GB970305A - Improvements relating to the testing of vehicle tyre pressures - Google Patents
Improvements relating to the testing of vehicle tyre pressuresInfo
- Publication number
- GB970305A GB970305A GB4461460A GB4461460A GB970305A GB 970305 A GB970305 A GB 970305A GB 4461460 A GB4461460 A GB 4461460A GB 4461460 A GB4461460 A GB 4461460A GB 970305 A GB970305 A GB 970305A
- Authority
- GB
- United Kingdom
- Prior art keywords
- tyre
- base
- load
- determining
- contact area
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C23/00—Devices for measuring, signalling, controlling, or distributing tyre pressure or temperature, specially adapted for mounting on vehicles; Arrangement of tyre inflating devices on vehicles, e.g. of pumps or of tanks; Tyre cooling arrangements
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L17/00—Devices or apparatus for measuring tyre pressure or the pressure in other inflated bodies
- G01L17/005—Devices or apparatus for measuring tyre pressure or the pressure in other inflated bodies using a sensor contacting the exterior surface, e.g. for measuring deformation
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
970, 305. Measuring pressure electrically; indicating apparatus. N. LAING. Dec. 29, 1960 [Dec. 29, 1959], No. 44614/60. Headings G1J, G1L and G1W. Apparatus for determining the internal pressure of a tyre 1 comprises means for determining a value dependent on the load on the tyre, means for determining a value dependent on the contact area between the tyre 1 and a base 2 and means for determining the pressure from these values. In one embodiment, Fig. 1, the load is measured by means of a displaceable base 2 connected through a lever 6 piston 9, piston 13 transfer lever 14 and transfer rod 21. The contact area is determined by the fluid displaced from within an elastic pad 25. This displacement operates a piston 28 to displace rod 21. Displacements of rod 21 due to load and contact area measurements are transmitted to a pivoted operating lever 15 to move a displaceable rack 17 to actuate a pointer 20. A dial may be provided, Fig. 7, which is divided into four quadrants and has lines 56, 57 to indicate the highest and lowest permissible pressures for each tyre. Alternatively the contact area value may be determined by a pad of hollow units, Fig. 2, between a resilient layer 44 and a solid base 46. In another embodiment, Fig. 5, the base comprises two condenser plates 32, 33 with a layer of resilient dielectric 34 between them. When a tyre 49 (Fig. 6) is located on the base, the dielectric is compressed and the capacitance increased by an amount approximately proportional to the area of contact, measured by the potential across the plates 32, 33 with constant current. The load is measured at 35 by a piezocrystal 35 or differential transformers 54, and the two signals are combined in a wattmeter-type instrument 40.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEL35030A DE1274904B (en) | 1959-12-29 | 1959-12-29 | Method for the indirect measurement of the internal pressure of air-filled vehicle tires |
Publications (1)
Publication Number | Publication Date |
---|---|
GB970305A true GB970305A (en) | 1964-09-16 |
Family
ID=7266911
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB4461460A Expired GB970305A (en) | 1959-12-29 | 1960-12-29 | Improvements relating to the testing of vehicle tyre pressures |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE1274904B (en) |
GB (1) | GB970305A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0046439A2 (en) * | 1980-08-20 | 1982-02-24 | The Goodyear Tire & Rubber Company | Method and apparatus for correlating tire inflation pressure and load |
EP0224804A1 (en) * | 1985-11-26 | 1987-06-10 | Interzeag AG | Tonometer for determining the internal pressure of eyes |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111998928B (en) * | 2020-07-24 | 2022-04-22 | 恒大新能源汽车投资控股集团有限公司 | Method and device for determining contact area of vehicle tire, and method and device for determining weight |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2051042A (en) * | 1931-01-21 | 1936-08-18 | William H Hendel | Tire pressure measuring device |
US2313156A (en) * | 1941-02-12 | 1943-03-09 | Jr George C Kratt | Method of inflating pneumatic tires to proper internal air pressure under load |
-
1959
- 1959-12-29 DE DEL35030A patent/DE1274904B/en active Pending
-
1960
- 1960-12-29 GB GB4461460A patent/GB970305A/en not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0046439A2 (en) * | 1980-08-20 | 1982-02-24 | The Goodyear Tire & Rubber Company | Method and apparatus for correlating tire inflation pressure and load |
EP0046439A3 (en) * | 1980-08-20 | 1984-05-02 | The Goodyear Tire & Rubber Company | Method and apparatus for correlating tire inflation pressure and load |
EP0224804A1 (en) * | 1985-11-26 | 1987-06-10 | Interzeag AG | Tonometer for determining the internal pressure of eyes |
Also Published As
Publication number | Publication date |
---|---|
DE1274904B (en) | 1968-08-08 |
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