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Identification of Tire Production Data During Wheel Service Procedures

IP.com Disclosure Number: IPCOM000243934D
Publication Date: 2015-Oct-28
Document File: 9 page(s) / 2M

Publishing Venue

The IP.com Prior Art Database

Abstract

A vehicle service system adapted for vehicle wheel assembly service configured to identify tire age or production data upon receipt of either a complete DOT code sequence associated with a tire or a portion of the DOT code sequence containing the tire production information The identified tire age or production data is displayed to the operator by the vehicle service system together with any suitable warnings or notifications which may vary with the identified tire age or production data An accessible data store optionally associated with the vehicle service system stores identified tire age or production data together with information linked to a specific vehicle customer or repair order

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   Identification of Tire Production Data During Wheel Service Procedures

October 28, 2015

ABSTRACT

  A vehicle service system, adapted for vehicle wheel assembly service, configured to identify tire age or production data upon receipt of either a complete DOT code sequence associated with a tire, or a portion of the DOT code sequence containing the tire production information. The identified tire age or production data is displayed to the operator by the vehicle service system, together with any suitable warnings or notifications which may vary with the identified tire age or production data. An accessible data store optionally associated with the vehicle service system stores identified tire age or production data together with information linked to a specific vehicle, customer, or repair order.

DETAILED DESCRIPTION

  The present paper describes vehicle service systems configured for carrying out vehicle service procedures related to vehicle wheel assemblies, such as wheel alignment systems, wheel balancer systems, and tire changing systems, and in particular to vehicle service systems which are configured to receive coded input representative of a tire manufacture date from which the age of the tire can be determined.

  Vehicle tires, when manufactured, are marked on at least one sidewall with a coded sequence of letters and numbers by the manufacturer, as seen in Figure 1 and Figure 2. Referred to as the tire Department of Transportation (DOT) code or Tire Identification Number (TIN), the sequence identifies production information associated with the tire, including the production date. Current regulations (since the year 2000) require that the DOT code or TIN begin with the letters "DOT" and be followed by a 10- 12 digit alpha-numeric sequence which can be used to identify the manufacturer, production plant, tire size, tire production batch, and the tire production date.

  As seen in Figure 2, the production date is encoded as a four-digit number at the end of the coded sequence. The first two digits represent the week of manufacture, and the second two digits represent the year of manufacture. Prior regulations only required the production date to be encoded as a three-digit number as seen in Figure 1, with the first two digits representing the week of manufacture, and the third digit representing the year of manufacture within the current decade. No uniform designation for the specific decade is required, as it is assumed that tires will not be in service for more than 10 years.

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  As tires age, the various rubber compounds and internal layers can lose elasticity and strength. Older tires are susceptible to sudden blowouts or failures due to this degradation. Most tire and automobile manufacturers suggest tire replacement once a tire reaches a given age, regardless of remaining tread or external appearance. In general, tires which exceed 10 years in age are not recommended on automotive vehicles. Accordingly, th...