Patents Examined by Huan Lee
  • Patent number: 10041229
    Abstract: A system for controlling an operation of a machine is disclosed. The system includes an image capturing device and a controller. The image capturing device generates a signal indicative of a surrounding area of the machine. The controller is in communication with the image capturing device. The controller determines a preceding work cycle of the machine comprising a dig segment and determines a preceding segment associated with the preceding work cycle to be a dump segment. The controller further identifies a work aggregate within the surrounding area of the machine, when the preceding segment of the preceding work cycle is the dump segment. Further, the controller determines a distance between an implement of the machine and the work aggregate and issues a shift request to downshift a gear drive of a transmission system of the machine, if the distance is less than a predefined distance.
    Type: Grant
    Filed: November 2, 2015
    Date of Patent: August 7, 2018
    Assignee: Caterpillar Inc.
    Inventors: Zhijun Cai, Bradley K. Bomer, Jeffrey S. Alig, Aaron R. Shatters, Eric Cler, Brad R. Van De Veer, Thomas E. Beccue
  • Patent number: 8202189
    Abstract: A limited slip differential includes a driving plate, backing plates, differential gear assemblies, and a transmission assembly engaged together inside a sealed casing where fluid is pumped. The driving plate has pairs of communicated openings for interlocking two gears of each gear assembly, which extend by opposite directions from the driving plate for separately engaging with the transmission assembly. While synchronously rotating the plates, the gear assemblies are alternatively soaked into the fluid and each permits the fluid passing among the gears for adjusting the rotational speed. In the event that the rotational speed difference of axle shafts of the vehicle exceeds a threshold value, the LSD applies at least one gear assembly to generate a back pressure and efficiently block the fluid passing through the gears for limiting mutual rotational speed difference, hence achieving a limited-slip effect.
    Type: Grant
    Filed: July 9, 2009
    Date of Patent: June 19, 2012
    Inventors: Kuo-Ming Lee, Yu-An Hsieh