Patent US6526091B1 successfully refreshed from Google Patents.
Patent US3828838A successfully refreshed from Google Patents.
US3828838A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Venetian blind having tilt-limiting attachment
Assignee: Levolor Corp
•
Filing: 1973-03-08
•
Granted: 1974-08-13
•
Expires: 1993-03-08
Abstract
Abstract The head of the blind is provided with a two-part attachment which serves to limit the tilting movement of the slats. For a different limit of forward and/or backward tilt, one part of the attachment is replaced by a part which is similar but which establishes the different limit or limits.
Inventors
- 👤 J Anderle
- 👤 G Neira
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 08:18
CPC Classifications
E; E06; E06B; E06B9/00; E06B9/24; E06B9/26; E06B9/28; E06B9/30; E06B9/303; E06B9/307; E06B2009/285
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
174 words
A Venetian blind which has a head that includes (1) an elongated channel that has a bottom wall and upstanding front and rear walls, (2) a tilter mounted within the channel, and (3) a tilt bar which extends longitudinally within the channel and is rotated back and forth by the tilter; the ladder-and-slat assembly of the blind being supported from the tilt bar, and rotative movement of the tilt bar being transformed into tilting movement of the slats - wherein the improvement comprises: an attachment which limits the tilting movement of the slats to an amount that is less than the tilting movement afforded by the tilter itself, said attachment comprising (a) a stop member which is applied to the head and (b) a cooperating limit member which is applied to the tilt bar of the head and rotates into engagement with the stop member and arrests the rotation of the tilt bar before the slats have been tilted, in one or both directions, to the degree of tilt afforded by the tilter itself.
Claim 2
Dependent Claim
174 words
A Venetian blind which has a head that includes (1) an elongated channel that has a bottom wall and upstanding front and rear walls, (2) a tilter mounted within the channel, and (3) a tilt bar which extends longitudinally within the channel and is rotated back and forth by the tilter; the ladder-and-slat assembly of the blind being supported from the tilt bar, and rotative movement of the tilt bar being transformed into tilting movement of the slats - wherein the improvement comprises: an attachment which limits the tilting movement of the slats to an amount that is less than the tilting movement afforded by the tilter itself, said attachment comprising (a) a stop member which is applied to the head and (b) a cooperating limit member which is applied to the tilt bar of the head and rotates into engagement with the stop member and arrests the rotation of the tilt bar before the slats have been tilted, in one or both directions, to the degree of tilt afforded by the tilter itself.
Claim 3
Dependent Claim
36 words
A Venetian blind as in claim 1 wherein the improvement further comprises: the attachment is removable readily to restore the available tilting movement of the slats to the full tilting movement afforded by the tilter itself.
Claim 4
Dependent Claim
44 words
A Venetian blind as in claim 1 wherein the improvement further comprises: the limit member which is applied to the tilt bar is replaceable readily with a limit member which provides a different limit of tilt of the slats in one or both directions.
Claim 5
Dependent Claim
48 words
A Venetian blind as in claim 1 wherein the improvement further comprises: the limit member of the attachment is adjacent to the tilter, and the stop member of the attachment has a body portion which is between the tilter and one of the upstanding walls of the channel.
Claim 6
Dependent Claim
73 words
A Venetian blind as in claim 1 wherein the improvemeNt further comprises: the limit member of the attachment is telescoped onto the tilt bar and makes noncircular confrontation therewith to cause the limit member to rotate with the tilt bar, the limit member is adjacent to the tilter, and the stop member of the attachment has a portion which extends alongside the limit member and retains the limit member adjacent to the tilter.
Claim 7
Dependent Claim
71 words
A Venetian blind as in claim 1 wherein the improvement further comprises: the limit member of the attachment is adjacent to the tilter, the stop member of the attachment has a body portion which is between the tilter and the rear wall of the channel, and the stop member has body portions that extend alongside the two sides of the tilter which face toward the two ends of the channel, respectively.
Claim 8
Dependent Claim
57 words
A Venetian blind as in claim 1 in which the upper edges of the channel are inturned and wherein the improvement further comprises: the stop member of the attachment is provided with a latch which engages beneath one of the inturned edges of the channel and thereby latches the stop member to the head of the blind.
Claim 9
Dependent Claim
42 words
A Venetian blind as in claim 7 wherein the improvement further comprises: the stop member of the attachment is removable from the head by springing the inturned edge of the channel out of holding engagement with the latch of the stop member.
Claim 10
Dependent Claim
73 words
A Venetian blind as in claim 8 wherein the improvement further comprises: the limit member of the attachment is telescoped onto the tilt bar and makes noncircular confrontation therewith to cause the limit member to rotate with the tilt bar, the limit member is adjacent to the tilter, and the stop member of the attachment has a portion which extends alongside the limit member and retains the limit member adjacent to the tilter.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-08-12 | 1978-02-11 | 1978-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-08-12 | 1982-02-11 | 1982-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-08-12 | 1986-02-11 | 1986-08-13 | $7700.00 | Window Closed / Lapsed |