USH378H - Spiked bumper - Google Patents

Spiked bumper Download PDF

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Publication number
USH378H
USH378H US06/888,105 US88810586A USH378H US H378 H USH378 H US H378H US 88810586 A US88810586 A US 88810586A US H378 H USH378 H US H378H
Authority
US
United States
Prior art keywords
spiked
bumper
end portion
main body
mounting
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
US06/888,105
Other languages
English (en)
Inventor
Isao Matsumoto
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 USH378H publication Critical patent/USH378H/en
Abandoned 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
    • B27B17/0083—Attachments for guiding or supporting chain saws during operation

Definitions

  • This invention relates to a spiked-bumper of a portable chain saw generally used for felling trees and producing lumber.
  • a chain saw usually has a spiked-bumper mounted to a forward end portion of a main body of the chain saw in a position close to a guide bar for guiding a saw chain in its movement around an outer periphery of the guide bar.
  • the spiked-bumper is caused to press against a tree or a timber positively before a sawing operation is performed to prevent an accident from occurring inadvertently as the main body of the chain saw is pulled suddenly toward the tree or timber or the saw chain slips during operations.
  • spiked-bumper of the prior art Some disadvantages are associated with the spiked-bumper of the prior art. One of them is that the optimum range of application of the spiked-bumper is narrow with regard to the shape and diameter of the trees and timbers constituting the objects of the operation, so that a multiplicity of spiked-bumpers should be provided to be fitted to different types of sizes of chain saw.
  • the invention has been developed for the purpose of obviating the aforesaid disadvantage of the prior art. Accordingly, the invention has as its object the provision of a spiked-bumper of simple construction which is easy to handle and which has a wide range of application with regard to the shape and diameter of the trees and timbers.
  • a spiked-bumper of a chain saw mounted to a forward end portion of a main body of the chain saw in a position close to a guide bar for guiding a saw chain in its movement around an outer periphery of the guide bar, comprising a mounting reference hole formed at one longitudinal end portion of the spiked-bumper for securing the spiked-bumper to the forward end portion of the main body of the chain saw, and at least one mounting adjusting hole formed at an longitudinal opposite end portion of the spiked-bumper in positions located on an arc constituting a part of an imaginary circle which is centered at the center of the mounting reference hole for adjusting the position in which the spiked-bumper is secured to the forward end portion of the main body of the chain saw.
  • the spiked-bumper of the aforesaid construction according to the invention enables the position in which it is mounted to a chain saw to be readily and positively adjusted in conformity with the shape and thickness of a tree or a timber constituting the object of a sawing operation.
  • the spiked-bumper according to the invention is capable of achieving maximum effects in absorbing shocks in a wide range of application and can be commonly used with different types and sizes of chain saw, so that it can improve efficiency in performing the operations of felling trees and producing lumber by sawing timbers.
  • FIG. 1 is a schematic side view, with certain parts being broken away, of a chain saw having a spiked-bumper of the prior art mounted thereto;
  • FIG. 2 is a side view, on an enlarged scale, of the spiked-bumper of the prior art shown in FIG. 1;
  • FIG. 3 is a side view of the spiked-bumper comprising one embodiment of the invention.
  • FIG. 4 is a view in explanation of the manner in which the spiked-bumper shown in FIG. 3 is used.
  • FIG. 5 is a side view, with certain parts being broken away, of the spiked-bumper comprising another embodiment of the invention.
  • FIGS. 1 and 2 Before describing the preferred embodiments of the invention, a conventional chain saw provided with a spiked-bumper of the prior art will be outlined by referring to FIGS. 1 and 2, to enable the invention to be fully understood.
  • the conventional chain saw comprises a main body 1 having mounted therein an internal combustion engine which may be an air-cooled gasoline engine of a small size built in the main body 1 and serving as a power source.
  • the chain saw further comprises a guide bar 2 projecting forwardly from a forward end portion of the main body 1, and a saw chain 3 mounted on an outer periphery of the guide bar 2 for movement around the outer periphery.
  • the saw chain 3 is driven by the internal combustion engine supported in the main body 1 to saw a tree or a timber during operations.
  • a spiked-bumper 4 is mounted to the forward end portion of the main body 1 by a pair of bolts 5 and 6 and located in close proximity to and in parallel with an end portion of the guide bar 2 near the operator.
  • the spiked-bumper 4 which is formed as of steel in the form of a flat bar having round holes 7 and 8 for receiving the bolts 5 and 6 respectively located at longitudinal opposite end portions as clearly seen in FIG. 2, is formed integrally with a plurality of teeth 9, 10, 11, 12, 13 and 14 located at one side thereof and extending outwardly.
  • those teeth 12, 13 and 14 which are located near an end portion of the spiked-bumper 4 formed with the round hole 8 are shaped such that their tips are located on a curve projecting outwardly, and the spiked-bumper 4 is mounted to the forward end portion of the main body 1 in such a manner that the longitudinal end portion formed with the round hole 8 is secured in place by the bolt 6, as shown in FIG. 1, to a lower end portion of the forward end portion of the main body 1 and an opposite longitudinal end portion formed with the round hole 7 is secured in place by the bolt 5 to an upper end portion of the forward end portion of the main body 1.
  • FIG. 3 shows one embodiment of the invention wherein a spiked-bumper 20 formed of a material similar to that used for forming the conventional spiked-bumper 4 shown in FIGS. 1 and 2 is formed with a mounting reference hole 21 at one longitudinal end portion thereof.
  • the bolt 5 shown in FIG. 1 is threadably engaged in the mounting reference hole 21 and connected to the forward end portion of the main body 1 of the chain saw, so that the one longitudinal end portion of the spiked-bumper 20 having the mounting reference hole 21 is secured and rigidly fixed to the upper end portion of the forward end portion of the main body 1.
  • the hole 21 is located beyond the upper edge of the chain guide bar 2.
  • the spiked-bumper 20 is further formed with two mounting adjusting holes 22 and 23 at an longitudinal opposite end portion thereof.
  • the two adjusting mounting holes 22 and 23 each have a center located on a short arc forming a part of an imaginary circle centered at the center of the mounting reference hole 21, it being seen that the length of the arc is smaller than the distance between the hole 21 and the arc.
  • the bolt 6 shown in FIG. 1 is passed through one of the mounting adjusting holes 22 and 23 to secure and rigidly fix the longitudinal opposite end portion of the spiked-bumper 20 to the lower end portion of the forward end portion of the main body 1 of the chain saw, which is beyond the lower edge of the chain guide bar 2.
  • the spiked-bumper 20 is formed integrally with six teeth 24, 25, 26, 27, 28 and 29 located at one side thereof and extending outwardly. Of all the teeth 24-29, those teeth 27, 28 and 29 which are located near the longitudinal opposite end portion formed with the mounting adjusting holes 22 and 23 are shaped such that their tips are located on a substantially straight line, so that they can readily catch against a tree or a timber.
  • the spiked-bumper 20 When an operation is performed to saw a tree T 1 of a relatively large diameter, the bolt 6 is inserted in the mounting adjusting hole 23 and the longitudinal opposite end portion or a lower end portion of the spiked-bumper 20 is secured to the main body 1 in a position close to the main body 1.
  • the chain saw can be optimally positioned against the tree T 1 with the teeth 28 and 29 pressing thereagainst.
  • the bolt 6 is inserted in the mounting adjusting hole 22 and the spiked-bumper 20 is secured to the main body 1 in a position in which the lower end portion of the spiked-bumper 20 projects forwardly.
  • the spiked-bumper 20 is capable of achieving a maximum shock absorbing effect with the teeth 28 and 29 positively pressing against the tree T 2 .
  • FIG. 5 shows another embodiment of the invention in which the spiked-bumper 30 is formed at one longitudinal end portion with a mounting reference hole, not shown, and at an longitudinal opposite end portion with a mounting adjusting slot 31 in the form of an arc forming a part of an imaginary circle which is centered at the center of the mounting reference hole at the one longitudinal end portion of the spiked-bumper 30.
  • the position in which the longitudinal opposite end portion or lower end portion of the spiked-bumper 30 is secured to the main body 1 of the chain saw can be freely selected within the range of the length of the mounting adjusting slot 31.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Sawing (AREA)
  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
  • Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
US06/888,105 1983-11-07 1986-07-18 Spiked bumper Abandoned USH378H (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP1983172150U JPS6080901U (ja) 1983-11-07 1983-11-07 スパイクバンパ−
JP58-172150[U] 1983-11-07

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
US06662499 Continuation 1984-10-18

Publications (1)

Publication Number Publication Date
USH378H true USH378H (en) 1987-12-01

Family

ID=15936487

Family Applications (1)

Application Number Title Priority Date Filing Date
US06/888,105 Abandoned USH378H (en) 1983-11-07 1986-07-18 Spiked bumper

Country Status (3)

Country Link
US (1) USH378H (en))
JP (1) JPS6080901U (en))
DE (1) DE3439569A1 (en))

Cited By (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD558020S1 (en) 2004-07-12 2007-12-25 Husqvarna Ab Chain saw
USD558019S1 (en) 2004-07-07 2007-12-25 Husqvarna Ab Chain saw
USD563747S1 (en) * 2006-07-24 2008-03-11 Andreas Stihl Ag & Co. Kg Chain saw
USD573860S1 (en) * 2007-06-20 2008-07-29 Husqvarna Zenoah Co., Ltd. Main body of a portable chain saw
USD574207S1 (en) * 2006-06-26 2008-08-05 Husqvarna Ab Chain saw body
USD576005S1 (en) * 2007-06-20 2008-09-02 Husqvarna Zenoah Co., Ltd. Main body of a portable chain saw
USD577557S1 (en) * 2007-06-20 2008-09-30 Husqvarna Zenoah Co., Ltd. Main body of a portable chain saw
USD580724S1 (en) * 2004-08-27 2008-11-18 Andreas Stihl Ag & Co. Kg Chain saw
USD606829S1 (en) * 2007-07-04 2009-12-29 Andreas Stihl Ag & Co. Kg Chain saw
USD607292S1 (en) * 2007-04-27 2010-01-05 Andreas Stihl Ag & Co. Kg Chain saw
USD607293S1 (en) * 2007-04-27 2010-01-05 Andreas Stihl Ag & Co. Kg Chain saw
USD732358S1 (en) 2012-08-02 2015-06-23 Andreas Stihl Ag & Co. Kg Battery powered hedge trimmer
USD741678S1 (en) 2012-04-13 2015-10-27 Andreas Stihl Ag & Co. Kg Chain saw for cutting stone
US20150307435A1 (en) * 2012-03-30 2015-10-29 Exxonmobil Chemical Patents Inc. Esterification Process
USD744308S1 (en) 2012-08-02 2015-12-01 Andreas Stihl Ag & Co. Kg Chainsaw
USD758150S1 (en) 2014-04-04 2016-06-07 Andreas Stihl Ag & Co. Kg Cordless trimmer with bike handle
USD758151S1 (en) 2014-04-04 2016-06-07 Andreas Stihl Ag & Co. Kg Cordless trimmer with loop handle
USD763051S1 (en) 2014-04-04 2016-08-09 Andreas Stihl Ag & Co. Kg Chainsaw
USD790303S1 (en) 2015-08-06 2017-06-27 Andreas Stihl Ag & Co. Kg Cordless chainsaw
USD798679S1 (en) 2015-08-06 2017-10-03 Andreas Stihl Ag & Co., Kg Cordless trimmer
USD799286S1 (en) 2015-03-05 2017-10-10 Andreas Stihl Ag & Co. Kg Pole pruner head
USD826021S1 (en) 2016-02-15 2018-08-21 Andreas Stihl Ag & Co., Kg Chain saw
USD830798S1 (en) 2016-06-03 2018-10-16 Andreas Stihl Ag & Co. Kg Battery powered trimmer
USD846960S1 (en) 2016-06-03 2019-04-30 Andreas Stihl Ag & Co. Kg Battery powered hedge trimmer
USD1018234S1 (en) * 2021-07-12 2024-03-19 Westcoast Saw, Llc Pair of felling dogs

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5252197B2 (ja) * 2008-11-14 2013-07-31 株式会社やまびこ チェーンソー

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2572405A (en) 1948-05-25 1951-10-23 Albert F Stone Turret-mounted chain-saw holding claw
US2665719A (en) 1951-12-28 1954-01-12 Pennanen Matt Anchoring device for portable chain sawing machine blades
US2747621A (en) 1951-10-09 1956-05-29 Albert F Stone Chain-saw holding claw
US2813556A (en) 1953-09-29 1957-11-19 Mcculloch Motors Corp Chain saw with spiked reaction attachment
US4123843A (en) 1976-07-17 1978-11-07 Firma Andreas Stihl Spring type guide bar stop for portable power chain saw

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2572405A (en) 1948-05-25 1951-10-23 Albert F Stone Turret-mounted chain-saw holding claw
US2747621A (en) 1951-10-09 1956-05-29 Albert F Stone Chain-saw holding claw
US2665719A (en) 1951-12-28 1954-01-12 Pennanen Matt Anchoring device for portable chain sawing machine blades
US2813556A (en) 1953-09-29 1957-11-19 Mcculloch Motors Corp Chain saw with spiked reaction attachment
US4123843A (en) 1976-07-17 1978-11-07 Firma Andreas Stihl Spring type guide bar stop for portable power chain saw

Cited By (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD558019S1 (en) 2004-07-07 2007-12-25 Husqvarna Ab Chain saw
USD558020S1 (en) 2004-07-12 2007-12-25 Husqvarna Ab Chain saw
USD580724S1 (en) * 2004-08-27 2008-11-18 Andreas Stihl Ag & Co. Kg Chain saw
USD574207S1 (en) * 2006-06-26 2008-08-05 Husqvarna Ab Chain saw body
USD563747S1 (en) * 2006-07-24 2008-03-11 Andreas Stihl Ag & Co. Kg Chain saw
USD607292S1 (en) * 2007-04-27 2010-01-05 Andreas Stihl Ag & Co. Kg Chain saw
USD607293S1 (en) * 2007-04-27 2010-01-05 Andreas Stihl Ag & Co. Kg Chain saw
USD573860S1 (en) * 2007-06-20 2008-07-29 Husqvarna Zenoah Co., Ltd. Main body of a portable chain saw
USD576005S1 (en) * 2007-06-20 2008-09-02 Husqvarna Zenoah Co., Ltd. Main body of a portable chain saw
USD577557S1 (en) * 2007-06-20 2008-09-30 Husqvarna Zenoah Co., Ltd. Main body of a portable chain saw
USD606829S1 (en) * 2007-07-04 2009-12-29 Andreas Stihl Ag & Co. Kg Chain saw
US20150307435A1 (en) * 2012-03-30 2015-10-29 Exxonmobil Chemical Patents Inc. Esterification Process
USD741678S1 (en) 2012-04-13 2015-10-27 Andreas Stihl Ag & Co. Kg Chain saw for cutting stone
USD732358S1 (en) 2012-08-02 2015-06-23 Andreas Stihl Ag & Co. Kg Battery powered hedge trimmer
USD744308S1 (en) 2012-08-02 2015-12-01 Andreas Stihl Ag & Co. Kg Chainsaw
USD758150S1 (en) 2014-04-04 2016-06-07 Andreas Stihl Ag & Co. Kg Cordless trimmer with bike handle
USD758151S1 (en) 2014-04-04 2016-06-07 Andreas Stihl Ag & Co. Kg Cordless trimmer with loop handle
USD763051S1 (en) 2014-04-04 2016-08-09 Andreas Stihl Ag & Co. Kg Chainsaw
USD799286S1 (en) 2015-03-05 2017-10-10 Andreas Stihl Ag & Co. Kg Pole pruner head
USD790303S1 (en) 2015-08-06 2017-06-27 Andreas Stihl Ag & Co. Kg Cordless chainsaw
USD798679S1 (en) 2015-08-06 2017-10-03 Andreas Stihl Ag & Co., Kg Cordless trimmer
USD826021S1 (en) 2016-02-15 2018-08-21 Andreas Stihl Ag & Co., Kg Chain saw
USD830798S1 (en) 2016-06-03 2018-10-16 Andreas Stihl Ag & Co. Kg Battery powered trimmer
USD846960S1 (en) 2016-06-03 2019-04-30 Andreas Stihl Ag & Co. Kg Battery powered hedge trimmer
USD1018234S1 (en) * 2021-07-12 2024-03-19 Westcoast Saw, Llc Pair of felling dogs

Also Published As

Publication number Publication date
JPH0228001Y2 (en)) 1990-07-27
JPS6080901U (ja) 1985-06-05
DE3439569A1 (de) 1985-05-23

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