US4451951A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Engine-driven blower/dust collector
Assignee: Kioritz Corp
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Filing: 1982-09-15
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Granted: 1984-06-05
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Expires: 2002-09-15
Abstract
Abstract An engine driven blower/dust collector in which the suction opening and the discharge opening are arranged in the same plane in a side-by-side relation, and an air-switching slide pipe is provided to slide on the plane of these openings so as to permit the blower/dust collector to operate selectively as desired as a blower for blowing off and drifting together dust or the like and as a vacuum dust collector for collecting the dust or the like.
Inventors
- 👤 Masatoshi Satoh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 01:11
CPC Classifications
A; A47; A47L; A47L5/00; A47L5/12; A47L5/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
217 words
An engine-driven blower/dust collector comprising: an engine (1) having a shaft (2); a fan (3) directly connected to said shaft (2); a fan case (4) accommodating said fan (3); a partition wall (7) dividing the internal space of said fan case (4) in the axial direction of said shaft (2) into two sections (5 and 6) and having an opening (8) opposing to the central portion of said fan (3), the axially outer section (5) constituting a suction chamber for said fan (3) while the axially inner section (6) constituting a discharging chamber for said fan (3); an opening surface (11) having openings (9 and 10) arranged in a common plane and communicated with said suction chamber (5) and discharge chamber (6), respectively, said opening surface (11) being formed in the peripheral wall of said fan case (4); an air-switching slide pipe (12) slidable on said opening surface (11) in the axial direction of said shaft (2) so as to select one or both of said openings (9, 10) in said opening surface (11); and means for connecting a dust sucking pipe (13), dust collecting bag (15) or the like to nozzles (20 and 21) communicating to openings (9', 10') of said air-switching slide pipe (12) corresponding to said openings (9, 10) of said opening surface (11).
Claim 2
Dependent Claim
217 words
An engine-driven blower/dust collector comprising: an engine (1) having a shaft (2); a fan (3) directly connected to said shaft (2); a fan case (4) accommodating said fan (3); a partition wall (7) dividing the internal space of said fan case (4) in the axial direction of said shaft (2) into two sections (5 and 6) and having an opening (8) opposing to the central portion of said fan (3), the axially outer section (5) constituting a suction chamber for said fan (3) while the axially inner section (6) constituting a discharging chamber for said fan (3); an opening surface (11) having openings (9 and 10) arranged in a common plane and communicated with said suction chamber (5) and discharge chamber (6), respectively, said opening surface (11) being formed in the peripheral wall of said fan case (4); an air-switching slide pipe (12) slidable on said opening surface (11) in the axial direction of said shaft (2) so as to select one or both of said openings (9, 10) in said opening surface (11); and means for connecting a dust sucking pipe (13), dust collecting bag (15) or the like to nozzles (20 and 21) communicating to openings (9', 10') of said air-switching slide pipe (12) corresponding to said openings (9, 10) of said opening surface (11).
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-06-05 | 1987-12-05 | 1988-06-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-06-05 | 1991-12-05 | 1992-06-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-06-05 | 1995-12-05 | 1996-06-05 | $7700.00 | Window Closed / Lapsed |