Did You Know...
...that the Slinky toy was the result of a failed attempt by engineer Richard James to produce an antivibration device for ship instruments? His goal was to develop a spring that would instantaneously counterbalance the wave motion that rocks a ship at sea. Instead, he developed the Slinky.
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| Number | Title | Issue Date |
| 8099937 | Replaceable edge for cutting blades A cutting blade apparatus includes a blade and a replaceable cutting edge component that is removably engageable with the blade. The cutting blade apparatus may be used in a variety of cutting applications, and in some embodiments may be useful in rotary lawn mower ... | 01/24/2012 |
| 7841159 | Rotary mower blade integrating aerodynamic elements An embodiment of an overall approximately rectangular rotary mower blade, affixed to a powered support shaft, where the support shaft rotates the blade tines on a rotational plane parallel to the vegetation to be cut, where the blade employs aerodynamic tines preced... | 11/30/2010 |
| 7703268 | Rotary cutter bar mechanism and blade pin coupling A rotary mowing implement including a rotary cutter bar disk, at least one hub, a blade element, a pin, and a pin retaining mechanism. The at least one hub is connected to the rotary cutter bar disk. The blade element has a hole therein. The pin couples the blade el... | 04/27/2010 |
| 7647758 | Device for reducing debris accumulation in a rotary cutterhead A scraper device for connection to the knife connector in a rotary cutterhead and for rotation therewith that prevents debris from accumulating in the space between the knife and the cutterhead housing and which also dislodges accumulated debris from areas adjacent ... | 01/19/2010 |
| 7617664 | Rotary cutting blade assembly An improved rotary cutting blade assembly which is characterized by reduced friction and enhanced cutting efficiency is disclosed. The improved rotary cutting blade includes a rotary cutting blade having a blade hub, a plurality of blade arms extending outwardly fro... | 11/17/2009 |
| 7392643 | Mulching system for a lawn mower A lawn mower having upper and lower cutter blades in a cutter housing is provided. The blades are disposed with a phase difference such that upper blade edge parts of the upper cutter blade are advanced forward with respect to lower blade edges of the lower cutter b... | 07/01/2008 |
| 7325755 | Rotary tool for spreading particulate materials and method of using the same The rotary tool for spreading particulate materials from a mound of the same. The tool has an elongated shaft with a rotatable body mounted proximate a first end thereof. The body has a peripheral edge with a plurality of flexible fingers radiating outwardly therefr... | 02/05/2008 |
| 7308900 | Flat surface washing apparatus An engine and high pressure pump are mounted onto a wheeled chassis. High pressure water is distributed to a rotating wand and nozzle assembly on the wheeled chassis so that as the chassis is moved along a linear path, high pressure water is sprayed onto an underlyi... | 12/18/2007 |
| 7305813 | Lawn mower A lawn mower having a cutter housing for receiving a cutter blade for cutting grass. To make the manufacture of molds easy, the cutter housing is divided into three members: a housing proper for receiving the cutter blade, a bottom member for forming a cut grass car... | 12/11/2007 |
| 7299727 | Liquid transport cavity saw blade A saw blade has a saw body and a cutting edge for cutting during movement of the saw blade. A lubricating guide support has a bearing surface disposed immediately adjacent the saw body for proper alignment of the saw blade during cutting. The guide support contains ... | 11/27/2007 |
| 7299613 | Mulching mower unit A mulching mower unit comprising a mower deck having a top plate, and a plurality of rotary blades arranged side by side inside the mower deck. A mulching baffle for providing at least part of boundary walls of a plurality of mulching chambers is detachably attached... | 11/27/2007 |
| 7299612 | Rotary mower blade A rotary motor blade has rotational mounting structure in its body member to mount the blade to a power driven motor and thereby rotate the blade. The body member includes at least one free end extending outwardly of the mounting structure with the free end having a... | 11/27/2007 |
| 7290341 | Beveled edge thin cutting knife A knife is disclosed for cutting crop materials, and includes a base portion having an interior edge and a pair of end edges. The base portion has an exterior region opposite the interior edge and has opposite major faces. The knife further includes a plurality of t... | 11/06/2007 |
| 7290383 | Trimmer blade A trimmer blade assembly comprising a blade within a housing is provided. The housing includes a wall for propelling cut vegetation away from the blade assembly. The blade assembly may also include a ridge on the housing for further propulsion of cut vegetation away... | 11/06/2007 |
| 7270041 | Paper cutting and trimming apparatus with replaceable, horizontally-oriented, decorative-edged cutting shears A device for cutting flat substances, such as paper, photographs and cardboard, adapted to provide a variety of decorative edged cuts. The cutting edges of the invention are arranged horizontally to enhance not only the quality and continuity of the decorative cuts,... | 09/18/2007 |
| 7257898 | Cutting head for string trimmer A cutting head for a string trimmer is provided which accommodates any string gauge thickness and may be easily and quickly re-threaded upon failure of a string previously disposed therein. The cutting head has spring-biased clamping members which are each mounted w... | 08/21/2007 |
| 7246669 | Sod cutting device A sod cutting device containing aspects of the present invention contains an angled blade having a vertical cutting edge and a horizontal cutting edge. The angled blade is secured to a body member that in turn is movably affixed to a vehicle. Such a device may be us... | 07/24/2007 |
| 7240474 | Power assist rear discharge mower deck A rear discharge mower deck has at least two cutting blades mounted on vertical spindles in cutting chambers, a fan in a housing mounted on the deck over the cutting chambers, and an inlet opening between the cutting chambers and the fan housing. The surface area of... | 07/10/2007 |
| 7240597 | Circular saw having wiper tips A circular saw including an annular disk-shaped base adapted to be driven about an axis of rotation, a plurality of tip supports formed along the outer circumference of the base integrally therewith so that a gullet is defined between adjacent ones of the tip suppor... | 07/10/2007 |
| 7225713 | Cutting blade for a motor-driven, manually-guided implement A cutting blade for a motor-driven implement is provided. The cutting blade has a main body having a central fastening opening and blade sections that extend approximately radially from the main body. The blade sections have edges that extend in a radial direction a... | 06/05/2007 |
| 7200982 | Blade slippage apparatus The present invention provides a slippage apparatus adapted for use with a vegetation cutting device including a blade and a prime mover having an output shaft. The slippage apparatus includes an adapter rotatable with the blade. The adapter also includes a bore def... | 04/10/2007 |
| 7181897 | Rotary mower A cutting device including a gearbox of an upper part, a lower part, and a front piece, the front piece having a thickness greater than the thickness of the upper part. At least one guide bearing is connected to the gearbox by assembly elements. At least one cutting... | 02/27/2007 |
| 7174673 | Jack-shaft operator assembly having connecting plate secured by a coupler to a drive member A shaft operator assembly for moving a door assembly which includes a movable door leaf and a door shaft attached to the door leaf for common movement together. A shaft connecting unit includes a shaft connecting element and a connecting plate element and connects a... | 02/13/2007 |
| 7171798 | Rotary shredding blade A brush cutter blade for shredding of grasses, weeds, vines and brush and also for saw cutting of saplings and tree branches, comprising a circular saw blade member with auxiliary cutting elements projecting from the underside of the blade. Several preferred embodim... | 02/06/2007 |
| 7155889 | Modularized lawnmower replacement blade A modularized lawnmower replacement blade which can be can be attached to a standard lawnmower shaft. The modularized blade includes a central mounting hub with four recessed seats. In the preferred embodiment, a cutting blade is attached to each recessed seat so th... | 01/02/2007 |
| 7146791 | Interchangeable mulching/discharge mowing deck A convertible mower deck having a mulching mode and a discharge mode. The deck is convertible from the mulching mode to the discharge mode by removal of an insert that extends along the rear of the cutting chamber walls of the deck. ... | 12/12/2006 |
| 7127877 | Universal mower blade A mower blade includes a mid-section, two sharpened, end sections, and a blade longitudinal axis. The mid-section includes a circular, central hole having a relatively large diameter and being centered on the blade longitudinal axis and first and second slots center... | 10/31/2006 |
| 7124566 | Cutting device, particularly a lawn mower A cutting device, particularly a lawn mower, has at least one rotating knife mounted on a rotating, motor-driven knife carrier by a screwless, detachable connection. This connection is detachable by a relative rotation between the knife and the knife carrier. It is ... | 10/24/2006 |
| 7111403 | Head for line trimming apparatus A head for a line trimming apparatus includes a body member and a detachable cover that may include a replaceable insert for connecting the head to a drive shaft of a line trimming apparatus. The body member includes opposed openings and a filament-receiving channel... | 09/26/2006 |
| 7069712 | Mower deck with blower A mower deck includes a blower to lift blades of grass or vegetation for cutting. The blower may be mounted above and to the rear of the mower deck, and may rotate on a vertical axis spaced from the axes of the cutter blades. A passage or duct extends from the cutti... | 07/04/2006 |
| 7065946 | Lawnmower having mulching cutter deck assembly A mulching assembly for a mower deck that has one or more cutting chambers includes a channeling plate in each cutting chamber. The channeling plate is configured to optimize air and clipping flow through the cutting chamber for mulching and dispersal of the clippin... | 06/27/2006 |
| 7062898 | Mower attachment mechanism A mower attachment comprising an attachment housing and a plurality of blade assemblies. The attachment housing includes an upper surface and front and rear baffles extending downwardly from the upper surface, the front and rear baffles shaped to define a plurality ... | 06/20/2006 |
| 7059106 | Adjustable spindle assembly for a grass trimmer An adjustable spindle assembly is described and includes a spindle housing, a grooved spindle shaft rotatably connected to the spindle housing, a pulley connected to one end of the grooved spindle shaft, a mow ball rotatably connected to a second end of the grooved ... | 06/13/2006 |
| 7024847 | Mower deck A mower deck includes a cutting chamber, at least one blade mounted cutting chamber and at least one deflector mounted in the cutting chamber. The at least one deflector is semi-permeable to clippings circulating in the cutting chamber. ... | 04/11/2006 |
| 6978590 | Lawn mower blade improvement A lawn mower blade assembly is described that comprising a generally flat, elongated blade having a central mounting opening for mounting of the blade to a rotating motor shaft of a lawn mower. The blade further includes a plurality of bit openings positioned along ... | 12/27/2005 |
| 6978532 | Mower bed blade method A method of forming a durable mower bed blade is provided in which the grain of the metal is perpendicular to the longitudinal axis of the blade. The blade is formed in part by coining the blade on a hydraulic press which strengthens the cutting edge and other areas... | 12/27/2005 |
| 6959530 | Pivotal knife mounting arrangement An improved mounting arrangement for a knife to a disc for use on a rotary disc cutter that eliminates the need for a threaded connector and the associated nut is disclosed. It also provides a positive retention method on the top side of the disc. In addition, it pr... | 11/01/2005 |
| 6951094 | Mower with mulching function A mower with a blade housing, in which a blade rotates about a vertical rotational axis in a rotational plane, so that for movement of the mower in the mowing direction, the cutting material is cut corresponding to the diameter of the blade. The front region of the ... | 10/04/2005 |
| 6938402 | Mowing blades having an impact energy absorbing structure Mowing blades which include a one-piece member having a drive mechanism coupling section, a deformation section and a cutting section. When the mowing blades receive a particular load from an obstructing object, the deformation section deforms, dissipates energy and... | 09/06/2005 |
| 6935095 | Rotary lawnmower blade with reversible replaceable blades Attachable to a rotary lawnmower shaft is a body assembly of a rectangular shape having a removable and reversible blade on each end. The blades are easily and quickly removed, reversed, and replaced without tools. The blades are locked in position by a unique and s... | 08/30/2005 |
