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US 7,008,468 B2Granted
HEPA vacuum recovery system
OwnerKevin Asheinventor
Life of this patent
Estimating the term…
Abstract
A vacuum system is enclosed in a housing having two vertically spaced chambers, the lower one enclosing the vacuum generating motor means and the upper chamber defining the vacuum chamber and having therein prefilter and filter means as well as at least two vacuum ports to which vacuum wands are selectively attached, each port being sealed when not in use.
Claims11
A highly efficient multi-user, portable vacuuming system comprising:
- a housing defining upper and lower vertically spaced chambers separated by a substantially horizontal plate, at least one inlet port opening into said upper chamber and at least one outlet port leading from said lower chamber, and a port in said plate connecting said chambers;
- vacuum generating motor means mounted in said lower chamber and connected to said outlet port and said port in said plate
- filter means in said upper chamber between said at least one inlet port and said port in said plate, said filter means having prefilter means immediately adjacent said at least one inlet port whereby all air ingested by said system first passes through said pre filter means which removes substantially all of the large air borne particles, said pre filter means comprising disposable filter bags each capable of being detachable mounted on a respective inlet port.
A method for achieving highly efficient removal of air borne particulate material in a multi-user, portable vacuuming system comprising the steps of:
- providing a housing defining upper and lower vertically spaced chambers separated by a substantially horizontal plate, at least one inlet port opening into said upper chamber and at least one outlet port leading from said lower chamber, and a port in said plate connecting said chambers, vacuum generating motor means mounted in said lower chamber and connected to said outlet port and said port in said plate, filter means in said upper chamber between said inlet port and said port in said plate, means to seal each said inlet port when not in use;
- and
- sequentially passing the air ingested by said system through pre filter means, to remove the largest particulate material, secondary filter means, to remove further air borne particulate material, and HEPA filter means, whereby substantially all air borne particulate material is removed from the air and entrapped in the filters.
Dependencies are inferred from the claim text.