Portable clean air cart
First Claim
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1. A portable clean air cart having an interior to house and transport at least one work piece in an environment segregated from the environment external to the cart interior, the portable clean air cart comprising:
- a housing that defines an accessible substantially airtight storage compartment for storing sensitive items being moved from one clean air environment to another clean air environment while passing through a lesser clean air environment, and an air managing and air filtration system for continuously circulating air within and through the storage compartment and removing particulates from air circulated into the storage compartment to ensure that the chamber is clean and not stagnant.
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Abstract
A self-contained transport cart provides a clean air environment to an interior compartment thereof for sensitive products being moved from one clean air environment to another clean air environment while passing through a lesser clean air environment. An air managing system and air filtration system therefor continuously circulates air within the cart and removes particulates from air drawn forced into the interior compartment to ensure that that the compartment air is both clean and not stagnant.
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Citations
20 Claims
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1. A portable clean air cart having an interior to house and transport at least one work piece in an environment segregated from the environment external to the cart interior, the portable clean air cart comprising:
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a housing that defines an accessible substantially airtight storage compartment for storing sensitive items being moved from one clean air environment to another clean air environment while passing through a lesser clean air environment, and an air managing and air filtration system for continuously circulating air within and through the storage compartment and removing particulates from air circulated into the storage compartment to ensure that the chamber is clean and not stagnant. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A portable cart for housing and transporting at least one work piece in a clean air environment segregated from the environment external to the cart, the portable clean air cart being self-contained and comprising:
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a housing that defines an accessible substantially airtight storage compartment having a clean air environment for storing and moving sensitive items being moved between clean air environments while passing through less clean air environments, said storage compartment including an inlet and outlet, respectively, for receiving and passing air into and out of said compartment, said housing including;
a first region for receiving and presenting circulated air to said air inlet, a second region for receiving air expelled from said air outlet, a third region for passing air from said second region to said first region, an air managing and air filtration system for continuously circulating air within and through the storage compartment and removing particulates from air circulated into the storage compartment to ensure that the compartment is clean and not stagnant, including air control means for providing a generally uniform airflow between the inlet and outlet of the storage compartment, including a fan, and an air filter, said fan for circulating air inside the housing and presenting air at a desired velocity pressure to said air filter and provide a positive pressure in the compartment to obviate and expel stagnant air from the compartment, and said air filter being juxtaposed with said air inlet for removing contaminants from air received from the fan and prior to being circulated into said compartment, an access door for permitting user access to said storage compartment, said access door being movable between an open and a closed air tight sealed relation with the storage compartment, wherein should the access door be left ajar, the fan will force air outwardly of the compartment and inhibit contaminated air from entering the compartment, means for connecting the fan to a source of electrical power, comprising a DC battery, an inverter, and appropriate cabling for connecting the fan to the battery or to an external source of AC electricity, and means for detecting pressure drop, wherein to determine if the filter is remaining effective or needs to be changed.
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Specification