US3984894A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sweeping vehicles for sweeping roads and other surfaces
Assignee: Individual
•
Filing: 1975-04-15
•
Granted: 1976-10-12
•
Expires: 1995-04-15
Abstract
Abstract A sweeping vehicle for sweeping roads and other surfaces comprises a suction mouth located behind a sweeping brush. The inlet portion of the suction mouth is inclined relative to the surface to be swept and faces in a direction towards the brush. Air guide means extending from a trailing edge of the suction mouth approximately parallel to the surface, acts to direct air towards the suction mouth. The arrangement of the suction mouth and air guide means prevents particles of dirt from being discharged from the zone of the suction mouth by a vortex within the suction mouth.
Inventors
- 👤 Albert Brock
- 👤 Karl-Heinz Splisteser
- 👤 Werner Dobbrunz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 18:32
CPC Classifications
E; E01; E01H; E01H1/00; E01H1/08; E01H1/0827; E01H1/0836; E01H1/0845
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
108 words
In a sweeping vehicle, a sweeping and collecting assembly, said assembly comprising means defining a suction mouth having a front wall and a rear wall, said mouth having an inlet facing in the direction of travel of the vehicle and being inclined at an acute angle with respect to the surface to be swept, air guide means located behind the inlet with respect to the direction of travel of the vehicle, said guide means being arranged to extend generally parallel to the said surface, and said guide means extending rearwardly from said inlet, and resilient mounting means mounting the guide means on the rear wall of the mouth.
Claim 2
Dependent Claim
108 words
In a sweeping vehicle, a sweeping and collecting assembly, said assembly comprising means defining a suction mouth having a front wall and a rear wall, said mouth having an inlet facing in the direction of travel of the vehicle and being inclined at an acute angle with respect to the surface to be swept, air guide means located behind the inlet with respect to the direction of travel of the vehicle, said guide means being arranged to extend generally parallel to the said surface, and said guide means extending rearwardly from said inlet, and resilient mounting means mounting the guide means on the rear wall of the mouth.
Claim 3
Dependent Claim
23 words
A vehicle according to claim 1, further comprising adjustable means securing the guide means in a selected position relative to the said surface.
References Cited (Backward Citations)
US2131398A
Cited
US3862469A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-10-12 | 1980-04-12 | 1980-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-10-12 | 1984-04-12 | 1984-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-10-12 | 1988-04-12 | 1988-10-12 | $7700.00 | Window Closed / Lapsed |