US4403371A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Debris collecting device
Assignee: Komatsu Zenoah Co
•
Filing: 1981-04-28
•
Granted: 1983-09-13
•
Expires: 2001-04-28
Abstract
Abstract Improvements in air blower driven debris collecting devices are disclosed including interchangeable air driven dispenser attachments for dispensing liquids and powders dispersed in an air stream; a debris collector including a portable air blower, a hand held debris pick-up nozzle, and a free standing debris collecting container; and an improved housing construction for a portable blower wherein the air intake and engine exhaust ports are positioned so as not to interfere with the operator carrying the blower and having an integral air cleaner filter holder for the engine carburator.
Inventors
- 👤 Katsumi Kiyooka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:09
CPC Classifications
A; A47; A47L; A47L9/00; A47L9/10; A47L9/12; A47L9/122; A01; A01G; A01G20/00; A01G20/40; A01G20/43; A01G20/47; A47L5/00; A47L5/12; A47L5/22; A47L5/24; A47L5/26; A47L7/00; A47L7/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
138 words
In a debris collecting device of the type having a portable air blower unit, a blower conduit connected for directing the air stream from said blower to an air stream passage, and a debris intake conduit connected to said air stream passage such that air in said debris intake is entrained by said air stream in said air stream conduit whereby debris may be lifted from a ground surface into said intake conduit, said air stream passage having an exhaust end to which may be removably attached a debris collecting container, the improvement comprising an injection port for connection with a source of chemicals, said port opening into said debris intake conduit for injecting chemicals into said air stream, such that said debris collecting device may be converted to a chemical applicator upon removal of said collecting container.
Claim 2
Dependent Claim
138 words
In a debris collecting device of the type having a portable air blower unit, a blower conduit connected for directing the air stream from said blower to an air stream passage, and a debris intake conduit connected to said air stream passage such that air in said debris intake is entrained by said air stream in said air stream conduit whereby debris may be lifted from a ground surface into said intake conduit, said air stream passage having an exhaust end to which may be removably attached a debris collecting container, the improvement comprising an injection port for connection with a source of chemicals, said port opening into said debris intake conduit for injecting chemicals into said air stream, such that said debris collecting device may be converted to a chemical applicator upon removal of said collecting container.
References Cited (Backward Citations)
US751786A
Cited
US2026291A
Cited
DE517203C
Cited
US3808631A
Cited
US3704482A
Cited
US3922753A
Cited
US4290165A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-09-12 | 1987-03-14 | 1987-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-09-12 | 1991-03-14 | 1991-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-09-12 | 1995-03-14 | 1995-09-13 | $7700.00 | Window Closed / Lapsed |