Patent 5403232 Issued on April 4, 1995. Estimated Expiration Date: May 10, 2013. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
A ventilation system is provided for communicating ventilation air through a modular furniture arrangement, such as open office partition panel systems or the like. The ventilation system includes an air source, and a collapsible duct connected to the air source. The collapsible duct can be routed through interior spaces in partition panels in a collapsed state to facilitate routing and installation. After installation, the collapsible duct can be inflated for use, at which time the collapsible duct inflates to a maximum size to minimize resistance to air flow. Multiple secondary openings distribute the ventilation air in the collapsible duct to various worksurfaces as desired. A pressure relief valve is attached to the collapsible duct to prevent over-pressurization of the collapsible duct.
Other References
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May 10, 2013. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
