Pressure gauge for vehicle tires
US6374666B1 · kind B1 · utility
Inventors
Key dates
| Filing date | Mar 10, 2000 |
| Grant date | Apr 23, 2002 |
| Priority date | — |
| Expiry date | Mar 10, 2020 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60C23/0496
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A tire pressure gauge apparatus for securing to a vehicle tire valve stem mounted to a tire valve stem port in a vehicle tire, the valve stem including a tubular stem body containing a valve assembly having a valve opening mechanism, the stem body having a stem connection end fitting sealingly to the tire valve stem port, and having a stem air receiving end, the apparatus including a housing for placement in fluid communication with received air from within the tire contained within the tire valve stem; a structure for opening the valve opening mechanism; and a pressure equilibration structure dividing the housing into a received air chamber and a biasing air chamber and including a pressure indicator element, the pressure equilibration structure and the pressure indicator element being movable relative to the housing, and the pressure indicator element displaying a pressure reading of received air from within the tire which varies with the position of the pressure equilibration structure relative to the housing; so that alteration of the pressure of received air within the received air chamber from the valve stem causes movement of the equilibration structure within the housing to…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.