Kenneth A Hill

US Patent:

51929635, Mar 9, 1993

Filed:

Jun 12, 1991

Appl. No.:

7/713790

Inventors:

Kenneth R. Hill - Dallas TX

International Classification:

G03B 2900

US Classification:

354 81

Abstract:

A suspension apparatus that enables an operator to make fluid camera movements without holding up the weight of the camera. The apparatus includes a yoke rotatably mounted on a wheeled base for rotation about a vertical axis. A primary lever arm having having first and second ends and a medial portion is pivotably mounted on the yoke to form a fulcrum. A secondary arm has a first end pivotally attached to the second end of the primary lever arm, and a second end including a support for the camera. A counterweight arm has a first end pivotally attached to the first end of the primary lever arm. To insure balance, the apparatus includes a chain drive mechanism, responsive to pivoting of the secondary arm about the second end of the primary lever arm in a first direction, for pivoting the counterweight arm about the first end of the primary lever arm in a second opposed direction. In addition, the apparatus includes a chain drive mechanism for maintaining the camera level relative to the base as the secondary arm is pivoted about the second end of the primary lever arm.