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WO1996005719A3 - Improved battery-powered lawn cutting system - Google Patents

Improved battery-powered lawn cutting system Download PDF

Info

Publication number
WO1996005719A3
WO1996005719A3 PCT/US1995/002765 US9502765W WO9605719A3 WO 1996005719 A3 WO1996005719 A3 WO 1996005719A3 US 9502765 W US9502765 W US 9502765W WO 9605719 A3 WO9605719 A3 WO 9605719A3
Authority
WO
WIPO (PCT)
Prior art keywords
battery
lawnmower
chassis
cutting blade
improved battery
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.)
Ceased
Application number
PCT/US1995/002765
Other languages
French (fr)
Other versions
WO1996005719A2 (en
Inventor
Patrick J Bruener
Paul A Tharman
John A Ii Fiorenza
Joseph L Pfaff
Richard A Dykstra
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.)
Briggs and Stratton Corp
Original Assignee
Briggs and Stratton Corp
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 PCT/US1994/009431 external-priority patent/WO1995008256A1/en
Application filed by Briggs and Stratton Corp filed Critical Briggs and Stratton Corp
Priority to EP95913566A priority Critical patent/EP0777410A2/en
Priority to CA002195995A priority patent/CA2195995C/en
Priority to BR9508744A priority patent/BR9508744A/en
Priority to AU20953/95A priority patent/AU684928B2/en
Priority to JP8508036A priority patent/JP2837960B2/en
Publication of WO1996005719A2 publication Critical patent/WO1996005719A2/en
Publication of WO1996005719A3 publication Critical patent/WO1996005719A3/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01D—HARVESTING; MOWING
    • A01D34/00—Mowers; Mowing apparatus of harvesters
    • A01D34/01—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus
    • A01D34/412—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus having rotating cutters
    • A01D34/63—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus having rotating cutters having cutters rotating about a vertical axis
    • A01D34/67—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus having rotating cutters having cutters rotating about a vertical axis hand-guided by a walking operator
    • A01D34/68—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus having rotating cutters having cutters rotating about a vertical axis hand-guided by a walking operator with motor driven cutters or wheels
    • A01D34/6806—Driving mechanisms
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01D—HARVESTING; MOWING
    • A01D34/00—Mowers; Mowing apparatus of harvesters
    • A01D34/01—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus
    • A01D34/412—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus having rotating cutters
    • A01D34/63—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus having rotating cutters having cutters rotating about a vertical axis
    • A01D34/74—Cutting-height adjustment
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01D—HARVESTING; MOWING
    • A01D34/00—Mowers; Mowing apparatus of harvesters
    • A01D34/01—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus
    • A01D34/412—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus having rotating cutters
    • A01D34/63—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus having rotating cutters having cutters rotating about a vertical axis
    • A01D34/76—Driving mechanisms for the cutters
    • A01D34/78—Driving mechanisms for the cutters electric
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01D—HARVESTING; MOWING
    • A01D34/00—Mowers; Mowing apparatus of harvesters
    • A01D34/01—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus
    • A01D34/412—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus having rotating cutters
    • A01D34/63—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus having rotating cutters having cutters rotating about a vertical axis
    • A01D34/81—Casings; Housings
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01D—HARVESTING; MOWING
    • A01D34/00—Mowers; Mowing apparatus of harvesters
    • A01D34/01—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus
    • A01D34/412—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus having rotating cutters
    • A01D34/63—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus having rotating cutters having cutters rotating about a vertical axis
    • A01D34/82—Other details
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01D—HARVESTING; MOWING
    • A01D34/00—Mowers; Mowing apparatus of harvesters
    • A01D34/01—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus
    • A01D34/412—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus having rotating cutters
    • A01D34/63—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus having rotating cutters having cutters rotating about a vertical axis
    • A01D34/82—Other details
    • A01D34/828—Safety devices
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01D—HARVESTING; MOWING
    • A01D34/00—Mowers; Mowing apparatus of harvesters
    • A01D34/01—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus
    • A01D34/412—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus having rotating cutters
    • A01D34/63—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus having rotating cutters having cutters rotating about a vertical axis
    • A01D34/67—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus having rotating cutters having cutters rotating about a vertical axis hand-guided by a walking operator
    • A01D34/68—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus having rotating cutters having cutters rotating about a vertical axis hand-guided by a walking operator with motor driven cutters or wheels
    • A01D2034/6843—Control levers on the handle of the mower
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01D—HARVESTING; MOWING
    • A01D2101/00—Lawn-mowers

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Environmental Sciences (AREA)
  • Harvester Elements (AREA)
  • Hybrid Cells (AREA)
  • Battery Electrode And Active Subsutance (AREA)
  • Glass Compositions (AREA)

Abstract

The improved battery-powered lawnmower includes a safety key (48) that is automatically removed when the removable battery (22) is removed, while at the same time blocking the battery recharger receptacle. The lawnmower also includes a control circuit that shuts off the lawnmower upon the occurrence of one or more of several predetermined conditions, including low battery voltage, the encountering of heavy grass for a period of 3 seconds or more, and high motor current that may occur when the cutting blade is jammed. The cutting blade (264) is designed to move through any debris accumulated between the blade ends and the housing sidewall (284) without sacrificing the lift for needed cutting and mulching. The invention also includes a unique height adjustment assembly for adjusting the height of the chassis, a handle attachment that allows the handle to be positively tightened to the lawnmower chassis, and a telescoping groove (76) for the battery's quick connect/disconnect terminals.
PCT/US1995/002765 1994-08-22 1995-03-02 Improved battery-powered lawn cutting system Ceased WO1996005719A2 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP95913566A EP0777410A2 (en) 1994-08-22 1995-03-02 Improved battery-powered lawn cutting system
CA002195995A CA2195995C (en) 1994-08-22 1995-03-02 Improved battery-powered lawn cutting system
BR9508744A BR9508744A (en) 1994-08-22 1995-03-02 Improved battery-powered lawn mowing system
AU20953/95A AU684928B2 (en) 1994-08-22 1995-03-02 Improved battery-powered lawn cutting system
JP8508036A JP2837960B2 (en) 1994-08-22 1995-03-02 Improved battery powered mower

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
PCT/US1994/009431 WO1995008256A1 (en) 1993-09-22 1994-08-22 Battery-powered vegetation cutting system and method of using same
ATPCT/US94/09431 1994-08-22
US38858895A 1995-02-14 1995-02-14
US08/388,588 1995-02-14

Publications (2)

Publication Number Publication Date
WO1996005719A2 WO1996005719A2 (en) 1996-02-29
WO1996005719A3 true WO1996005719A3 (en) 1996-05-09

Family

ID=26788376

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1995/002765 Ceased WO1996005719A2 (en) 1994-08-22 1995-03-02 Improved battery-powered lawn cutting system

Country Status (5)

Country Link
EP (1) EP0777410A2 (en)
JP (1) JP2837960B2 (en)
AU (5) AU684928B2 (en)
CA (1) CA2195995C (en)
WO (1) WO1996005719A2 (en)

Families Citing this family (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5819513A (en) * 1993-09-22 1998-10-13 Briggs & Stratton Corporation Power head assembly for electric grass cutting device
DE19528166C1 (en) * 1995-08-01 1996-08-01 Wolf Geraete Gmbh Vertrieb Battery driven lawn mower
DE19528167C1 (en) * 1995-08-01 1996-08-29 Wolf Geraete Gmbh Vertrieb Lawn mower with battery charged electric motor
US5749209A (en) * 1996-09-05 1998-05-12 Mtd Products Inc Single lever height adjustment mechanism and method for a lawn mower
GB9717093D0 (en) * 1997-08-12 1997-10-15 Bosch Gmbh Robert Improvements in or relating to vegetation cutters
FR2768298B1 (en) * 1997-09-12 1999-11-12 Wolf Outils LAWNMOWER WITH ELECTRIC MOTOR
GB0021426D0 (en) * 2000-08-31 2000-10-18 Bosch Robert G Lawncare Machines
US7007446B2 (en) 2000-10-26 2006-03-07 Textron Inc. Battery-powered walk-behind greensmower
JP3776773B2 (en) 2001-08-22 2006-05-17 本田技研工業株式会社 Electric lawn mower
JP2003061435A (en) * 2001-08-22 2003-03-04 Honda Motor Co Ltd Electric working machine
US7677017B2 (en) * 2005-06-28 2010-03-16 Textron Innovations Inc. Modular power source for walk-behind mower
US7392869B2 (en) * 2005-11-01 2008-07-01 Textron Inc. Modular power source for riding mower
GB0615241D0 (en) 2006-08-01 2006-09-06 Bosch Gmbh Robert Lawn-care apparatus
TWI427846B (en) * 2008-08-29 2014-02-21 Fih Hong Kong Ltd Battery cover structure
TWI427847B (en) * 2008-09-19 2014-02-21 Fih Hong Kong Ltd Battery cover lock structure
US7762049B2 (en) 2008-12-31 2010-07-27 Black & Decker Inc. Electric mower having two-motion activation system
JP5750825B2 (en) * 2009-08-28 2015-07-22 日立工機株式会社 Electric working machine
JP5829006B2 (en) * 2010-01-14 2015-12-09 日立工機株式会社 Electric working machine
JP5758599B2 (en) * 2010-08-25 2015-08-05 株式会社マキタ Push lawn mower
CN102687626B (en) * 2011-03-22 2016-02-17 苏州宝时得电动工具有限公司 Mower
JP5912305B2 (en) * 2011-06-14 2016-04-27 株式会社マキタ Electric lawn mower
JP5789141B2 (en) * 2011-07-05 2015-10-07 ヤンマー株式会社 Electric work vehicle
CN105432238B (en) * 2014-08-21 2017-06-30 南京德朔实业有限公司 mower and safety device thereof
EP3014975B1 (en) * 2014-10-31 2018-05-23 Robert Bosch Gmbh Garden device and method for its operation
US20220338412A1 (en) * 2019-05-10 2022-10-27 Kaaz Corporation Electric work machine with cutting blade
CN112128035B (en) * 2020-10-16 2025-01-21 格力博(江苏)股份有限公司 Safety key kit and garden tools
US11937544B2 (en) 2021-03-02 2024-03-26 Honda Motor Co., Ltd. Electric mower switch system
CN113557842A (en) * 2021-07-09 2021-10-29 张宝斌 Replaceable blade structure for lawn machine
EP4401545A1 (en) * 2021-10-14 2024-07-24 Briggs & Stratton, LLC Zero turn radius mower with removable battery packs
EP4562993A4 (en) * 2022-07-27 2025-10-29 Greenworks Jiangsu Co Ltd DEACTIVATION DEVICE AND LAWN MOWER

Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3357715A (en) * 1966-02-10 1967-12-12 M T & D Company Mower having wheel adjustable means
US3581480A (en) * 1969-09-30 1971-06-01 Black & Decker Mfg Co Multiple-function receptacle and interconnecting plugs therefor
DE2210557A1 (en) * 1972-03-04 1973-09-06 Gutbrod Werke Gmbh MOVABLE BASE PLATE AS A CHASSIS FOR THE COMMON ENERGY DISPENSER OF SEVERAL GAERTNICAL OR AGRICULTURAL WORK TOOLS
GB1349813A (en) * 1971-07-06 1974-04-10 Mason & Porter Ltd Rotary mowing machines
DE2604609A1 (en) * 1976-02-06 1977-08-11 Roth Kg Fritz LAWN MOWER WITH CUTTING HEIGHT ADJUSTMENT
AU513253B2 (en) * 1976-08-31 1980-11-20 Morton, Jeffrey Kenneth Improvements in and relating to mowers
US4835952A (en) * 1985-07-23 1989-06-06 Mclane Frank E Lawn mower height adjustment linkages
EP0466306A1 (en) * 1990-06-01 1992-01-15 Black & Decker Inc. Lawn mower
JPH04201752A (en) * 1990-11-30 1992-07-22 Kawasaki Heavy Ind Ltd Method for preventing overdischarge of electric motor-driven work machine
US5203147A (en) * 1992-01-22 1993-04-20 Ryobi Motor Products Corp. Lawn mower activation switch
DE9313032U1 (en) * 1993-08-31 1993-12-02 AL-KO Geräte GmbH, 89359 Kötz Mobile working device
WO1994001993A1 (en) * 1992-07-24 1994-02-03 Ryobi Motor Products Corp. Recharging system for a battery operated tool
EP0585021A2 (en) * 1992-08-18 1994-03-02 Black & Decker Inc. Improvements in battery operated electric machines

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3973378A (en) * 1975-03-18 1976-08-10 Disston, Inc. Cordless grass trimmer having removable battery pack
US4359615A (en) * 1981-08-14 1982-11-16 Black & Decker Inc. Switch and means to prevent unauthorized operation thereof
DE4026012A1 (en) * 1990-08-17 1992-02-20 Gardena Kress & Kastner Gmbh Travel control for gardening appliance esp. lawn mower - automatically stops immediately on receipt of release signal from safety catch requiring foot or hand force
DE4137162A1 (en) * 1991-11-12 1993-05-13 Wolf Dietrich Zinck Battery-operated electric lawnmower using permanent D.C. motor - with battery simply electrically disconnected and removed for replacement without requiring any special tools
AU4471393A (en) * 1992-08-18 1994-02-24 Black & Decker Incorporated Improvements in battery operated electric machines

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3357715A (en) * 1966-02-10 1967-12-12 M T & D Company Mower having wheel adjustable means
US3581480A (en) * 1969-09-30 1971-06-01 Black & Decker Mfg Co Multiple-function receptacle and interconnecting plugs therefor
GB1349813A (en) * 1971-07-06 1974-04-10 Mason & Porter Ltd Rotary mowing machines
DE2210557A1 (en) * 1972-03-04 1973-09-06 Gutbrod Werke Gmbh MOVABLE BASE PLATE AS A CHASSIS FOR THE COMMON ENERGY DISPENSER OF SEVERAL GAERTNICAL OR AGRICULTURAL WORK TOOLS
DE2604609A1 (en) * 1976-02-06 1977-08-11 Roth Kg Fritz LAWN MOWER WITH CUTTING HEIGHT ADJUSTMENT
AU513253B2 (en) * 1976-08-31 1980-11-20 Morton, Jeffrey Kenneth Improvements in and relating to mowers
US4835952A (en) * 1985-07-23 1989-06-06 Mclane Frank E Lawn mower height adjustment linkages
EP0466306A1 (en) * 1990-06-01 1992-01-15 Black & Decker Inc. Lawn mower
JPH04201752A (en) * 1990-11-30 1992-07-22 Kawasaki Heavy Ind Ltd Method for preventing overdischarge of electric motor-driven work machine
US5203147A (en) * 1992-01-22 1993-04-20 Ryobi Motor Products Corp. Lawn mower activation switch
WO1994001993A1 (en) * 1992-07-24 1994-02-03 Ryobi Motor Products Corp. Recharging system for a battery operated tool
EP0585021A2 (en) * 1992-08-18 1994-03-02 Black & Decker Inc. Improvements in battery operated electric machines
DE9313032U1 (en) * 1993-08-31 1993-12-02 AL-KO Geräte GmbH, 89359 Kötz Mobile working device

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 16, no. 538 (M - 1335) 9 November 1992 (1992-11-09) *

Also Published As

Publication number Publication date
AU2095395A (en) 1996-03-14
CA2195995A1 (en) 1996-02-29
AU5642498A (en) 1998-06-04
AU684928B2 (en) 1998-01-08
AU695414B2 (en) 1998-08-13
JPH10502540A (en) 1998-03-10
AU5642298A (en) 1998-06-04
CA2195995C (en) 2001-02-06
WO1996005719A2 (en) 1996-02-29
JP2837960B2 (en) 1998-12-16
EP0777410A2 (en) 1997-06-11
AU5642598A (en) 1998-06-04
AU701777B2 (en) 1999-02-04
AU5642398A (en) 1998-06-04

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