Having Diverse Cutting Elements Patents (Class 83/832)
  • Patent number: 8869787
    Abstract: A hand-operated implement has a guide bar on which is fitted a cutting chain for cutting mineral and metal materials. The cutting chain is driven around the guide bar by a chain sprocket. The chain sprocket is arranged in a chain sprocket chamber which is delimited by a chain sprocket cover. A cutting element has an outer side facing a sidewall of the chain sprocket cover which lies in a first notional plane. The distance between the sidewall and the first notional plane measured perpendicular to the first notional plane and centrally between the top of the cutting element and the peripheral wall is less than approximately 0.8 cm over at least 30% of the section between a second notional plane containing the central axis of a fixing bolt on the guide bar and the exit opening at which the cutting chain leaves the chain sprocket chamber.
    Type: Grant
    Filed: October 12, 2012
    Date of Patent: October 28, 2014
    Assignee: Andreas Stihl AG & Co. KG
    Inventors: Hannah Thölking, Horst Otterbach, Helmut Zimmermann, Jens Kreutzer, Jonas Lank
  • Publication number: 20140283665
    Abstract: Embodiments provide various components of a chain saw, including saw chain elements, sprockets, and other fixtures, that may facilitate sharpening of cutter links during operation. In various embodiments, the components may increase stability during sharpening, provide nose mounted sharpening fixtures, and/or facilitate the resizing and/or reshaping of a sharpening element.
    Type: Application
    Filed: June 9, 2014
    Publication date: September 25, 2014
    Inventors: Christopher D. Seigneur, Mike Goettel, Michael Patterson
  • Publication number: 20130152760
    Abstract: A saw chain which is reversible having adjacent chain sections each having a pair of cutting links with cutting teeth disposed on opposite sides of the chain having flanged cutting teeth extending over the chain. The cutting edge on the pairs of cutting teeth on adjacent sections are oppositely disposed so that when the chain becomes dulled it can be reversed on the chain saw bar to reverse the chain sections to place sharp teeth in the cutting position and the previously used teeth are in a non-cutting position.
    Type: Application
    Filed: June 18, 2012
    Publication date: June 20, 2013
    Inventor: WYATT CANON
  • Patent number: 8256335
    Abstract: A saw chain which is reversible having adjacent chain sections each having a pair of cutting links with cutting teeth disposed on opposite sides of the chain having flanged cutting teeth extending over the chain. The cutting edge on the pairs of cutting teeth on adjacent sections are oppositely disposed so that when the chain becomes dulled it can be reversed on the chain saw bar to reverse the chain sections to place sharp teeth in the cutting position and the previously used teeth are in a non-cutting position.
    Type: Grant
    Filed: May 19, 2010
    Date of Patent: September 4, 2012
    Inventor: Wyatt Canon
  • Patent number: 8136436
    Abstract: In various embodiments, a saw chain is provided that includes a rail engaging link that has an offset footprint within the link itself and/or with respect to other links in the chain that are adapted to ride on the same rail. Saw chains as provided may be used in a variety of applications, including but not limited to wood cutting and aggregate cutting applications.
    Type: Grant
    Filed: November 14, 2007
    Date of Patent: March 20, 2012
    Assignee: Blount, Inc.
    Inventors: Ian Osborne, Mike Harfst, Christopher Seigneur
  • Patent number: 6408730
    Abstract: A cutting device for tooling sandwich plates has as its cutting tool a cutting chain (5) with cutting elements in the form of chain links (27, 28, 29) and a chain guide as the guide mechanism, wherein the chain links (27, 28, 29), lying one behind the other in their direction of movement (23), can swivel relative to one another on a swivel axis running transverse to their plane of movement and are moved by means of the chain guide in the plane of movement sometimes in a straight line, sometimes in a curve. The chain links (27, 28, 29) also have several cutting teeth (34) lying one behind the other in their direction of movement (23), which project radially on the cutting chain (5) and have cutting edges (335), which run transverse to the plane of movement of the chain links (27, 28, 29), wherein the perpendicular projections of the cutting edges (35) are arranged in the plane of movement at least partially along a line curved radially to the outside.
    Type: Grant
    Filed: July 3, 2000
    Date of Patent: June 25, 2002
    Assignee: Trumpf GmbH & Company
    Inventors: Andreas Tinner, Matthias Accola
  • Patent number: 6334809
    Abstract: For users of chain saws it is known that the chain saw teeth should rather often be sharpened by filing in order to keep them well cutting. Traditionally, such a sharpening is effected by means of a straight filing rod moved in a reciprocal manner, but according to the invention it is realized that it is better to arrange the rod as a rotary circular or screw shaped formation, whereby the teeth can be worked in a simplified manner.
    Type: Grant
    Filed: November 22, 1999
    Date of Patent: January 1, 2002
    Inventor: Kåre Spang
  • Patent number: 6138658
    Abstract: A saw chain for cutting aggregate material has sealing members to seal the pivotal connection between the center drive links and the rivets to prevent entry of contaminates into the bearing surfaces. In one arrangement, O-rings are mounted in grooves of the tie straps with the O-ring being compressively forced against the center drive link. The O-ring prevents entry of contaminants into the bearing surface between the bore of the center drive link and the rivet. In another arrangement spring type cup washers fit in a groove of the tie straps and the cup washers are biased against the center drive link.
    Type: Grant
    Filed: March 12, 1999
    Date of Patent: October 31, 2000
    Assignee: Blount, Inc.
    Inventor: Don A. Bell
  • Patent number: 6128997
    Abstract: A cutting assembly for a motor chainsaw has a guide bar with peripheral guide groove and guide surfaces. A saw chain circulates in the guide groove in a longitudinal direction of the guide bar. The saw chain has chain members such as centrally arranged drive members and connectors, laterally connecting the drive members. Some of the connectors and some of the drive members are embodied as cutters arranged alternatingly on opposite sides of the saw chain. Rivets connect the chain members pivotably to one another and extend transversely to the circulating direction. The drive members engage the guide groove and the connectors are slidably supported on the guide surfaces. Each cutter has a base, a support stay connected to the base, and a cutting tooth connected to the support stay. The cutting tooth has a laterally projecting roof portion having a leading end in the circulating direction with a roof cutting edge.
    Type: Grant
    Filed: April 23, 1999
    Date of Patent: October 10, 2000
    Assignee: Andreas Stihl AG & Co.
    Inventor: Karl Nitschmann
  • Patent number: 6047567
    Abstract: A unitary shear blade (20) for shearing a plurality of spaced apart streams of molten glass into individual gobs, the shear blade having a free end (20a) and an opposed end (20b). The free end is provided with a plurality of side-by-side shearing surfaces (22, 24, 26) each of which has a generally V-shaped machined shearing edge. A plurality of fastener receiving openings (28) extends through the shear blade at locations adjacent the opposed ends thereof to permit the shear blade to be removably secured to a carriage (10) by a plurality of threaded fasteners (12).
    Type: Grant
    Filed: June 9, 1998
    Date of Patent: April 11, 2000
    Assignee: Owens-Brockway Glass Container Inc.
    Inventor: Robin L. Flynn
  • Patent number: 6003423
    Abstract: A saw chain for a chain saw has an identifying code stamped into one of its links for ease of selecting replacement chain. The link with the identifying code is provided with distinguishing characteristics for ease of selecting that link. The stamped code on the link provides the specification of the saw chain required for replacement. The link may have a different shape and/or colored to distinguish that link from other similar links.
    Type: Grant
    Filed: August 26, 1997
    Date of Patent: December 21, 1999
    Assignee: Blount, Inc.
    Inventor: Pascal A. Gerard
  • Patent number: 5988035
    Abstract: A sawing chain for chain saws, having a plurality of chain links which are linked together so as to be mutually pivotable in a common plane of extent and advance (which plane is in the operating plane of the chain) and which links bear cutting elements. To facilitate replacement of damaged individual links, and to simplify the driving and guiding of the chain, the chain links are linked together in succession in a direct intermeshing fashion i.e. not relying on fasteners to mediate the linkage of the successive chain links, along edge surfaces which extend transversely to the common plane of extent and advance (which plane is in the operating plane of the chain), resulting in a chain structure which is resistant to flexure in the direction perpendicular to the plane.
    Type: Grant
    Filed: May 5, 1997
    Date of Patent: November 23, 1999
    Assignee: Hard-Stiftung
    Inventor: Christoph Rossmann
  • Patent number: 5855157
    Abstract: A saw blade preventing "fluff" or "return" of fibers from occurring when used to cut wood or the like object and rendering any finishing work unnecessary is formed with a unique combination of cutting teeth and biting teeth, the biting teeth being disposed, on a cut path mainly by means of the cutting teeth, either on top surface of or in front of each cutting tooth in cutting direction of the saw blade and to have a smaller width than the cutting teeth, for realizing a biting operation by the biting teeth and the cutting operation by the cutting teeth in the same sawing step.
    Type: Grant
    Filed: June 12, 1997
    Date of Patent: January 5, 1999
    Assignee: Matsushita Electric Works, Ltd.
    Inventors: Hidezumi Okamura, Ryuji Ohtani, Isao Fuwa, Noboru Kusano, Masahiro Ikegami, Masao Torigoe, Shoichi Hongo
  • Patent number: 5139064
    Abstract: A saw tooth, of which a number are removably mounted on a tree-felling saw head, includes a body portion having a lead cutter and a trailing primary cutter separated by a throat. The combined lead cutters function to cut a narrow side wall kerf on each side of a larger principal kerf together with corresponding inside corners of the larger kerf. The remainder of the larger kerf is then cut out by the following primary cutters, forming a square cut end. As the cut progresses, the combined primary cutters separate the longitudinal fibers of the tree at the square cut end without double cutting the fibers, thereby improving cutting efficiency and reducing energy requirements in felling a tree.
    Type: Grant
    Filed: March 19, 1991
    Date of Patent: August 18, 1992
    Inventor: M. W. Kenneth Nunweiler
  • Patent number: 4762044
    Abstract: A side cutter tooth includes an element having a tip which extends upwardly substantially parallel to the plane of the body. Improved performance is achieved by designing the inner surface of the cutter tip to reduce "clearance" or to create "interference."A single-element side cutter tooth for scoring only one side of a kerf is also described.
    Type: Grant
    Filed: March 17, 1987
    Date of Patent: August 9, 1988
    Inventor: Gerald C. Kolve
  • Patent number: 4576078
    Abstract: A side cutter tooth 10 or other chain saw tooth includes a tip 36 which extends upwardly substantially parallel to the plane of the body 24 or which is inclined inwardly at an angle of 0.degree.-50.degree. towards the angle of the body 24 to create improved resistance to crimping and breakage of the cutter element 34 of the tooth 10 so that the tooth will not deflect outwardly when exposed to a downward force, such as often experienced during a bind or pitch. Protection of the tooth 10 is also provided by including at least one corrugation 42 in the vincinty of the curl outwardly from the body 24 to reinforce this curl and to further reduce crimping and breakage. That is, the corrugation 42 includes a stamped portion of the link 20 or 22 spanning the intersection of the cutter element 34 with the body 24.
    Type: Grant
    Filed: April 13, 1984
    Date of Patent: March 18, 1986
    Inventor: Gerald C. Kolve
  • Patent number: 4573386
    Abstract: The invention is directed to a saw chain for a power-driven chain saw. The saw chain includes a plurality of cutting links, a plurality of connecting links and a plurality of driving links. The links are interconnected by rivets to define the saw chain. The cutting links include a cutting tooth and a rearward foot defining a tilt edge. The cutting link tilts about the tilt edge when the cutting tooth penetrates the wood to be cut. In tilting about the tilt edge, the cutting edge of the cutting tooth is raised from a first elevation to a second elevation and the difference between these elevations is the tilt displacement. The tilt edge lies in a vertical plane which is perpendicular to a traverse plane containing the axes defined by the forward and rearward openings for the linkage rivets connecting the cutting link to the rest of the saw chain.
    Type: Grant
    Filed: July 1, 1983
    Date of Patent: March 4, 1986
    Assignee: Andreas Stihl
    Inventors: Bernd Lindemann, Gotz Landwehr, Hans-Georg Kaiser
  • Patent number: 4524519
    Abstract: A flexible saw is disclosed, including a plurality of toothed cutting links forming a continuous loop wherein the cutting links are arranged in two side-by-side rows with the cutting links in a staggered relationship. The links of each row each have opposite ends, respectively, aligned with the opposite ends of a pair of adjacent links of the other row. Rivets pivotally connect the aligned ends of the cutting links directly to each other. The flexible loop is mounted on a guide bar. The cutting links of each row each have a cutting tooth which extends away from the links of the other row. A safety bar is located between the teeth of the two rows of links to provide protection against accidental cutting.
    Type: Grant
    Filed: March 19, 1984
    Date of Patent: June 25, 1985
    Inventor: Anthony A. Muehling
  • Patent number: 4414876
    Abstract: The invention concerns a chain saw for a tree cutting device.This chain is composed of cutting links (2) having two cutting teeth (6) located on either side of the longitudinal axis of the chain, one of the teeth being basically in the plane of the chain and the other tooth being displaced with respect to the plane of the chain, and the cutting links being so placed that the chain presents, on either side of its longitudinal axis, successively, a tooth displaced on one side of its plane, a tooth in its plane, a tooth displaced on the other side of its plane, a tooth in its plane, and so forth.
    Type: Grant
    Filed: March 9, 1981
    Date of Patent: November 15, 1983
    Assignee: Association pour la Rationalisation et la Mecanisation de l'Exploitation Forestiere
    Inventor: Jean Loigerot
  • Patent number: 4344229
    Abstract: This invention pertains to apparatus for trimming branches of trees and particularly branches high above the ground, without a pole saw, climbing the tree or using a ladder. The apparatus include spaced cutting links with sharp teeth at one end fastened upon a flexible chain. Each end of the chain is connected to a length of rope. A metal weight, sand bag, etc. attached to one of the ropes carries the flexible chain into position over the branch desired to be cut. A counter weight is also provided on one end of the flexible chain to automatically position the cutting side of the spaced cutting links in a downward facing, cutting position as the chain is pulled up onto and over the branch.
    Type: Grant
    Filed: February 6, 1980
    Date of Patent: August 17, 1982
    Inventor: Robert M. Johnson
  • Patent number: 4309931
    Abstract: A power driven saw is provided with an endless array of planar cutting members hingedly interconnected to form an articulated saw blade. The cutting members are disposed about the periphery of an elongated saw blade support structure to present a circumferential band of cutting teeth.
    Type: Grant
    Filed: July 23, 1979
    Date of Patent: January 12, 1982
    Inventor: Carl J. Alexander
  • Patent number: 4218820
    Abstract: There is disclosed a reciprocating chain saw made up of a length of chain formed by a plurality of serially pivotally connected cutters, a number of which cut when the chain is moved in one direction, and a number of which cut when the chain is moved in the other direction. In one use of the chain saw, it is adapted to be connected at its opposite ends to the two branches of a rope or the like, one end of which may be thrown up and around the limb of the tree which is to be cut. The cutting means disclosed are generally similar to those of conventional motor driven chain saws with the exception that no sprocket means need be provided on the chain. In one of the disclosed embodiments of the chain saw of the invention, the chain is so constructed that it can bend or flex in only one direction, so that the disposition of the chain, in the correct position upon a limb to be cut is assured.
    Type: Grant
    Filed: March 27, 1979
    Date of Patent: August 26, 1980
    Inventor: William Cleva
  • Patent number: 3979843
    Abstract: A trenching chain arranged with links and pivot pins and with scoop members staggered laterally of the longitudinal direction of the chain and therealong. The scoop members have cup-shaped or curved scoop surfaces which are generally faced in the direction of movement of the chain for scooping earth or the like from the trench. Also, tooth picks or bars are mounted on the chain adjacent the scoop members and extend near the scoop surfaces and are articulated on the chain in a manner different from the movement or articulation of the scoop members themselves, and thus the picks clear the scoop members of dirt or the like when the chain is articulated or moved around a sprocket or the like.
    Type: Grant
    Filed: November 26, 1975
    Date of Patent: September 14, 1976
    Assignee: J. I. Case Company
    Inventor: Roland Nielsen Nissen