Mobile vacuum apparatus for collection of liquid or semi-liquid materials
AssigneeNuhn Industries Ltd.
InventorDennis Nuhn
Life of this patent
Estimating the term…
Abstract
The apparatus comprises a vacuum tank with a front-mounted collection means thereunder The collection means is a V-shaped scraper with a height adjustable suction inlet at the apex thereof. The collection means has a pair of laterally adjustable pivoting wings for varying its width to correspond to that of an alley or gutter. The suction inlet may be equipped with a snorkel to introduce a small quantity of air as an aid in entraining thick-consistency materials. A blower vac is used to both draw air into and blow air through the vacuum tank. A valve means comprising a pair of oppositely oriented check valves is used to alternate flow paths between a lowered rearward exhaust during collection and an elevated intake during tank discharge.
Claims25
A mobile vacuum apparatus for collection of liquid or semi-liquid materials, the apparatus comprising:
- a) a frame having a front and rear;
- b) a set of wheels mounted under the frame;
- c) a vacuum tank for receiving collected liquid or semi-liquid materials, the vacuum tank having a vacuum inlet in a front wall thereof and two or more vacuum outlets in fluid communication with one another spaced apart along a top thereof;
- d) a collection means comprising a scraping element mounted under the front of the frame, the collection means in fluid communication with the vacuum inlet;
- e) a discharge outlet at a rear of the tank;
- and,
- f) a blower vac selectively capable of either drawing air from the vacuum tank through the vacuum outlets to thereby create a vacuum in the tank or blowing air into the vacuum tank through the vacuum outlets to thereby expel the collected liquid or semi-liquid materials therefrom under pressure through the discharge outlet.
A mobile vacuum apparatus for collection of liquid or semi-liquid materials, the apparatus comprising:
- a) a frame having a front and rear;
- b) a set of wheels mounted under the frame;
- c) a vacuum tank for receiving collected liquid or semi-liquid materials, the vacuum tank having a vacuum inlet at in front wall thereof and a vacuum outlet at a top thereof;
- d) a collection means comprising a scraping element mounted under the front of the frame, the collection means in fluid communication with the vacuum inlet;
- e) a discharge outlet rearward of the collection means;
- f) a blower vac selectively capable of either drawing air from the vacuum tank through the vacuum outlet to thereby create a vacuum in the tank or blowing air into the vacuum tank to thereby expel the collected liquid or semi-liquid materials therefrom under pressure through the discharge outlet;
- and,
- g) a valve means for directing air to a blower vac exhaust located beneath the frame when drawing air from the vacuum tank and for supplying air from a separate elevated blower vac intake located above the frame when blowing air into the vacuum tank.
Dependencies are inferred from the claim text.