Window blind activator
AssigneeVerosol USA Inc.
InventorRalph Jelic
Life of this patent
Estimating the term…
Abstract
A device for raising and lowering window blind fabrics. The device has a hollow take-up tube disposed around and threadably engaged to a stationary guide. A cord is connected at its one end to the take-up tube and at its other end to the blind fabric. The take-up tube is rotated to wind or unwind the cord. A drive core rotatably disposed within a bi-directional friction brake, the drive core connected to the take-up tube, the bi-directional friction brake being fixed to the headrail. When the cord is wound around the take-up tube, the blind fabric is raised. When the cord is unwound, the blind fabric is lowered.
Claims16
A device for raising and lowering window blind fabric comprising,
- an elongated headrail;
- at least one elongated take-up tube rotatably fixed to said headrail;
- at least one elongated cord, each of said at least one elongated cord being fixed at one end to one of said at least one take-up tube and having an opposite end connectable to such window blind fabric;
- and
- a drive core rotatably disposed within a bi-directional friction brake, said drive core being connected to said take-up tube, said bi-directional friction brake being fixed to said headrail.
A device for raising and lowering window blind fabric, comprising:
- an elongated headrail;
- an elongated take-up tube rotatably fixed to said headrail;
- an elongated cord fixed at one end to said take-up tube and having an opposite end connectable to such window blind fabric;
- and
- a brake housing fixed to said headrail, said brake housing having a drive core seated therein;
- a brake cover fixed to said brake housing;
- and
- said brake housing and said brake cover each having a routing hole extending therethrough, said routing hole being sized and configured to allow said elongated cord to pass therethrough.
A device for raising and lowering an elongated section of window blind fabric, comprising,
- an elongated headrail, said headrail having a groove extending longitudinally along said headrail;
- and
- an elongated offset profile placed within said groove so that when an edge of said blind fabric is also placed within said groove, said offset profile and said blind fabric are secured within said groove, said offset profile further having an angled longitudinal edge.
Dependencies are inferred from the claim text.