EP0320576A3 - Improved portable rotary power tool - Google Patents

Improved portable rotary power tool Download PDF

Info

Publication number
EP0320576A3
EP0320576A3 EP88115042A EP88115042A EP0320576A3 EP 0320576 A3 EP0320576 A3 EP 0320576A3 EP 88115042 A EP88115042 A EP 88115042A EP 88115042 A EP88115042 A EP 88115042A EP 0320576 A3 EP0320576 A3 EP 0320576A3
Authority
EP
European Patent Office
Prior art keywords
engine
starter
module
housing
power head
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.)
Granted
Application number
EP88115042A
Other versions
EP0320576A2 (en
EP0320576B1 (en
Inventor
Lloyd H. Tuggle
Jefferey G. Sadler
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.)
White Consolidated Industries Inc
Original Assignee
White Consolidated Industries Inc
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 White Consolidated Industries Inc filed Critical White Consolidated Industries Inc
Priority to AT88115042T priority Critical patent/ATE83043T1/en
Publication of EP0320576A2 publication Critical patent/EP0320576A2/en
Publication of EP0320576A3 publication Critical patent/EP0320576A3/en
Application granted granted Critical
Publication of EP0320576B1 publication Critical patent/EP0320576B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25C—HAND-HELD NAILING OR STAPLING TOOLS; MANUALLY OPERATED PORTABLE STAPLING TOOLS
    • B25C1/00—Hand-held nailing tools; Nail feeding devices
    • B25C1/06—Hand-held nailing tools; Nail feeding devices operated by electric power
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01B—MACHINES OR ENGINES, IN GENERAL OR OF POSITIVE-DISPLACEMENT TYPE, e.g. STEAM ENGINES
    • F01B1/00—Reciprocating-piston machines or engines characterised by number or relative disposition of cylinders or by being built-up from separate cylinder-crankcase elements
    • F01B1/12—Separate cylinder-crankcase elements coupled together to form a unit
    • 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
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B1/00—Engines characterised by fuel-air mixture compression
    • F02B1/02—Engines characterised by fuel-air mixture compression with positive ignition
    • F02B1/04—Engines characterised by fuel-air mixture compression with positive ignition with fuel-air mixture admission into cylinder
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Harvester Elements (AREA)
  • Surgical Instruments (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Lock And Its Accessories (AREA)
  • Power Steering Mechanism (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Percussive Tools And Related Accessories (AREA)
  • Auxiliary Drives, Propulsion Controls, And Safety Devices (AREA)

Abstract

A gasoline engine driven flexible line trimmer is provided with a modularly constructed power head section which significantly facilitates the original manufacturing assembly, and subsequent service disassembly, of the power head. In a clutch drive embodiment thereof, the power head has four readily separable modules - an engine module comprising a main engine shroud to which the engine is internally secured; a fan housing module; a starter module comprising a starter housing and a recoil starter mechanism retained therein; and a coupling module comprising a clutch housing carrying therein structure for operatively interconnecting the engine's clutch to the flexible drive shaft disposed within the trimmer shaft. In a direct drive version thereof, the power head has two separable modules - the engine module and a combined fan housing, starter and coupling module defined by a single housing within which the starter and coupling structure is carried. The main shroud is provided with a specially designed wall section which supports the engine, defines a closure wall of its crankcase, forms an air-fuel mixture passage for a carburetor externally supported on the wall section and supports a reed valve within the crankcase. The shroud defines an external protective recess in which the carburetor is positioned and, in one embodiment, defines a portion of the engine's fuel tank. Pull rope installation in the starter mechanism is facilitated and made safer by pulley locking and retaining structure incorporated in the starter module, and improved air filter element sealing is provided by virtue of a specially designed air filter housing and choke plate assembly associated with the carburetor. Shaft vibration transmitted to the trimmer user through the supporting shoulder strap structure is significantly reduced by a specially designed resilient strap connector assembly securable to the trimmer shaft.
EP88115042A 1987-12-17 1988-09-14 Portable rotary power tool Expired - Lifetime EP0320576B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88115042T ATE83043T1 (en) 1987-12-17 1988-09-14 PORTABLE, ROTATING DEVICE.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US13424587A 1987-12-17 1987-12-17
US134245 1987-12-17

Publications (3)

Publication Number Publication Date
EP0320576A2 EP0320576A2 (en) 1989-06-21
EP0320576A3 true EP0320576A3 (en) 1989-11-23
EP0320576B1 EP0320576B1 (en) 1992-12-02

Family

ID=22462441

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88115042A Expired - Lifetime EP0320576B1 (en) 1987-12-17 1988-09-14 Portable rotary power tool

Country Status (11)

Country Link
EP (1) EP0320576B1 (en)
JP (1) JP2714409B2 (en)
KR (1) KR960005983B1 (en)
AT (1) ATE83043T1 (en)
AU (1) AU612709B2 (en)
CA (1) CA1333160C (en)
DE (1) DE3876395T2 (en)
ES (1) ES2037167T3 (en)
MX (1) MX172007B (en)
NZ (1) NZ226954A (en)
ZA (1) ZA886972B (en)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4215672C2 (en) * 1991-05-14 1996-11-07 Fuji Robin Kk Two-cylinder in-line two-stroke engine
US5329896A (en) * 1993-01-06 1994-07-19 Ryobi Outdoor Products, Inc. Replaceable recoil starter
DE4321862C2 (en) * 1993-07-01 1995-06-29 Stihl Maschf Andreas Cable starter for a drive device, in particular for a brush cutter
DE19618669A1 (en) * 1996-05-09 1997-11-13 Stihl Maschf Andreas Hand held tool e.g. cutters, chain saw, disk grinder etc.
US6257179B1 (en) 1999-04-28 2001-07-10 Mitsubishi Heavy Industries, Ltd. Two-stroke cycle engine
JP4052838B2 (en) 2002-01-18 2008-02-27 本田技研工業株式会社 Engine working machine
US6959680B2 (en) * 2002-07-24 2005-11-01 Starting Industrial Co., Ltd. Recoil starter
US7007659B2 (en) * 2004-02-06 2006-03-07 Kohler Co. Mechanism for removably coupling a shaft of a utilitarian device to an internal combustion engine
JP5216648B2 (en) * 2009-03-25 2013-06-19 カーツ株式会社 Connection separation structure for engine and machine
CN108990550B (en) * 2018-08-13 2023-08-25 铜陵汇宇实业有限公司 Tensioning wheel bracket for agricultural harvester transmission mechanism
BR112020002582B1 (en) * 2019-03-05 2022-03-03 Honda Motor Co., Ltd Inlet member opening/closing mechanism
CN113950241B (en) * 2019-12-19 2024-06-18 创科无线普通合伙 Electric cultivator
CN114986055B (en) * 2022-04-25 2023-12-08 杭州叉车钣焊有限公司 Welding positioning device of forklift oil tank assembly

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2054035A (en) * 1979-06-25 1981-02-11 Beaird Poulan Div Portable drive units for power tools
FR2475625A1 (en) * 1980-02-09 1981-08-14 Solo Kleinmotoren Gmbh COMBINED APPARATUS COMPRISING A WORKING DEVICE AND A COMBUSTION ENGINE
US4391041A (en) * 1981-04-20 1983-07-05 The Toro Company Powered ground care implement
EP0197487A2 (en) * 1985-03-29 1986-10-15 Komatsu Zenoah Co. Portable engine unit

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS544721A (en) * 1977-06-07 1979-01-13 Yamada Kikai Kogyo Kk Potable type power bush cleaner
JPS5991430U (en) * 1983-09-05 1984-06-21 小松ゼノア株式会社 brush cutter engine
JPS60182730U (en) * 1984-05-15 1985-12-04 小松ゼノア株式会社 Fan shaft sealing device for brush cutters

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2054035A (en) * 1979-06-25 1981-02-11 Beaird Poulan Div Portable drive units for power tools
FR2475625A1 (en) * 1980-02-09 1981-08-14 Solo Kleinmotoren Gmbh COMBINED APPARATUS COMPRISING A WORKING DEVICE AND A COMBUSTION ENGINE
US4391041A (en) * 1981-04-20 1983-07-05 The Toro Company Powered ground care implement
EP0197487A2 (en) * 1985-03-29 1986-10-15 Komatsu Zenoah Co. Portable engine unit

Also Published As

Publication number Publication date
ZA886972B (en) 1990-05-30
KR890009544A (en) 1989-08-02
EP0320576A2 (en) 1989-06-21
ES2037167T3 (en) 1993-06-16
AU612709B2 (en) 1991-07-18
AU2395688A (en) 1989-06-22
ATE83043T1 (en) 1992-12-15
CA1333160C (en) 1994-11-22
NZ226954A (en) 1991-01-29
MX172007B (en) 1993-11-29
KR960005983B1 (en) 1996-05-06
DE3876395D1 (en) 1993-01-14
EP0320576B1 (en) 1992-12-02
JPH01171407A (en) 1989-07-06
DE3876395T2 (en) 1993-05-27
JP2714409B2 (en) 1998-02-16

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