Patent US5006097A successfully refreshed from Google Patents.
US5006097A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control unit for single and double track blinds
Assignee: Individual
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Filing: 1990-06-25
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Granted: 1991-04-09
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Expires: 2010-06-25
Abstract
Abstract A control unit for single and double track blinds is provided and consists of a sprocket wheel having a hub rotatably carried in the center of a passageway within a housing. An operating handle extends into the hub that extends through a central aperture in a front cover plate on the housing. The operating handle can be turned to rotate the sprocket wheel, thus driving a bead chain through the passageway to operate louvers in the single and double track blinds.
Inventors
- 👤 Henry Cook
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:18
CPC Classifications
F; F16; F16H; F16H19/00; F16H19/02; F16H19/06; E; E06; E06B; E06B9/00; E06B9/24; E06B9/26; E06B9/28; E06B9/30; E06B9/32; E06B9/36; E06B9/361; E06B9/56; E06B9/78; F16G; F16G13/00; F16G13/02; Y; Y10; Y10T; Y10T74/00; Y10T74/20; Y10T74/20396; Y10T74/20402; Y10T74/20444
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
111 words
A control unit for single and double track blinds comprising: (a) a housing having a passageway therethrough; (b) a sprocket wheel having a hub rotatably carried in the center of the passageway within said housing; (c) a front cover plate having a central aperture therethrough and is attached to said housing over said sprocket wheel so that the hub extends through the central aperture; and (d) an operating handle extending into the hub of said sprocket wheel so that said operating handle can be turned to rotate said sprocket wheel, thus driving a bead chain through the passageway of said housing to operate louvers in the single and double track blinds.
Claim 2
Dependent Claim
111 words
A control unit for single and double track blinds comprising: (a) a housing having a passageway therethrough; (b) a sprocket wheel having a hub rotatably carried in the center of the passageway within said housing; (c) a front cover plate having a central aperture therethrough and is attached to said housing over said sprocket wheel so that the hub extends through the central aperture; and (d) an operating handle extending into the hub of said sprocket wheel so that said operating handle can be turned to rotate said sprocket wheel, thus driving a bead chain through the passageway of said housing to operate louvers in the single and double track blinds.
Claim 3
Dependent Claim
21 words
A control unit as recited in claim 1, wherein said housing includes means for mounting said housing onto a stationary surface.
Claim 4
Dependent Claim
54 words
A control unit as recited in claim 2, wherein said mounting means is a base member being triangular in cross section so that said housing tips backward, said base member having a rearwardly extending flange portion with a pair of spaced apart mounting holes therethrough to receive screws that go into the stationary surface.
Claim 5
Dependent Claim
63 words
A control unit as recited in claim 3, wherein said sprocket wheel has a recess about its circumference shaped to receive the bead chain while the passageway in said housing has a curved surface therein so that the bead chain can ride through the top and bottom of the passageway past said sprocket wheel in opposite directions when said sprocket wheel is rotated.
Claim 6
Dependent Claim
47 words
A control unit as recited in claim 4, wherein said front cover plate is attached to said housing by four bolts, each extending through one corner of said front cover plate into said housing so that said front cover plate can be removed and replaced when needed.
Claim 7
Dependent Claim
37 words
A control unit as recited in claim 5, wherein said operating handle further includes an eye formed on its free end so that it can be operated by a hand, an extension pole and an electric motor.
Claim 8
Dependent Claim
39 words
A control unit as recited in claim 6, wherein said housing, said sprocket wheel and said front cover plate are all fabricated out of a durable plastic material, while said operating handle is made out of a metal material.
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) | 1994-04-08 | 1994-10-08 | 1995-04-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-04-08 | 1998-10-08 | 1999-04-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-04-08 | 2002-10-08 | 2003-04-09 | $7700.00 | Window Closed / Lapsed |