Isothermally measured tire gauge
US5142904A · kind A · utility
Inventor
Key dates
| Filing date | Jun 25, 1991 |
| Grant date | Sep 1, 1992 |
| Priority date | — |
| Expiry date | Jun 25, 2011 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60C23/04
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A tire gauge includes: a bellows telescopically mounted in an interior within a tire, a flexible indicator rod protruding outwardly from and secured with a piston member secured on a movable end portion of the bellows slidably held in a guiding tube either straightly or arcuately formed on an outer surface of the tire or combinably secured with a filling valve of the tire, so that the bellows will be subjected to a pressure inside a tire at a real temperature in the tire interior and the tire pressure will urge the bellows and the indicator rod outwardly to a final balanced position for showing a true pressure data which is measured isothermally inside the tire.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.