Patent US4718140A successfully refreshed from Google Patents.
US4718140A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fireplace blower and vacuum
Assignee: Individual
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Filing: 1986-03-10
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Granted: 1988-01-12
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Expires: 2006-03-10
Abstract
Abstract A combination vacuum cleaner and blower is described which is particularly adapted for use as an accessory to a fireplace. The apparatus of this invention is a portable hand-held vacuum/blower which is controlled by a reversible fan motor. When operating in a first direction, air is sucked into the vacuum preferably to clean up ashes around the fireplace. A valve is provided to prevent air from being sucked in the blower. When operated in a second direction air is blown out the blower exhaust and can be used to blow air on a fire. A second valve is provided to prevent air from being blown out of the vacuum inlet.
Inventors
- 👤 Henry Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 19:34
CPC Classifications
A; A47; A47L; A47L5/00; A47L5/12; A47L5/22; A47L5/24; A47L5/14
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
139 words
An apparatus adapted to alternately, but not concurrently, exhaust air and create a vacuum comprising: a front portion including an inlet leading into a vacuum chamber and an outlet extending from an exhaust chamber; said vacuum chamber including a valve adapted to permit air to flow into and not out of said inlet said chamber further including a filter; said exhaust chamber including a valve adapted to permit air to flow out of and not into said exhaust chamber; fan means mounted within said apparatus and operated by a reversible motor; said fan means operable to suck air into said vacuum chamber through said filter when rotated by said motor in a first direction; said fan means further operable to blow air through said exhaust chamber out of said outlet when rotated by said motor in a second direction.
Claim 2
Independent Claim
139 words
An apparatus adapted to alternately, but not concurrently, exhaust air and create a vacuum comprising: a front portion including an inlet leading into a vacuum chamber and an outlet extending from an exhaust chamber; said vacuum chamber including a valve adapted to permit air to flow into and not out of said inlet said chamber further including a filter; said exhaust chamber including a valve adapted to permit air to flow out of and not into said exhaust chamber; fan means mounted within said apparatus and operated by a reversible motor; said fan means operable to suck air into said vacuum chamber through said filter when rotated by said motor in a first direction; said fan means further operable to blow air through said exhaust chamber out of said outlet when rotated by said motor in a second direction.
Claim 3
Independent Claim
147 words
An apparatus adapted to alternately exhaust air and create a vacuum comprising: a front portion and a back portion, said front portion having an inlet and an outlet, a first centrifugal fan adapted to suck air into said inlet when rotated in a first direction; means to filter air sucked into said inlet; a second centrifugal fan adapted to blow air out said outlet when rotated in a second direction; means to rotate said first fan in said first direction; means to rotate said second fan in said second direction; wherein said means to rotate said first fan in said first direction comprises a reversible motor rotating in a first direction; and wherein said means to rotate said second fan in a second direction comprises said reversible motor rotating in a second direction; said apparatus further comprising means to alternate the direction of rotation of said motor.
Claim 4
Independent Claim
147 words
An apparatus adapted to alternately exhaust air and create a vacuum comprising: a front portion and a back portion, said front portion having an inlet and an outlet, a first centrifugal fan adapted to suck air into said inlet when rotated in a first direction; means to filter air sucked into said inlet; a second centrifugal fan adapted to blow air out said outlet when rotated in a second direction; means to rotate said first fan in said first direction; means to rotate said second fan in said second direction; wherein said means to rotate said first fan in said first direction comprises a reversible motor rotating in a first direction; and wherein said means to rotate said second fan in a second direction comprises said reversible motor rotating in a second direction; said apparatus further comprising means to alternate the direction of rotation of said motor.
Claim 5
Dependent Claim
66 words
The apparatus claimed in claim 2 further comprising a first chamber extending from said inlet to said means to filter air; and means to prevent air from exiting said inlet comprising a plate hingedly attached to a top wall of said first chamber and adapted to block said chamber when air pressure outside of said chamber is not greater than the air pressure within said chamber.
Claim 6
Dependent Claim
26 words
The apparatus claimed in claim 3 comprising a second chamber leading to said outlet; means to prevent air from entering said second chamber through said outlet.
Claim 7
Dependent Claim
16 words
The apparatus claimed in claim 2 wherein said means to filter air comprises a fireproof filter.
Claim 8
Independent Claim
173 words
An apparatus adapted to alternately exhaust air and create a vacuum comprising: a front portion and a back portion, said front portion having an inlet and an outlet, means to suck air into said inlet comprising a motor rotating a first fan in a first direction; means to prevent air from passing out said inlet; means to filter air sucked into said inlet; means to blow air out of said outlet comprising said motor rotating a second fan in a second direction; means to alternate the direction of said motor; a first chamber extending from said inlet to said means to filter air and a second chamber extending from said means to blow air to said outlet; means to direct air sucked through said first chamber to said first fan thereby sucking air into said inlet when said first fan is rotated in said first direction; and means to direct air blown by said second fan through said second chamber to said outlet when said second fan is rotated in said second direction.
Claim 9
Independent Claim
173 words
An apparatus adapted to alternately exhaust air and create a vacuum comprising: a front portion and a back portion, said front portion having an inlet and an outlet, means to suck air into said inlet comprising a motor rotating a first fan in a first direction; means to prevent air from passing out said inlet; means to filter air sucked into said inlet; means to blow air out of said outlet comprising said motor rotating a second fan in a second direction; means to alternate the direction of said motor; a first chamber extending from said inlet to said means to filter air and a second chamber extending from said means to blow air to said outlet; means to direct air sucked through said first chamber to said first fan thereby sucking air into said inlet when said first fan is rotated in said first direction; and means to direct air blown by said second fan through said second chamber to said outlet when said second fan is rotated in said second direction.
Claim 10
Dependent Claim
53 words
The apparatus claimed in claim 6 wherein said means to prevent air from passing out said inlet comprises a plate hingedly attached to a top wall of said first chamber and adapted to block said chamber when air pressure outside of said chamber is not less than the air pressure within said chamber.
Claim 11
Dependent Claim
16 words
The apparatus claimed in claim 7 wherein said means to filter air comprises a fireproof filter.
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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) | 1991-01-11 | 1991-07-13 | 1992-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-01-11 | 1995-07-13 | 1996-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-01-11 | 1999-07-13 | 2000-01-12 | $7700.00 | Window Closed / Lapsed |