Air-pressure monitoring device and malfunction-determination-threshold-value determination method
US-2015298513-A1 · Oct 22, 2015 · US
Tire pressure warning device
US11787240B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11787240-B2 |
| Application number | US-201817045792-A |
| Country | US |
| Kind code | B2 |
| Filing date | May 7, 2018 |
| Priority date | May 7, 2018 |
| Publication date | Oct 17, 2023 |
| Grant date | Oct 17, 2023 |
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- Title
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- Abstract
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Abstract
Official abstract text for this publication.
A tire air pressure warning device includes a tire air pressure sensor and at least one controller that warns a driver that a tire air pressure detected by the tire air pressure sensor has dropped to or below a first prescribed pressure. The at least one controller further notifies the driver is reduction in the tire air pressure upon determining that the tire air pressure has dropped to or below a second prescribed pressure, which is above the first prescribed pressure. The at least one controller further determines whether the tire air pressure has dropped to or below the second prescribed pressure based on when the tire air pressure is at or below the second prescribed pressure in an ignition switch on state, and whether the tire air pressure has dropped to or below the second prescribed pressure when the ignition switch is turned off.
First claim
Opening claim text (preview).
The invention claimed is: 1. A tire air pressure warning device comprising: a tire air pressure sensor; and at least one controller configured to issue a warning to warn a driver that a tire air pressure detected by the tire air pressure sensor has dropped to or below a first prescribed pressure, the at least one controller being further configured to determine whether the tire air pressure has dropped to or below a second prescribed pressure, which is above the first prescribed pressure, while in an ignition switch on state, and the at least one controller being further configured to notify the driver of a reduction in the tire air pressure upon determining that the tire air pressure sensor is at or below the second prescribed pressure while the ignition switch is turned off after also determining the tire air pressure was at or below the second prescribed pressure while in the ignition switch on state. 2. The tire air pressure warning device according to claim 1 , wherein the at least one controller includes a tire air pressure controller and a meter controller. 3. The tire air pressure warning device according to claim 1 , wherein the at least one controller is further configured to count a number of times that the tire air pressure was at or below the second prescribed pressure, and the at least one controller is further configured to determine that the pressure has dropped to or below the second prescribed pressure when the number counted exceeds a prescribed number of times. 4. The tire air pressure warning device according to claim 3 , wherein the at least one controller is further configured to issue the warning so as to indicate to the driver that the tire air pressure is low in response to the tire air pressure being detected to have dropped to or below the first prescribed pressure, and the at least one controller is further configured to prompt the driver to look at tire air pressure information as a notification of the tire air pressure being detected to have dropped to or below the second prescribed pressure while the ignition switch is turned off after also determining the tire air pressure was at or below the second prescribed pressure while in the ignition switch on state. 5. The tire air pressure warning device according to claim 1 , wherein the at least one controller is further configured to issue the warning so as to indicate to the driver that the tire air pressure is low in response to the tire air pressure being detected to have dropped to or below the first prescribed pressure, and the at least one controller is further configured to prompt the driver to look at tire air pressure information as a notification of the tire air pressure being detected to have dropped to or below the second prescribed pressure while the ignition switch is turned off after also determining the tire air pressure was at or below the second prescribed pressure while in the ignition switch on state.
Assignees
Inventors
Classifications
- B60C23/0405Primary
Mechanically generated visible signals, e.g. by using a gauge needle · CPC title
- B60C23/04Primary
mounted on the wheel or tyre · CPC title
Devices or apparatus for measuring tyre pressure or the pressure in other inflated bodies · CPC title
Signalling devices actuated by tyre pressure {(hand-held tyre pressure gauges G01L17/00)} · CPC title
transmitting the signals by non-mechanical means from the wheel or tyre to a vehicle body mounted receiver · CPC title
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- What does patent US11787240B2 cover?
- A tire air pressure warning device includes a tire air pressure sensor and at least one controller that warns a driver that a tire air pressure detected by the tire air pressure sensor has dropped to or below a first prescribed pressure. The at least one controller further notifies the driver is reduction in the tire air pressure upon determining that the tire air pressure has dropped to or bel…
- Who is the assignee on this patent?
- Nissan Motor
- What technology area does this patent fall under?
- Primary CPC classification B60C23/0405. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Oct 17 2023 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).