Patent ID: 9394923
Filing Date: 2016-07-19
CPC Classification: B66C,F15B

Claim Text:
1. A hydraulic lifting apparatus comprising: a main hydraulic cylinder movable between an extended position and a retracted position; a main hydraulic circuit operatively connected to the main hydraulic cylinder; and first and second spaced apart follower hydraulic cylinders, each being movable between an extended position and a retracted position, wherein the first and second follower hydraulic cylinders are positioned on opposite sides of the main hydraulic cylinder, and wherein each of the main hydraulic cylinder and the first and second follower hydraulic cylinders support a header beam, and wherein each of the main hydraulic cylinder and the first and second follower hydraulic cylinders are positioned on a common base, and wherein said hydraulic lifting apparatus further includes a follower hydraulic circuit operatively connected to the follower hydraulic cylinders, the follower hydraulic circuit being separate from the main hydraulic circuit, and wherein the main hydraulic circuit includes a main hydraulic pump and the follower hydraulic circuit includes a follower hydraulic pump.