Patents Assigned to DaimlerChrylser Corporation
  • Patent number: 6079288
    Abstract: A novel transmission is provided that has a first, second, third and fourth gear, wherein said second gear includes two alternate and selectable speed ratios. The primary speed ratio of the second gear is used during upshifts and downshifts of adjacent gears. The alternate speed ratio of the second gear is utilized exclusively during downshifts from non-adjacent gears and may also be utilized during a downshift from the third gear depending on certain conditions and parameters. The primary speed ratio is larger than the alternate speed ratio of the second gear to provide better acceleration characteristics of the transmission during upshifting. The smaller alternate speed ratio of the second gear can provide smoother downshifts because of the less abrupt speed ratio change from the higher gears. Also, a method for controlling the gear selection of an automatic transmission having a plurality of gears is provided, wherein one position includes two speed ratios.
    Type: Grant
    Filed: April 1, 1999
    Date of Patent: June 27, 2000
    Assignee: DaimlerChrylser Corporation
    Inventors: Gerald L. Holbrook, Hussein A. Dourra
  • Patent number: 6070560
    Abstract: A cooling fan system includes an engine driven mechanical fan and an electrically driven fan. The mechanical fan and the electrical fans are placed in series within a common shroud that directs air between them. In one application, the electrical fan generates an axially directed air flow and the mechanical fan produces a radially directed air flow. The electrical fan is rotated counter to the mechanical fan.
    Type: Grant
    Filed: November 4, 1998
    Date of Patent: June 6, 2000
    Assignee: DaimlerChrylser Corporation
    Inventors: Stephen Johnston, Kevin J. Laboe
  • Patent number: D532716
    Type: Grant
    Filed: December 22, 2005
    Date of Patent: November 28, 2006
    Assignee: DaimlerChrylser Corporation
    Inventor: Mark T Moushegian