US4195413A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for measuring depth of tire tread groove in a tire
Assignee: Bridgestone Corp
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Filing: 1978-12-20
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Granted: 1980-04-01
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Expires: 1998-12-20
Abstract
Abstract A device for measuring a depth of a tread groove in a tire comprises a sensor for measuring the depth of the tread groove as an electrical analogue quantity, an analogue-digital converter for converting the analogue quantity into a digital quantity, a calculation and control section for storing the digital quantities and making a given calculation in accordance with a command from exterior, and an indication section for indicating a calculated result.
Inventors
- 👤 Yoshifumi Haraguchi
- 👤 Hiroshi Fukuyama
- 👤 Shu Kamiguchi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 06:56
CPC Classifications
G; G01; G01B; G01B7/00; G01B7/26
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
145 words
A device for measuring a depth of a tread groove in a tire, comprising: a sensor for measuring the depth of the tread groove formed in a tread portion of a tire as an electrical analogue quantity, an analogue-digital converter for converting said analogue quantity from said sensor into a digital quantity, a calculation and control section for storing a plurality of said digital quantities and making a given calculation against the stored digital quantities in accordance with a command from exterior, an indication section for indicating a result calculated in said calculation and control section, and external preset members electrically connected to the calculation and control section for presetting a body number of a vehicle provided with tires to be measured, a location number of a tire to be measured in said vehicle, and the number of measurements to be made on said tire.
Claim 2
Independent Claim
145 words
A device for measuring a depth of a tread groove in a tire, comprising: a sensor for measuring the depth of the tread groove formed in a tread portion of a tire as an electrical analogue quantity, an analogue-digital converter for converting said analogue quantity from said sensor into a digital quantity, a calculation and control section for storing a plurality of said digital quantities and making a given calculation against the stored digital quantities in accordance with a command from exterior, an indication section for indicating a result calculated in said calculation and control section, and external preset members electrically connected to the calculation and control section for presetting a body number of a vehicle provided with tires to be measured, a location number of a tire to be measured in said vehicle, and the number of measurements to be made on said tire.
Claim 3
Independent Claim
139 words
A device for measuring a depth of a tread groove in a tire, comprising: a sensor for measuring the depth of the tread groove formed in a tread portion of a tire as an electrical analogue quantity, an analogue-digital converter for converting said analogue quantity from said sensor into a digital quantity, a calculation and control section for storing a plurality of said digital quantities and making a given calculation against the stored digital quantities in accordance with a command from exterior, an indication section for indicating a result calculated in said calculation and control section, a member electrically connected to the calculation and control section for presetting a location of a tire to be measured among a plurality of tires mounted on a vehicle, and a remote control switch for sequentially changing the preset value of said member.
Claim 4
Independent Claim
139 words
A device for measuring a depth of a tread groove in a tire, comprising: a sensor for measuring the depth of the tread groove formed in a tread portion of a tire as an electrical analogue quantity, an analogue-digital converter for converting said analogue quantity from said sensor into a digital quantity, a calculation and control section for storing a plurality of said digital quantities and making a given calculation against the stored digital quantities in accordance with a command from exterior, an indication section for indicating a result calculated in said calculation and control section, a member electrically connected to the calculation and control section for presetting a location of a tire to be measured among a plurality of tires mounted on a vehicle, and a remote control switch for sequentially changing the preset value of said member.
Claim 5
Independent Claim
139 words
A device for measuring a depth of a tread groove in a tire, comprising: a sensor for measuring the depth of the tread groove formed in a tread portion of a tire as an electrical analogue quantity, an analogue-digital converter for converting said analogue quantity from said sensor into a digital quantity, a calculation and control section for storing a plurality of said digital quantities and making a given calculation against the stored digital quantities in accordance with a command from exterior, an indication section for indicating a result calculated in said calculation and control section, a member electrically connected to the calculation and control section for presetting the number of measurements made on each tire, and means in said calculation control section for automatically making a given calculation only after the preset number of measurements has been made.
Claim 6
Independent Claim
139 words
A device for measuring a depth of a tread groove in a tire, comprising: a sensor for measuring the depth of the tread groove formed in a tread portion of a tire as an electrical analogue quantity, an analogue-digital converter for converting said analogue quantity from said sensor into a digital quantity, a calculation and control section for storing a plurality of said digital quantities and making a given calculation against the stored digital quantities in accordance with a command from exterior, an indication section for indicating a result calculated in said calculation and control section, a member electrically connected to the calculation and control section for presetting the number of measurements made on each tire, and means in said calculation control section for automatically making a given calculation only after the preset number of measurements has been made.
Claim 7
Independent Claim
61 words
A device as claimed in claims 1, 2 or 3, wherein said sensor comprises a casing provided with a base member at its lower surface, a scale slidably arranged in the front side of said casing, a slide bar arranged parallel to said scale and sliding together therewith, and a variable resistor having a contact piece connected to said slide bar.
Claim 8
Independent Claim
57 words
A device as claimed in claims 1, 2 or 3, wherein said sensor comprises a casing provided with a base member at its lower surface, a slide bar slidably arranged in said casing, a spring for displacing said slide bar downward at ordinary times, and a variable resistor having a contact piece connected to said slide bar.
Claim 9
Independent Claim
42 words
A device as claimed in claims 1, 2 or 3, wherein said device further comprises a display section for displaying a measured value, which is measured by said sensor and supplied from said analogue-digital converter, as a depth of a tread groove.
Claim 10
Independent Claim
49 words
A device as claimed in claims 1, 2 or 3 wherein between said analogue-digital converter and said calculation and control section is arranged a manual operation switch for supplying the measured value from said sensor, after the visual confirmation, to said calculation and control section and storing it therein.
Claim 11
Dependent Claim
17 words
A device as claimed in claim 7, wherein said manual operation switch is a remote control switch.
Claim 12
Dependent Claim
17 words
A device as claimed in claim 8, wherein said remote control switch is assembled into said sensor.
Claim 13
Independent Claim
29 words
A device as claimed in claims 1, 2 or 3, wherein said indication section comprises a printer for printing out the calculated result in said calculation and control section.
Claim 14
Dependent Claim
32 words
A device as claimed in claim 3, wherein said calculation and control section comprises an operational member capable of making a given calculation at the measured number smaller than the preset number.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-04-01 | 1983-10-01 | 1984-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-04-01 | 1987-10-01 | 1988-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-04-01 | 1991-10-01 | 1992-04-01 | $7700.00 | Window Closed / Lapsed |