Electricity: conductors and insulators – Conduits – cables or conductors – Extensible
Reexamination Certificate
1999-09-20
2001-08-28
Patel, Rajnikant B. (Department: 2838)
Electricity: conductors and insulators
Conduits, cables or conductors
Extensible
C439S503000, C414S563000
Reexamination Certificate
active
06281441
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to the field of systems for electrical harness wires.
2. Description of the Background Art
Many auxiliary devices and vehicles such as wagons and the like have electrical systems with an electrical harness for connecting to a source of electricity. With towable wagons, the electrical harness can extend along the tongue, so that a towing vehicle may be electrically connected to the wagon for the purposes of operating lights, brakes, control functions, etc., on the wagon.
There remains a need in the art for improved systems for electrical harness wires.
SUMMARY OF THE INVENTION
In accordance with the present invention, disclosed is a retractable system for a harness wire which comprises a slidable harness wire pulley affixed to an elongate support member, and capable of sliding in relation to the elongated support member. It includes an elastic cord pulley fixed to a front portion of the elongate support member, and an elastic cord having a first end fixed to the front portion of the elongate support member, a second end fixed to the slidable harness wire pulley, and having a first length extending from the front portion of the elongate support member to the elastic cord pulley, passing around the elastic cord pulley, with a second length extending between the elastic cord pulley and the slidable harness wire pulley, wherein the elastic cord urges the slidable harness wire pulley toward the rear portion of the elongate support member. A harness wire is provided, which has a first length extending from the rear portion of the elongate support member to the front portion of the elongate support member, and being fixed to the front portion of the elongate support member, having a second length extending from the front portion of the elongate support member to the slidable harness wire pulley, passing around the slidable harness wire pulley, and having a third length extending from the slidable harness wire pulley to the front portion of the elongate support member. The slidable harness wire pulley places a rearward tension on the harness wire while allowing the harness wire to be extended and retracted from the front portion of the elongate support member. A clamp is provided, capable of clamping the harness wire in fixed relation to the elongate support member, and capable of being released to allow extension and retraction of the harness wire.
REFERENCES:
patent: 4337596 (1982-07-01), Kern et al.
patent: 4968210 (1990-11-01), Friederich
patent: 6203264 (2001-03-01), Combs, Sr.
Kenkel Philip J.
Van Mill Michael D.
Patel Rajnikant B.
Rothwell Figg Ernst & Manbeck
Unverferth Manufacturing Co., Inc.
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