Freewheeling system for tandem axles

Patent metadata

Field	Value
Publication number	US-10926632-B2
Application number	US-201716469343-A
Country	US
Kind code	B2
Filing date	Dec 12, 2017
Priority date	Dec 14, 2016
Publication date	Feb 23, 2021
Grant date	Feb 23, 2021

Abstract

A freewheeling system for tandem axles, the system including a wheel hub, a wheel hub cover attached to an end of the wheel hub, the wheel hub cover having tines predicted thereon, an actuator chamber, a piston, a sleeve, an axle shaft, and at least one air input. The at least one air input feeding the actuator chamber in which is accommodated the piston that is engaged in the sleeve concentrically mounted in an end of the axle shaft having axial mobility, wherein the sleeve has a flange endowed with tines that mechanically cooperate with the tines predicted on the wheel hub cover.

First claim

The invention claimed is:

1. A freewheeling system for tandem axles, the system comprising:
a wheel hub;
a wheel hub cover attached to an end of the wheel hub, the wheel hub cover having tines predicted thereon;
an actuator chamber;
a piston;
a sleeve;
an axle shaft; and
at least one air input feeding the actuator chamber in which is accommodated the piston that is engaged in the sleeve concentrically mounted in an end of the axle shaft having axial mobility, wherein said sleeve has a flange endowed with tines that mechanically cooperate with the tines predicted on said wheel hub cover.

2. The freewheeling system for tandem axles of claim 1 , wherein said air input comprises an external configuration, which is adapted together with an auto-calibration system of a vehicles.

3. The freewheeling system for tandem axles of claim 1 , wherein said air input comprises an internal configuration wherein said wheel hub has an air passage channel, or, in addition, has an internal rotational valve.

4. The freewheeling system for tandem axles of claim 1 , wherein said piston comprises a return element.

5. The freewheeling system for tandem axles of claim 4 , wherein said return element is a spring.

6. A vehicle for transportation of goods, the vehicle comprising:
a plurality of wheels each with a tire thereon;
at least an assembly of tandem axles, which is formed by at least two driven axles responsible for supporting the wheels with tires of the vehicle, wherein the assembly of tandem axles include supporting assemblies of the wheels having at least a freewheeling system according to claim 1 .

7. The vehicle for transportation of goods of claim 6 , wherein the vehicle is a truck, a heavy truck, or a two-axle truck, which are endowed with tandem or tridem axles.

Assignees

• Cnh Ind America Llc

Inventors

• De Lemos José Francivaldo Pereira

Classifications

• B60K17/36 Primary

  for driving tandem wheels · CPC title

• B60K17/26

  characterised by arrangement, location, or type of freewheel device · CPC title

• B60Y2400/421

  Dog type clutches or brakes · CPC title

• B60K23/08

  for changing number of driven wheels {, for switching from driving one axle to driving two or more axles (B60K17/3515 takes precedence)} · CPC title

• B60Y2400/408

  Pneumatic actuators · CPC title