Patent US3708823A successfully refreshed from Google Patents.
US3708823A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Street and parking lot cleaner attachment for vehicles
Assignee: Individual
•
Filing: 1969-03-03
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Granted: 1973-01-09
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Expires: 1989-03-03
Abstract
Abstract The bed of a pickup truck supports a refuse container having an inlet conduit from the outlet of a suction fan mounted rearward of the container. The screened air outlet of the container includes a scrubbing chamber adapted to contain water for removing dust from the exhaust air. The fan inlet communicates with a suction head which is vertically adjustable relative to a street or parking lot to be cleaned, by controls operable from the driver''s compartment of the truck.
Inventors
- 👤 B Bell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 23:53
CPC Classifications
A; A47; A47L; A47L11/00; A47L11/40; A47L9/00; A47L9/10; A47L9/18; A47L9/182; E; E01; E01H; E01H1/00; E01H1/08; E01H1/0827; E01H1/0836
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
188 words
Street and parking lot cleaning apparatus, comprising a. a frame removably supported on a vehicle and having a portion extending rearwardly beyond the end of the vehicle, b. a hollow housing defining a refuse collecting chamber mounted on the portion of the frame overlying the vehicle, c. a fan housing supported by the rearward portion of the frame and having a vacuum inlet and an air outlet, d. a rotary fan in the fan housing, e. drive means supported by the frame and connected to the fan for rotating the latter, f. duct means communicating the air outlet with the collecting chamber, g. a vacuum head housing having an inlet facing downward and an outlet facing the inlet of the fan housing, h. means operatively connecting the vacuum head housing to the rearward portion of the frame for vertical adjustment, i. flexible conduit means communicating the vacuum head housing outlet with the fan housing inlet, and j. support means on the vacuum head housing adapted to engage a street or the like to be cleaned for positioning the vacuum head housing inlet in operative position adjacent the street.
Claim 2
Dependent Claim
188 words
Street and parking lot cleaning apparatus, comprising a. a frame removably supported on a vehicle and having a portion extending rearwardly beyond the end of the vehicle, b. a hollow housing defining a refuse collecting chamber mounted on the portion of the frame overlying the vehicle, c. a fan housing supported by the rearward portion of the frame and having a vacuum inlet and an air outlet, d. a rotary fan in the fan housing, e. drive means supported by the frame and connected to the fan for rotating the latter, f. duct means communicating the air outlet with the collecting chamber, g. a vacuum head housing having an inlet facing downward and an outlet facing the inlet of the fan housing, h. means operatively connecting the vacuum head housing to the rearward portion of the frame for vertical adjustment, i. flexible conduit means communicating the vacuum head housing outlet with the fan housing inlet, and j. support means on the vacuum head housing adapted to engage a street or the like to be cleaned for positioning the vacuum head housing inlet in operative position adjacent the street.
Claim 3
Dependent Claim
72 words
The apparatus of claim 1 wherein the hollow housing also defines a dust scrubbing chamber separated from the refuse collecting chamber, and passageway means communicates the refuse collecting chamber with the dust scrubbing chamber, the passageway means including a duct in the dust scrubbing chamber extending downward from the top thereof and terminating above the bottom thereof, the dust scrubbing chamber being adapted to contain water to a level below said duct.
Claim 4
Dependent Claim
56 words
The apparatus of claim 1 including extensible jack means, jack mounting bracket means adapted to be attached to a vehicle, and jack engaging bracket means operatively secured to the frame and arranged for engagement by the jack means during extension of the latter for elevating the entire rearward portion of the apparatus relative to the vehicle.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-01-09 | 1976-07-10 | 1977-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-09 | 1980-07-10 | 1981-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-09 | 1984-07-10 | 1985-01-09 | $7700.00 | Window Closed / Lapsed |