US3901302A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Protective grille
Assignee: Individual
•
Filing: 1973-10-16
•
Granted: 1975-08-26
•
Expires: 1993-10-16
Abstract
Abstract A foldable closure structure comprising a foldable curtain having a plurality of panel members hingeably interconnected along opposed vertical edges. Detachable hinge means are secured in spaced apart relationship to each of the vertical edges of the panel members. A connecting rod interconnects the hinge means of adjacent vertical edges along a common axis. Suspension means are provided for suspending the curtain in a frame opening. The hinge means are each provided with attachment means for detachable connection to a portion of a respective vertical edge of adjacent panel members.
Inventors
- 👤 Robert Dagenais
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:13
CPC Classifications
E; E05; E05D; E05D3/00; E05D3/02
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
181 words
A foldable closure structure comprising a foldable curtain having a plurality of panel members hingeably interconnected along opposed vertical edges, hinge members secured in spaced apart relationship to each said vertical edges, said hinge members each having panel attachment means for connection to a portion of a respective vertical edge of adjacent panel members, a connecting rod pivotally interconnecting said hinge members of adjacent vertical edges along a common axis, each said hinge member having an abutment surface lying substantially parallel to said connecting rod for abutment with a portion of said vertical edge of said panel member adjacent to the panel member to which said hinge member is connected to, each said hinge member further having a circular bore therein for receiving said connecting rod, said attachment means being a through bore disposed parallel to said circular bore, and a panel receiving opening in said member extending to said through bore for slidingly receiving a portion of said vertical edge of a respective panel member in said through bore, and suspension means for suspending said curtain in a frame opening.
Claim 2
Dependent Claim
181 words
A foldable closure structure comprising a foldable curtain having a plurality of panel members hingeably interconnected along opposed vertical edges, hinge members secured in spaced apart relationship to each said vertical edges, said hinge members each having panel attachment means for connection to a portion of a respective vertical edge of adjacent panel members, a connecting rod pivotally interconnecting said hinge members of adjacent vertical edges along a common axis, each said hinge member having an abutment surface lying substantially parallel to said connecting rod for abutment with a portion of said vertical edge of said panel member adjacent to the panel member to which said hinge member is connected to, each said hinge member further having a circular bore therein for receiving said connecting rod, said attachment means being a through bore disposed parallel to said circular bore, and a panel receiving opening in said member extending to said through bore for slidingly receiving a portion of said vertical edge of a respective panel member in said through bore, and suspension means for suspending said curtain in a frame opening.
Claim 3
Dependent Claim
71 words
A foldable closure as claimed in claim 1 wherein said hinge members are secured in spaced apart relationship along a respective vertical edge of each said panel members, said spacing being equal to the length of said hinge member whereby hinge members from an adjacent panel member may be received in said spacing to permit interconnection of said hinge members of adjacent vertical edges of said panels, along a common axis.
Claim 4
Dependent Claim
52 words
A foldable closure as claimed in claim 1 wherein said panel members each comprise a substantially rectangular panel having enlarged elongated vertical edges, said vertical edges being of a cross-section for slideable connection in said attachment through bore of said hinge members with said panel extending out of said panel receiving opening.
Claim 5
Dependent Claim
54 words
A foldable closure as claimed in claim 3 wherein said enlarged elongated vertical edges are tubular edges, said through bore of said hinge members having a circular cross-section for receiving said tubular edges, and securement means engageable in the opposed ends of each said tubular members for retaining a plurality of hinge members therebetween.
Claim 6
Dependent Claim
36 words
A foldable closure as claimed in claim 4 wherein said tubular edge is formed by a tubular member having an elongated slot along its entire length for connection to the vertical edge of said rectangular panel.
Claim 7
Dependent Claim
21 words
A foldable closure as claimed in claim 3 wherein said panel members and said hinge members are made of plastic material.
Claim 8
Dependent Claim
64 words
A foldable closure as claimed in claim 1 wherein said panel members are provided with a vertical through bore for receiving a support rod therein, said support rod having a top connectable end secured for sliding displacement in a ceiling track in the top of said opening whereby to permit said plurality of panel members to be folded in accordion fashion below said track.
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) | 1978-08-25 | 1979-02-24 | 1979-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-08-25 | 1983-02-24 | 1983-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-08-25 | 1987-02-24 | 1987-08-26 | $7700.00 | Window Closed / Lapsed |