Hygienic pressure relief panel unit
US4821909A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 10, 1988 |
| Grant date | Apr 18, 1989 |
| Priority date | — |
| Expiry date | Mar 10, 2008 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16K17/16
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A hygienic pressure relief panel unit is provided which reliably ruptures at a predetermined pressure in order to prevent buildup of dangerous pressure within protected structure such as a vessel or the like defining an enclosed space, which prevents media passage therethrough before rupture, and which presents a sanitary, easily cleanable surface toward the vessel interior in order to inhibit accumulation of food particles, dust, or the like. The preferred panel unit includes a slotted stainless steel panel with the slots configured as a line of weakness for separation at a predetermined pressure, a sheet of PTFE material prepared on one side thereof to present an adhesive bonding surface, and an adhesive coupling the sheet and the panel, whereby the panel unit can be placed in a covering relationship with the vent opening of the protected structured in order to present the outer face of the PTFE sheet toward the vessel interior.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.