US20050050738A1 - Trimmer head - Google Patents

Trimmer head Download PDF

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Publication number
US20050050738A1
US20050050738A1 US10/952,605 US95260504A US2005050738A1 US 20050050738 A1 US20050050738 A1 US 20050050738A1 US 95260504 A US95260504 A US 95260504A US 2005050738 A1 US2005050738 A1 US 2005050738A1
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US
United States
Prior art keywords
head
trimmer
trimmer head
wear guide
wear
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
US10/952,605
Inventor
David Harris
Roy Bridges
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CONCEPTUAL MARKETING AND DEVELOPMENT
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Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to US10/952,605 priority Critical patent/US20050050738A1/en
Publication of US20050050738A1 publication Critical patent/US20050050738A1/en
Assigned to CONCEPTUAL MARKETING AND DEVELOPMENT reassignment CONCEPTUAL MARKETING AND DEVELOPMENT ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: HARRIS, DAVID, BRIDGES, ROY
Abandoned legal-status Critical Current

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    • 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
    • A01D34/73—Cutting apparatus
    • A01D34/736—Flail type
    • 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
    • A01D34/73—Cutting apparatus
    • A01D34/733—Cutting-blade mounting means

Definitions

  • the present invention relates to heads for attachment to rotary vegetation cutting devices.
  • FIG. 1 is an exploded perspective view of a trimmer head according to an embodiment of the present invention.
  • FIG. 2 is a top view of a trimmer head according to an embodiment of the present invention.
  • FIG. 3 is a bottom view of a trimmer head according to an embodiment of the present invention.
  • FIG. 4 is a top view of a bottom plate of a trimmer head according to an embodiment of the present invention.
  • FIG. 5 is a side cut-away view of a trimmer head according to an embodiment of the present invention, taken along line 5 - 5 in FIG. 2 .
  • FIG. 6 is a side view of a trimmer head according to an embodiment of the present invention.
  • FIG. 7 is a bottom view of a trimmer head according to an embodiment of the present invention.
  • FIG. 8 is a side cut-away view of a trimmer head according to an embodiment of the present invention, taken along line 8 - 8 as depicted in FIG. 7 .
  • FIG. 9 is a bottom view of a top plate of a trimmer head according to an embodiment of the present invention.
  • FIG. 10 is a perspective view of the interior surface of the top plate.
  • FIG. 11 is a perspective view of an embodiment of a trimmer head blade.
  • FIG. 12 is a top view of the blade depicted in FIG. 11 .
  • FIG. 13 is a side view of the blade depicted in FIG. 11 .
  • FIG. 14 is a cut-away side view of the blade depicted in FIG. 12 , taken along lines 14 - 14 .
  • FIG. 15 is a front view of the blade depicted in FIG. 11 .
  • FIG. 16 is a side view of a trimmer head according to an alternative embodiment of the present invention, with a protrusion wear guide on the side.
  • FIG. 17 is a side view of a trimmer head according to an alternative embodiment of the present invention, with a protrusion wear guide on the bottom.
  • FIG. 18 is a side view of a trimmer head according to an alternative embodiment of the present invention, with a indentation wear guide on the side.
  • the present invention is a trimmer head, for attachment to a rotary vegetation cutter. It is comprised of a body and blades. In one embodiment, the body is comprised of a top plate, bottom plate, and pins.
  • the top plate, 20 is a one-piece plate that fits over the bottom plate.
  • a central bore 30 extends through the top plate, and the bore is sized so as to accommodate the arbor or shaft of a trimmer.
  • the top plate 20 has a first set of pin bores 40 , 42 , and 44 on its interior surface for holding pins 130 , 132 , and 134 .
  • the top plate also has a plate coupling well 50 , which fits with the coupling boss 80 of the bottom plate 60 when the top plate 20 and bottom plate 60 are joined together.
  • the top plate is triangular shaped, although it could also be a number of other difference shapes, including circular, square, or octagonal. etc.
  • the bottom plate 60 is a one-piece plate that fits with the top plate 20 and pins to form the body of the trimmer head.
  • the bottom plate 60 has a base 70 that extends upwardly from the bottom plate.
  • the base 70 houses a second set of pin bores 90 , 92 , and 94 that can be aligned with the first set of pin bores 40 , 42 and 44 .
  • Atop the base is a coupling boss 80 that is shaped and aligned so as to conjoin with the top plate's coupling well 50 .
  • the central bore 30 extends through the bottom plate.
  • the attachment depression is essentially the hollow interior of the base 70 and the coupling boss 80 , and in one embodiment of the invention the depression is circular and has a circumference less than the circumference of the coupling boss.
  • the fastener well 120 which has side wall 122 and fitted opening 124 .
  • the central bore 30 extends through the fastener well.
  • the bottom plate is circular, although it could also be a number of other different shapes, including triangular, scalloped-shape for easy removal by hand, etc.
  • the trimmer head is attached to a rotary vegetation cutter by inserting the shaft of the trimmer all the way through the central bore 30 , and by placing a fastener, such as a hex nut or bolt, in the fastener well and securing it to the shaft.
  • the trimmer head is designed to work with many different kinds of trimmers, and therefore different fasteners may be necessary to fit the head to different trimmers.
  • the exterior surface of the bottom plate also may have wear guides 100 and 102 .
  • These wear guides are depressions or indentations, and as the bottom plate wears away from use, the wear guides become shallower and shallower. The user can then decide when to replace the trimmer head based on the depth of the wear guides.
  • Other suitable wear guides could be fashioned from a protrusion that would wear away with use, tire-type treads that would wear down, or a subsurface of a different color that would be apparent when the plate wears down.
  • the wear guide could be placed on any portion of the body that wears down from contact or use, including but not limited to the bottom or side.
  • FIGS. 7 and 8 show indentations 100 , 102 on the bottom
  • FIG. 16 shows a protrusion 106 on the side
  • FIG. 17 shows a protrusion 103 on the bottom
  • FIG. 18 shows an indentation 105 on the side.
  • “Wear guide” refers to any structure that indicates the deterioration of the body of the trimmer head. “Body” refers generically to any blade-holding piece or pieces, such as the top plate and bottom plate. “Bottom portion” refers to the exterior surface of the bottom plate, or in the case of unibody versions of this invention, the bottom portion of the unibody. “Side portion” refers to any side or lateral portion of the top or bottom plate, and in the case of unibody versions of this invention, refers to any side or lateral portion of the unibody.
  • the top plate and bottom plate are held together with pins 130 , 132 , and 134 , which fit into the first set of pin bores, 40 , 42 , and 44 and into the second set of pin bores 90 , 92 , and 94 , as illustrated in FIG. 1 .
  • the pins are sized to tightly fit within the pins bores 40 , 42 , and 44 (described below), so that pins become a part of the top plate.
  • the blades 140 , 142 , and 144 have openings 160 , 162 , and 164 at one end, and the blades are attached to the body by inserting the pins through the openings and into the first set of pin bores and second set of pin bores, as illustrated in FIG. 1 .
  • the blades, which rotate and pivot around the pins with the movement of the shaft, may have serrations 150 , 152 , 154 to enhance their cutting ability.
  • the blade itself, 190 is made of metal, but has a plastic overcoat, 180 , as well as an opening 200 , for insertion of the pins.
  • the top plate, bottom plate and blades can be made of plastic, and other materials such as aluminum.
  • the pins can be made of metal, such as steel, and also could be made of other materials.
  • the top plate and bottom plate can be made by injection molding, or machined using lathes and drill presses.
  • One skilled in the art will appreciate that the present invention can be practiced by other than the described embodiments, which are presented for purposes of illustration and not limitation.

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  • Life Sciences & Earth Sciences (AREA)
  • Environmental Sciences (AREA)
  • Harvester Elements (AREA)

Abstract

A trimmer head for use with rotary vegetation cutting devices is disclosed. The head has a wear guide that indicates when the body of the trimmer head is worn down and needs replacement. In an embodiment of the invention, the body comprises two plates that are molded to fit together. The plates have bores for holding connecting pins. The connecting pins not only hold the plates together, but also pivotably support cutting blades, by fitting into openings in the blades.

Description

    RELATED APPLICATION
  • The present application is a continuation of U.S. application Ser. No. 10/127,924, filed on Apr. 23, 2002.
    • FIELD OF THE INVENTION
  • The present invention relates to heads for attachment to rotary vegetation cutting devices.
    • BRIEF DESCRIPTION OF THE DRAWINGS
  • FIG. 1 is an exploded perspective view of a trimmer head according to an embodiment of the present invention.
  • FIG. 2 is a top view of a trimmer head according to an embodiment of the present invention.
  • FIG. 3 is a bottom view of a trimmer head according to an embodiment of the present invention.
  • FIG. 4 is a top view of a bottom plate of a trimmer head according to an embodiment of the present invention.
  • FIG. 5 is a side cut-away view of a trimmer head according to an embodiment of the present invention, taken along line 5-5 in FIG. 2.
  • FIG. 6 is a side view of a trimmer head according to an embodiment of the present invention.
  • FIG. 7 is a bottom view of a trimmer head according to an embodiment of the present invention.
  • FIG. 8 is a side cut-away view of a trimmer head according to an embodiment of the present invention, taken along line 8-8 as depicted in FIG. 7.
  • FIG. 9 is a bottom view of a top plate of a trimmer head according to an embodiment of the present invention.
  • FIG. 10 is a perspective view of the interior surface of the top plate.
  • FIG. 11 is a perspective view of an embodiment of a trimmer head blade.
  • FIG. 12 is a top view of the blade depicted in FIG. 11.
  • FIG. 13 is a side view of the blade depicted in FIG. 11.
  • FIG. 14 is a cut-away side view of the blade depicted in FIG. 12, taken along lines 14-14.
  • FIG. 15 is a front view of the blade depicted in FIG. 11.
  • FIG. 16 is a side view of a trimmer head according to an alternative embodiment of the present invention, with a protrusion wear guide on the side.
  • FIG. 17 is a side view of a trimmer head according to an alternative embodiment of the present invention, with a protrusion wear guide on the bottom.
  • FIG. 18 is a side view of a trimmer head according to an alternative embodiment of the present invention, with a indentation wear guide on the side.
    • DETAILED DESCRIPTION
  • The present invention is a trimmer head, for attachment to a rotary vegetation cutter. It is comprised of a body and blades. In one embodiment, the body is comprised of a top plate, bottom plate, and pins.
  • As illustrated in FIGS. 1, 2 & 6, the top plate, 20, is a one-piece plate that fits over the bottom plate. A central bore 30 extends through the top plate, and the bore is sized so as to accommodate the arbor or shaft of a trimmer. As illustrated in FIG. 9, the top plate 20 has a first set of pin bores 40, 42, and 44 on its interior surface for holding pins 130, 132, and 134. The top plate also has a plate coupling well 50, which fits with the coupling boss 80 of the bottom plate 60 when the top plate 20 and bottom plate 60 are joined together.
  • As illustrated in FIG. 1, in an embodiment of the invention the top plate is triangular shaped, although it could also be a number of other difference shapes, including circular, square, or octagonal. etc.
  • As illustrated in FIGS. 1, 2, 3, 4, 5, 6, and 7, the bottom plate 60 is a one-piece plate that fits with the top plate 20 and pins to form the body of the trimmer head. The bottom plate 60 has a base 70 that extends upwardly from the bottom plate. The base 70 houses a second set of pin bores 90, 92, and 94 that can be aligned with the first set of pin bores 40, 42 and 44. Atop the base is a coupling boss 80 that is shaped and aligned so as to conjoin with the top plate's coupling well 50. The central bore 30 extends through the bottom plate.
  • On the exterior or bottom surface of the bottom plate is a shaft attachment depression 110 within which is a fastener well 120. As illustrated in FIG. 10, the attachment depression is essentially the hollow interior of the base 70 and the coupling boss 80, and in one embodiment of the invention the depression is circular and has a circumference less than the circumference of the coupling boss. Within the attachment depression 110 is the fastener well 120, which has side wall 122 and fitted opening 124. The central bore 30 extends through the fastener well.
  • As illustrated in the above-referenced figures, in an embodiment of the invention the bottom plate is circular, although it could also be a number of other different shapes, including triangular, scalloped-shape for easy removal by hand, etc.
  • The trimmer head is attached to a rotary vegetation cutter by inserting the shaft of the trimmer all the way through the central bore 30, and by placing a fastener, such as a hex nut or bolt, in the fastener well and securing it to the shaft. The trimmer head is designed to work with many different kinds of trimmers, and therefore different fasteners may be necessary to fit the head to different trimmers.
  • As shown in FIGS. 7 and 8, the exterior surface of the bottom plate also may have wear guides 100 and 102. These wear guides are depressions or indentations, and as the bottom plate wears away from use, the wear guides become shallower and shallower. The user can then decide when to replace the trimmer head based on the depth of the wear guides. Other suitable wear guides could be fashioned from a protrusion that would wear away with use, tire-type treads that would wear down, or a subsurface of a different color that would be apparent when the plate wears down. The wear guide could be placed on any portion of the body that wears down from contact or use, including but not limited to the bottom or side. FIGS. 7 and 8 show indentations 100, 102 on the bottom, FIG. 16 shows a protrusion 106 on the side, FIG. 17 shows a protrusion 103 on the bottom, and FIG. 18 shows an indentation 105 on the side.
  • For purposes of this patent, the following definitions apply. “Wear guide” refers to any structure that indicates the deterioration of the body of the trimmer head. “Body” refers generically to any blade-holding piece or pieces, such as the top plate and bottom plate. “Bottom portion” refers to the exterior surface of the bottom plate, or in the case of unibody versions of this invention, the bottom portion of the unibody. “Side portion” refers to any side or lateral portion of the top or bottom plate, and in the case of unibody versions of this invention, refers to any side or lateral portion of the unibody.
  • The top plate and bottom plate are held together with pins 130, 132, and 134, which fit into the first set of pin bores, 40, 42, and 44 and into the second set of pin bores 90, 92, and 94, as illustrated in FIG. 1. The pins are sized to tightly fit within the pins bores 40, 42, and 44 (described below), so that pins become a part of the top plate.
  • The blades 140, 142, and 144 have openings 160, 162, and 164 at one end, and the blades are attached to the body by inserting the pins through the openings and into the first set of pin bores and second set of pin bores, as illustrated in FIG. 1. The blades, which rotate and pivot around the pins with the movement of the shaft, may have serrations 150, 152, 154 to enhance their cutting ability.
  • As shown in FIGS. 11-15, in an alternative blade embodiment, 170, the blade itself, 190, is made of metal, but has a plastic overcoat, 180, as well as an opening 200, for insertion of the pins.
  • The top plate, bottom plate and blades can be made of plastic, and other materials such as aluminum. The pins can be made of metal, such as steel, and also could be made of other materials.
  • The top plate and bottom plate can be made by injection molding, or machined using lathes and drill presses. One skilled in the art will appreciate that the present invention can be practiced by other than the described embodiments, which are presented for purposes of illustration and not limitation.

Claims (15)

1.) A method of cutting vegetation, comprising:
providing a trimmer with a head, said head having a wear guide;
trimming vegetation with said trimmer;
inspecting said wear guide; and
replacing said head when said wear guide appears worn.
2.) The method according to claim 1, wherein said head has a bottom, and wherein said wear guide is on said bottom.
3.) The method according to claim 2, wherein said wear guide is a protrusion.
4.) The method according to claim 2, wherein said wear guide is a depression.
5.) A trimmer head comprising:
a body, said body having a wear guide for use in determining when to replace said body; and
a cutting blade attached to said body.
6.) The trimmer head according to claim 5, wherein said body has a bottom portion, and wherein said wear guide is on said bottom portion.
7.) The trimmer head according to claim 6, wherein said wear guide comprises a depression in said bottom portion.
8.) The trimmer head according to claim 6, wherein said wear guide comprises a protrusion in said bottom portion.
9.) The trimmer head according to claim 5, wherein said body has a side portion, and wherein said wear guide is on said side portion
10.) The trimmer head according to claim 9, wherein said wear guide comprises a depression in said side portion.
11.) The trimmer head according to claim 9, wherein said wear guide comprises a protrusion in said side portion.
12.) The trimmer head according to claim 5, wherein said blade is made of metal, and has a plastic overcoat.
13.) A method of cutting vegetation, comprising:
providing a trimmer, comprising:
a head;
means for cutting associated with said head; and
means for determining whether to replace said head;
cutting vegetation with said trimmer; and
inspecting said means for determining whether to replace said head.
14.) The method according to claim 13, additionally comprising replacing said head when said step of inspecting said means for determining whether to replace said head indicates that said head is worn.
15.) The method according to claim 13, additionally comprising continuing to use said head when said step of inspecting said means for determining whether to replace said head indicates that said head is not worn.
US10/952,605 2002-04-23 2004-09-30 Trimmer head Abandoned US20050050738A1 (en)

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US10/127,924 US6817102B2 (en) 2002-04-23 2002-04-23 Trimmer head
US10/952,605 US20050050738A1 (en) 2002-04-23 2004-09-30 Trimmer head

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US10/127,924 Continuation US6817102B2 (en) 2002-04-23 2002-04-23 Trimmer head

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070180706A1 (en) * 2006-02-03 2007-08-09 Lauro Guerra Rotary head for garden trimmers, of the type comprising pivoted cutter means
US20080196255A1 (en) * 2007-02-16 2008-08-21 Gordon Strader Powered weed trimmer cutting head and method
US20110232109A1 (en) * 2007-02-16 2011-09-29 Gordon Strader Powered weed trimmer cutting head and method
US20130111863A1 (en) * 2011-11-07 2013-05-09 Kondex Corporation Disc Mower Blades
USD767639S1 (en) 2015-04-09 2016-09-27 Kondex Corporation Sugar cane harvester base cutter knife
USD768727S1 (en) 2015-04-09 2016-10-11 Kondex Corporation Corn header chopper knife
US20180220583A1 (en) * 2017-02-08 2018-08-09 Andreas Stihl Ag & Co. Kg Cutter Head for a Brushcutter

Families Citing this family (32)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7290383B2 (en) * 2004-09-03 2007-11-06 David Harris Trimmer blade
ITMI20050288U1 (en) * 2005-08-03 2007-02-04 Lauro Guerra STRUCTURE OF CUTTING ELEMENT FOR BRUSH CUTTER
EP1997364B1 (en) * 2006-03-20 2013-05-08 Kabushiki Kaisha Kitamura Seisakusho Ground surface slide guide of lawn mower and lawn mower
US7913401B2 (en) * 2006-07-12 2011-03-29 Kwik Products, Inc. Three-in one trimmer head
GB2462745B (en) * 2007-04-10 2011-09-28 Acco Brands Usa Llc Sheet trimmer
US20100083506A1 (en) * 2008-10-03 2010-04-08 Bennett James A Head section for a rotary cutting device including blades and individual cutting lines
US20110253399A1 (en) * 2010-04-16 2011-10-20 Wagner Fredric P Soil and vegetation tool
IT1400315B1 (en) * 2010-06-07 2013-05-24 Ime S A S MULTIBLADE BLADE HEAD OF ADJUSTABLE IMPACT ABSORPTION FOR BRUSHCUTTERS.
CN201839623U (en) * 2010-09-16 2011-05-25 杨树生 Blade of brush cutter
US9078394B2 (en) * 2010-09-24 2015-07-14 Ambush Heads, Llc Cutting head for string trimmer
DE102011005252A1 (en) * 2011-03-08 2012-09-13 Deere & Company Mower disc with a mower blade and a holder
US8776489B2 (en) 2012-03-21 2014-07-15 Deere & Company Mowing cutter disc having a mowing blade and a holder
US10070583B2 (en) * 2012-08-09 2018-09-11 Orlando Jerez Blade for use with rotary head assembly
US9010078B2 (en) * 2012-08-09 2015-04-21 Randy MacDonald Weed trimmer with a wingnut plate
ITFI20120219A1 (en) * 2012-10-19 2014-04-20 Arnetoli Motor Srl MULTI-FUNCTION GRASS CUTTER HEAD
US8973274B2 (en) * 2013-01-23 2015-03-10 Proulx Manufacturing, Inc. Fixed line head for flexible line rotary trimmers
US20150096279A1 (en) * 2013-10-04 2015-04-09 Deere & Company Reel finger with alignment pin
US10278327B2 (en) * 2014-05-09 2019-05-07 Shakespeare Company, Llc Trimmer head for use with line and blades
US10070582B2 (en) 2016-04-20 2018-09-11 Tti (Macao Commercial Offshore) Limited String trimmer head
US10426082B1 (en) * 2016-06-15 2019-10-01 Rodney G. Long Rotary cutter systems and methods
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MX2020000525A (en) * 2019-01-25 2020-08-20 Techtronic Cordless Gp Trimmer head assembly for a trimmer.
US11856885B1 (en) * 2019-03-09 2024-01-02 Jason Olin Multiuse blade assembly
USD949206S1 (en) * 2020-12-16 2022-04-19 Mtd Products Inc Cutting blade
US12082526B2 (en) 2021-07-30 2024-09-10 Tecomec S.R.L. Head for brush cutters
IT202100020423A1 (en) * 2021-07-30 2023-01-30 Tecomec Srl HEAD FOR BRUSH CUTTER
USD995572S1 (en) * 2021-12-23 2023-08-15 Yiwu Shunge Trading Co., Ltd. Lawn mower blade
USD995573S1 (en) * 2021-12-23 2023-08-15 Yiwu Shunge Trading Co., Ltd. Lawn mower blade
USD1024138S1 (en) * 2022-07-20 2024-04-23 Yiwu Guanze Trading Co., Ltd. Lawn mower blade
USD1024139S1 (en) * 2022-09-15 2024-04-23 Yiwu Guanze Trading Co., Ltd. Lawn mower blade
USD1021965S1 (en) * 2022-09-16 2024-04-09 Yiwu Guanze Trading Co., Ltd. Lawn mower blade

Citations (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3138224A (en) * 1962-04-30 1964-06-23 Andrew J White Brake having means to indicate wear
US3414272A (en) * 1966-03-11 1968-12-03 John B. Rogers Jr. Piston rings
US3929179A (en) * 1973-12-05 1975-12-30 Kennametal Inc Indicator device for indicating tread wear and tire incorporating the indicator
US4300336A (en) * 1979-09-10 1981-11-17 Echo, Incorporated Cutter blade assembly for weed and grass trimmers
US5010650A (en) * 1988-09-02 1991-04-30 Omnimart Distributions Inc. Seam cutter
US5303574A (en) * 1991-02-12 1994-04-19 Hughes Aircraft Company Evaluation of the extent of wear of articles
US5388331A (en) * 1994-01-28 1995-02-14 Doroodian-Shoja Siamak Wear indicator for a disposable razor
US5617636A (en) * 1995-06-30 1997-04-08 Taggett; Peter T. Trail blazing stumpcutter
US5894682A (en) * 1997-04-08 1999-04-20 Broz; Joseph S. Shoe with built-in diagnostic indicator of biomechanical compatibility, wear patterns and functional life of shoe, and method of construction thereof
US6041467A (en) * 1997-07-03 2000-03-28 Gillette Canada Inc. Toothbrush
US6112416A (en) * 1997-12-16 2000-09-05 Bridges; Roy Weed and grass trimmer attachment head
US6119350A (en) * 1997-05-23 2000-09-19 Trim-A-Lawn Corporation Rotary cutting member for lawn trimmers
US6129297A (en) * 1997-07-30 2000-10-10 Martin Marietta Materials, Inc. Cone crusher with wear indicator
US6234796B1 (en) * 1998-06-05 2001-05-22 Vdw Gmbh Dental root canal treatment
US6293349B1 (en) * 1999-08-13 2001-09-25 Black & Decker Inc. Edger
US6295733B1 (en) * 1994-08-03 2001-10-02 Warner-Lambert Company Changeable color shaving aid
US6354008B1 (en) * 1997-09-22 2002-03-12 Sanyo Electric Co., Inc. Sliding member, inner and outer blades of an electric shaver and film-forming method
US6368189B1 (en) * 1999-03-03 2002-04-09 Mitsubishi Materials Corporation Apparatus and method for chemical-mechanical polishing (CMP) head having direct pneumatic wafer polishing pressure
US6457566B1 (en) * 2001-02-26 2002-10-01 Brake Parts Inc. Disk brake rotor with visual wear indicator
US6499414B2 (en) * 1998-04-15 2002-12-31 Case Corporation Seed metering system with improved wear enhancement
US6513370B1 (en) * 1998-04-17 2003-02-04 Mark Helton Wear indicator for sports balls
US6854593B2 (en) * 2002-11-15 2005-02-15 Jean-Marc Boudreau Pad-type idler for conveyor belts

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4856194A (en) * 1987-09-15 1989-08-15 Lee Anthony L Cutting attachment for trimmers
US5345683A (en) * 1991-01-14 1994-09-13 Takahiro Kanou Rotary cutter for mowing machine
US5430943A (en) 1992-12-10 1995-07-11 Lee; Anthony L. Unitary cutting attachment for vegetation cutting devices
US5491962A (en) * 1993-11-17 1996-02-20 Trim-A-Lawn Corporation Cutting head assembly
SE504183C2 (en) 1993-12-01 1996-12-02 Swing Cut Ab Cutting tool with hover power
US5722172A (en) * 1996-02-08 1998-03-03 Lebever Co. Cutting attachment for rotary cutting apparatus
US6052907A (en) 1997-04-09 2000-04-25 Sufix Usa, Inc. Vegetation trimmer head
AU3485300A (en) * 1999-02-22 2000-09-04 John Charles Castleman Rotary blade for trimmers and brush cutters
US6249978B1 (en) 1999-05-12 2001-06-26 Mtd Products, Inc. Flail head for a vegetation cutter

Patent Citations (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3138224A (en) * 1962-04-30 1964-06-23 Andrew J White Brake having means to indicate wear
US3414272A (en) * 1966-03-11 1968-12-03 John B. Rogers Jr. Piston rings
US3929179A (en) * 1973-12-05 1975-12-30 Kennametal Inc Indicator device for indicating tread wear and tire incorporating the indicator
US4300336A (en) * 1979-09-10 1981-11-17 Echo, Incorporated Cutter blade assembly for weed and grass trimmers
US5010650A (en) * 1988-09-02 1991-04-30 Omnimart Distributions Inc. Seam cutter
US5303574A (en) * 1991-02-12 1994-04-19 Hughes Aircraft Company Evaluation of the extent of wear of articles
US5388331A (en) * 1994-01-28 1995-02-14 Doroodian-Shoja Siamak Wear indicator for a disposable razor
US6295733B1 (en) * 1994-08-03 2001-10-02 Warner-Lambert Company Changeable color shaving aid
US5617636A (en) * 1995-06-30 1997-04-08 Taggett; Peter T. Trail blazing stumpcutter
US5894682A (en) * 1997-04-08 1999-04-20 Broz; Joseph S. Shoe with built-in diagnostic indicator of biomechanical compatibility, wear patterns and functional life of shoe, and method of construction thereof
US6119350A (en) * 1997-05-23 2000-09-19 Trim-A-Lawn Corporation Rotary cutting member for lawn trimmers
US6041467A (en) * 1997-07-03 2000-03-28 Gillette Canada Inc. Toothbrush
US6129297A (en) * 1997-07-30 2000-10-10 Martin Marietta Materials, Inc. Cone crusher with wear indicator
US6354008B1 (en) * 1997-09-22 2002-03-12 Sanyo Electric Co., Inc. Sliding member, inner and outer blades of an electric shaver and film-forming method
US6112416A (en) * 1997-12-16 2000-09-05 Bridges; Roy Weed and grass trimmer attachment head
US6499414B2 (en) * 1998-04-15 2002-12-31 Case Corporation Seed metering system with improved wear enhancement
US6513370B1 (en) * 1998-04-17 2003-02-04 Mark Helton Wear indicator for sports balls
US6234796B1 (en) * 1998-06-05 2001-05-22 Vdw Gmbh Dental root canal treatment
US6368189B1 (en) * 1999-03-03 2002-04-09 Mitsubishi Materials Corporation Apparatus and method for chemical-mechanical polishing (CMP) head having direct pneumatic wafer polishing pressure
US6293349B1 (en) * 1999-08-13 2001-09-25 Black & Decker Inc. Edger
US6457566B1 (en) * 2001-02-26 2002-10-01 Brake Parts Inc. Disk brake rotor with visual wear indicator
US6854593B2 (en) * 2002-11-15 2005-02-15 Jean-Marc Boudreau Pad-type idler for conveyor belts

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070180706A1 (en) * 2006-02-03 2007-08-09 Lauro Guerra Rotary head for garden trimmers, of the type comprising pivoted cutter means
US7614153B2 (en) * 2006-02-03 2009-11-10 Lauro Guerra Rotary head for garden trimmers, of the type comprising pivoted cutter means
US20080196255A1 (en) * 2007-02-16 2008-08-21 Gordon Strader Powered weed trimmer cutting head and method
US7878097B2 (en) * 2007-02-16 2011-02-01 Gordon Strader Powered weed trimmer cutting head and method
US20110232109A1 (en) * 2007-02-16 2011-09-29 Gordon Strader Powered weed trimmer cutting head and method
US8640588B2 (en) * 2007-02-16 2014-02-04 Gordon Strader Powered weed trimmer cutting head and method
US20130111863A1 (en) * 2011-11-07 2013-05-09 Kondex Corporation Disc Mower Blades
USD759126S1 (en) 2012-11-07 2016-06-14 Kondex Corporation Disc mower blade
USD767639S1 (en) 2015-04-09 2016-09-27 Kondex Corporation Sugar cane harvester base cutter knife
USD768727S1 (en) 2015-04-09 2016-10-11 Kondex Corporation Corn header chopper knife
US20180220583A1 (en) * 2017-02-08 2018-08-09 Andreas Stihl Ag & Co. Kg Cutter Head for a Brushcutter
US10779466B2 (en) * 2017-02-08 2020-09-22 Andreas Stihl Ag & Co. Kg Cutter head for a brushcutter

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