Vacuum insulated structures

Details Vacuum insulated structures Vacuum insulated structures

2008-05-20

2008-05-20

Stashick, Anthony (Department: 3781)

Receptacles

Receptacle having means to facilitate maintaining contents...

Thermally insulated receptacle

Reexamination Certificate

active

07374063

ABSTRACT:
An article includes walls defining an insulating space therebetween and a vent forming an exit for gas molecules during evacuation of the space. A distance separating the walls is variable in a portion adjacent the vent such that gas molecules are directed towards the vent imparting a greater probability of molecule egress than ingress such that deeper vacuum is developed without requiring getter material. The variable-distance portion may be formed by converging walls. Alternatively, a portion of one of the walls may be formed such that a normal line at any location within that portion is directed substantially towards a vent opening in the other wall.

REFERENCES:
patent: 2666979 (1954-01-01), Van Dusen
patent: 3265236 (1966-08-01), Gibbon et al.
patent: 4055268 (1977-10-01), Barthel

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