| Patent Number |
Title Of Patent |
Date Issued |
| D252130 |
Power driven lawn trimmer |
June 19, 1979 |
|
| 6155940 |
Adjustable cam weights for torque converter |
December 5, 2000 |
| A torque converter assembly is provided for adjusting the overall speed of a vehicle. The assembly comprises a driver pulley including an outer drum, a movable flange, a chamber formed by the outer drum and movable flange, a first weight and a second weight each positioned to lie within |
| 6006434 |
Quick-release component connector for lawn tool |
December 28, 1999 |
| A lawn tool is provided having a drive assembly, a plurality of driven assemblies, and a connector that permits removal of a given driven assemblies from the drive assembly. The drive assembly includes a motor, a first tube, and a first shaft coupled to the motor and positioned to lie |
| 5647810 |
Drive arm-engaging roller for centrifugal clutch |
July 15, 1997 |
| A centrifugal actuator is provided for a centrifugal clutch having an axially fixed base and an axially movable pulley flange. The actuator includes a drive arm having a camming surface and a bottom that is pivotably attached to the movable pulley flange, a mounting pin coupled to th |
| 5597060 |
Centrifugal actuator for centrifugal clutch |
January 28, 1997 |
| A centrifugal actuator is provided for a centrifugal clutch. The centrifugal clutch includes a drive spider having a cam lever-following roller and a moveable clutch housing. The centrifugal actuator includes two bosses, each boss having a mechanism for coupling to the clutch housing |
| 5437356 |
Centrifugal clutch |
August 1, 1995 |
| A centrifugal clutch includes a pair of clutch shoes, a rotor, and a housing around the clutch shoe and rotor. Each clutch shoe is formed to include pockets that receive drive arms on the rotors. The shape of the pocket on the top side of the clutch shoe is different than the shape of |
| 5427217 |
Steering clutch brake assembly |
June 27, 1995 |
| A self-contained steering, clutch, and brake assembly is provided having a housing for connection to a rotating drive shaft having a drive hub mounted on an extension thereof, a brake hub mounted to the housing, and a clutch drum movable to engage either the drive hub or the brake hub. T |
| 5419421 |
Quiet-running centrifugal clutch |
May 30, 1995 |
| A centrifugal clutch includes a pair of clutch shoes and a rotor. The rotor includes rotor arms extending into pockets formed in the clutch shoes. Sound-deadening buffer members are positioned in the pockets to lie between each rotor arm and clutch shoe to deaden sound produced by mo |
| 5411122 |
Cone ramp clutch |
May 2, 1995 |
| A cone-type clutch is provided having a cone-shaped housing coupled to a drive shaft for engaging a cone-shaped friction cone coupled to a driven shaft to establish a driving connection between the shafts. The clutch is activated by rotating two actuating levers relative to each other to |
| 5377774 |
Variable speed drive system |
January 3, 1995 |
| A variable speed drive system for use with a self-propelled device is coupled by a belt to an engine which is mounted to the device. The variable speed drive system includes a variable pitch pulley held in spaced-apart relation to the drive shaft by a fixture and rotates about the dr |
| 5246403 |
Pivoting belt tensioning device |
September 21, 1993 |
| A belt tensioning assembly that simultaneously controls belt tension and belt drive speed is provided. A pivotable bracket is pivotably attached to a lawn mower or other light duty, belt driven equipment. A variable speed pulley for holding a pair of rotatable belts is attached to a slid |
| 5048616 |
Garden tiller tine assembly |
September 17, 1991 |
| A garden tiller tine assembly for use with a tiller assembly which includes a drive shaft having a longitudinal axis of rotation includes a rotary blade aligned at a predetermined angle with respect to the axis of rotation. The planar body of the rotary blade is angled at a dihedral |
| 4633978 |
Brake caliper includes mechanical actuator with camming device and manual wear compensator |
January 6, 1987 |
| A brake caliper is provided for applying a braking force to a wheel, rotor, disc, or the like. The caliper includes a brake actuator, an actuator housing, a bearing for rotatably and slideably receiving the brake actuator in the actuator housing, and a ramp for displacing the brake a |
| 4428184 |
Safety mounting for lawn mower blade |
January 31, 1984 |
| A rotary lawn mower blade mounted on a blade carrier by diametrically spaced bolts is further retained against release from the drive shaft by a retainer fixed on the drive shaft and having a shank extending through a central opening in the blade and having an enlarged head to obstruct |
| 4416107 |
Lawn mower blade control mechanism |
November 22, 1983 |
| A combined safety clutch and brake mechanism for a rotary lawn mower blade has a driven blade carrier with self-energizing centrifugal shoes biased to engagement with a driving drum. Brake drum segments fixed to the shoes are engaged by a brake band which physically forces the shoes to |
| 4413468 |
Lawn mower blade retainer |
November 8, 1983 |
| A rotary lawn mower blade mounted on a blade carrier by diametrically spaced bolts is further retained against release from the drive shaft by a retainer fixed on the drive shaft and having a cylindrical shank extending in bearing relation through a central opening in the blade having an |
| 4335585 |
Lawn trimmer construction |
June 22, 1982 |
| A lawn trimmer has a tubular shaft assembly which structurally and drivingly connects an upper power head to a lower rotary tool head in a lawn-trimming tool. The assembly includes a bent portion to dispose its opposite ends at an angle to each other, and comprises an outer frame sha |
| 4326368 |
Clutch and brake for rotary lawn mower |
April 27, 1982 |
| A lawn mower blade clutch-brake mechanism having a driving drum and a driven blade carrier, the carrier having clutch shoes engageable with the inside of the drum and brake drum segments fixed to the shoes and disposed outside the drum for engagement by an encircling brake band which bot |
| 4316355 |
Combined flywheel and clutch mechanism for lawn mower blade |
February 23, 1982 |
| A lawn mower engine having a lightweight top rotor of low polar inertia drives a rotary blade through a clutch-flywheel rotor having sufficient inertia to provide the major flywheel effect for the engine. Clutch faces at the rotor periphery engage a surrounding blade-carrier drum and hav |
| 4297829 |
Lawn mower blade rotation warning device |
November 3, 1981 |
| A warning device for a lawn mower having a rotary blade driven from a motor through a centrifugal clutch and normally held stopped by a brake which is released by a deadman control. The warning device comprises a flexible clicker post such as a close-wound helical spring carried by the c |
| 4277936 |
Combined flywheel and clutch driver, and control and warning device |
July 14, 1981 |
| A combined engine flywheel and centrifugal clutch driver for a rotary lawn mower blade. Two heavy circular plates, as a quarter-inch steel plate, of large diameter, e.g., six inches, are riveted together against three peripherally spaced pairs of spacer slugs stamped from the same materi |
| 4226021 |
Shaft assembly for lawn trimmer |
October 7, 1980 |
| A drive and frame shaft assembly for a lawn trimming tool or the like, having a bent portion to dispose the tool end of the assembly at an angle to the head end thereof. A curved assembly of a frame shaft and sheath for a flexible drive shaft is formed by, first, assembling onto a straig |
| 4221284 |
Clutch and brake assembly for implement drive |
September 9, 1980 |
| A coil spring clutch connects a driving hub to a driven sleeve rotatable on the hub and the sleeve drives an output or second driven member through a torque limiting clutch. The spring is readily declutched by arresting rotation of its leading end, as by interposing a stop in the path of |
| 4188719 |
Lawn trimmer chain saw attachment |
February 19, 1980 |
| A lawm trimmer chain saw conversion attachment has a mounting blade which mounts to a chain saw power head in place of the chain bar. The blade supports a housing formed of complementary die-cast halves which contains bevel gears between an input shaft that is chain driven at reduced spe |
| 4152881 |
Lawn mower blade rotation warning device |
May 8, 1979 |
| A warning device for a lawn mower having a rotary blade driven from a motor through a centrifugal clutch and normally held stopped by a brake which is released by a deadman control. A clicker arm is pivoted to the clutch driver and spring-pressed toward engagement with the driven clutch |
| 4148173 |
Lawn mower blade control apparatus |
April 10, 1979 |
| A lawn mower blade mounted coaxially at the bottom of a vertical engine drive shaft is normally de-clutched from the shaft and stopped by a brake. When the engine is accelerated, the blade is released by the brake and clutched by a centrifugal clutch to the engine driven shaft. The blade |
| 4148141 |
Lawn trimmer cutter head |
April 10, 1979 |
| A rotary cutter head for a lawn trimmer or the like has a die cast head body comprising a top circular wall and a depending hub, with a plate riveted to the bottom of the hub for forming a spool to receive a winding of flexible cutting line such as monofilament nylon. A peripheral de |
| 4126928 |
Method of making a shaft assembly |
November 28, 1978 |
| A drive and frame shaft assembly for a lawn trimming tool or the like, having a bent portion to dispose the tool end of the assembly at an angle to the head end thereof. A curved assembly of a frame shaft and sheath for a flexible drive shaft is formed by, first, assembling onto a straig |
| 4102214 |
Variable-speed pulley and clutch |
July 25, 1978 |
| A centrifugal clutch and variable-speed pulley has a movable pulley flange mounted for both axial and rotational movement relative to a fixed flange. The fixed flange hub has a cylindrical primary bearing at the opposite side of the pulley groove from the flange and has a hub extension o |
| 4088210 |
Clutches with brake for implements |
May 9, 1978 |
| A coil spring clutch connects a driving hub to a driven sleeve rotatable on the hub and the sleeve drives an output or second driven member through a torque limiting clutch. The spring is readily declutched by arresting rotation of its leading end, as by interposing a stop in the path of |
| 4035994 |
Lawn mower blade control apparatus |
July 19, 1977 |
| Mounting and control apparatus for a driven element such as a lawn mower blade mounted coaxially on an engine drive shaft, in an arrangement in which, under control of a deadman lever, the driven element is normally de-clutched from the shaft and stopped by a brake, as when the driving |
