Patent US4386644A successfully refreshed from Google Patents.
US4386644A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vertical blind tilt control
Assignee: Levolor Corp
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Filing: 1981-04-16
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Granted: 1983-06-07
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Expires: 2001-04-16
Abstract
Abstract A vertical blind having a blind head with a tilt rod, a cap mounted to one end of the head and including a bushing, a sleeve connected to the tilt rod and rotatably supported in the bushing, and a worm gear located within the cap and connected to the sleeve, and a worm on a shaft accessible from outside the cap and operatively connected to the worm gear for rotating the same by means of a wand. Alternatively, a sprocket wheel is located within the cap and connected to the sleeve, and a bead chain accessible from the outside passes over the sprocket wheel for rotating the same.
Inventors
- 👤 Victor Debs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 12:44
CPC Classifications
E; E06; E06B; E06B9/00; E06B9/24; E06B9/26; E06B9/36; E06B9/361; E06B9/28; E06B9/30; E06B9/32; E06B9/323; Y; Y10; Y10S; Y10S160/00; Y10S160/90
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
180 words
An end cap for connection to one end of a head of a vertical blind and for receiving therein tilt rod operating means selectively formed by (a) a sprocket wheel having a sleeve and to be rotated by a bead chain, and (b) the combination of a gear having a sleeve, and a worm arranged on a worm shaft and meshing with said gear; said cap comprising: a housing having a wall, a bushing connected to said wall for receiving therein part of a tilt rod in spaced relationship thereto and for selectively rotatably supporting one of said sleeves when connected to said tilt rod, said housing being open opposite said wall and adapted to receive in said housing said sprocket wheel and worm gear respectively, said housing also having a passage for receiving therein said worm shaft below said worm, and a supporting surface extending substantially horizontally and semi-annularly around said passage for supporting thereon said worm, whereby said worm shaft and worm can be introduced from one side into said passage and said worm supported on said surface.
Claim 2
Dependent Claim
180 words
An end cap for connection to one end of a head of a vertical blind and for receiving therein tilt rod operating means selectively formed by (a) a sprocket wheel having a sleeve and to be rotated by a bead chain, and (b) the combination of a gear having a sleeve, and a worm arranged on a worm shaft and meshing with said gear; said cap comprising: a housing having a wall, a bushing connected to said wall for receiving therein part of a tilt rod in spaced relationship thereto and for selectively rotatably supporting one of said sleeves when connected to said tilt rod, said housing being open opposite said wall and adapted to receive in said housing said sprocket wheel and worm gear respectively, said housing also having a passage for receiving therein said worm shaft below said worm, and a supporting surface extending substantially horizontally and semi-annularly around said passage for supporting thereon said worm, whereby said worm shaft and worm can be introduced from one side into said passage and said worm supported on said surface.
References Cited (Backward Citations)
US2599884A
Cited
US2809531A
Cited
US3425479A
Cited
US3878877A
Cited
US3918513A
Cited
US4122884A
Cited
US4214622A
Cited
US4262728A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-06-06 | 1986-12-06 | 1987-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-06-06 | 1990-12-06 | 1991-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-06-06 | 1994-12-06 | 1995-06-07 | $7700.00 | Window Closed / Lapsed |