Flexible or portable closure – partition – or panel – Pleating type – With preformed pleats
Patent
1997-05-01
2000-05-02
Stodola, Daniel P.
Flexible or portable closure, partition, or panel
Pleating type
With preformed pleats
160 8401, 160 8404, 2424225, A47H 500
Patent
active
060560363
ABSTRACT:
A cordless drive mechanism for use in a top rail of a shade having inherent spring characteristics. The drive mechanism includes a constant torque spring assembly, at least two tape spool assemblies, and a brake/clutch mechanism, all interconnected via a shaft. The shaft is driven by at least one spring assembly to drive the tape spool assembly, which retracts a bottom rail of the shade by acting as a reel upon which tape is wound. The brake/clutch assembly locks the shade into a position desired by the user, and applies a braking force to the shaft when the shade is retracting, forcing a virtually constant retraction speed. The constant torque spring assembly is modular, constructed of identical housing pieces, a spring take-up spool and a rolled constant torque spring. More spring assemblies may be added to the drive mechanism for larger and heavier shades. The tape spool assembly includes a tape guide retainer fitted with an angled tape retention wall which prevents slack tape from accumulating with the top rail.
REFERENCES:
patent: 4444242 (1984-04-01), Amsler et al.
patent: 4606157 (1986-08-01), Esposito
patent: 4687041 (1987-08-01), Anderson
patent: 4832271 (1989-05-01), Geleziunas
patent: 4838333 (1989-06-01), Mottura
patent: 5105867 (1992-04-01), Coslett
patent: 5184660 (1993-02-01), Jelic
patent: 5279472 (1994-01-01), Hongo et al.
patent: 5307855 (1994-05-01), Martensson, IV
patent: 5311729 (1994-05-01), Viaud
patent: 5482100 (1996-01-01), Kuhar
patent: 5519562 (1996-05-01), Argumedo et al.
patent: 5531257 (1996-07-01), Kuhar
patent: 5706876 (1998-01-01), Lysyj
patent: 5791393 (1998-08-01), Judkins
patent: 5799715 (1998-09-01), Biro et al.
patent: 5868893 (1999-02-01), Kipper et al.
Sleasman Matthew K.
Todd David
White, Jr. Robert F.
Comfortex Corporation
Lev Bruce A.
Stodola Daniel P.
LandOfFree
Cordless shade does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Cordless shade, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Cordless shade will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1586357