Patent US3984330A successfully refreshed from Google Patents.
US3984330A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Washing machine drain filter
Assignee: Individual
•
Filing: 1975-07-15
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Granted: 1976-10-05
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Expires: 1995-07-15
Abstract
Abstract A washing machine drain filter including a cage with a top having a drain tube connection and bore through the top, a bottom, an oversize filter bag inside the cage connected with the bore, and means for detaching the cage from the top; further embodiments include a plural drain tube connection-single bag filter and an enclosed cage model with an additional drain tube connection in the bottom for standpipe use.
Inventors
- 👤 Louis B. Nichols
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 20:35
CPC Classifications
B; B01; B01D; B01D29/00; B01D29/11; B01D29/13; B01D29/23; B01D29/232
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
153 words
A filter for washing machine drains comprising: a top having washing-machine drain connection structure and a downward extension thereof with a bore communicating therewith, a bottom portion, a cage circumferentially spaced around said downward extension and having a bottom forming an enclosure with the top, means for opening the enclosure, a limp filter-bag having a mouth, means for sealing the mouth of the limp filter-bag in communication with said bore, the limp filter-bag having a longitudinal dimension greater than the distance from the means for sealing to said cage bottom, the lower end portion of said limp filter-bag resting slackly on said cage bottom, and means adapting the filter for use with a standpipe, including: said top and bottom portion being larger in transverse dimension than the cage, a tubular member encompassing the cage and connecting the top and bottom portion, and a drain connection having a bore passing through said bottom portion.
Claim 2
Dependent Claim
153 words
A filter for washing machine drains comprising: a top having washing-machine drain connection structure and a downward extension thereof with a bore communicating therewith, a bottom portion, a cage circumferentially spaced around said downward extension and having a bottom forming an enclosure with the top, means for opening the enclosure, a limp filter-bag having a mouth, means for sealing the mouth of the limp filter-bag in communication with said bore, the limp filter-bag having a longitudinal dimension greater than the distance from the means for sealing to said cage bottom, the lower end portion of said limp filter-bag resting slackly on said cage bottom, and means adapting the filter for use with a standpipe, including: said top and bottom portion being larger in transverse dimension than the cage, a tubular member encompassing the cage and connecting the top and bottom portion, and a drain connection having a bore passing through said bottom portion.
Claim 3
Dependent Claim
13 words
A filter as recited in claim 1, wherein the tubular member is transparent.
Claim 4
Dependent Claim
37 words
A filter as recited in claim 2, wherein the downward extension has a plurality of perforations therein and a closed bottom proximate the cage bottom, and wherein the cage has a plurality of external longitudinal flow guides.
Claim 5
Dependent Claim
15 words
A filter as recited in claim 3, wherein the cage has convoluted cylindrical-shape sidewall structure.
Claim 6
Dependent Claim
21 words
A filter as recited in claim 4, wherein the top has an annular flange pendant therefrom concentric with said downward extension.
References Cited (Backward Citations)
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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) | 1979-10-05 | 1980-04-05 | 1980-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-10-05 | 1984-04-05 | 1984-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-10-05 | 1988-04-05 | 1988-10-05 | $7700.00 | Window Closed / Lapsed |