Hendrickson Usa, L L.c.

Jacob D Andreasen

John Edward Ramsey

Jason M Ramus

Nicholas J Giamati

Michael J Keeler

R Scott Fulton

Andrew J Westnedge

Jeff R Zawacki

Donald R Hester

Benedetto A Naples

Ryan J Lippincott

John E Ramsey

An axle/suspension assembly for a heavy-duty vehicle supported by a frame and a hanger includes a beam, an axle, and a bumper. The axle is supported by a first portion of the beam for pivotal movement of the beam relative to the hanger at a pivot joint. The first portion of the beam is located on a first side of the pivot joint. The bumper is fixed to at least one of the frame, the hanger, and a second portion of the beam. The second portion of the beam is located on an opposite second side of the pivot joint. The bumper includes a portion for contacting structure of at least another of the frame, the hanger, and the beam to limit pivotal movement of the axle in one direction.

Axle/suspension system with down stop

A slider suspension system for a heavy-duty vehicle includes a slider assembly with a main member that is movable relative to a primary frame of the heavy-duty vehicle in a first direction along the extent of the main member. The main member has a first portion and a second portion extending transverse to the first portion. A friction reducing slider wear pad is fixed to the main member and interposed between the main member and the primary frame. The friction reducing slider wear pad has a first segment fixed to the first portion of the main member. The friction reducing slider wear pad also has a second segment engaging at least a part of the second portion of the main member to inhibit movement of the friction reducing pad relative to the main member in a second direction transverse to the first direction.

Slider wear pad

A mechanical down-stop for heavy-duty vehicle axle/suspension systems which includes an angled bracket that is rigidly/stiffly attached to the vehicle frame at one end, and is attached to a flexible portion of the mechanical down-stop at its other end. The flexible portion is attached to a beam of the axle/suspension system. The angled bracket is formed of an elastically deformable material and includes a bend that enables the bracket to act as a spring. The angled bracket and the flexible portion limit downward movement and react the downward force of the beam.

Mechanical down-stop for axle/suspension systems

An air spring with damping characteristics for a suspension assembly of a heavy-duty vehicle includes a bellows and a piston. The bellows includes a bellows chamber. The bellows is attached to a main member of the heavy-duty vehicle and to the piston. The piston includes an open bottom that is sealingly closed by a disc attached to the open bottom. The piston and the disc define a piston chamber. The piston is mounted on the suspension assembly of the heavy-duty vehicle. The bellows chamber and the piston chamber are in fluid communication with each other via at least one opening, wherein airflow between the bellows chamber and the piston chamber provides damping to the suspension assembly of the heavy-duty vehicle.

Air spring with damping characteristics for heavy-duty vehicles

A suspension assembly of an axle/suspension system for a heavy-duty vehicle is mounted on the heavy-duty vehicle frame or sub-frame via a beam of the suspension assembly which is pivotally connected to a hanger connected to the vehicle frame. The pivotal connection includes the hanger, the beam, a bushing assembly and a fastener group, and a textured feature formed in at least one of at least a portion of the hanger, at least a portion of the bushing assembly, or at least a portion of the fastening means so that the textured feature inhibits relative movement of the bushing assembly with respect to the hanger.

Pivotal connection for heavy-duty vehicle suspension assembly

An axle/suspension system for heavy-duty vehicles having a frame and at least one suspension assembly operatively connected to the frame, the axle/suspension system including a mechanical stop having a plurality of links and a first end and a second end, the second end rigidly attached to the suspension assembly and the first end rigidly attached to the vehicle frame, wherein the first end and the second end control a distance between the first end and the second end, and control the plurality of links to attain a movement tolerance range of said mechanical stop from about 0.0 inches to about 2.0 inches.

Growing community of inventors

Akron, OH, United States of America

Jacob D Andreasen