A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Conical cord-winding spool with circumferential steps
A mechanism for extending or retracting for a covering for an architectural opening with respect to architectural opening, including a rotatable drive shaft (5); at least one lift cord (11, 13), at least one cord spool (7, 9) for winding and unwinding the at least one lift cord, the cord spool being mounted for rotation with the drive shaft and being axially stationary. The cord spool has a first diameter end (21, 27) and a second diameter end (23, 29), the first diameter being larger than the second diameter, and the spool has a first generally conical circumferential spool portion (33) therebetween, wherein the first spool portion (33) comprises a plurality of steps (35, 37, 39, 41, 43, 45) each step having a tread (35A, 37A, 39A, 41A, 43A, 45A).
Conical cord-winding spool with circumferential steps
A mechanism for extending or retracting for a covering for an architectural opening with respect to architectural opening, including a rotatable drive shaft (5); at least one lift cord (11, 13), at least one cord spool (7, 9) for winding and unwinding the at least one lift cord, the cord spool being mounted for rotation with the drive shaft and being axially stationary. The cord spool has a first diameter end (21, 27) and a second diameter end (23, 29), the first diameter being larger than the second diameter, and the spool has a first generally conical circumferential spool portion (33) therebetween, wherein the first spool portion (33) comprises a plurality of steps (35, 37, 39, 41, 43, 45) each step having a tread (35A, 37A, 39A, 41A, 43A, 45A).
Conical cord-winding spool with circumferential steps
DEKKER NICOLAAS (author) / SLOBBE CHRISTIANUS WILFRED MICHAEL (author)
2016-03-31
Patent
Electronic Resource
English
IPC:
E06B
Feste oder bewegliche Abschlüsse für Öffnungen in Bauwerken, Fahrzeugen, Zäunen oder ähnlichen Einfriedungen allgemein, z.B. Türen, Fenster, Läden, Tore
,
FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES, OR LIKE ENCLOSURES, IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES