USH380H - Trimmer - Google Patents

Trimmer Download PDF

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Publication number
USH380H
USH380H US06/913,594 US91359486A USH380H US H380 H USH380 H US H380H US 91359486 A US91359486 A US 91359486A US H380 H USH380 H US H380H
Authority
US
United States
Prior art keywords
trimmer
hollow
operation rod
flexible shaft
peripheral surface
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.)
Abandoned
Application number
US06/913,594
Other languages
English (en)
Inventor
Yoetsu Yokocho
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.)
Kioritz Corp
Original Assignee
Kyoritsu Noki Co Ltd
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 Kyoritsu Noki Co Ltd filed Critical Kyoritsu Noki Co Ltd
Application granted granted Critical
Publication of USH380H publication Critical patent/USH380H/en
Abandoned legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01D—HARVESTING; MOWING
    • A01D34/00—Mowers; Mowing apparatus of harvesters
    • A01D34/835—Mowers; Mowing apparatus of harvesters specially adapted for particular purposes
    • A01D34/90—Mowers; Mowing apparatus of harvesters specially adapted for particular purposes for carrying by the operator

Definitions

  • This invention relates to a trimmer for cutting bash or grass.
  • a trimmer of a straight rod type equipped with a gear chamber for driving a cutter blade when a cutting operation is performed it has hitherto been usual practice to use a hollow operation rod formed of an aluminum alloy of high strength, and a rigid shaft formed of carbon steel to serve as a transmission shaft which extends through the interior of the hollow operation rod and is journalled by four or five bearings.
  • This type of trimmer has suffered the following disadvantages. To minimize vibration that might occur during operations, the parts should be assembled with a high degree of precision. During operations, the operator should be careful not to bend the operation rod. Moreover, the trimmer itself is rather heavy in weight and high in cost.
  • This invention has as its object the provision of a trimmer of the type described which obviates the aforesaid disadvantages of the trimmer of the prior art.
  • the aforesaid object is accomplished according to the invention by using a flexible shaft as a transmission shaft in place of the rigid shaft that has hitherto been used.
  • FIG. 1 is a sectional view of the essential portions of one embodiment of the trimmer in conformity with the invention.
  • FIG. 2 is a side view of the trimmer shown in FIG. 1, showing the construction of the trimmer as a whole.
  • a hollow straight operation rod 1 formed of an aluminum alloy or a synthetic resinous material to have strength which is an essential minimum and does not interfere with cutting operations performed by the trimmer supports at its upper end a prime mover 2 which may be a two-cycle gasoline engine and at its lower end a gear chamber 4 for driving a cutter blade 3 when the cutting operations are performed.
  • a prime mover 2 which may be a two-cycle gasoline engine and at its lower end a gear chamber 4 for driving a cutter blade 3 when the cutting operations are performed.
  • a flexible shaft 5 extending through the interior of the hollow operation rod 1 is coupled at one end to a boss 8 of a driving gear (not shown) in the gear chamber 4 in a manner to be prevented from relative angular movement and at an opposite end to a boss 9 of a clutch drum 11 for the prime mover 2 in a manner to be prevented from relative angular movement, and a liner 6 formed as of a synthetic resinous material is fitted over an outer peripheral surface of the flexible shaft 5.
  • Grease 7 is filled between the outer peripheral surface of the flexible shaft 5 and an inner peripheral surface of the liner 6 to absorb heat which might be generated during the operations.
  • a clearance of about 1 mm is defined between an outer peripheral surface of the liner 6 and an inner wall surface of the hollow operation rod 1.
  • the trimmer according to the invention is relatively light in weight and easy to handle and capable of minimizing vibration which might occur during the cutting operations.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Environmental Sciences (AREA)
  • Harvester Elements (AREA)
US06/913,594 1984-05-25 1986-09-30 Trimmer Abandoned USH380H (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP59-75930[U] 1984-05-25
JP1984075930U JPS60190220U (ja) 1984-05-25 1984-05-25 直杆形刈払機

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
US06733482 Continuation 1985-05-13

Publications (1)

Publication Number Publication Date
USH380H true USH380H (en) 1987-12-01

Family

ID=13590472

Family Applications (1)

Application Number Title Priority Date Filing Date
US06/913,594 Abandoned USH380H (en) 1984-05-25 1986-09-30 Trimmer

Country Status (2)

Country Link
US (1) USH380H (en, 2012)
JP (1) JPS60190220U (en, 2012)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4944711A (en) 1988-03-23 1990-07-31 Kioritz Corporation Extendable/retractable operational sleeve
US5020281A (en) * 1989-04-03 1991-06-04 American Pneumatic Technologies, Inc. High speed rotary hand tool with adjustable head coupling
US7004668B2 (en) 2002-10-16 2006-02-28 Mtd Products Inc Connector for flex shaft for string trimmer
US20180177135A1 (en) * 2016-12-23 2018-06-28 Nanjing Chervon Industry Co., Ltd. Power tool and transmission shaft assembly thereof
CN108571871A (zh) * 2017-03-13 2018-09-25 天津东江食品股份有限公司 一种节能的冷冻干燥装置及其冷冻干燥方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4126928A (en) 1977-04-18 1978-11-28 Hoffco, Inc. Method of making a shaft assembly
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
US4295272A (en) 1979-04-28 1981-10-20 Hitachi Koki Company, Limited Vibration control for mowing machine

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5519747Y2 (en, 2012) * 1974-08-29 1980-05-10
JPS5738974Y2 (en, 2012) * 1975-03-22 1982-08-27
JPS5367630U (en, 2012) * 1976-11-10 1978-06-07
JPS5513053A (en) * 1978-07-15 1980-01-29 Xenoah Kk Manufacturing method of support for cutter fitting saft of bush cutter
JPS5865829U (ja) * 1981-10-27 1983-05-04 日立工機株式会社 刈払機の駆動軸連結装置

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4126928A (en) 1977-04-18 1978-11-28 Hoffco, Inc. Method of making a shaft assembly
US4295272A (en) 1979-04-28 1981-10-20 Hitachi Koki Company, Limited Vibration control for mowing machine
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

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4944711A (en) 1988-03-23 1990-07-31 Kioritz Corporation Extendable/retractable operational sleeve
US5020281A (en) * 1989-04-03 1991-06-04 American Pneumatic Technologies, Inc. High speed rotary hand tool with adjustable head coupling
US7004668B2 (en) 2002-10-16 2006-02-28 Mtd Products Inc Connector for flex shaft for string trimmer
US20180177135A1 (en) * 2016-12-23 2018-06-28 Nanjing Chervon Industry Co., Ltd. Power tool and transmission shaft assembly thereof
US10638666B2 (en) * 2016-12-23 2020-05-05 Nanjing Chervon Industry Co., Ltd. Power tool and transmission shaft assembly thereof
CN108571871A (zh) * 2017-03-13 2018-09-25 天津东江食品股份有限公司 一种节能的冷冻干燥装置及其冷冻干燥方法

Also Published As

Publication number Publication date
JPS60190220U (ja) 1985-12-17
JPH0219003Y2 (en, 2012) 1990-05-25

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