Portal box

a technology of portal boxes and boxes, applied in the field of new portal box construction, can solve the problems of adversely affecting the angle of constant velocity (cv) joints of lift kits, and achieve the effect of low cost and easy adaptability to vehicle us

Inactive Publication Date: 2015-04-16
SUPERATV LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The portal box system effectively allows for the mounting of oversize wheels on off-road vehicles, maintaining proper steering geometry and increasing torque, while being cost-effective and versatile across various manufacturers' models.

Problems solved by technology

Typically, a lift kit will adversely affect constant velocity (CV) joint angles and necessitate replacement of the original equipment axles, including CV joints.

Method used

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Embodiment Construction

[0009]The invention is useful in lifting the chassis and increasing the wheel torque of light off road four-wheel drive vehicles such as the UTV illustrated in FIG. 1. The illustrated vehicle is originally manufactured by John Deere and marketed as a Model RSX 850i. It will be appreciated by those skilled in the art that the invention is applicable to vehicles of other manufacturers.

[0010]The invention provides a portal box system, available as a kit, that replaces a vehicle's original wheel hub assemblies. The kit can include four portal boxes 10 and associated backing plates 11. FIGS. 2 and 3 illustrate a typical portal box 10 and backing plate 11. The backing plate 11 at each wheel 12 (FIG. 1) can be identical or essentially identical. Each backing plate 10 is provided with upper and lower mounting brackets 16, 17. Preferably, the backing plate 10 is a steel plate, for example, ¼ inch thick. The brackets 16, 17, made of ½ inch steel plate, for example, are attached to the plate 1...

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Abstract

A kit for raising and increasing wheel torque of an off road four wheel vehicle comprising four portal boxes, each portal box being associated with an individual one of the vehicle wheels, the portal boxes enclosing identical gear sets and associated bearings, each portal box being adapted to receive the output of an axle constant velocity joint and having an output shaft projecting therefrom, a set of four metal backing plates for joining the portal boxes to the suspension arms of the vehicle, the backing plates being substantially identical, the backing plates each having inwardly extending mounting brackets for attaching to upper and lower suspension arm parts.

Description

BACKGROUND OF THE INVENTION[0001]The invention relates to a novel portal box construction for use in light off road vehicles.PRIOR ART[0002]Off road vehicles in the form of ATV's (all-terrain vehicles) and UTV's (utility task vehicles) are produced by numerous manufacturers. Purchasers and users of these vehicles frequently desire to fit them with larger tires to give them greater agility in traversing rough terrain. To fit larger tires on these vehicles, it is common to install a lift kit to raise the vehicle body to make room for the larger tires and to increase ground clearance. Typically, a lift kit will adversely affect constant velocity (CV) joint angles and necessitate replacement of the original equipment axles, including CV joints. Even with these upgrades, steering geometry can be compromised and bump steer, for example, can be introduced. Still further, the final drive ratio measured as available force at the thread surface of the oversize tires is reduced in proportion t...

Claims

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Application Information

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Patent Type & AuthorityApplications(United States)
IPC IPC(8): B60K17/04B60K17/354
CPCB60K17/043B60K17/354B60Y2200/124F16H57/023F16H57/031Y10T74/2186B60B35/001B60K17/303F16H57/022F16H2057/02043
InventorSHIRLEY, GRANT I.
OwnerSUPERATV LLC