Hendrickson Usa, L L.c.

The Boler Company

Fruehauf Corporation

Henderickson Usa, L.l.c.

Hendrickson International Corporation

Michael J Keeler

Andrew J Westnedge

Michael John Gottschalk

Dmitriy Enrikovich Rubalskiy

Phillippi R Pierce

Jeffrey Russell Zawacki

John Edward Ramsey

Scott Allen Massa

Ashley Thomas Dudding

Jeff R Zawacki

Jacob D Andreasen

Nicholas J Giamati

Jason M Ramus

R Scott Fulton

Damon Elwood Dilworth

Matthew J Van Meter

Michael Paul Bloink

Matt J Wilson

Santo A Padula

Stephen J Ringe

Tjong T Lie

Joseph M Ross

Scott Allen Dilling

Charles A Van Breemen

Jason P Shiffler

Matthew VanMeter

Jerome Cortez

Gareth A Wallace

Allen Hatch

Matthew D Kowalski

Jason C Fugitt

Ervin K Van Denberg

Richard S Holum

Michael Gottshalk

Richard A Abott

Michael P Bloink

Jacob Andreasen

Scott A Massa

Dimitriy Rubalskiy

Matthew Vanmeter

A fabricated torque arm for use in a vehicle suspension, including a rod having a solid rectangular cross-section, the rod having a first end and an oppositely disposed second end, a first bushing hub, and wherein the rod is only a single piece cut from a metal plate or sheet, wherein the first bushing hub comprises cut tubing, wherein the first end of the rod has a radius that conforms to an outer surface of the first bushing hub, and wherein the first end of the rod is welded to the outer surface of the first bushing hub.

Torque rod for vehicle suspension

A clamp group for a vehicle leaf spring suspension is disclosed. The clamp group secures a longitudinally disposed, leaf spring at separate and distinct locations, between which the leaf spring is undamped and spaced away from the top and bottom pads of the clamp group. Shear stress is reduced and the spring remains active throughout its length.

Spread active clamp group for vehicle leaf spring

A brake system component axle mount for a vehicle axle/suspension system includes an axle having at least one depression formed therein. A sleeve is formed with at least one depression and disposed about the axle so that the axle depression and the sleeve depression matingly engage one another to form a mated pair of depressions. A brake mount assembly is rigidly attached to the sleeve. A method of forming the brake system component axle mount includes providing an axle and disposing a sleeve about the axle. At least one mated pair of depressions is simultaneously formed in the axle and the sleeve. A brake mount assembly is rigidly attached to the sleeve.

Brake system component axle mount

Composite suspension components are disclosed. The components are made from resin containing elongated fibers (). The arms of the suspension components may receive reinforcement () using different devices and methods. A composite torque rod also incorporates a tunable compliance feature.

Composite suspension components

An automatic air suspension control system is provided for use in combination with a vehicle having a non-driven rear axle, a driven rear axle, and an air suspension associated with the rear axles to apply a load to each of the rear axles. The air suspension control system is programmed to maintain the load applied to the non-driven rear axle at a level that is less than the load applied to the driven rear axle until the load applied to the driven rear axle is equal to a threshold amount. The threshold amount may be equal to the maximum load that may be legally applied to the driven rear axle or some lower level. There may be no load applied to the non-driven rear axle prior to the load on the driven rear axle reaching the threshold amount or may be a non-zero amount.

Air suspension control system

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

An axle-to-beam or crossbrace-to-beam connection for a vehicle axle/suspension system includes an axle or crossbrace having at least one depression formed therein. A sleeve is formed with at least one depression and disposed about the axle or crossbrace so that the axle or crossbrace depression and the sleeve depression matingly engage one another to form a mated pair of depressions. A method of forming the axle-to-beam or crossbrace-to-beam connection includes providing an axle or crossbrace and disposing a sleeve about the axle or crossbrace. At least one mated pair of depressions is simultaneously formed in the axle or crossbrace and the sleeve. The sleeve is immovably mounted to a vehicle axle/suspension system.

Heavy-duty vehicle axle-to-beam or crossbrace-to-beam connection

A piston for an air spring of a heavy-duty vehicle includes a sidewall and a central hub. The sidewall and the central hub are attached to a first bottom plate of the piston. A top plate is removeably attached to a top portion of the sidewall and a top portion of the central hub. A bottom portion of said central hub includes a second bottom plate that is recessed relative to the first bottom plate for attachment to a piston mounting pedestal that is in turn mounted to a beam of a suspension assembly of the heavy-duty vehicle.

Piston for an air spring of a heavy-duty vehicle

An air spring for a heavy-duty vehicle axle/suspension system includes a bellows chamber operatively connected to a piston chamber. An opening is disposed between the bellows chamber and the piston chamber in order to allow fluid to communicate between the bellows chamber and the piston chamber. The cross-sectional area of the opening and the volumes of the bellows chamber and the piston chamber are tuned in order to optimize the damping characteristics of the air spring.

Air spring for a heavy-duty vehicle with damping features

A vehicle tire inflation system includes an air supply that is connected to a vehicle tire by a pneumatic conduit. A pump that is independent of and pneumatically parallel to the vehicle air supply includes an inlet and an outlet. The pump inlet receives air from atmosphere, the pump compresses the air, and the pump outlet is fluidly connected to the pneumatic conduit. When the air pressure in the pneumatic conduit drops below a predetermined level, compressed air from the pump is introduced into the pneumatic conduit, thus increasing the air pressure in the conduit to increase the air pressure that is available to the tire. A reservoir tank, which is also independent of the vehicle air supply, may be in fluid communication with the pump outlet and the pneumatic conduit.

Tire inflation system with parallel pump

An axle-to-beam connection for a vehicle axle/suspension system includes an axle having at least one depression formed therein. A sleeve is formed with at least one depression and disposed about the axle so that the axle depression and the sleeve depression matingly engage one another to form a mated pair of depressions. A method of forming the axle-to-beam connection includes providing an axle and disposing a sleeve about the axle. At least one mated pair of depressions is simultaneously formed in the axle and the sleeve. The sleeve is immovably mounted to a vehicle axle/suspension system.

Heavy-duty axle-to-beam connection

A highly roll stable suspension system for a truck, trailer, or semi-trailer. In at least one embodiment, the suspension includes at least three beam structures, one beam being located beneath each respective longitudinal side frame member of the vehicle, and a third beam being located midpoint between the side frame members and which occupies substantially less space than the space between these opposing longitudinal side frame members of the vehicle.

Roll stable vehicle suspension system

A parallelogram lift axle suspension system includes an in-line lift bellows located between and vertically aligned with a pair of upper and lower control arms so as to provide bi-directional expansion and contraction of the lift bellows for raising and lowering the suspension while increasing the space available between the longitudinal frame rails enabling use of the suspension in certain vehicles by avoiding interference with other vehicle components of the vehicle located in this space.

In-line lift axle suspension system

Growing community of inventors

Naperville, IL, United States of America

Michael J Keeler