High-security fill cap for underground storage tanks
US4351446A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 20, 1981 |
| Grant date | Sep 28, 1982 |
| Priority date | — |
| Expiry date | Jul 20, 2001 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T70/5761
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A high-security fill cap is adapted for releasable attachment to the open end of a fill pipe, connected to an underground fuel storage tank or the like. The fill cap comprises an annular cap, a plurality of latches pivotally mounted on the cap for movement between latched positions engaging the pipe and unlatched positions disengaging the pipe, an actuating mechanism, including a handle, for moving the latches between their latched and unlatched positions in response to reciprocal movement of the handle, and a key lock secured centrally within the handle to selectively rotate a cam plate thereof between its locked and unlocked positions beneath the cap.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.