Lawn Edgers Patents (Class 30/DIG5)
  • Patent number: 6092608
    Abstract: An attachment for a rotary garden tiller having edging capability for establishing perimeter of a flower bed alongside sidewalks, driveways, or fence lines which functions by cutting and separating grass from its roots at a uniform depth and width and in a controllable contoured line. The edger apparatus includes a cupped cultivation disc and a pulverizer wheel which includes chopping and digging capability. The cultivating disc shears vegetation and cultivates the soil in any contoured shape and maintains a fixed depth of three to four inches, requiring approximately one third of the time spent in edging required by other methods.
    Type: Grant
    Filed: November 4, 1998
    Date of Patent: July 25, 2000
    Inventor: Herbert J. Leger
  • Patent number: 6062318
    Abstract: The present invention is a blade which is designed and configured to be utilized with conventional edging devices. The blade of the present invention is substantially U-shaped and includes a top planar wall having opposite ends. Extending outward from each end is a rectangular shaped end portion. When in use, the outer walls of the end portions will contact the ground. This will offer the user a device which is versatile and powerful. For protecting the user, a cover is provided.
    Type: Grant
    Filed: September 27, 1997
    Date of Patent: May 16, 2000
    Inventor: David C. Andrews
  • Patent number: 5924205
    Abstract: A protection cover for a trimmer is disclosed. The protection cover includes a protection portion that is comprised of plural elastic members. The protection portion prevent chips such as grasses trimmed or small stones inside of the cover. Each of the elastic members is shaped to a strip in an embodiment. The protection cover also includes a member of adjusting a vertical position of the protection portion.
    Type: Grant
    Filed: July 24, 1997
    Date of Patent: July 20, 1999
    Assignee: Diatop Corporation
    Inventors: Tomohito Sugihara, Hajime Tomita
  • Patent number: 5924494
    Abstract: A vertical drive shaft lawn edger has an arbor which allows the cutting blade to extend outwardly from the lawn edger, yet still be rigid and stable. The arbor is located at an angle .alpha. with respect to a longitudinal axis running perpendicular to the rear axle and lying within the same plane. The angle .alpha. is preferably 5.degree. or less. The arbor is mounted to a frame of the lawn edger by a bracket and screws. A pivoting assembly enables the arbor to pivot thereby increasing or decreasing the angle .alpha..
    Type: Grant
    Filed: December 31, 1997
    Date of Patent: July 20, 1999
    Assignee: MTD Products Inc
    Inventor: David M Martinez
  • Patent number: 5833009
    Abstract: The lawn edger is made up of a number of interconnected flat plates. One plate lies horizontally in use and has a forward cutting edge. A second plate is vertical in use and depends downwardly from one side edge of the horizontal plate. A third plate lies beside the horizontal plate and is disposed at an oblique angle to the vertical plate. That plate has a forward cutting edge. A fourth plate lies adjacent to the rear of the edger. The angle of that plate is such that it directs material which collects on the horizontal plate to move to the side thereof opposite the lateral plate. An electric motor having an eccentric cam bay be mounted on the edger for causing the edger to vibrate or to reciprocate.
    Type: Grant
    Filed: April 17, 1997
    Date of Patent: November 10, 1998
    Inventor: Walter Rebot
  • Patent number: 5819856
    Abstract: A lawn edging tool comprises a first post which is hollow and having an open lower end to which a cutting blade is secured. A second post is fitted through the open lower end of and slideably held in the hollow first post The second post has a lower end provided with a ground plate below the first post. A spring is trapped between the upper end of the second post and a spring stop provided within the first post. This spring is compressed by pushing the first post downwardly over the second post with the ground plate in a ground engaging position to move the cutting blade on the first post downwardly from a storage to a cutting position. The spring, after being compressed, then provides a bias to raise the first post relative to the second post and to return the cutting blade to the storage position.
    Type: Grant
    Filed: May 22, 1997
    Date of Patent: October 13, 1998
    Inventor: George Meyer
  • Patent number: 5815928
    Abstract: A trimmer (10) has a power source (12) and a tabular drive shaft housing (32) for coupling the power source (12) to a rotating working element. The drive shaft housing (32) is rotatable with respect to the power source (12) and a handle (26) which is fixed to the power source, such that rotation of the drive shaft (32) allows the plane of the working element to be re-oriented. Rotation of the drive shaft housing is fixed by a coupling latch (38) disposed within the handle. An external trigger (46) located on the handle is provided for manually decoupling the coupling latch for allowing rotation of the handle.
    Type: Grant
    Filed: July 28, 1995
    Date of Patent: October 6, 1998
    Assignee: WCI Outdoor Products, Inc.
    Inventor: Robert T. Cline
  • Patent number: 5609213
    Abstract: A sod cutter and trencher which includes a pair of handle members with a roller at the lower end thereof and a cutter blade fixed behind the roller and extending downwardly therebelow into ground engaging trenching position and also includes a kick-bar for engagement by the operator's foot for applying downward and forward force for producing the desired trenching action.
    Type: Grant
    Filed: September 22, 1995
    Date of Patent: March 11, 1997
    Inventor: Robert C. Anderson
  • Patent number: 5592992
    Abstract: A blade assembly for a lawn edging machine. The blade assembly includes a hub, at least two spaced-apart blade members having two or more blade arms extending radially therefrom, and a horizontal blade member connecting the two blade members at their radially extended arm ends.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: January 14, 1997
    Inventor: Timothy J. Thompson
  • Patent number: 5524349
    Abstract: A protective shield for a grass and weed trimmer which prohibits grass and weed clippings and other debris from reaching the operator. The shield is characterized by a clamping member for securing the shield to the trimmer, a supporting member attached to the clamping member, and a protective skirt for shielding the operator. The clamping member includes a two C-shaped members, coupled together at one end by a hinge, which fit around the shaft of the lawn trimmer. The support member includes a first and a second rod which extend perpendicularly from the clamping member such that the longitudinal axes of the rods are aligned when the clamping member is closed around the shaft of the trimmer. The protective skirt is generally rectangular in shape and includes a top side having two rectangular extensions on either side of a U-shaped cutout. A tubular sleeve is provided at the top end of each of the rectangular extensions to receive a respective one of the rods.
    Type: Grant
    Filed: January 27, 1995
    Date of Patent: June 11, 1996
    Inventor: Earl S. Dolin
  • Patent number: 5441115
    Abstract: A bevelled edger blade has a base side attachable centrally to a conventional edger shaft. Ends of the base side having cutting edges are extended an equal distance in opposite directions from a blade axis at a central attachment orifice on the base side to vertical corners. An axial corner is positioned a select distance horizontally from the blade axis. Sloped edges of border channels of landscape areas are cut by cutting edges on angular sides intermediate the axial corner and the vertical corners on the three-sided edger blade as it is rotated by the conventional edger shaft. The angular sides can be straight for cutting straight slopes or arcuate for cutting arcuate slopes optionally. A blade brace can be positioned parallel to the base side between the angular sides. The vertical corners can be angled acutely for cutting landscape channels with acute angles between a straight surface and an opposite side.
    Type: Grant
    Filed: July 8, 1993
    Date of Patent: August 15, 1995
    Inventor: John J. Horzepa
  • Patent number: 5379846
    Abstract: An electrically-powered appliance, such as a line-type grass trimmer, lawn edger, snowthrower, or the like, includes a housing, an elongated hollow tubular handle, an elongated electrical cable extending through and within the tubular handle, and an attachment arrangement for attaching the tubular handle to the housing. The housing includes an attachment portion and a removable portion, preferably of a common "clamshell" configuration, with fasteners extending through openings in these housing portions for fastening them to one another with the tubular handle securely clamped therebetween. Such tubular handle has openings extending laterally therethrough which correspond to the openings through the attachment and removable housing portions. The housing openings and the handle openings are laterally aligned with one another during assembly in order to ensure proper alignment and positioning of the handle when the housing portions are fastened to one another with the handle clamped therebetween.
    Type: Grant
    Filed: January 7, 1993
    Date of Patent: January 10, 1995
    Assignee: Black & Decker Inc.
    Inventors: Robert P. Wagster, Vernon R. Lacher, John S. Vantran
  • Patent number: 5348102
    Abstract: A lawn edger generates a forced air stream which is divided into two separate air paths, one path discharging a first forced air stream behind a cutting blade of the edger to direct clippings generated by the cutter blade away from the edger and the underlying surface and a second path in which a second forced air stream is discharged in front of the cutter blade to clear the surface over which the edger is moved of debris. In an alternate embodiment, exhaust gasses from the drive motor are directed by a conduit into the two separate air paths.
    Type: Grant
    Filed: May 10, 1993
    Date of Patent: September 20, 1994
    Inventor: Henry C. Roberson
  • Patent number: 5183120
    Abstract: With a view to accelerating growth of lawn in the fairway of golf course, or other lawn-covered ground, there is provided a lawn cutting apparatus which forms incised grooves of a predetermined depth in the lawn-covered grown surface by rotating of the cutting blade. Using this cutting blade, contact-resistance between the cutting blade and the inner faces of the incised grooves can be made as low as possible at the time of forming the incised grooves, and the incised part of the lawn covered ground can be finished with good outer appearance.
    Type: Grant
    Filed: September 20, 1991
    Date of Patent: February 2, 1993
    Assignee: Y.M. Golf Course Equipment Co., Ltd.
    Inventor: Hayataro Watanabe
  • Patent number: 5115870
    Abstract: A flexible flail trimmer for conventional trimming of grass, weeds and the like and for edging of sidewalks has a combined guide and guard rotatably mounted inboard of the trimmer cutting head. The guide and guard provides dynamic trimmer indexing on a sidewalk edge for guiding the trimmer vertically and horizontally to deliver a uniform, aesthetically pleasing turf edge. The combined guide and guard does not inhibit trimming of grass and weeds in the conventional trimming manner, and actually enhances the user's visualization and performance of such trimming.
    Type: Grant
    Filed: December 31, 1990
    Date of Patent: May 26, 1992
    Inventor: Steven E. Byrne
  • Patent number: 5077898
    Abstract: A shield and structure for mounting the shield to a hand held grass trimmer is provided. The generally flat shield is perpendicularly mounted to a gear box extension which is carried coaxial with the drive shaft tube. Twisting and moment forces incurred by the shield when the trimmer is resting on the ground are reduced by mounting the shield to support the weight of the trimmer generally perpendicular to the length of the drive shaft tube. The mounting structure prevents sliding of the shield on the drive tube and provides multiple attaching members to prevent rotation of the shield on the drive tube.
    Type: Grant
    Filed: July 25, 1990
    Date of Patent: January 7, 1992
    Assignee: Deere & Company
    Inventor: James J. Hartwig
  • Patent number: 5036648
    Abstract: The invention relates to a cutterhead for vegetation cutter apparatus and has as its object to configure the cutterhead so that the cutterhead as a unit can be built so as to be overall constructively small and reduce wear. The cutterhead controls the spool having the filament with the aid of a latching lever. To achieve an overall construction which is small and subjected to less wear, the invention provides at least one pivot lug fixedly mounted on the housing having its latching lever arranged in an annular space lying concentric to the rotational axis between the hub of the cutterhead and the switching cams corresponding to the filament spool. These switching cams lie in the outer radial region of the spool.
    Type: Grant
    Filed: May 10, 1990
    Date of Patent: August 6, 1991
    Assignee: Andreas Stihl
    Inventors: Joachim Hoffmann, Dieter Angstenberger, Joachim Kottke
  • Patent number: 4894916
    Abstract: The invention comprises an improved adjustable stabilizer wheel which can be easily attached to a weed trimmer to reduce the weight of the trimming device while one is operating the trimmer or detached from the weed trimmer for storage.
    Type: Grant
    Filed: April 14, 1988
    Date of Patent: January 23, 1990
    Inventors: Harold Nimz, P. Jack Morales
  • Patent number: 4825548
    Abstract: A vibration-damping control handle connectble to the shaft portion of a portable power tool, such as a flexible line trimmer or the like, has an elongated, generally tubular vibration isolation section which coaxially circumscribes the shaft. A first end portion of the vibration isolation section is clmaped to the shaft so that the balance of the section is cantilevered relative to the shaft and defines therewith an annular clearance space. The inner end of a handgrip connecting section is secured to a second end portion of the vibration isolation section, the connecting section projecting laterally outwardly from the vibration isolation section and having an operator handgrip secured to its outer end. During operation of the tool, transverse shaft vibration is absorbed by the vibration isolation section to thereby isolate the handgrip from a substantial portion of such vibration.
    Type: Grant
    Filed: March 31, 1987
    Date of Patent: May 2, 1989
    Assignee: White Consolidated Industries, Inc.
    Inventor: Bernard M. Driggers
  • Patent number: 4739556
    Abstract: The swivel joint of the shears comprises a dish-like rotary head 14 which is moulded from plastic and which is inserted with an inner bush 46 into a swivel joint bush 44 of an extension provided with the fixed upper grip 10. The axial fixing is via a detent means 54, 56.On the rotary head 40 the lower blade 50 is fixedly disposed and the upper blade 68 is pivotal on a bearing bush 58 of the rotary head. A pull rod 78 led through the bush 46 is anchored with a bent end to the movable upper blade laterally of the pivot axis thereof. The other end is anchored in an adjustment bush 82 which is adjustably fixed in an adjustment pin 84. The locking is by a plastic slide 24 which is disposed at the front end of the upper grip and can easily be displaced with the thumb to lock or unlock the lower grip or movable blade.
    Type: Grant
    Filed: September 5, 1986
    Date of Patent: April 26, 1988
    Assignee: Wolf-Gerate GmbH
    Inventor: Gebhard Orthey
  • Patent number: 4707921
    Abstract: An extension handle facilitating use of a handheld electrically driven grass shear from an upright standing position that removably attaches to the hand grippable portion of the grass shear by depending pairs of opposed, resilient, inwardly biased clamps. A flexible strip extends through the extension handle for remote control of the grass shear on/off controls from the hand gripped section of the extension handle. The flexible strip includes a depending cam for laterally moving an on/off slide lock switch. Inwardly directed guide posts within the extension handle direct movement of the flexible strip substantially in the direction necessary to actuate the controls on the grass shear.
    Type: Grant
    Filed: August 4, 1986
    Date of Patent: November 24, 1987
    Assignee: Marvin Glass & Associates
    Inventors: Burton C. Meyer, Fritz Fauser
  • Patent number: 4437523
    Abstract: A device for edging lawns around concrete walkways, driveways, etc. The device includes a handle and a blade for being forced between the lawn and the walkway. The blade is specially formed so that the cutting edge thereof will be forced against the walkway as it is forced downward and rotated through the lawn whereby the device is self-sharpening as it is used.
    Type: Grant
    Filed: March 30, 1982
    Date of Patent: March 20, 1984
    Inventor: Joe A. Isbell
  • Patent number: 4351395
    Abstract: A one-piece sidewalk edger and lawn trimmer is disclosed. The one-piece edger-trimmer may be attached to a hoe by removable clamping means. The combined edger-trimmer-hoe allows control of the depth of the groove which is made in the ground during the operation of the implement without the need for making a separate adjustment of the implement. The hoe portion scrapes the upper surface of the sidewalk and collects the cuttings which fall upon the sidewalk. A one-piece edger-trimmer-hoe is also disclosed.
    Type: Grant
    Filed: September 3, 1980
    Date of Patent: September 28, 1982
    Inventor: George S. Lilley
  • Patent number: 4052791
    Abstract: A hand and foot-operated lawn edge trimming tool includes a pair of platform sections each having a flat base and an attachment flange depending therefrom, and a flat blade clamped by fastening means between the attachment flanges and extending downwardly therebeneath, the clamped-together sections forming a platform having a ribbed foot-receiving upper surface terminating at the front end thereof in an upstanding toe-retaining wall. Stiffening ribs extend laterally outwardly from the attachment flange and cooperate to define recesses for the fastening means, one of the ribs receiving therethrough a transversely extending bolt for pivotally coupling a pair of handle brackets to the platform adjacent to the front end thereof, the handle brackets being secured to an upstanding handle and cooperating to bridge the foot of a user standing on the platform. The upper edge of the blade extends rearwardly beyond the rear end of the platform.
    Type: Grant
    Filed: September 23, 1976
    Date of Patent: October 11, 1977
    Assignee: Ansan Tool and Manufacturing Co., Inc.
    Inventor: Mario Anesi
  • Patent number: 4023332
    Abstract: Power grass shears detachably attached to a handle: the handle includes a rod extending in the cutting plane; a connection between the shears and the rod to enable the shears to be rotated around the rod; the connection comprises various arrangements of a pin, and detent like means for enabling the shears to be held at various rotative positions.
    Type: Grant
    Filed: August 8, 1975
    Date of Patent: May 17, 1977
    Assignee: Wolf-Gerate GmbH
    Inventors: Dieter Achenbach, Siegfried Joswig, Walter Kolb
  • Patent number: RE34815
    Abstract: A flexible flail trimmer for conventional trimming of grass, weeds and the like and for edging of sidewalks has a combined guide and guard rotatably mounted inboard of the trimmer cutting head. The guide and guard provides dynamic trimmer indexing on a sidewalk edge for guiding the trimmer vertically and horizontally to deliver a uniform, aesthetically pleasing turf edge. The combined guide and guard does not inhibit trimming of grass and weeds in the conventional trimming manner, and actually enhances the user's visualization and performance of such trimming.
    Type: Grant
    Filed: December 22, 1992
    Date of Patent: January 3, 1995
    Inventor: Steven E. Byrne