Caterpillar Inc.

Jason J Hagedorn

Wayne Harshberger

Darren M Schambach

Joel Robert Grimes

Paul Douglas Hagen

Jay Holloman Renfrow

Wayne E Harshberger, Ii

James White

William C Tracy

Susan Green

Karl Canner

Jia X Zhao

A tilting system for an implement pivotally connected to a lift arm. The tilting system includes a tilt cylinder configured to provide a rotary movement to the implement. The tilting system includes a tilt lever pivotally connected to the tilt cylinder by a pivot pin E and to the implement by a pivot pin C. The tilting system further includes a tilt link pivotally connected to a lift arm by a pivot pin F, and to the tilt lever by a pivot pin D. An angle defined between a line DE connecting the pivot pins D and E and a line DC connecting the pivot pins D and C, is in the range of 135 to 165 degrees.

Tilting system for loader machine

An improved Z-bar linkage for wheel loader machines for maneuvering an implement such as a bucket or pallet forks may include lift arms pivotally connected between an end frame of the machine and the implement, a tilt link pivotally connected between the implement and a tilt lever that is pivotally connected between the tilt link and the lift arms. Lift cylinders may rotate the lift arms to raise and lower the implement, and a tilt cylinder may drive the tilt lever and tilt link to rotate the implement between a dump position and a racked position. Ratios of the lengths of these kinematic elements are provided such that the good performance with one implement, such as bucket, does not result in poor performance with another implement, such as the pallet forks.

Z-bar linkage for wheel loader machines

A linkage assembly that includes a pivot pin cartridge disposed to connect pivotably a lift arm and a lever of the linkage assembly along an axis including the cartridge. The pivot pin cartridge includes a pin, at least one bushing pivotably disposed about at least a portion of the pin, and a pair of sleeve bearing inserts free-floatingly positioned about the pin and within at least a portion of the bushing. The rear tilt lever is coupled to the bushing for rotation about the pin, while at least one of a pair of side plates of the lift arm is coupled to the pivot pin.

Linkage assembly

Growing community of inventors

Singapore, Singapore

Jason J Hagedorn