Vacuum generating device for sealing perishable products and method of use
US7594586B2 · kind B2 · utility
Inventor
Key dates
| Filing date | Aug 5, 2006 |
| Grant date | Sep 29, 2009 |
| Priority date | — |
| Expiry date | Apr 22, 2027 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D81/2038
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A vacuum sealing device comprises a lid having a rigid rim with a lower opening for receiving a dish, an impermeable elastic membrane peripherally affixed to the rigid rim for sealing the dish, and a valve-less air evacuator formed between the elastic membrane and the dish rim. The valve-less evacuator allows air to flow out of the dish when the lid is being pressed and becomes closed when the lid is released to cause said lid to rebound to form a vacuum in the dish. The rigid rim prevents lid deformation when the lid is pressed, thus enabling the vacuum formation. To facilitate lid removal, the device has a valve-less vacuum releaser comprising a finger-receiving chamber and a section of the elastic membrane located above the chamber and connected to the rigid rim for releasing the vacuum in the dish. To prevent vacuum loss during storage in freezer or fridge, the elastic membrane is sufficiently thinned prior to being affixed to the rigid rim. In use, one places the lid on a dish, forces air out of the dish via the air evacuator between a section of the elastic membrane and the dish rim by pressing the lid, and releases the lid to cause the air evacuator to close and vacuum to fo…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.