ACCUFLATE

• US 6,711,955 B1
• Filed: 01/25/2001
• Issued: 03/30/2004
• Est. Priority Date: 01/25/2001
• Status: Active Grant

• Current Assignee: William Edwin Jr. Wilkerson
• Original Assignee: William Edwin Jr. Wilkerson
• Inventors: Wilkerson, William Edwin Jr.
• Primary Examiner(s): Lefkowitz, Edward
• Assistant Examiner(s): ALLEN, ANDRE J
• Application Number:
  US09/769,607
• Time in Patent Office: 1,160 Days
• Field of Search: 731/46, 731/462, 731/463, 731/464, 731/465, 731/468, 73/37, 73/40, 73/48, 73/49, 137/228, 340/442, 340/445
• US Class Current: 73/708
• CPC Class Codes: G01L 17/00 Devices or apparatus for measuring tyre pressure or the pressure in other inflated bodies
• CPC Class Codes: G01L 19/0092 Pressure sensor associated with other sensors, e.g. for measuring acceleration or temperature G01L9/025, G01L9/045, G01L9/065, G01L9/085, G01L9/105, G01L9/125, G01L19/02, G01L19/04 take precedence; measuring two or more variable G01D21/02; temperature sensors with pressure compensation G01K1/26

Abstract

Accuflate measures the temperature and pressure of a tire and by processing this information through an Allen Bradley Micrologix and comparing this information to the ambient air temperature and the recommended inflation pressure allows the operator to inflate the tire to a SET-POINT PRESSURE so that when the tire has cooled it will be at the recommended operating level. This “HOT-TIRE INFLATION” allows the operator the opportunity to accurately inflate tires during an operational day when the opportunity to inflate cold is not available.

Claims

1. A portable device for measuring air pressure in a tire and for inflating the tire, the device comprising:

an air pressure gauge mounted on the portable device and adapted to measure air pressure in the tire;

an air hose mounted on the portable device and adapted to deliver air to the tire;

a first and second temperature sensor mounted on the portable device, the first sensor adapted to read tire temperature and the second sensor adapted to read ambient air temperature; and

a processor connected to and adapted to receive information from the gauge, the hose and the sensors, adapted to compare the temperature and pressure of the tire with a recommended pressure at the ambient air temperature, and to instruct the hose to deliver air to the tire.

2. A device as described in claim 1, wherein the temperature sensor comprises an infrared sensor for reading the tire temperature.

3. A device as described in claim 1, wherein the processor is further adapted to store tire air pressure information.

4. A device as described in claim 1, wherein the processor further comprises sensor means for detecting an inflation error.

5. A method of monitoring and inflating a tire comprising the steps of:

providing an air pressure gauge, an air hose, temperature sensors and a processor connected to the gauge, hose and sensors,

measuring the actual air pressure of the tire with the air pressure gauge,

measuring both tire temperature and ambient temperature with the temperature sensors,

calculating with the processor a recommended air pressure for the tire taking into account the tire temperature and actual air pressure, and

inflating the tire using the air hose until the actual air pressure is the recommended air pressure.