Binary inner tube for tire
US5385191A · kind A · utility
Inventors
Key dates
| Filing date | Nov 26, 1993 |
| Grant date | Jan 31, 1995 |
| Priority date | — |
| Expiry date | Nov 26, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T152/10594
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A pneumatically-inflated inner tube having two compartments such that if one compartment is damaged and deflates, the other compartment may be inflated without removing the tire. The compartments inflate independently of each other using separate valves; each compartment has its own valve for inflation. When inflated, the two compartments surround the same annular axis. The two embodiments described have primary and secondary compartments. In the first embodiment, each compartment is a discrete component wherein the secondary compartment is disposed inside the primary compartment. The compartments connect where the valve of the secondary compartment projects through an aperture in the primary compartment. In the second embodiment, the two compartments form an integral unit. The compartments share a common surface such that one compartment is formed inside the other compartment. The primary compartment inflates using a valve disposed on the common surface which terminates at an aperture open to the primary compartment. The secondary compartment inflates using a valve disposed on the common surface in which the aperture opens to the secondary compartment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.