3 to cover the front sides of the fins 61.
  • the annular baffle 143 guides effectively airflow generated by the fins 61 toward the engine 1.
  • a guide plate 145 which is fixed to the housing 3 and extends in a space between the engine 1 and the housing 3 to separate the space.
  • the guide plate 145 guides the airflow generated by the fins 61 effectively around the cylinder 53 to cool it.
  • the annular baffle 143 may be fixed directly to the peripheries of the fins 61 instead of housing 3 such that it covers the front sides of the fins 61. According to the above arrangement, a part of airflow which tends to flow forward, hits the baffle 143 and is changed its flow direction to the engine 1 side and guided by the guide plate 145 to flow around the cylinder 53.
  • the recoil starter 45 will now be described with reference to Figs. 5 and 6.
  • the recoil starter 45 is arranged around the bearing portion 91 with a proper gap between them.
  • the recoil starter 45 has on its periphery a fitting portion 147 which engages with the housing 3 as well as having on its inner side face projections 149 which engage with the crankcase 47 to prevent the rotation of recoil starter 45.
  • a reel 151 of the recoil starter 45 is rotated against the spring force of a spiral spring 153 by pulling a starter handle (not shown) fixed to an end of a starter string 155 which is wound around the reel 151.
  • a pivotable nail 157 is arranged on the inner surface of the magnet wheel 43 and pushed by a spring 159 against a ratchet 161 provided on the outer surface of the reel 151.
  • the reel 151 and the spiral spring 153 may solidly be made by synthetic resin.
  • the reel 151 is rotated to engage the ratchet 161 with the nail portion 157 to rotate the magnet wheel 43. Accordingly, the crank shaft 21 which is fixed to the magnet wheel 43 is rotated to start the engine 1. After that, the nail portion 157 is pushed away by the ratchet 161 to release the engagement between them, and this released state is maintained due to the centrifugal force. If the speed of engine 1 is increased to a predetermined value, the centrifugal clutch 105 is engaged with the clutch drum 41 to transmit torque to the transmission shaft 7 via the vibration isolator joint 39. Since a gap is provided between the bearing portion 91 of crankcase 47 and the recoil starter 45, the heat and vibration of crankcase 47 is not transferred to the recoil starter 45.
  • FIG 7 shows that the vibration isolators 69, 71, 73, and 75 shown in Figs. 4 and 6 are located such that the gravity center of the reciprocate portions of engine 1, i.e., the gravity center of the piston 97 and piston rod 99, moves always within a space defined by the positions of the vibration isolators 69, 71, 73, and 75. Due to this arrangement, vibration is effectively prevented.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Harvester Elements (AREA)

Claims (5)

  1. Tragbares Motoraggregat mit
    einem Motor (1), der eine Kupplung (41) enthält, einem Kurbelgehäuse (47), das eine mit einer Abtriebswelle (7) zu verbindende Kurbelwelle (21) umschließt, einem Motorzylinder (53) mit einem Kolben (97) und einer Kolbenstange (21), einem Vergaser (40), einem Luftfilter (67), einem Aufrollstarter (45), einem Schalldämpfer (55), einem Gehäuse (3) zum Einschließen des Motors (1), und Mittel (69, 71, 73, 75) zur Isolierung des Gehäuses (3) von durch den Motor (1) verursachten Schwingungen, wobei der Motor (1) durch die Schwingungsisolationsmittel (69, 71, 73, 75) befestigt ist und die Schwingungsisolationsmittel mindestens vier Elemente (69, 71, 73, 75) enthalten,
    dadurch gekennzeichnet,
    daß das Gehäuse (3) entlang einer die Achse der Abtriebswelle (7) enthaltenden Vertikalebene (19) in zwei Teile (15, 17) teilbar ist und die wenigstens vier Elemente so plaziert sind, daß die Lage der mindestens vier Elemente (69, 71, 73, 75) einen polyedrischen Raumbereich definieren, und daß eine Hin- und Herbewegung im Motor innerhalb des polyedrischen Raumbereiches ausgeführt wird.
  2. Tragbares Motoraggregat nach Anspruch 1, bei dem der polyedrische Raumbereich zumindest einen tetragonalen Bereich enthält.
  3. Tragbares Motoraggregat nach Anspruch 1 oder, bei dem zwei (71, 73) der wenigstens vier Elemente der Schwingungsisolationsmittel an seitlich gegenüberliegenden Seiten des Motors (1) vorgesehen sind, wobei eines (75) an der Unterseite des Motors vorgesehen ist und ein anderes (69) an der Rückseite des Motors vorgesehen ist.
  4. Tragbares Motoraggregat nach Anspruch 1, bei dem die Kupplung (41) eine Kupplungstrommel und ein Kupplungsschuhelement, das mit der Kurbelwelle (21) verbunden ist, aufweist, und das Motoraggregat weiterhin ein Schwingungsisolationsgelenk (39) aufweist, das ein ringförmiges Element aufweist, das an einer Seitenfläche der Kupplungstrommel gegenüber der Kurbelwelle (21) befestigt ist, wobei das Schwingungsisolationsmittel herausnehmbar aufgenommen ist in dem ringförmigen Element und ein an der Mitte des Schwingungsisolators befestigtes Befestigungselement auf der Abtriebswelle (7), die in dem Befestigungselement aufgenommen und daran befestigt ist.
  5. Tragbares Motoraggregat nach Anspruch 4, bei dem die Kupplungstrommel an einer dem Kurbelgehäuse (47) gegenüberliegenden Seitenfläche mit einer Vielzahl von Vorsprüngen versehen ist, der Schwingungsisolator eine Vielzahl von Öffnungen aufweist, die in herausnehmbarer Weise mit den an der Kupplungstrommel ausgebildeten Vorsprüngen in Eingriff sind, und daß in diesem Fall das ringförmige Element nicht vorgesehen ist.
EP90125124A 1985-03-29 1986-04-01 Tragbares Motoraggregat Expired - Lifetime EP0428186B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP90125124A EP0428186B1 (de) 1985-03-29 1986-04-01 Tragbares Motoraggregat

Applications Claiming Priority (17)

Application Number Priority Date Filing Date Title
JP63814/85 1985-03-29
JP60063815A JPS61224910A (ja) 1985-03-29 1985-03-29 携帯用作業機
JP44951/85 1985-03-29
JP60063814A JPS61226526A (ja) 1985-03-29 1985-03-29 携帯用エンジン
JP4495185U JPS61162558U (de) 1985-03-29 1985-03-29
JP63815/85 1985-03-29
JP5741385U JPS61173741U (de) 1985-04-19 1985-04-19
JP1985057412U JPH048252Y2 (de) 1985-04-19 1985-04-19
JP57412/85 1985-04-19
JP57413/85 1985-04-19
JP61849/85 1985-04-26
JP61845/85 1985-04-26
JP1985061849U JPH064037Y2 (ja) 1985-04-26 1985-04-26 エンジンの動力伝動装置
JP61846/85 1985-04-26
JP1985061846U JPH048253Y2 (de) 1985-04-26 1985-04-26
JP1985061845U JPH0332737Y2 (de) 1985-04-26 1985-04-26
EP90125124A EP0428186B1 (de) 1985-03-29 1986-04-01 Tragbares Motoraggregat

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
EP86104408.9 Division 1986-04-01

Publications (2)

Publication Number Publication Date
EP0428186A1 EP0428186A1 (de) 1991-05-22
EP0428186B1 true EP0428186B1 (de) 1995-01-18

Family

ID=27576086

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90125124A Expired - Lifetime EP0428186B1 (de) 1985-03-29 1986-04-01 Tragbares Motoraggregat

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EP (1) EP0428186B1 (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19654290A1 (de) 1996-12-27 1998-07-02 Dolmar Gmbh Antriebsvorrichtung für einen Rasentrimmer
DE19737657B4 (de) * 1997-08-29 2006-04-20 Dolmar Gmbh Tragbares Handarbeitsgerät und Rahmen für Handarbeitsgerät
US6810849B1 (en) 1999-01-25 2004-11-02 Briggs & Stratton Corporation Four-stroke internal combustion engine

Citations (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3772784A (en) * 1969-10-16 1973-11-20 Stihl Maschf Andreas Holding arrangement for motor saws
JPS5037294U (de) * 1973-08-02 1975-04-18
JPS5118326A (de) * 1974-06-28 1976-02-13 American Standard Inc
SE391472B (sv) * 1973-10-31 1977-02-21 Partner Ab Anordning vid vibrationsdempade, motordrivna handredskap
US4135301A (en) * 1976-05-28 1979-01-23 Firma Andreas Stihl Motorized chain saw
US4286675A (en) * 1979-06-25 1981-09-01 Beaird-Poulan Division Of Emerson Electric Co. Narrow profile power handle for line trimmer and the like
US4296553A (en) * 1979-03-23 1981-10-27 Adreas Stihl Portable power chain saw
JPS5751130A (en) * 1980-08-02 1982-03-25 British Chrome Chemicals Ltd Manufacture of chromium trioxide
US4332220A (en) * 1979-03-23 1982-06-01 Andreas Stihl Power tool, especially power saw
US4350123A (en) * 1980-02-09 1982-09-21 Solo Kleinmotoren Gmbh Hand-held power tool with a combustion motor
JPS58173756A (ja) * 1982-04-06 1983-10-12 Canon Inc 静電荷像現像用トナー
US4422523A (en) * 1981-12-09 1983-12-27 Kioritz Corporation Exhaust muffler cover
US4446822A (en) * 1981-05-25 1984-05-08 Kioritz Corporation Heat insulating mounting device for carburetor
JPS59106794A (ja) * 1982-12-11 1984-06-20 三菱重工業株式会社 防振構造のエンジン
US4494490A (en) * 1982-03-31 1985-01-22 Komatsu Zenoah Co. Cylinder cover

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4391041A (en) * 1981-04-20 1983-07-05 The Toro Company Powered ground care implement

Patent Citations (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3772784A (en) * 1969-10-16 1973-11-20 Stihl Maschf Andreas Holding arrangement for motor saws
JPS5037294U (de) * 1973-08-02 1975-04-18
SE391472B (sv) * 1973-10-31 1977-02-21 Partner Ab Anordning vid vibrationsdempade, motordrivna handredskap
JPS5118326A (de) * 1974-06-28 1976-02-13 American Standard Inc
US4135301A (en) * 1976-05-28 1979-01-23 Firma Andreas Stihl Motorized chain saw
US4296553A (en) * 1979-03-23 1981-10-27 Adreas Stihl Portable power chain saw
US4332220A (en) * 1979-03-23 1982-06-01 Andreas Stihl Power tool, especially power saw
US4286675A (en) * 1979-06-25 1981-09-01 Beaird-Poulan Division Of Emerson Electric Co. Narrow profile power handle for line trimmer and the like
US4350123A (en) * 1980-02-09 1982-09-21 Solo Kleinmotoren Gmbh Hand-held power tool with a combustion motor
JPS5751130A (en) * 1980-08-02 1982-03-25 British Chrome Chemicals Ltd Manufacture of chromium trioxide
US4446822A (en) * 1981-05-25 1984-05-08 Kioritz Corporation Heat insulating mounting device for carburetor
US4422523A (en) * 1981-12-09 1983-12-27 Kioritz Corporation Exhaust muffler cover
US4494490A (en) * 1982-03-31 1985-01-22 Komatsu Zenoah Co. Cylinder cover
JPS58173756A (ja) * 1982-04-06 1983-10-12 Canon Inc 静電荷像現像用トナー
JPS59106794A (ja) * 1982-12-11 1984-06-20 三菱重工業株式会社 防振構造のエンジン

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Publication number Publication date
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