GB1224975A - Improvements in or relating to portable chain saws - Google Patents

Improvements in or relating to portable chain saws

Info

Publication number
GB1224975A
GB1224975A GB1257569A GB1257569A GB1224975A GB 1224975 A GB1224975 A GB 1224975A GB 1257569 A GB1257569 A GB 1257569A GB 1257569 A GB1257569 A GB 1257569A GB 1224975 A GB1224975 A GB 1224975A
Authority
GB
United Kingdom
Prior art keywords
handle
unit
aligned
axes
coil springs
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
Application number
GB1257569A
Inventor
David Rudelhoff Johnson
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.)
DANARM Ltd
Original Assignee
DANARM 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 DANARM Ltd filed Critical DANARM Ltd
Priority to GB1257569A priority Critical patent/GB1224975A/en
Publication of GB1224975A publication Critical patent/GB1224975A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
    • F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
    • F16F15/04—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means
    • F16F15/06—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with metal springs
    • F16F15/067—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with metal springs using only wound springs
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Percussive Tools And Related Accessories (AREA)

Abstract

1,224,975. Chain saws. DANARM Ltd. 28 Nov., 1969 [10 March, 1969], No. 12575/69. Heading B5L. A portable chain saw comprises a saw body 10 and a handle assembly including a rear handle unit 11 aligned with the longitudinal centre line of the body and resiliently connected thereto by means of a pair of coil springs 24 the axes of which are aligned and extend transversely to the longitudinal centre line, a forward handle 12 in the form of a frame which surrounds the forward part of the body 10 with clearance and is connected thereto at spaced points by coil springs 15, and a rigid member 13 interconnecting the unit 11 and handle 12 so as to form a substantially rigid handle structure. As described, the unit 11 is formed from two complementary castings which together form a socket 14 for the member 13, and a cylindrical housing 20. One end of each coil spring 24 is attached to one end wall of the housing and the other ends of the springs are connected to a lug or bracket 22 on the body 10 and entering the housing 20 through a slot 21. The coil springs 15 may have their axes aligned with the axis of the crank-shaft of the drive for the saw chain or one or both of them may have their axes perpendicular thereto. The unit 11 may include a throttle control connected to the body 10 by a flexible cable.
GB1257569A 1969-03-10 1969-03-10 Improvements in or relating to portable chain saws Expired GB1224975A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1257569A GB1224975A (en) 1969-03-10 1969-03-10 Improvements in or relating to portable chain saws

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1257569A GB1224975A (en) 1969-03-10 1969-03-10 Improvements in or relating to portable chain saws

Publications (1)

Publication Number Publication Date
GB1224975A true GB1224975A (en) 1971-03-10

Family

ID=10007180

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1257569A Expired GB1224975A (en) 1969-03-10 1969-03-10 Improvements in or relating to portable chain saws

Country Status (1)

Country Link
GB (1) GB1224975A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5361500A (en) * 1992-07-17 1994-11-08 Aktiebolaget Electrolux De-vibration element
CN102428838A (en) * 2010-09-29 2012-05-02 日立工机株式会社 Portable working machine

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5361500A (en) * 1992-07-17 1994-11-08 Aktiebolaget Electrolux De-vibration element
CN102428838A (en) * 2010-09-29 2012-05-02 日立工机株式会社 Portable working machine
CN102428838B (en) * 2010-09-29 2015-07-08 日立工机株式会社 Portable working machine

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee