×

Automated bot transfer arm drive system

  • US 9,499,338 B2
  • Filed: 12/15/2011
  • Issued: 11/22/2016
  • Est. Priority Date: 12/15/2010
  • Status: Active Grant
First Claim
Patent Images

1. An autonomous transport vehicle comprising:

  • a transfer arm including at least one finger and a movable finger support member, the at least one finger being movably coupled to the finger support member so that the finger support member moves in a first direction relative to a reference frame of the vehicle and the at least one finger linearly moves relative to the finger support member in a second direction substantially perpendicular to both the first direction in the reference frame of the vehicle and a travel surface on which the autonomous transport vehicle travels;

    at least one sensor configured to detect movement of the at least one finger and being indexed to define more than two positions of the at least one finger in the second direction relative to the movable finger support member, the at least one sensor having a registration member and a detection member where one of the registration member and detection member is mounted to each of the at least one finger so as to be linearly movable with and by movement of a respective one of the at least one finger and the other one of the registration member and detection member is stationary relative to the at least one finger; and

    a controller in communication with the at least one sensor, the controller being configured to determine a position of the at least one finger, the second direction relative to the movable finger support member, based on a proximity of the registration member relative to the detection member that detects the more than two positions of the at least one finger.

View all claims
  • 2 Assignments
Timeline View
Assignment View
    ×
    ×