US4355434A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cannister type suction cleaner
Assignee: Individual
•
Filing: 1980-11-10
•
Granted: 1982-10-26
•
Expires: 2000-11-10
Abstract
Abstract A suction cleaner for sucking ashes and hot coals from a wood burning stove containing an impeller and motor unit and having a filtering member of fire resistant material and impervious to ashes covering the orifices to the impeller and a perforated metal member surrounding the filtering member for preventing hot coals from engaging the filtering member.
Inventors
- 👤 Dean W. Gongwer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:28
CPC Classifications
A; A47; A47L; A47L7/00; A47L7/0071; F; F23; F23J; F23J1/00
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
168 words
In a suction cleaner of the type having an open top metal container, sidewalls and a bottom wall, a metal cover closing the open top of the container, a suction creating impeller disposed within the container, a housing enclosing the impeller and provided with an orifice, and an electric motor drivingly connected to the impeller, the container being provided with an air inlet opening and an air discharge opening, the improvement comprising, a perforated metal member adjacent to the orifice in the housing enclosing the impeller, and a filtering member of fire resistant material interposed between the perforated member and the impeller, the space between the inner surface of the sidewalls and the perforated member being adapted to receive hot coals and ashes entering through the air inlet opening, the perforated member restricting passage of the hot coals through the perforated member, the filtering member being pervious to air and preventing passage of ashes through the orifice of the housing enclosing the impeller and through the discharge opening.
Claim 2
Dependent Claim
168 words
In a suction cleaner of the type having an open top metal container, sidewalls and a bottom wall, a metal cover closing the open top of the container, a suction creating impeller disposed within the container, a housing enclosing the impeller and provided with an orifice, and an electric motor drivingly connected to the impeller, the container being provided with an air inlet opening and an air discharge opening, the improvement comprising, a perforated metal member adjacent to the orifice in the housing enclosing the impeller, and a filtering member of fire resistant material interposed between the perforated member and the impeller, the space between the inner surface of the sidewalls and the perforated member being adapted to receive hot coals and ashes entering through the air inlet opening, the perforated member restricting passage of the hot coals through the perforated member, the filtering member being pervious to air and preventing passage of ashes through the orifice of the housing enclosing the impeller and through the discharge opening.
Claim 3
Dependent Claim
43 words
The cleaner of claim 1, wherein the impeller and the motor are fixedly secured to the metal cover and are spaced from the bottom wall of the container, the perforated member abuts against the bottom wall and circumposes the impeller and the motor.
Claim 4
Dependent Claim
48 words
The cleaner of claim 1, wherein the housing is secured to the metal cover, the filtering member is a bag impervious to ashes but pervious to air and covers the orifice of the housing enclosing the impeller, the open end of the bag being secured to the housing.
Claim 5
Dependent Claim
21 words
The cleaner of claim 1, wherein the perforated member is a metal screen having openings less than one-eighth of an inch.
Claim 6
Dependent Claim
160 words
A suction cleaner for sucking ashes and hot coals from a stove and comprising a metal container having sidewalls and a pair of end walls, one of the end walls being removably secured to the sidewalls for emptying the contents of the container, a suction creating impeller, an electric motor drivingly connected to the impeller and secured to the container, the container being provided with an air inlet opening and an air discharge opening, a housing enclosing the impeller and the motor and provided with an orifice communicating with the impeller, the housing being secured to the end wall removably secured to the sidewalls, and a fire resistant filtering member covering the orifice, the filtering member being impervious to the ashes and the hot coals whereby upon operation of the cleaner air containing ashes and hot coals is sucked into the container and filtered air is discharged from the cleaner while the ashes and hot coals remain in the cleaner.
Claim 7
Dependent Claim
160 words
A suction cleaner for sucking ashes and hot coals from a stove and comprising a metal container having sidewalls and a pair of end walls, one of the end walls being removably secured to the sidewalls for emptying the contents of the container, a suction creating impeller, an electric motor drivingly connected to the impeller and secured to the container, the container being provided with an air inlet opening and an air discharge opening, a housing enclosing the impeller and the motor and provided with an orifice communicating with the impeller, the housing being secured to the end wall removably secured to the sidewalls, and a fire resistant filtering member covering the orifice, the filtering member being impervious to the ashes and the hot coals whereby upon operation of the cleaner air containing ashes and hot coals is sucked into the container and filtered air is discharged from the cleaner while the ashes and hot coals remain in the cleaner.
Claim 8
Dependent Claim
43 words
The suction cleaner of claim 5, wherein a perforated member is spaced from and encloses the filtering member for restricting passage of hot coals through the perforated member thereby preventing the hot coals from engaging the filtering member during operation of the cleaner.
Claim 9
Dependent Claim
25 words
The cleaner of claim 6, wherein the housing is disposed in the container, and the perforated member is a metal screen surrounding the filtering member.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-10-25 | 1986-04-26 | 1986-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-10-25 | 1990-04-26 | 1990-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-10-25 | 1994-04-26 | 1994-10-26 | $7700.00 | Window Closed / Lapsed |