US4484611A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Venetian blind structure
Assignee: Hunter Douglas Inc
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Filing: 1983-12-30
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Granted: 1984-11-27
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Expires: 2003-12-30
Abstract
Abstract A venetian blind structure having a plurality of tiltable slats and slat support means including a top pivotal bearing structure remote from and above the top slat and a bottom pivotal bearing structure remote from and below the bottom slat. The slat support means extend between and are connected to the top and bottom pivotal bearing structure which in turn are adapted to be fixed to top and bottom frame members of a window opening.
Inventors
- 👤 Richard N. Anderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 12:14
CPC Classifications
E; E06; E06B; E06B9/00; E06B9/24; E06B9/26; E06B9/28
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
142 words
A venetian blind structure having a plurality of tiltable slats and a plurality of slat support means for supporting said slats, the improvement characterized in having a plurality of top pivotal bearing structures extending along a length of said slats and remote from and above said slats adapted to be secured to a first frame member, in having a plurality of bottom pivotal bearing structures extending along a length of said slats and spaced remote from and below said slats adapted to be secured to a second frame member opposite said first frame member, and in having a slat support means extending from each top pivotal bearing structure and connected to a bottom bearing structure, said bearing structures each being adapted to pivot about a pivot axis being spaced remote from and extending substantially parallel to the longitudinal axes of the slats.
Claim 2
Dependent Claim
142 words
A venetian blind structure having a plurality of tiltable slats and a plurality of slat support means for supporting said slats, the improvement characterized in having a plurality of top pivotal bearing structures extending along a length of said slats and remote from and above said slats adapted to be secured to a first frame member, in having a plurality of bottom pivotal bearing structures extending along a length of said slats and spaced remote from and below said slats adapted to be secured to a second frame member opposite said first frame member, and in having a slat support means extending from each top pivotal bearing structure and connected to a bottom bearing structure, said bearing structures each being adapted to pivot about a pivot axis being spaced remote from and extending substantially parallel to the longitudinal axes of the slats.
Claim 3
Dependent Claim
22 words
A venetian blind structure according to claim 1 the improvement further comprising in that said slat support means comprise a tape ladder.
Claim 4
Dependent Claim
56 words
A venetian blind structure according to claim 1 wherein each said pivotal bearing structure comprises a quadrant to which said slat suspension means are connected having a circular guide surface concentric with a pivot axis, and a guide bracket slidably engaging said guide surface with said guide bracket adapted to be secured to a frame member.
Claim 5
Dependent Claim
27 words
A venetian blind assembly according to claim 3 wherein the radius of each said circular guide surface is substantially equal to one-half the width of said slats.
Claim 6
Dependent Claim
47 words
A venetian blind assembly according to claim 1 having in addition tilt operation means connected to a slat supporting means to move the same to cause each said pivotal bearing structure to pivot about its associated pivot axis and to cause all of said slats to tilt.
Claim 7
Dependent Claim
57 words
A venetian blind structure according to claim 5 wherein said tilt operation means comprise an operation knob connected to an end of one of said slats whereby said one of the said slats may be tilted about its longitudinal axis to cause said slat supporting means to tilt the remainder of the slats about their longitudinal axes.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-11-27 | 1988-05-28 | 1988-11-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-11-27 | 1992-05-28 | 1992-11-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-11-27 | 1996-05-28 | 1996-11-27 | $7700.00 | Window Closed / Lapsed |