US3601034A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diffuser structure
Assignee: MI Windows and Doors LLC
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Filing: 1969-11-21
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Granted: 1971-08-24
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Expires: 1989-11-21
Abstract
Abstract A diffuser having a frame made of L-shaped members corner lock means securing the L-shaped members together, a plurality of louvers extending between the L-shaped members, the louvers having pins mounted at their end portions extending through openings in the frame members and an elongated flat multibladeholding strip extending along the frame members having pairs of resilient finger portions engaging the louver pins and securing the louvers against the inadvertent rotation thereof.
Inventors
- 👤 John G Thorne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:28
CPC Classifications
F; F24; F24F; F24F13/00; F24F13/08; F24F13/082
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
195 words
A diffuser comprising a plurality of substantially L-shaped frame members having mitered end portions, corner lock means securing said frame members together at said mitered end portions to form a substantially rectangular frame, a plurality of substantially equally spaced and parallel louvers extending between said frame members, said frame members having openings, stub shafts mounted on each end of each of said louvers and extending through said openings, a substantially flat and elongated multiblade-holding member extending along each of said frame members, said holding members having a plurality of pairs of finger portions struck from said flat member, extending at an oblique angle fRom said holding member and having free ends extending toward each other and disposed in spaced relation to each other and securing said stub shafts to prevent the inadvertant rotation thereof, said corner lock means having a substantially L-shaped member with openings along both edges along its full length, said frame member having a pair of substantially parallel and spaced ridges forming a slotted portion receiving said corner lock means, and locking said corner lock means in said slotted portion upon deforming said ridges at said openings on said corner lock means.
Claim 2
Dependent Claim
195 words
A diffuser comprising a plurality of substantially L-shaped frame members having mitered end portions, corner lock means securing said frame members together at said mitered end portions to form a substantially rectangular frame, a plurality of substantially equally spaced and parallel louvers extending between said frame members, said frame members having openings, stub shafts mounted on each end of each of said louvers and extending through said openings, a substantially flat and elongated multiblade-holding member extending along each of said frame members, said holding members having a plurality of pairs of finger portions struck from said flat member, extending at an oblique angle fRom said holding member and having free ends extending toward each other and disposed in spaced relation to each other and securing said stub shafts to prevent the inadvertant rotation thereof, said corner lock means having a substantially L-shaped member with openings along both edges along its full length, said frame member having a pair of substantially parallel and spaced ridges forming a slotted portion receiving said corner lock means, and locking said corner lock means in said slotted portion upon deforming said ridges at said openings on said corner lock means.
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) | 1974-08-23 | 1975-02-22 | 1975-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-23 | 1979-02-22 | 1979-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-23 | 1983-02-22 | 1983-08-24 | $7700.00 | Window Closed / Lapsed |