Patent US4544011A successfully refreshed from Google Patents.
US4544011A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pleat screen
Assignee: DOWA SEISHI Co Ltd A CORP OF JAPAN
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Filing: 1983-07-01
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Granted: 1985-10-01
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Expires: 2003-07-01
Abstract
Abstract A pleat screen includes a screen sheet having a plurality of zig-zag pleats and vertically foldable and unfoldable by an operator cord. At least one tape extends vertically through the pleats. Holders are mounted on the tape in engagement with selected ones of the pleats for supporting, from below, the selected pleats to prevent the pleats from being lowered due to their own weight when the screen sheet is vertically unfolded.
Inventors
- 👤 Mamoru Sawamura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 17:00
CPC Classifications
E; E06; E06B; E06B9/00; E06B9/24; E06B9/26; E06B9/262; E06B2009/2625; Y; Y10; Y10T; Y10T428/00; Y10T428/17; Y10T428/24; Y10T428/24025
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
186 words
A pleat screen having a front side and a back side comprising: a screen having a plurality of pleats vertically foldable and unfoldable, each of said pleats having an upper portion and a lower portion and each having slits defined therein defining in said screen at least one vertically aligned row of slits; at least one tape, extending vertically along said screen between the upper and lower ends thereof and extending through said vertically aligned row of slits defined therein, said tape having a plurality of vertically aligned slots defined therein; holding means acting between selected ones of said pleats and said tape for keeping said plurality of pleats vertically spaced at substantially equal distances, wherein said holding means comprises a plurality of holders attached vertically immovably to said tape in abutment against said lower backs of the selected pleats for supporting, from below, said pleats to thereby prevent the latter from being lowered under their own weight, said holders having locking tongues, each locking tongue being inserted into one of said slots such that said holders are retained on the tape respectively at said slots.
Claim 2
Dependent Claim
186 words
A pleat screen having a front side and a back side comprising: a screen having a plurality of pleats vertically foldable and unfoldable, each of said pleats having an upper portion and a lower portion and each having slits defined therein defining in said screen at least one vertically aligned row of slits; at least one tape, extending vertically along said screen between the upper and lower ends thereof and extending through said vertically aligned row of slits defined therein, said tape having a plurality of vertically aligned slots defined therein; holding means acting between selected ones of said pleats and said tape for keeping said plurality of pleats vertically spaced at substantially equal distances, wherein said holding means comprises a plurality of holders attached vertically immovably to said tape in abutment against said lower backs of the selected pleats for supporting, from below, said pleats to thereby prevent the latter from being lowered under their own weight, said holders having locking tongues, each locking tongue being inserted into one of said slots such that said holders are retained on the tape respectively at said slots.
Claim 3
Dependent Claim
38 words
A pleat screen according to claim 1, wherein said holders are spaced vertically on said tape at substantially equal intervals and support said selected pleats with an equal number of pleats between each pair of said selected pleats.
Claim 4
Dependent Claim
58 words
A pleat screen according to claim 1, including a hanging frame and a bottom frame attached respectively to said upper and lower ends of said screen sheet, and a plurality of lift cords extending vertically through said pleats for folding and unfolding said screen sheet, said tape comprising a plurality of tapes positioned inwardly of said lift cords.
Claim 5
Dependent Claim
74 words
A pleat screen according to claim 1, including a hanging frame and a bottom frame attached respectively to said upper and lower ends of said screen sheet, and a pair of lift cords extending vertically through said pleats at horizontal opposite end portions of said screen sheet for folding and unfolding said screen sheet, said tape comprising a single tape positioned between said lift cords in the overlapping ends of said screen sheet members.
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) | 1988-09-30 | 1989-04-01 | 1989-10-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-09-30 | 1993-04-01 | 1993-10-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-09-30 | 1997-04-01 | 1997-10-01 | $7700.00 | Window Closed / Lapsed |