Assignee
HOFFCO INC
US·32 granted patents·938 citations·filing 1975–2013
Top patents by PatentIndex Score
32 records- 0196US4226021AShaft assembly for lawn trimmerHOFFCO INC·Filed 1978·Granted Oct 7, 1980·73 cites·15 claims
- 0296US4035994ALawn mower blade control apparatusHOFFCO INC·Filed 1975·Granted Jul 19, 1977·47 cites·8 claims
- 0394US4188719ALawn trimmer chain saw attachmentHOFFCO INC·Filed 1978·Granted Feb 19, 1980·68 cites·15 claims
- 0492US4316355ACombined flywheel and clutch mechanism for lawn mower bladeHOFFCO INC·Filed 1980·Granted Feb 23, 1982·41 cites·24 claims
- 0591US4102214AVariable-speed pulley and clutchHOFFCO INC·Filed 1976·Granted Jul 25, 1978·43 cites·19 claims
- 0687US5647810ADrive arm-engaging roller for centrifugal clutchHOFFCO INC·Filed 1995·Granted Jul 15, 1997·57 cites·46 claims
- 0786US6006434AQuick-release component connector for lawn toolHOFFCO INC·Filed 1997·Granted Dec 28, 1999·102 cites·48 claims
- 0886USD252130SPower driven lawn trimmerHOFFCO INC·Filed 1977·Granted Jun 19, 1979·27 cites·1 claims
- 0986US4148141ALawn trimmer cutter headHOFFCO INC·Filed 1978·Granted Apr 10, 1979·36 cites·15 claims
- 1082US5597060ACentrifugal actuator for centrifugal clutchHOFFCO INC·Filed 1994·Granted Jan 28, 1997·46 cites·26 claims
- 1179US5377774AVariable speed drive systemHOFFCO INC·Filed 1993·Granted Jan 3, 1995·47 cites·25 claims
- 1277US5437356ACentrifugal clutchHOFFCO INC·Filed 1993·Granted Aug 1, 1995·28 cites·34 claims
- 1376US5048616AGarden tiller tine assemblyHOFFCO INC·Filed 1990·Granted Sep 17, 1991·31 cites·19 claims
- 1475US4126928AMethod of making a shaft assemblyHOFFCO INC·Filed 1977·Granted Nov 28, 1978·25 cites·15 claims
- 1574US4633978ABrake caliper includes mechanical actuator with camming device and manual wear compensatorHOFFCO INC·Filed 1985·Granted Jan 6, 1987·21 cites·26 claims
- 1673US4416107ALawn mower blade control mechanismHOFFCO INC·Filed 1982·Granted Nov 22, 1983·26 cites·17 claims
- 1773US4148173ALawn mower blade control apparatusHOFFCO INC·Filed 1977·Granted Apr 10, 1979·20 cites·12 claims
- 1867US5411122ACone ramp clutchHOFFCO INC·Filed 1993·Granted May 2, 1995·22 cites·36 claims
- 1965US4335585ALawn trimmer constructionHOFFCO INC·Filed 1980·Granted Jun 22, 1982·19 cites·8 claims
- 2061US4326368AClutch and brake for rotary lawn mowerHOFFCO INC·Filed 1980·Granted Apr 27, 1982·18 cites·16 claims
- 2160US5246403APivoting belt tensioning deviceHOFFCO INC·Filed 1991·Granted Sep 21, 1993·18 cites·29 claims
- 2260US4277936ACombined flywheel and clutch driver, and control and warning deviceHOFFCO INC·Filed 1979·Granted Jul 14, 1981·15 cites·15 claims
- 2360US4088210AClutches with brake for implementsHOFFCO INC·Filed 1976·Granted May 9, 1978·16 cites·6 claims
- 2454US6155940AAdjustable cam weights for torque converterHOFFCO INC·Filed 1999·Granted Dec 5, 2000·16 cites·17 claims
- 2553US4413468ALawn mower blade retainerHOFFCO INC·Filed 1982·Granted Nov 8, 1983·20 cites·10 claims
- 2650US4152881ALawn mower blade rotation warning deviceHOFFCO INC·Filed 1977·Granted May 8, 1979·10 cites·9 claims
- 2747US5419421AQuiet-running centrifugal clutchHOFFCO INC·Filed 1993·Granted May 30, 1995·10 cites·54 claims
- 2841USD704941SBenchHOFFCO INC·Filed 2013·Granted May 20, 2014·7 cites·1 claims
- 2940US4297829ALawn mower blade rotation warning deviceHOFFCO INC·Filed 1980·Granted Nov 3, 1981·7 cites·10 claims
- 3040US4221284AClutch and brake assembly for implement driveHOFFCO INC·Filed 1978·Granted Sep 9, 1980·5 cites·1 claims
- 3139US5427217ASteering clutch brake assemblyHOFFCO INC·Filed 1993·Granted Jun 27, 1995·13 cites·37 claims
- 3234US4428184ASafety mounting for lawn mower bladeHOFFCO INC·Filed 1982·Granted Jan 31, 1984·4 cites·3 claims
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