Patents Assigned to John S. Barnes GmbH
  • Hydraulic displacement machine having gears pressed toward each other
    Patent number: 5730589
    Abstract: A hydraulic displacement machine including two external gears located in the machine housing and meshing with each other, with the teeth of the two gears sealingly engaging the inner surface of the housing, and with meshing teeth of the two gears sealing the two port regions from each other, and an arrangement for communicating pressure prevailing in the port region of the housing having a higher pressure to the port region of the housing having a lower pressure over a circumference of each of the two gears.
    Type: Grant
    Filed: July 1, 1996
    Date of Patent: March 24, 1998
    Assignee: John S. Barnes GmbH
    Inventors: Fred Rausch, Horst Weidhaas
  • Invalute gearset
    Patent number: 5454702
    Abstract: An involute gearset formed of at least two meshing gear wheels the teeth of which have flanks formed of different curves including an involute in the central region, an arcuate region adjoining the involute, and a straight line segment which intersects the end face of a respective tooth and tangentially passes into the arcuate region.
    Type: Grant
    Filed: May 20, 1994
    Date of Patent: October 3, 1995
    Assignee: John S. Barnes GmbH
    Inventor: Horst Weidhass