Articulated jib for moving a camera during the production of a motion picture

摘要

An articulated jib for moving a load is supported on a base and comprises a first jib arm pivotably connected to a base. The first jib arm functions as a bascule and is pivotable about a first axis. There is a first counterweight disposed on the first jib arm. A second jib arm is pivotably connected to the first jib arm and is pivotable about a second axis. A linking rod connects the second jib arm to a lever arm which is also pivotably connected to the base. There is a second counterweight disposed on the lever arm.

主权项

1. An articulated jib for moving a camera, the jib being supported on a base and the jib comprising:
a first jib arm pivotably connected to the base, the first jib arm functioning as a bascule and being pivotable about a first axis; a first counterweight mounted on the first jib arm; a second jib arm pivotably connected to the first jib arm by a connector plate, the second jib arm being pivotable about a second axis and the camera being disposed at a distal end of the second jib arm; a lever arm pivotably connected to the base and a linking rod connecting the lever arm to the second jib arm, the lever arm extending away from the linking rod towards a distal end of the lever arm, and the linking rod being pivotably connected to the second jib arm; a second counterweight mounted on the distal end of the lever arm; and wherein the first jib arm includes two parallel frame bars, each of the frame bars being pivotably connected to the base and pivotably connected to the connector plate to form a parallelogram link mechanism, and wherein a full length of the linking rod extending between its points of connection with the second jib arm and the lever arm is equal to or less than a full length of each of the frame bars of the first jib arm between its respective points of connection with the second jib arm and the base.