US4792286A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Blower-vacuum apparatus
Assignee: JOHN DEERE CONSUMER PRODUCTS Inc
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Filing: 1987-07-23
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Granted: 1988-12-20
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Expires: 2007-07-23
Abstract
Abstract The invention is directed to an improved blower-vacuum apparatus or unity which relies on the judicious placement of the components to reduce or eliminate vibration and rotation forces thereby contributing greatly to operator comfort.
Inventors
- 👤 James Gassen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 16:10
CPC Classifications
A; A47; A47L; A47L5/00; A47L5/12; A47L5/22; A01; A01G; A01G20/00; A01G20/40; A01G20/43; A01G20/47; A47L5/14; A47L9/00; A47L9/22; F; F04; F04D; F04D25/00; F04D25/02; F04D25/08; F04D25/084
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
101 words
A blower-vacuum unit having a volute housing including a volute opening, a power unit, a centrifugal fan and a handle on the top of the housing, the handle having a rear section adapted to receive an operator's hand, the improvement comprising: a tangential volute opening having an axis which passes through the rear section of the handle, said power unity having a cylinder with a cylinder axis which is inclined 50 to 70 degrees from the axis of the volute opening and when said axis is projected to intercept the handle, said axis will intercept the rear portion of the handle.
Claim 2
Dependent Claim
101 words
A blower-vacuum unit having a volute housing including a volute opening, a power unit, a centrifugal fan and a handle on the top of the housing, the handle having a rear section adapted to receive an operator's hand, the improvement comprising: a tangential volute opening having an axis which passes through the rear section of the handle, said power unity having a cylinder with a cylinder axis which is inclined 50 to 70 degrees from the axis of the volute opening and when said axis is projected to intercept the handle, said axis will intercept the rear portion of the handle.
Claim 3
Dependent Claim
20 words
A unit as defined in claim 1 where the handle is substantially parallel to the axis of the volute opening.
Claim 4
Dependent Claim
29 words
A unit as defined in claim 1 where the handle is vertically aligned with the volute opening and both are situated over the center of gravity of the unit.
Claim 5
Dependent Claim
32 words
A blower-vacuum unit as defined in claim 1 where the centrifugal fan has a conical configuration and is located on the opposite side of the center of gravity from the power unit.
References Cited (Backward Citations)
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Cited
US1740918A
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US3266428A
Cited
US4318203A
Cited
US4288013A
Cited
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Cited
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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) | 1991-12-20 | 1992-06-20 | 1992-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-12-20 | 1996-06-20 | 1996-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-12-20 | 2000-06-20 | 2000-12-20 | $7700.00 | Window Closed / Lapsed |