Self-sealing closure device for transport tank
US4192435A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 26, 1979 |
| Grant date | Mar 11, 1980 |
| Priority date | — |
| Expiry date | Mar 26, 1999 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D90/10
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A novel device for closing the dome of a tank with gravity and/or pneumatic discharge, comprising a closure cap member which is applied against a seat provided with a resilient sealing gasket, and a closure mechanism for holding the cap member on the seat, wherein the cap member comprises a protection cap provided with fixing means for the closure mechanism and a bearing surface whose surface is a surface of revolution and which is formed by at least one segment of a straight line and/or arc of a curve, wherein the seat comprises a support plate acting as an abutment for the bearing suface of the cap member, a resilient gasket which is loaded in bending by contact with the bearing surface of the cap member, and a co-operating flange for fixing the gasket on the support plate, and wherein the closure mechanism is operable with a low mechanical force. The novel dome closure device is self-cleaning, self-sealing, operable with a low force, capable of being automated and having a high degree of safety for the operator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.