Overfill protection device
US6138709A · kind A · utility
Inventor
Key dates
| Filing date | Jan 27, 1998 |
| Grant date | Oct 31, 2000 |
| Priority date | — |
| Expiry date | Jan 27, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/7478
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A overfill protection device includes a first tubular member, a cylindrical piston slidably fitted within the first tubular member, a spring arranged within the first tubular member and fitted over an intermediate portion of the piston, a first and second O-rings fitted in the first and second neck portions of the piston respectively, a second tubular member having an upper portion having a cylindrical recess open at a top and engaged with the first tubular member, a plug arranged within the second tubular member and located under the piston, a float rod having a cam plate at an upper end thereof, and a float fixedly connected with a lower end of the float rod, whereby no gas will be allowed to flow through the overfill protection device when the pressure within the gas tank exceeds a predetermined level.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.