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TWIN DISC CLUTCH CO

Overview
  • Total Patents
    296
About

TWIN DISC CLUTCH CO has a total of 296 patent applications. Its first patent ever was published in 1918. It filed its patents most often in United States, France and United Kingdom. Its main competitors in its focus markets mechanical elements, machines and transport are MEANS IND INC, PETZOLD RAINER and SULZER EUROFLAMM GERMANY GMBH.

Patent filings in countries

World map showing TWIN DISC CLUTCH COs patent filings in countries
# Country Total Patents
#1 United States 163
#2 France 51
#3 United Kingdom 50
#4 Germany 19
#5 Belgium 11
#6 Canada 1
#7 Sweden 1

Patent filings per year

Chart showing TWIN DISC CLUTCH COs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Pearmain William J 29
#2 Aschauer George R 26
#3 Black James B 19
#4 Hilpert Conrad R 16
#5 Shurts Wilbur F 15
#6 Aschauer George Reisch 11
#7 Hilpert Conrad Roth 11
#8 Batten Percy H 9
#9 Adamson Nicholas F 8
#10 Dunkelow Henry J 8

Latest patents

Publication Filing date Title
US3438469A Control for a modulated clutch and reversible transmission with shiftrestricting inhibitors
US3446323A Clutch plates having means to prevent flutter
US3417845A Actuating system for multi-ratio transmission
US3348643A Electro-hydraulic controls for power drive system
GB1091558A Controls for power drive system
US3369639A Fluid actuated clutch with modulated exhaust valve
US3373853A Hydraulically actuated mechanism
US3352395A Friction clutch having centrifugally operated valve means
US3326338A Combined hydraulic coupling and friction clutch power transmission
US3328961A Multiple stage, hydraulic jet propulsion apparatus for water craft
US3324979A Power transmission
US3323388A Differential transmission having piloted output shafts
US3322247A Transmission and clutch with single control
US3348644A Control for a power drive system and including shift-restricting inhibitors for a reversible transmission
US3319745A Transmisstion and clutch with single control
US3352392A Clutch and transmission with dual modulating fluid controls
US3324981A Combined cone and plate type clutch mechanism
US3324983A Output speed control system for a variable capacity friction clutch
US3336820A Power transmission
US3315773A Electric coil clutch in series with friction coupling