The present invention relates to an electrically operated remote control apparatus for raising and lowering window shades.
There are many known types of electrically operated remote control apparatus for automatically raising and lowering window shades. The present invention is directed toward a new and improved type of such apparatus which can be manufactured at relatively low cost.
In accordance with the principles of this invention, an electric adjustable tension shade bar employs a hollow composite elongated rotatable cylinder adjustable in length and having adjustable tension means at each end adapted to detachably engage opposite vertical sides of a window frame.
A direct current motor is disposed in the cylinder. Electric batteries are also disposed in the cylinder.
An electric connector means in the cylinder connects the batteries and the motor. This means is remotely operated by a control unit to connect the batteries to the motor into selected alternative first, second and third positions.
The motor rotates in a first direction in the first position, rotates in the second and opposite direction in the second position, and is rotationless in the third position.
A control unit is disposed outside of the cylinder and is electrically coupled to said connector means.
Gearing means in the cylinder interconnects the motor and the cylinder to cause the cylinder to rotate in the first direction when the motor rotates in the first direction, to rotate in the second direction when the motor rotates in the second direction, and to be rotationless when the motor is in its third position.
An elongated flat member is disposed in the cylinder. While the member is parallel to the axis of the cylinder it is fixed in position and does not rotatable therewith. The member supports the motor, connector means and batteries which are secured in fixed position on the member. A shade can be wrapped around the cylinder and detachably secured thereto.
Additional aspects of the invention will either be explained or will become apparent hereinafter.
The electric shade roll of the present invention is shown generally in
Referring to
In
Male adjusting roller 11 has a tubular body and is able to extend or contract into the external female extending roller 12. The shade roller 10 is fitted by lengthening the female extending roller 12 by pulling up on the length adjusting clip 15 and locking it into the proper adjusting holes 16 located on the male adjusting roller 11. The tightening grip for window jamb 14 is used to make firm the shade roller 10 once its length has been adjusted by the length adjusting clip 15 and adjusting holes 16. The free rotation of the shade roller 10 is done by roller bearings 19 at each end of the shade roller. Holding notches 20 prevent movement of the roller bearings 19 as well as firming of the end grips 13 and 14.
The motor gear 26 is linked to the roller gear 25. The roller gear 25 is attached to the female extending roller 12. As rotation of the electric motor 22 begins the motor gear 26 causes the roller gear 25 to rotate thereby rotating the attached shade roller 10, and causing the attached shade material 17 to wind or unwind. The attachment plate 28 is parallel to the axis, but extends non-rotatably in fixed position through central openings in gear 25 and bearing 19. This plate provides a stable base for attachment of the motor 22, the batteries 24, and the electric connector means 23. This means contains electrical switches and is remotely operated by a control 30 to connect the batteries to the motor into selected alternative first, second and third positions, the motor rotating in a first direction in the first position, rotating in the second and opposite direction in the second position, and being rotationless in the third position;
Gears 26 and 25 constitute gearing means in the cylinder interconnecting the motor and the cylinder to cause the cylinder to rotate in the first direction when the motor rotates in the first direction, to rotate in the second direction when the motor rotates in the second direction, and to be rotationless when the motor is in its third position.
In
In
While this invention has been described in detail with reference to the drawings and preferred embodiments, the protection solicited is to be limited only by the terms that follow,