Device for indicating low tire pressure
US4646673A · kind A · utility
Assignees
Inventor
Key dates
| Filing date | Sep 9, 1983 |
| Grant date | Mar 3, 1987 |
| Priority date | — |
| Expiry date | Sep 9, 2003 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/3662
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
The device for indication of low pressure in tire inflation includes a hose which can be connected to the valve stem of the tire for communicating with the compressed air therein. A body is connected to and is in communication with the interior of the hose for receiving compressed air therefrom. An indicator is pivotably attached to the body remote from the hose. An actuating mechanism is disposed in the body and is responsive to the pressure of the compressed air for selectively holding the indicator in a first position during normal operation, and releasing the indicator, upon a drop in the pressure of the compressed air below a predetermined level, to allow the indicator to pivot and assume a second, low-pressure position. A spring is provided for effecting the pivotal movement of the indicator to the second, low-pressure position upon release of the indicator by the actuating mechanism.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.