Patent US3738413A successfully refreshed from Google Patents.
US3738413A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Retractable barrier
Assignee: Individual
•
Filing: 1971-07-01
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Granted: 1973-06-12
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Expires: 1991-07-01
Abstract
Abstract A retractable barrier for use in sealing doors, windows, gates, alleys and the like is provided in which a plurality of foldable interlocking slats are disposed in a frame, the frame having channels on each side with a lower section of sufficient depth to receive the unfolded slats and a deeper upper section of sufficient depth to receive the folded slats, and flexible bands disposed within the channels so as to frictionally engage the unfolded slats in the lower section and the folded slats in the upper section.
Inventors
- 👤 R Frobosilo
- 👤 S Levine
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 14:22
CPC Classifications
E; E06; E06B; E06B9/00; E06B9/02; E06B9/06; E06B9/0607; E06B9/0646; E06B9/0669; E06B9/0615; E06B9/0638
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
125 words
A retractable barrier having a plurality of foldable interlocking slats, a frame having a channel with a lower section of sufficient depth to receive the unfolded slats and a deeper upper section of sufficient depth to receive the folded slats, and disposed within at least the upper section of said channel a pair of flexible bands operable to frictionally engage both the unfolded slats entering the lower section and the folded slats in the upper section to a height in said upper section, of a/b X c where a is the height of the opening resulting from retraction of said barrier, b is the width of each slat and c is the space occupied by the thickness of a single slat in its folded configuration.
Claim 2
Dependent Claim
125 words
A retractable barrier having a plurality of foldable interlocking slats, a frame having a channel with a lower section of sufficient depth to receive the unfolded slats and a deeper upper section of sufficient depth to receive the folded slats, and disposed within at least the upper section of said channel a pair of flexible bands operable to frictionally engage both the unfolded slats entering the lower section and the folded slats in the upper section to a height in said upper section, of a/b X c where a is the height of the opening resulting from retraction of said barrier, b is the width of each slat and c is the space occupied by the thickness of a single slat in its folded configuration.
Claim 3
Dependent Claim
172 words
A retractable metal barrier having a plurality of interlocking slats, a frame having an upper storage section and two lower parallel side runner sections, said frame defining channels running from the upper storage section to the lower runner section to receive the slats, said channels being of a depth in the upper section slightly greater than the width of the slats so as to receive the folded slats and of a depth in the lower section slightly greater than the maximum thickness of the slats so as to receive the unfolded slats, and a pair of flexible metal bands disposed within each of said channels and frictionally engaged by both the unfolded slats in the lower section and the folded slats in the upper section, one end of each band being secured at the top of the storage section and the other end of each band being secured at the bottom of the runner section, said slats being disposed on each side within and frictionally engaged by a pair of said bands.
Claim 4
Dependent Claim
172 words
A retractable metal barrier having a plurality of interlocking slats, a frame having an upper storage section and two lower parallel side runner sections, said frame defining channels running from the upper storage section to the lower runner section to receive the slats, said channels being of a depth in the upper section slightly greater than the width of the slats so as to receive the folded slats and of a depth in the lower section slightly greater than the maximum thickness of the slats so as to receive the unfolded slats, and a pair of flexible metal bands disposed within each of said channels and frictionally engaged by both the unfolded slats in the lower section and the folded slats in the upper section, one end of each band being secured at the top of the storage section and the other end of each band being secured at the bottom of the runner section, said slats being disposed on each side within and frictionally engaged by a pair of said bands.
Claim 5
Dependent Claim
18 words
A retractable barrier according to claim 2 wherein the slats are interlocked through spiral form roll hinge means.
Claim 6
Dependent Claim
12 words
A retractable barrier according to claim 2 wherein the slats are solid.
Claim 7
Dependent Claim
12 words
A retractable barrier according to claim 2 wherein the slats are perforated.
Claim 8
Dependent Claim
53 words
A retractable barrier according to claim 2 wherein the uppermost portion of the upper storage section includes a hinged panel on one side, the flexible metal band on that side being secured to the top of the panel, and a second cover panel secured to the frame and enclosing the upper storage section.
References Cited (Backward Citations)
US597402A
Cited
US3273632A
Cited
US2423987A
Cited
US3411560A
Cited
US3591221A
Cited
US3575229A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-06-11 | 1976-12-11 | 1977-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-11 | 1980-12-11 | 1981-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-11 | 1984-12-11 | 1985-06-12 | $7700.00 | Window Closed / Lapsed |