Flexible or portable closure – partition – or panel – Plural and/or with rigid closure – Roll type
Patent
1976-01-26
1977-08-02
Caun, Peter M.
Flexible or portable closure, partition, or panel
Plural and/or with rigid closure
Roll type
E06B 908
Patent
active
040390195
ABSTRACT:
An apparatus for insulating against conductive, convective, and radiant heat transmission comprises three or more mutually parallel non-transparent sheets. The sheets may be attached to a retracting device from which they can be drawn to extend in mutually parallel relation and cover a building opening such as a window or onto which they can be retracted to uncover the opening. A number of resilient spacers in the form of collapsible devices are mounted within the apparatus to separate each pair of adjacent sheets and, thus, define a dead air space therebetween.At least one of the sheets has a highly radiation reflective surface located to face on a dead air space. Importantly, the collapsible devices are designed so as not to abrade or otherwise harm the reflective surface. The combination of these dead air spaces with the highly radiation reflective sheet surfaces results in an apparatus having extremely low emissivity that effectively impedes radiant heat transfer. The dead air spaces also effectively impede conductive and convective heat transfer.
REFERENCES:
patent: 2247634 (1941-07-01), Houston
patent: 2324423 (1943-07-01), Pidgeon
patent: 2852143 (1958-09-01), Taber
patent: 3231006 (1966-01-01), Fisher et al.
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