US3841067A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric vacuum cleaner
Assignee: Mitsubishi Electric Corp
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Filing: 1973-09-04
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Granted: 1974-10-15
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Expires: 1993-09-04
Abstract
Abstract The disclosed electric cleaner includes a filter drum produced by shaping a corrugated piece of fine filter sheet into a hollow, general circular cylinder, and a dusting unit disposed within the drum. The dusting unit includes one vibratile strip radially disposed in each wave on the corrugated piece and a coiled member rotatable about the longitudinal axis of the drum to successively flip the vibratile strips to vibrate the filter drum. Alternatively the dusting unit may include a beater movable along the filter axis to resiliently impart an impulse to the filter drum to vibrate it and a striker rotatable about the filter axis to strike the radially innermost portion of the drum.
Inventors
- 👤 S Kato
- 👤 I Tayama
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:31
CPC Classifications
A; A47; A47L; A47L9/00; A47L9/10; A47L9/12; A47L9/127; A47L9/20; B; B01; B01D; B01D46/00; B01D46/24; B01D46/2403; B01D46/2411; B01D46/42; B01D46/4227; B01D46/52; B01D46/521; B01D46/66; B01D46/74; B01D46/76; B01D2267/00; B01D2267/40; B01D2279/00; B01D2279/55
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
146 words
An electric cleaner device comprising, in combination, a main body including a suction port and an exhaust port and having an electrically operated blower disposed therin, filter means disposed in said main body to filter out dust particles contained in a stream of air sucked into the main body during the operation of said electrically operated blower, said filter means including a filter drum closed at one end and open at the other communicating with the blower produced by folding a flat piece of fine filter sheet into a plurality of continuous waves and then shaping the corrugated piece of filter sheet into a hollow, general circular cylinder, said filter sheet being prepared by forming a fibrous material, and dusting means disposed within the interior of said filter drum to vibrate the filter and remove dust particles adhering to the filtration surface of said filter drum.
Claim 2
Dependent Claim
146 words
An electric cleaner device comprising, in combination, a main body including a suction port and an exhaust port and having an electrically operated blower disposed therin, filter means disposed in said main body to filter out dust particles contained in a stream of air sucked into the main body during the operation of said electrically operated blower, said filter means including a filter drum closed at one end and open at the other communicating with the blower produced by folding a flat piece of fine filter sheet into a plurality of continuous waves and then shaping the corrugated piece of filter sheet into a hollow, general circular cylinder, said filter sheet being prepared by forming a fibrous material, and dusting means disposed within the interior of said filter drum to vibrate the filter and remove dust particles adhering to the filtration surface of said filter drum.
Claim 3
Dependent Claim
111 words
An electric cleaner device as claimed in claim 1, wherein said dusting means includes a plurality of rectangular vibratile strips radially disposed within said filter drum one for each wave so that the vibratile strip has a radially outermost edge abutting against the associated wave valley as viewed internally of the filter drum and a radially innermost edge radially projecting beyond the associated wave crest as viewed internally of the filter drum, and a dusting resilient member within said filter drum rotatable about the longitudinal axis of the filter drum, said dusting member being capable of successively flipping said radially innermost edges of said vibratile strips during the rotational movement thereof.
Claim 4
Dependent Claim
63 words
An electric cleaner device as claimed in claim 1, wherein said dusting means includes a spring loaded beater within said filter drum movable along the longitudinal axis of the filter drum to resiliently impart an impulse to said filter drum and a striker rotatable about the longitudinal axis of the filter drum to successively strike the radially innermost portions of said filter drum.
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) | 1977-10-14 | 1978-04-15 | 1978-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-14 | 1982-04-15 | 1982-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-14 | 1986-04-15 | 1986-10-15 | $7700.00 | Window Closed / Lapsed |