Patent US5546070A successfully refreshed from Google Patents.
US5546070A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for monitoring the air pressure of a tire in motor vehicles with a sensor
Assignee: Bayerische Motoren Werke AG
•
Filing: 1994-09-02
•
Granted: 1996-08-13
•
Expires: 2014-09-02
Abstract
Abstract In a device for monitoring tire air pressure in motor vehicles with a sensor that delivers a signal corresponding to the deformation of the tire, and with an evaluating unit that detects the signal from the sensor, the sensor is so designed such that it delivers an electrical pulse corresponding to the degree of deformation of a tire, especially deformation during a footprint pass. The evaluating unit determines the degree of deformation as a function of the height of the amplitude of the pulse or the evaluating unit determines the degree of deformation as a function of the ratio of the duration of the pulse to the duration of one wheel revolution.
Inventors
- 👤 Manfred Ellmann
- 👤 Hans-Rudolf Hein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:31
CPC Classifications
B; B60; B60C; B60C23/00; B60C23/06; B60C23/064; B60C23/02; B60C23/04; B60C23/0408; B60C23/041; B60C23/0411
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
89 words
A device for monitoring a tire air pressure in a tire on a motor vehicle, comprising: a sensor operatively arranged with respect to the tire for delivering a signal corresponding to a deformation of the tire; an evaluating unit arranged in the motor vehicle for receiving said signal from the sensor; wherein said sensor delivers an electrical pulse corresponding to a degree of the deformation of a tire during a footprint pass; wherein the evaluating unit continuously determines various degrees of deformation as a function of said electrical pulse.
Claim 2
Independent Claim
89 words
A device for monitoring a tire air pressure in a tire on a motor vehicle, comprising: a sensor operatively arranged with respect to the tire for delivering a signal corresponding to a deformation of the tire; an evaluating unit arranged in the motor vehicle for receiving said signal from the sensor; wherein said sensor delivers an electrical pulse corresponding to a degree of the deformation of a tire during a footprint pass; wherein the evaluating unit continuously determines various degrees of deformation as a function of said electrical pulse.
Claim 3
Dependent Claim
27 words
A device according to claim 1, wherein the evaluating unit determines said degree of the deformation as a function of an amplitude height of said electrical pulse.
Claim 4
Dependent Claim
39 words
A device according to claim 1, wherein said evaluating unit determines said degree of the deformation as a function of a ratio of a duration of the electrical pulse to a duration of one wheel revolution of said tire.
Claim 5
Dependent Claim
18 words
A device according to claim 1, wherein said electrical pulse is delivered per wheel revolution of the tire.
Claim 6
Dependent Claim
18 words
A device according to claim 2, wherein one electrical pulse is delivered per wheel revolution of the tire.
Claim 7
Dependent Claim
18 words
A device according to claim 3, wherein one electrical pulse is delivered per wheel revolution of the tire.
Claim 8
Dependent Claim
20 words
A device according to claim 4, wherein a number of pulses is determined over a service life of the tire.
Claim 9
Dependent Claim
26 words
A device according to claim 1, wherein said sensor is mounted on or in an area of the tire that is deformed during said footprint pass.
Claim 10
Dependent Claim
26 words
A device according to claim 2, wherein said sensor is mounted on or in an area of the tire that is deformed during said footprint pass.
Claim 11
Dependent Claim
26 words
A device according to claim 3, wherein said sensor is mounted on or in an area of the tire that is deformed during said footprint pass.
Claim 12
Dependent Claim
13 words
A device according to claim 1, wherein said sensor is a piezo element.
Claim 13
Dependent Claim
13 words
A device according to claim 2, wherein said sensor is a piezo element.
Claim 14
Dependent Claim
13 words
A device according to claim 3, wherein said sensor is a piezo element.
Claim 15
Dependent Claim
30 words
A device according claim 1, wherein said evaluating unit is permanently mounted in the motor vehicle and further comprising means for wirelessly transmitting the electrical pulse to said evaluating unit.
Claim 16
Dependent Claim
30 words
A device according claim 11, wherein said evaluating unit is permanently mounted in the motor vehicle and further comprising means for wirelessly transmitting the electrical pulse to said evaluating unit.
Claim 17
Dependent Claim
21 words
A device according to claim 1, wherein said sensor is connected to a transmitter for wireless transmission of the electrical pulse.
Claim 18
Dependent Claim
21 words
A device according to claim 11, wherein said sensor is connected to a transmitter for wireless transmission of the electrical pulse.
Claim 19
Dependent Claim
28 words
A device according to claim 1, wherein said sensor includes a piezo element and a transmitter, said piezo element being coupled with said transmitter to supply electricity thereto.
Claim 20
Dependent Claim
28 words
A device according to claim 2, wherein said sensor includes a piezo element and a transmitter, said piezo element being coupled with said transmitter to supply electricity thereto.
Claim 21
Dependent Claim
28 words
A device according to claim 3, wherein said sensor includes a piezo element and a transmitter, said piezo element being coupled with said transmitter to supply electricity thereto.
References Cited (Backward Citations)
US4220907A
Cited
US4210898A
Cited
DE3016337A1
Cited
EP0197813A1
Cited
US4862486A
Cited
DE3916176A1
Cited
US5274355A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1999-08-13 | 2000-02-12 | 2000-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-08-13 | 2004-02-12 | 2004-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-08-13 | 2008-02-12 | 2008-08-13 | $7700.00 | Window Closed / Lapsed |