Patent US3816983A successfully refreshed from Google Patents.
US3816983A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric vacuum cleaner
Assignee: Panasonic Holdings Corp
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Filing: 1972-05-31
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Granted: 1974-06-18
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Expires: 1992-05-31
Abstract
Abstract An electric vacuum cleaner is provided which generally comprises a main body and a dust collection box removably mounted on said main body. A dust collection bag holder which holds the opening edge of a dust collection bag made of a polyethylene film or the like is (removably) attached to the opening of the dust collection box. The dust collection bag is held in a folded position in the cleaner, but when the dust and dirt collected in the dust collection box are disposed of, the dust collection box is removed from the main body and the bag is extended to receive the dust and dirt from the dust collection box. The bag may be easily disposed by discarding in a garbage can or the like in a sanitary manner.
Inventors
- 👤 K Sawada
- 👤 E Yoneda
- 👤 S Kajikawa
- 👤 R Yasunaga
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 01:05
CPC Classifications
A; A47; A47L; A47L9/00; A47L9/10; A47L9/102; A47L9/14; A47L9/1409; A47L9/149
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
156 words
An electric vacuum cleaner comprising: a. a main body having an electric motor driven fan and an outlet; b. a dust collection box for collection of dust removably connected to said main body and having an inlet, a dust collection chamber, and an opening defining a dust outlet communicating with said dust chamber; c. said dust collection box and main body defining an air duct extending from said inlet to said outlet by way of said motor driven fan; d. a filter positioned across the flow path in said air duct and being removably fixed to said dust collection box; e. a ring-like bag holding body; and f. a substantially impermeable dust collection bag having an open end detachably held by said ring like bag holding body to the said opening for removal of collected dust in said dust collection box, said bag being folded when said dust collection box is connected to said main body.
Claim 2
Dependent Claim
156 words
An electric vacuum cleaner comprising: a. a main body having an electric motor driven fan and an outlet; b. a dust collection box for collection of dust removably connected to said main body and having an inlet, a dust collection chamber, and an opening defining a dust outlet communicating with said dust chamber; c. said dust collection box and main body defining an air duct extending from said inlet to said outlet by way of said motor driven fan; d. a filter positioned across the flow path in said air duct and being removably fixed to said dust collection box; e. a ring-like bag holding body; and f. a substantially impermeable dust collection bag having an open end detachably held by said ring like bag holding body to the said opening for removal of collected dust in said dust collection box, said bag being folded when said dust collection box is connected to said main body.
Claim 3
Dependent Claim
28 words
An electric vacuum cleaner as set forth in claim 1 comprising a handle on said bag holding body for facilitating the removal of said holder from said box.
Claim 4
Dependent Claim
46 words
An electric vacuum cleaner as set forth in claim 1 comprising a rotatable handle on said bag holding body for facilitating the removal of said bag holding body from said dust collection box, and a dust collection bag retaining member formed integral with said rotatable handle.
Claim 5
Dependent Claim
56 words
An electric vacuum cleaner as set forth in claim 1 wherein said bag holding body comprises pivotally mounted inner and outer frame members whereby said outer frame member may be fitted over said inner frame member, and whereby the opening edge of said dust collection bag may be held between said inner and outer frame members.
Claim 6
Dependent Claim
60 words
An electric vacuum cleaner as set forth in claim 1 wherein said dust collection bag holder comprises inner and outer frame members pivotally affixed to each other whereby said outer frame member may be fitted over said inner frame member, and whereby the opening edge of said dust collection bag may be held between said inner and outer frame members.
Claim 7
Dependent Claim
32 words
An electric vacuum cleaner as set forth in claim 1 further comprising a cover on said dust collection box for releasably holding said dust collection bag in folded condition at said opening.
Claim 8
Dependent Claim
44 words
An electric vacuum cleaner as set forth in claim 6 wherein said cover is pivotally affixed to said dust collection box, comprising catch means for holding said cover in a position aligned with said opening, and release means for selectively releasing said catch means.
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) | 1977-06-17 | 1977-12-17 | 1978-06-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-17 | 1981-12-17 | 1982-06-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-17 | 1985-12-17 | 1986-06-18 | $7700.00 | Window Closed / Lapsed |