US3971427A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Venetian blind profiled slats
Assignee: JUSTIN HUPPE Firma
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Filing: 1975-09-11
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Granted: 1976-07-27
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Expires: 1995-09-11
Abstract
Abstract A venetian blind is provided having the usual plurality of slats. Each slat is profiled transversely of its length such that it has a central section and pair of edge sections. The control section is substantially flat and is inclined at an angle to a plane which passes through the outer edges of the edge sections whereby the blind can be completely closed without the necessity of tipping the central sections of the slats as far as in previous constructions.
Inventors
- 👤 Heiko Coldewey
- 👤 Mario Ammazzalorso
- 👤 Karl-Heinz Kaps
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:42
CPC Classifications
E; E06; E06B; E06B9/00; E06B9/24; E06B9/26; E06B9/38; E06B9/386
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
169 words
A venetian blind having a plurality of slats carried by supporting devices each of which is profiled transversely to its length, each slat having a substantially planar central section and first and second edge sections respectively connected to and integral with opposite sides of said central section and respectively having free outer edges, the main plane of the central section being inclined at an acute angle with the connecting plane which passes through the outer edges of the edge sections, said central section having openings therein, raising devices extending through said openings, each slat having an asymmetrical cross-sectional profile such that said first edge section adjacent the central section includes a protuberance, a straight line between the top of said protuberance and the outer edge of said second edge section passing through said main plane, and pivot link means at said outer margins of said slats for connection with said supporting devices, said supporting devices being formed by a pair of vertical strips on either side of said slats.
Claim 2
Dependent Claim
169 words
A venetian blind having a plurality of slats carried by supporting devices each of which is profiled transversely to its length, each slat having a substantially planar central section and first and second edge sections respectively connected to and integral with opposite sides of said central section and respectively having free outer edges, the main plane of the central section being inclined at an acute angle with the connecting plane which passes through the outer edges of the edge sections, said central section having openings therein, raising devices extending through said openings, each slat having an asymmetrical cross-sectional profile such that said first edge section adjacent the central section includes a protuberance, a straight line between the top of said protuberance and the outer edge of said second edge section passing through said main plane, and pivot link means at said outer margins of said slats for connection with said supporting devices, said supporting devices being formed by a pair of vertical strips on either side of said slats.
Claim 3
Dependent Claim
22 words
A venetian blind as claimed in claim 1 wherein the profile of the second edge section of each slat includes a depression.
Claim 4
Dependent Claim
24 words
A venetian blind as claimed in claim 1 wherein the profile protuberance on each slat is provided with a coating of an elastic material.
Claim 5
Dependent Claim
34 words
A venetian blind as claimed in claim 3 wherein the coating consists of a plastic pad engaging a profiled beading provided in the edge section and positioned in the longitudinal direction of the slat.
Claim 6
Dependent Claim
45 words
A venetian blind as claimed in claim 1, wherein the edge sections of each slat respectively have substantially flat portions which include the edge sections, said flat portions of each slat respectively forming with said connecting plane a larger angle than does the central section.
Claim 7
Dependent Claim
41 words
A venetian blind as claimed in claim 5 wherein the flat part of the second edge section encloses an angle with skid connecting plane which is opposite to that enclosed by the central section of the slat and the connecting plane.
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) | 1979-07-27 | 1980-01-26 | 1980-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-07-27 | 1984-01-26 | 1984-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-07-27 | 1988-01-26 | 1988-07-27 | $7700.00 | Window Closed / Lapsed |