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HOFFCO INC

Overview
  • Total Patents
    62
About

HOFFCO INC has a total of 62 patent applications. Its first patent ever was published in 1955. It filed its patents most often in United States, Canada and Italy. Its main competitors in its focus markets mechanical elements, agriculture and machines are SPEARHEAD MACHINERY LTD, ENNEPETALER SCHNEID MAEHTECH and HAYTERS LTD.

Patent filings in countries

World map showing HOFFCO INCs patent filings in countries
# Country Total Patents
#1 United States 43
#2 Canada 10
#3 Italy 2
#4 Japan 2
#5 Australia 1
#6 Germany 1
#7 France 1
#8 United Kingdom 1
#9 Mexico 1

Patent filings per year

Chart showing HOFFCO INCs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Hoff Stephen J 43
#2 Hoff Harry J 4
#3 Lohr Thomas H 4
#4 Hoff S 3
#5 Huddleston H Mike 2
#6 Templeton Jack B 2
#7 Suchiibun Jiei Hofu 2
#8 Uphaus Roderic N 1
#9 Patridge A Gary 1
#10 Hockersmith Harold M 1

Latest patents

Publication Filing date Title
US6155940A Adjustable cam weights for torque converter
US6006434A Quick-release component connector for lawn tool
US5647810A Drive arm-engaging roller for centrifugal clutch
US5597060A Centrifugal actuator for centrifugal clutch
US5437356A Centrifugal clutch
US5419421A Quiet-running centrifugal clutch
US5427217A Steering clutch brake assembly
US5411122A Cone ramp clutch
US5377774A Variable speed drive system
US5246403A Pivoting belt tensioning device
US5048616A Garden tiller tine assembly
US4633978A Brake caliper includes mechanical actuator with camming device and manual wear compensator
CA1183787A Clutch and brake for rotary lawn mower
CA1222964A Lawn mower blade control mechanism
US4416107A Lawn mower blade control mechanism
US4413468A Lawn mower blade retainer
CA1177002A Clutch and brake for rotary lawn mower
US4297829A Lawn mower blade rotation warning device
US4326368A Clutch and brake for rotary lawn mower
US4316355A Combined flywheel and clutch mechanism for lawn mower blade