Cord retractor

• US 5,775,473 A
• Filed: 08/08/1996
• Issued: 07/07/1998
• Est. Priority Date: 08/08/1996
• Status: Expired due to Fees

• Current Assignee: Cordero Jose, Jose Cordero
• Original Assignee: Jose Cordero
• Inventors: Cordero, Jose
• Primary Examiner(s): Le, Mark T.
• Application Number:
  US08/694,528
• Time in Patent Office: 698 Days
• Field of Search: 191/12 R, 191/12.2 R, 191/12.4, 191/12.2 A, 439/18, 439/19
• US Class Current: 191/12.20A
• CPC Class Codes: B65H 2551/13 Remote control devices, e.g. speech recognition
• CPC Class Codes: B65H 75/38 involving the use of a core or former internal to, and supporting, a stored package of material
• CPC Class Codes: B65H 75/4486 Electric motors
• CPC Class Codes: H02G 11/02 using take-up reel or drum

Abstract

A cord retractor includes free-wheeling reel upon which an electrical cord is stored, and from which the electrical cord can be played out. A remote finger-depressible switch positioned proximate a free end of the electrical cord operates, when depressed, to simultaneously activate an electric motor and a clutch mechanism that apply a revolving force to the electrical reel to retract the played-out portion of the electrical cord as desired. Input AC power is applied to the cord, switch, and electric motor through a rotating sidewall of the reel. When the is remotely located switch is released, the clutch is disengaged to allow the reel to free-wheel for withdrawal of the electrical cord.

Claims

1. A transfer mechanism for transferring electrical power to a rotating plate comprising:

a retraction reel;

a rotating plate attached to and positioned concentric with the retraction reel, the rotating plate having a first surface upon which is formed a plurality of concentric current carrying paths;

a stationary, non-conducting mounting plate juxtaposed with the first surface of the rotating plate;

a plurality of electrical contacts each one of the plurality of electric contacts having at one end a roller that is positioned to protrude through a corresponding aperture in the mounting plate and placed in electrical contact with a corresponding one of the plurality of concentric current carrying paths; and

a source of alternating current having first and second leads respectively coupled to first and second ones of the plurality of concentric current carrying paths, an electric motor coupled through a pair of the plurality electrical contacts to the second one and a third one of the concentric current carrying paths, and a switch connected in series through corresponding ones of the electrical contacts between the first and third ones of the plurality of concentric current carrying paths, the switch operating in a first position to apply alternating current to the electric motor, and in a second position to prevent alternating current from being applied to the electric motor.

2. The transfer mechanism of claim 1, wherein the plate is fabricated from an electrically insulative material.

3. The transfer mechanism of claim 2, wherein the retraction reel is mounted for rotation, and the electric motor being coupled to rotate the retraction when alternating current is applied to the electric motor.

4. The transfer mechanism of claim 3, wherein the retraction reel is mounted to be free wheeling when alternating current is not applied to the electric motor.

5. The transfer mechanism of claim 2, including an electric cord wound upon the retraction reel to be extracted therefrom when alternating current is not applied to the electric motor, and to be retracted upon the retraction reel when alternating power is applied to the electric motor.

6. The transfer mechanism of claim 5, wherein the electric cord includes first and second electrical wires respectively coupled to the first and second ones of the plurality of concentric current carrying paths, and an electrical outlet at a distal end of the first and second electrical wires, the first and second electrical wires operating to communicate alternating current to the electrical outlet.

7. The transfer mechanism of claim 6, wherein the switch is mounted to the electrical cord proximate the electrical outlet.

8. A transfer mechanism for selectively applying electric current to a rotatable retraction reel to retract an electric cord onto the retraction reel, the transfer mechanism comprising:

a planar surface formed at an end of the retraction reel, the planar surface having a number of concentric current carrying paths formed thereon;

a mounting plate for rotatably mounting the retraction reel, the mounting plate being in juxtaposition with the planar surface;

at least first, second, and third contact elements mounted to the mounting plate in a manner that places the mounting plate between the first, second, and third contact elements and the number of current carrying paths, each of the first, second, and third contact elements being mounted proximate corresponding apertures formed in the mounting plate, the contact elements being in electrical contact with corresponding ones of the current carrying paths through apertures formed in the mounting plate;

a source of alternating current coupled between the first and third contact elements;

an electric motor connected between the second and third contact elements, and coupled to the retraction reel to rotate the retraction reel when alternating current is applied to the electric motor;

a solenoid element connect in parallel circuit configuration with the electric motor and between the second and third contact elements;

a switch connected between the first and second contact elements, the switch being operable in a first mode to apply alternating current to the electric motor and to the solenoid element, and in a second mode interrupting alternating current to the electric motor and solenoid element; and

a clutch element connected to the electric motor and to the solenoid element, the clutch element being positioned to engage and rotate the retraction reel when alternating current is applied to the electric motor and the solenoid element.