Seal for sanitary overpressure vent structure
US7587863B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 17, 2006 |
| Grant date | Sep 15, 2009 |
| Priority date | — |
| Expiry date | May 10, 2027 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16K17/0453
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A one piece flexible sanitary seal 16 of uniform cross-section is provided for over pressure vent structure that protects a confined space meeting hygienic standards. The seal 16 has an elongated body 38 provided with a central section 40, a C-shaped terminal end 42 having a main lug portion 46 and a secondary lug segment 48 that project away from each other with a cavity 50 therebetween, and a long tail portion 44 cooperating with the central section 40 to present a longitudinally extending angular groove 62. The seal 16 is adapted to be mounted between a vent membrane unit 14 and a frame component 18 of the vent structure. Lug portion 46 and lug segment 48 sealingly engage the inner surface of the vent membrane 14 inboard of a line of weakness therein defined by a series of slots. A rectangular projection 52 extends from the central section 40 in disposition to engage the vent membrane unit 14, outboard of the line of weakness. The main lug portion 46 and the secondary lug segment 48 of terminal end 42 are moveable toward and away from one another while remaining in tight sealing engagement with the vent membrane unit 14 during in and out cycling thereof. Frame component 18 is re…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.