초록 ▼

A built-in vacuum system which has improved vacuum drawing capability, an improved filtering system, and an improved vacuum hook-up arrangement. The built-in vacuum apparatus comprises in combination: (a) a container having therein at least one vacuum inlet port and one vacuum outlet port; (b) means

A built-in vacuum system which has improved vacuum drawing capability, an improved filtering system, and an improved vacuum hook-up arrangement. The built-in vacuum apparatus comprises in combination: (a) a container having therein at least one vacuum inlet port and one vacuum outlet port; (b) means for drawing a vacuum upon the vacuum inlet port, and exhausting drawn air through the vacuum outlet port; and (c) a particle filtering medium which is so disposed within the container that none of the effective filtering surface of the filtering medium contacts the container when a vacuum is drawn upon the system by the vacuum drawing means. The apparatus includes removable air-tight vacuum inlet post fittings and detachable attachments for installing one or more vacuum drawing means in the apparatus.

대표청구항 ▼

A built-in vacuum apparatus comprising in combination: (a) a hollow container having in the walls thereof at least one air vacuum inlet prot and one air vacuum outlet port; (b) air vacuum drawing means communicating with the inlet port and the outlet port for drawing a vacuum upon the vacuum inlet p

A built-in vacuum apparatus comprising in combination: (a) a hollow container having in the walls thereof at least one air vacuum inlet prot and one air vacuum outlet port; (b) air vacuum drawing means communicating with the inlet port and the outlet port for drawing a vacuum upon the vacuum inlet port, and exhausting drawn air through the vacuum outlet port; (c) a first hollow open ended particle filtering medium which is open at one end and closed at the opposite end and is disposed within the container between the inlet port and the vacuum drawing means, the open end of the filtering medium facing in the direction of the inlet means, the filtering means being connected by a filtering means suspension means in an airtight manner with the side walls of the container; (d) a second hollow open ended particle filtering medium which is open at one end and closed at the opposite end and is of slightly smaller dimensions than the first filtering medium, fits within the interior of the first filtering medium and has its open end facing in the same direction as the open end of the first filtering medium, the first and second particle filtering mediums being so positioned within the container by the filtering means suspension means that none of the effective filtering surface of the first and second filtering mediums contacts the walls of the container when a vacuum is drawn upon the system by the vacuum drawing means; and (e) a hollow cylindrically shaped air filter open at one end and closed at the opposite end which is positioned within the interior of the container between the first and second filter mediums, and the vacuum drawing means, the open end facing in the direction of the vacuum drawing means, and air passes from the exterior of the filter mediums into the interior of the air filter through the sidewall of the filter before being drawn by the vacuum drawing means through the outlet port.