EP0007249A1 - Appareil auxiliaire pour scie à chaîne portative en forme de pompe hydraulique - Google Patents

Appareil auxiliaire pour scie à chaîne portative en forme de pompe hydraulique Download PDF

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Publication number
EP0007249A1
EP0007249A1 EP79301429A EP79301429A EP0007249A1 EP 0007249 A1 EP0007249 A1 EP 0007249A1 EP 79301429 A EP79301429 A EP 79301429A EP 79301429 A EP79301429 A EP 79301429A EP 0007249 A1 EP0007249 A1 EP 0007249A1
Authority
EP
European Patent Office
Prior art keywords
chain
sprocket
attachment
pump
chain saw
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
EP79301429A
Other languages
German (de)
English (en)
Inventor
John Arthur Notaras
Angelo Lambrinos Notaras
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0007249A1 publication Critical patent/EP0007249A1/fr
Ceased legal-status Critical Current

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Classifications

    • 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
    • B27B17/0016—Devices to adapt the chain saw for other purposes, e.g. drilling

Definitions

  • the present invention relates to portable fluid pump apparatus and more particularly but not exclusively to a fluid pump attachment for a chain saw engine or other portable hand-held internal combustion engine.
  • Such apparatus typically comprises a back pack which includes a tank and small internal combustion engine mounted together and arranged to be carried on the back of an operator.
  • the pump is directly connected to the output shaft of the small internal combustion engine, the bearings of which support the pump rotor.
  • the output of the pump is connected to a spray nozzle via a flexible conduit.
  • the operator carries the apparatus on his back and directs the spray by altering the direction in which the nozzle is pointed. Irrespective of the direction of spray, the engine remains in substantially the same position.
  • a portable attachment for a chain saw having an internal combustion engine and a drive sprocket said attachment comprising a housing defining an endless track to receive and guide a driven chain in its movement along a predetermined path, a driven sprocket rotatably attached to the housing at one end and extending into said path for power transmitting engagement with said chain so as to be driven thereby, fluid pump means secured to said housing and attached to said driven sprocket so as to be driven thereby, said housing being adapted at the other end to said one end to be fixed to said engine so that said drive sprocket extends into said path for power transmitting engagement with said chain so as to drive same, and wherein said pump has a fluid inlet for connection to a fluid reservoir and a nozzle outlet, said nozzle being self supporting and directable by movement of the engine by an operator.
  • the attachment described in the above paragraph has the distinct advantage in that.when in use the pump, by being fixed to the power plant of a chain saw, is supported by the user gripping the hand grips of the chain saw thus the output nozzle of the pump is directable by movement of the hand grips.
  • a further advantage is that it is totally portable while in use.
  • sprockets used with chain saws are illustrated in U.S. Patents 3,786,687, 3,868,863, 3,962,929 and 3,279,272. These sprockets are of the flute type described herein. However, they are either part of, self aligning or fixed to a clutch drum and/or hub which is freely rotatable on the engine output shaft so that it is possible for the engine shaft to turn at a different speed to that of the sprocket. Still further the prior art sprockets, as in U .S.
  • Patents 3,786,687 and 3,868,863 are not rigidly connected to the output shaft while the alternate deformations on one side of the discs are fixed to the output plate of the clutch drum thereby closing off alternate depressions in the edge of the disc.
  • the teeth which engage within these openings are prevented by the sprocket arrangement from sideways movement towards either one or both sides.
  • U.S. Patent 3,962,929 there is described a free floating and self aligning and again freely rotatable sprocket.
  • the flute of these known sprockets are box like flute structures which allow lateral movement of the saw chain.
  • a butterfly sprocket to be driven by a chain and to be rigidly connected to a shaft to be driven by the chain via said sprocket, said sprocket being of a general disc-shaped formed from sheet metal with alternate radially extending undulating wave type troughs and peaks which are spaced angularly around the disc so that the disc has portions spaced alternately on different sides. of the plane of the discs so as to form the troughs to drivingly receive portions of the chain.
  • Fig. 2 illustrates a liquid pump attachment of the preferred embodiment which is suitable for operation from a small portable hand held internal combustion engine which preferably comprises chain saw engine 1.
  • the liquid pump attachment 2 comprises a blade 3 which is securable to the chain saw engine 1 by means of bolts 4, nuts 5, and tensioning lug 6.
  • the bolts 5 and lug 6 pass through a T-shaped slot 7 in the blade 3.
  • the blade 3 has two grooves 8, only the upper groove 8 being illustrated, which form a track for a transmission chain 9 having interior driving teeth 17.
  • the transmission chain 9 is driven by a conventional chain saw sprocket arrangement 10 which is directly connected to the output of a centrifugal clutch (not illustrated) which comprises part of the chain saw engine 1.
  • the chain 9 passes over butterfly sprocket 11 which is rigidly connected to one end of a shaft (not illustrated) rotatably mounted in the pump assembly 2.
  • This shaft comprises the driven shaft of a liquid pump 12.
  • the outlet 13 of the pump 12 is connected via a rigid conduit 14 to a nozzle 15.
  • a cover plate 16 provides protection from the moving chain 9 for the operator.
  • the inlet (not illustrated) of the liquid pump 12 is connected by means of a flexible hose (not illustrated) to a suitable reservoir of liquid (not illustrated).
  • a suitable reservoir of liquid not illustrated.
  • the liquid reservoir comprises a tank adapted to be carried on the back of an operator and therefore the chain saw engine and attachment together with the tank may be used to replace a conventional knapsack spray.
  • the chain saw engine is of relatively light weight and is easily manipulated by the operator, not only does this arrangement overcome the need for the operator to manually pump liquid from the reservoir but the liquid is pumped at a much greater rate, and over much greater distances, than hitherto.
  • the direction in which the liquid is sprayed by the nozzle 15 is easily controlled by the operator altering the position and angle at which the chain saw engine 1 is held.
  • This particular embodiment of the present invention finds application in the fighting of bush forest fires, the spraying of crops, weeds and orchards, and similar such applications.
  • the butterfly sprocket 11 of Fig. 2 is illustrated in an edge elevation in Fig. 1. From both Figs. 1 and 2 it will be seen that the butterfly sprocket 11 comprises a flat disc having a deformed annular region at its periphery. The edge 20 of the sprocket 11 is formed into an approximately zig-zag shape so as to provide a plurality of angulated regions 21 which are equally spaced from the plane of the disc. Adjacent regions 21 are displaced equally from the plane of the disc but in opposite directions. It will be seen from Figs. 1 and 2 that the interior teeth 17 of the transmission chain 9 are received by the shaped edge 20 of the sprocket 11.
  • the butterfly sprocket 11 has not been used but rather a sprocket made from two identical spaced parallel discs has been used.
  • the discs are maintained in position by a plurality of small spacers located between the discs at regularly spaced intervals around the peripheries.
  • the opening between each spacer is dimensioned to receive the interior teeth 17 of the. drive chain 9.
  • Such an arrangement is relatively expensive to make since the spacers and discs must be welded or rivet- ted together in order to provide an integral structure of sufficient strength.
  • This disadvantage is overcome in accordance with the present invention since the butterfly sprocket 11 may be stamped in a single operation from a flat sheet of metal.
  • Such a sprocket is illustrated in the sprocket arrangement 10 of Fig. 2. However, the deformed disc of this arrangement is not free standing as is the sprocket 11 in Fig. 2.
  • the present sprocket 11 provides for only every second one ox the interior teeth 17 being prevented from moving to one particular side by the sprocket 11. The remaining interior teeth 17 are prevented from moving in the opposite direction to the other side by the sprocket 11.
  • the sprocket 11 is rigidly fixed to the driven shaft so that it rotates at the same R.P.M. as the shaft always remains fixed in the same plane. Furthermore, the flute like arrangements of the outer diameter of the sprocket 11 are angulated in contrast to the square shaped formations of all the prior art.. This angulated formation locates the transmission chain in a fixed plane with no sideways movement due to the wedge shaped action of the flute arrangement. The zig zag shape of sprocket 11 plus the angulated regions 21 force the transmission chain driving teeth into a laterally fixed position thus providing a secure and lower wearing driven sprocket arrangement.
  • the present invention is applicable to all fluids including both liquids and gases, and Figs. 3 to 6 inclusive illustrate embodiments of chain saw attachments having different types of fluid pump.
  • the fluid pump comprises a gas blast compressor or similar such centrifugal gas pump and, in use, provides a concentrated blast of gas or air which may be used for cleaning purposes, such as blasting; spraying atomised or misted liquids; and other such applications.
  • Figs. 4 to 6 inclusive illustrate liquid pumps of known construction but different operating principles assembled so as to form a chain saw attachment.
  • conduit 14 of Fig. 2 is described as rigid, in accordance with the present invention, such a conduit may be flexible so long as the nozzle 15 is supported. Thus if the nozzle 15 does not droop excessively, the flexible conduit 14 may be used to spray a relatively broad swathe by reciprocally moving the chain saw engine to and fro in a horizontal plane thereby causing the nozzle 15 to move through a horizontal arc.
  • connection between the fluid pump means and the engine may be direct and/or via a clutch, which may or may not include a gear train, or via a chain drive (as described in detail) or via a belt drive.
  • the fluid pump means can be secured to the output shaft of the engine either directly or via flexible coupling or universal joint.
  • One advantage of the present invention is that the operator changes the position and/or angle in which the pump and/or engine is held in order to change the direction in which the nozzle points.
  • the invention embraces portable hand-held pumps to which a small driving engine is connected such that the combination of pump and engine is portable and hand-held.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Special Spraying Apparatus (AREA)
EP79301429A 1978-07-19 1979-07-18 Appareil auxiliaire pour scie à chaîne portative en forme de pompe hydraulique Ceased EP0007249A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
AU5137/78 1978-07-19
AU513778 1978-07-19
AU519078 1978-07-24
AU5190/78 1978-07-24

Publications (1)

Publication Number Publication Date
EP0007249A1 true EP0007249A1 (fr) 1980-01-23

Family

ID=25611105

Family Applications (1)

Application Number Title Priority Date Filing Date
EP79301429A Ceased EP0007249A1 (fr) 1978-07-19 1979-07-18 Appareil auxiliaire pour scie à chaîne portative en forme de pompe hydraulique

Country Status (1)

Country Link
EP (1) EP0007249A1 (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0051853A1 (fr) * 1980-11-10 1982-05-19 Zanutto, Gabriella née Marigonda Fendeuse hydraulique munie d'un entraînement à partir d'une tronçonneuse à chaine
FR2521690A1 (fr) * 1982-02-17 1983-08-19 Notaras John Capot de protection
WO1995014557A1 (fr) * 1993-11-24 1995-06-01 Peri Marshall Grant Raccord pour tronçonneuse
US6112419A (en) * 1997-12-02 2000-09-05 Andreas Stihl Ag & Co. Cutter head with cover for drive pinion
CN102303324A (zh) * 2011-06-24 2012-01-04 无锡洲翔成套焊接设备有限公司 便于拆卸维修的冲孔机剪断动力装置
WO2012113174A1 (fr) * 2011-02-23 2012-08-30 嘉兴亚特园林机械研究所 Structure améliorée pour l'installation d'une plaque de chaîne d'une scie à chaîne électrique
US10315328B2 (en) 2015-11-09 2019-06-11 Trigger Point Innovations, Llc Portable pump systems, chainsaw accessories, and chainsaw pump accessory kits
US11090832B1 (en) * 2018-09-06 2021-08-17 Trigger Point Innovations, Llc Portable pump systems, chainsaw accessories, and chainsaw pump accessory kits

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2783794A (en) * 1955-07-11 1957-03-05 Roland F Kroll Chain saw attachment for operating rotatable tools
US3197162A (en) * 1962-05-16 1965-07-27 Herbert W Johanson Chain saw adapter and attachment for operating power driven mechanisms
US3857515A (en) * 1974-04-04 1974-12-31 M Zennie Liquid spray device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2783794A (en) * 1955-07-11 1957-03-05 Roland F Kroll Chain saw attachment for operating rotatable tools
US3197162A (en) * 1962-05-16 1965-07-27 Herbert W Johanson Chain saw adapter and attachment for operating power driven mechanisms
US3857515A (en) * 1974-04-04 1974-12-31 M Zennie Liquid spray device

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0051853A1 (fr) * 1980-11-10 1982-05-19 Zanutto, Gabriella née Marigonda Fendeuse hydraulique munie d'un entraînement à partir d'une tronçonneuse à chaine
FR2521690A1 (fr) * 1982-02-17 1983-08-19 Notaras John Capot de protection
WO1995014557A1 (fr) * 1993-11-24 1995-06-01 Peri Marshall Grant Raccord pour tronçonneuse
US6112419A (en) * 1997-12-02 2000-09-05 Andreas Stihl Ag & Co. Cutter head with cover for drive pinion
WO2012113174A1 (fr) * 2011-02-23 2012-08-30 嘉兴亚特园林机械研究所 Structure améliorée pour l'installation d'une plaque de chaîne d'une scie à chaîne électrique
CN102303324A (zh) * 2011-06-24 2012-01-04 无锡洲翔成套焊接设备有限公司 便于拆卸维修的冲孔机剪断动力装置
CN102303324B (zh) * 2011-06-24 2013-04-17 无锡洲翔成套焊接设备有限公司 便于拆卸维修的冲孔机剪断动力装置
US10315328B2 (en) 2015-11-09 2019-06-11 Trigger Point Innovations, Llc Portable pump systems, chainsaw accessories, and chainsaw pump accessory kits
US11090832B1 (en) * 2018-09-06 2021-08-17 Trigger Point Innovations, Llc Portable pump systems, chainsaw accessories, and chainsaw pump accessory kits

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Effective date: 19810723

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Effective date: 19830829