Patent US3730074A successfully refreshed from Google Patents.
US3730074A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Grille
Assignee: EMEH Inc
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Filing: 1971-02-16
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Granted: 1973-05-01
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Expires: 1991-02-16
Abstract
Abstract A grille comprising a plurality of substantially spaced-apart bars, each of which includes in cross-section, a web portion, a flange at one end of the web portion that has parts that project laterally, relative to the web portion, and an enlargement at the other end of the web portion that forms beads projecting out from each face of the web portion and having faces generally perpendicular to the faces of the web portion and generally facing the projecting parts of the flange. A plurality of blades extend substantially crosswise of the bars, and the blades and bars are mutually slotted and are interfitted in egg-crate fashion. Each bar receives a blade retainer that is generally Ushaped in cross-section, has resiliently deformable legs, and is provided with a bead extending inwardly from each leg that is captured by the beads on the bars. One edge of each blade engages the outwardly projecting parts of the bar flanges, and the other edges of the blades are engaged by the ends of the legs of the blade retainers.
Inventors
- 👤 F Helwig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 23:05
CPC Classifications
E; E06; E06B; E06B7/00; E06B7/02; E06B7/08; E06B7/082; F; F24; F24F; F24F13/00; F24F13/08
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
273 words
A grille comprising a plurality of elongated spaced-apart parallel bars of substantially uniform cross-section, each bar having in cross-section a web portion, a flange portion at one edge of the web portion, the flange portion including parts that project laterally in opposite directions from the web portion, and an enlargement forming a pair of laterally projecting beads at the opposite edge of the web portion; a plurality of elongated blade retainers, one of which is received on the enlarged portion of each bar and each of which has in cross-section a pair of interconnected spaced-apart resilient legs, each leg having an enlarged portion forming a bead that projects toward the bead of the other leg, the beads of the enlargement on the bars and the bead on the legs of the blade retainers being positioned and shaped relative to each other to interengage and hold the retainers on the bars, and the legs being of a length and having a resiliency such that the retainers are receivable on the bars by pushing them laterally toward each other to snap the retainers in place on the bars; and a plurality of spaced-apart blades extending crosswise of tHe bars, the blades and bars being mutually slotted and interfitted in egg-crate fashion, opposite edge portions of each blade being engaged by the lateral projecting parts of at least two bars and by the ends of the legs of the retainers associated with such bars thereby to capture and retain the blades on the bars, and the enlarged portions of corresponding bars and retainers being in engagement with each other to retain the retainers on the bars.
Claim 2
Dependent Claim
273 words
A grille comprising a plurality of elongated spaced-apart parallel bars of substantially uniform cross-section, each bar having in cross-section a web portion, a flange portion at one edge of the web portion, the flange portion including parts that project laterally in opposite directions from the web portion, and an enlargement forming a pair of laterally projecting beads at the opposite edge of the web portion; a plurality of elongated blade retainers, one of which is received on the enlarged portion of each bar and each of which has in cross-section a pair of interconnected spaced-apart resilient legs, each leg having an enlarged portion forming a bead that projects toward the bead of the other leg, the beads of the enlargement on the bars and the bead on the legs of the blade retainers being positioned and shaped relative to each other to interengage and hold the retainers on the bars, and the legs being of a length and having a resiliency such that the retainers are receivable on the bars by pushing them laterally toward each other to snap the retainers in place on the bars; and a plurality of spaced-apart blades extending crosswise of tHe bars, the blades and bars being mutually slotted and interfitted in egg-crate fashion, opposite edge portions of each blade being engaged by the lateral projecting parts of at least two bars and by the ends of the legs of the retainers associated with such bars thereby to capture and retain the blades on the bars, and the enlarged portions of corresponding bars and retainers being in engagement with each other to retain the retainers on the bars.
Claim 3
Dependent Claim
25 words
A grille according to claim 1 wherein the bars are generally T-shaped in cross-section, the flange being a portion substantially perpendicular to the web portion.
Claim 4
Dependent Claim
56 words
A grille according to claim 1 wherein the blade retainers are generally U-shaped in cross-section, the leg portions of the U being resiliently deflectable to enable the beads thereon to pass the beads on the enlargement of each bar and to be captured between the blade edges and the beads of the enlargement of each bar.
Claim 5
Dependent Claim
87 words
A grille according to claim 3 wherein the enlargement of each bar includes, in cross section, angularly related end faces, and wherein the bead on each leg of each blade retainer includes a face generally parallel to a corresponding face on the bar enlargement, such faces of the bar enlargement and the retainer legs being engageable upon assembly of a retainer on a blade and being adapted to cam the legs outwardly and enable the beads on the retainer to pass by the beads of the bars.
Claim 6
Dependent Claim
63 words
A grille according to claim 4 wherein the beads on each bar include faces disposed substantially perpendicular to the faces of the web portion and facing inwardly toward the web portion and wherein the beads on the retainer legs include faces substantially parallel to and engageable with the said faces on the corresponding bar face to secure the retainer on the corresponding bar.
References Cited (Backward Citations)
US2007716A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-04-30 | 1976-10-30 | 1977-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-30 | 1980-10-30 | 1981-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-30 | 1984-10-30 | 1985-05-01 | $7700.00 | Window Closed / Lapsed |