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DROESCHEL HELMUT

Overview
  • Total Patents
    33
About

DROESCHEL HELMUT has a total of 33 patent applications. Its first patent ever was published in 1972. It filed its patents most often in Germany, EPO (European Patent Office) and Canada. Its main competitors in its focus markets mechanical elements, engines, pumps and turbines and transport are RONG HUAQING, STONE TECHNOLOGIES CO LTD C and PARK DONG HOON.

Patent filings in countries

World map showing DROESCHEL HELMUTs patent filings in countries

Patent filings per year

Chart showing DROESCHEL HELMUTs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Droeschel Helmut 32

Latest patents

Publication Filing date Title
CA2149623A1 Tent with frame
ZA9503905B Tent with frame
EP0683292A1 Tent with frame
EP0401398A1 Igloo tent
WO9015209A1 Igloo tent
DE3420529A1 Axial piston engine with variable stroke
DE3309793A1 Bicycle hub with two free wheels
DE3240840A1 Bicycle hub
DE3121304A1 Mass balance for piston engines
DE3121301A1 Internal combustion engine
DE3121302A1 Combustion engine
DE3121303A1 Arrangement of main motor and auxiliary motor
DE2904066A1 IC engine layout using uneven number of cylinders - has two crankpins carrying different number of connecting rod assemblies
DE2904061A1 Drive and driven shafts in gearbox arrangement - each have three gearwheels and displaceable engagement muff
DE2904063A1 Teeth arrangement between engagement muff and shaft - is such that synchronising ring inner teeth do not contact outer teeth of shaft
DE2904062A1 One intermediary shaft in automotive gearbox - functions for at least one forward gear stage, but both intermediary shafts are required for reverse
DE2904065A1 Ring wheel of planetary gear in gearbox - in permanent connection with driven part pump wheel of hydrodynamic torque converter, being engine connected
DE2904064A1 Multispeed motor vehicle gearbox - has main gear change sleeve coupled to gear change lever for its longitudinal motion and to gear change shaft for its cross motion
DE2808895A1 Motorcycle or light vehicle gearbox - has pronged selector fork engaging sliding sleeves on parallel shafts
DE2808896A1 Multiple ratio heavy vehicle gearbox - has multiple position selector arm with teeth engaging grooves on parallel spring loaded shaft