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OILGEAR CO

Overview
  • Total Patents
    395
About

OILGEAR CO has a total of 395 patent applications. Its first patent ever was published in 1918. It filed its patents most often in United States, United Kingdom and Canada. Its main competitors in its focus markets engines, pumps and turbines, machines and mechanical elements are DOWTY TECHNICAL DEV LTD, DANUVIA KOEZPONTI SZERSZAM and GRIFFITH RAYMOND C.

Patent filings per year

Chart showing OILGEAR COs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Walter Ferris 136
#2 Douglas James K 51
#3 Ferris John P 27
#4 Ransom Tyler 24
#5 Ernst Wiedmann 18
#6 Grad Adolf R 17
#7 Davis Richard E 12
#8 Jendrzejek Gary S 6
#9 Fobian George H 6
#10 Broome Joseph W 6

Latest patents

Publication Filing date Title
EP1373725A1 Saddle bearing liner for axial piston pump
CA2564289A1 Saddle bearing liner for axial piston pump
US4932310A Bearing lubrication in axial piston fluid devices
US4710107A Swashblock lubrication in axial piston fluid displacement devices
US4644748A Constant speed hydraulic drive
EP0213124A1 Axial piston pump shoe retainer
US4560309A Two tooth tapered reamer
US4434811A Coupling seal and method of assembly
US4412792A Intensifier pump with integrated check valve
US4167895A Axial pump with displacement control device
US3884039A Hydraulic pump with horsepower limiter
US3908518A Fluid device having constant horsepower displacement control means
US3866520A Fluid device having interchangeable displacement control means
US3846049A Intensifier pump with half wave modulator
US3868889A Fluid device having means for aligning a cylinder barrel
CA979733A Fluid device having interchangeable displacement control means
CA975219A Axial piston fluid translating device
US3744378A Pintle pump
US3806280A Fluid device having interchangeable displacement control means
US3535876A Flow transducer