Hand-held tire pressure gauge and method for assisting a user to determine whether a tire pressure is within a target range using a hand-held tire pressure gauge

• US 7,251,992 B2
• Filed: 02/04/2005
• Issued: 08/07/2007
• Est. Priority Date: 10/17/2003
• Status: Active Grant

• Current Assignee: Measurement Ltd (Measurement Ltd., Inc.)
• Original Assignee: Measurement Ltd (Measurement Ltd., Inc.)
• Inventors: Petrucelli, Steven
• Primary Examiner(s): Lefkowitz; Edward
• Assistant Examiner(s): JENKINS, JERMAINE L
• Application Number:
  US11/051,650
• Publication Number:
  US 20050138999A1
• Time in Patent Office: 914 Days
• Field of Search: 73146-1468, 340444-447
• US Class Current: 73/146
• CPC Class Codes: G01L 17/00 Devices or apparatus for measuring tyre pressure or the pressure in other inflated bodies
• CPC Class Codes: G01L 19/08 Means for indicating or recording, e.g. for remote indication
• CPC Class Codes: G01L 19/083 electrical
• CPC Class Codes: G01L 19/086 for remote indication

Abstract

A handheld tire pressure gauge including: a display; a pressure sensor; a memory; a processor being operatively coupled to the display, pressure sensor and memory; and, code being stored in the memory and operable by the processor to: retrieve at least one value indicative of a target tire pressure from the memory, determine a pressure sensed by the pressure sensor, and, cause the display to present information indicative of the target tire pressure and sensed pressure.

Claims

1. A handheld tire pressure gauge comprising:

a housing adapted to fit in a user'"'"'s hand, the housing containing;

a display comprising a plurality of indicators, wherein a first of the indicators is indicative of a low tire pressure condition, a second of the indicators is indicative of a target tire pressure condition and a third of the indicators is indicative of a high tire pressure condition;

a pressure sensor;

a memory;

a processor being operatively coupled to said display, pressure sensor and memory; and

,

code being stored in said memory and operable by said processor to;

retrieve at least one value indicative of the target tire pressure condition from said memory, determine a pressure sensed by said pressure sensor, and selectively activate one of the plurality of indicators.

2. The gauge of claim 1, wherein said code is further operable by said processor to store said at least one value indicative of the target tire pressure.

3. The gauge of claim 2, wherein said code is further operable by said processor to increment and decrement said at least one value indicative of the target pressure.

4. The gauge of claim 2, wherein said at least one value indicative of the target tire pressure comprises a plurality of values each indicative of a target tire pressure.

5. The gauge of claim 1, wherein said code is further operable by said processor to cause said display to indicate whether said measured pressure is below a threshold value indicative of a low pressure condition.

6. The gauge of claim 1, wherein said code is further operable by said processor to cause said display to indicate whether said measured pressure is above a threshold value indicative of a high pressure condition high.

7. The gauge of claim 1, wherein said code is further operable by said processor to cause said display to indicate whether said measured pressure substantially matches said target tire pressure condition.

8. The gauge of claim 1, further comprising a lighting element.

9. The gauge of claim 8, wherein said lighting element comprises an LED.

10. The gauge of claim 9, wherein said LED is selectively operable by said processor.

11. The gauge of claim 8, wherein said display is backlit with a color substantially matching a color of said lighting element.

12. The gauge of claim 1, wherein said display further comprises a graphical indicator of which of a plurality of tires on a vehicle is being measured.

13. The gauge of claim 1, wherein said code is further operable by said processor to store a value indicative of said single pressure in said memory.

14. The gauge of claim 1, further comprising an analog to digital converter coupled to said pressure sensor and processor.

15. The gauge of claim 1, wherein said pressure sensor comprises a plurality of strain gauges.

16. The gauge of claim 1, wherein said display further presents a target tire pressure and the sensed pressure.

17. The gauge of claim 16, wherein said display concurrently presents the target tire pressure and sensed pressure.

18. A method for assisting a user to determine whether a tire pressure is within a target range using a handheld digital tire pressure gauge having a housing adapted to fit in a user'"'"'s hand, comprising:

retrieving at least one value indicative of said target range;

comparing a measured pressure to said target range using said at least one value; and

,

selectively activating one of a plurality of indicators dependently upon the comparing, wherein a first of the indicators is indicative of a low tire pressure condition, a second of the indicators is indicative of a target tire pressure condition and a third of the indicators is indicative of a high tire pressure condition.

19. The method of claim 18, further comprising prompting said user to input said at least one value indicative of said target range.

20. The method of claim 18, further comprising selectively activating a light.

21. The method of claim 18, further comprising indicating which of a plurality of tires to check.

22. The method of claim 18, further comprising storing said measured pressure.

23. A handheld tire pressure gauge comprising:

a housing adapted to fit in a hand of a user, the housing containing a display;

a pressure sensor;

a memory;

a processor being operatively coupled to said display, pressure sensor and memory; and

, code being stored in said memory and operable by said processor to;

retrieve a first value indicative of a target first tire pressure from said memory, determine a first tire pressure sensed by said pressure sensor, and selectively activate one of a plurality of indicators dependently upon the retrieved first value and sensed first pressure, wherein a first of the indicators is indicative of a low tire pressure condition, a second of the indicators is indicative of a target tire pressure condition and a third of the indicators is indicative of a high tire pressure condition; and

,

retrieve a second value indicative of a target second tire pressure from said memory, determine a second tire pressure sensed by said pressure sensor, and selectively activating one of the plurality of indicators dependently upon the second retrieved value and sensed second pressure.

24. The gauge of claim 23, wherein said code is further operative by said processor to cause said display to selectively prompt a user to measure a front tire pressure and a rear tire pressure.

25. The gauge of claim 23, wherein said code is further operable by said processor to increment and decrement said first and second values.

26. The gauge of claim 23, wherein said display further presents said target first and second values and sensed first and second pressures.

27. The gauge of claim 26 wherein said first and second values and sensed first and second pressures are concurrently presented, respectively.

28. A handheld tire pressure gauge comprising:

a housing adapted to fit in a hand of a user, the housing containing;

a pressure sensor;

a processor operatively coupled to a display, said pressure sensor, and a memory; and

a user interface in communication with said processor for enabling display of information indicative of;

a sensed tire pressure determined by said pressure sensor in response to user activation, and wherein said display comprises a first graphical indicator for identifying a high pressure condition where said sensed pressure is above a first threshold value associated with said target pressure value retrieved from said memory;

a second graphical indicator for identifying low pressure condition where said sensed pressure is below a second threshold value less than the first threshold value associated with said target pressure value retrieved from said memory; and

a third graphical indicator for identifying nominal pressure condition where said sensed pressure is between said first and second threshold values.

29. The gauge of claim 28, wherein said user interface further comprises a vehicle indicator selection input for enabling user selection of a given one of a plurality of vehicle indicators, each corresponding to a given vehicle, said processor responsive to said input for retrieving from said memory those target values corresponding to said selected vehicle for processing and display to the user.

30. The gauge of claim 29, wherein said information displayed comprises:

a) said sensed tire pressure determined by said pressure sensor; and

b) one or more target pressure values retrieved from said memory corresponding to the sensed tire for said selected vehicle.