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Floor lamp
Wednesday, 06 December 2006

Lamps or lights are commonly utilized to illuminate an object or particular area. In the home, lights maybe utilized to illuminate wall-hanging artwork or a specific location such as a fireplace mantle. A lamp is generally viewed as a piece of furniture holding one or more electric light bulbs. The electric light bulbs operate as an artificial source of visible illumination. Lamps used for illumination or decoration typically include a cord, one end of which is plugged into a household outlet and connected at the other end to a base of the lamp. Mounted on the base is typically a lamp body or column and fixed to the lamp body opposite the base is an electrical socket into which an electric light bulb can be removably secured. Floor lamps, desk lamps and table lamps are all very well known in the lighting industry. Today, there are a massive number of stand-alone floor electric lamps being manufactured and distributed through our market. The use of floor lamps of various designs and configurations for the purpose of illuminating intended areas are known to consist basically of familiar and obvious structural configurations. Most floor lamps in use today are constructed with a circular base, a vertical post concentrically secured to the base and carrying some kind of an adjustable head with a socket and a shade. Such floor lamps designed to be used adjacent chairs or sofas tend to be heavy and generally have a long vertical post. Other such floor lamps designed to be used on desk tops generally have a short vertical post. The typical floor lamp consists of a stand in the form of a rod or pole anchored on a weighted base and carrying a socket for a light bulb, the pole also supporting a harp to which a lampshade is attachable. Generally floor lamps employ a pole or post having adjustable ball and socket light supports attached to the pole. The benefit of such floor lamps is that they may be quickly located and installed in one place or another.

Many configurations of floor lamps are currently available. Floor lamps have vertical posts or support structures that typically are attached to the center of a circular base, or have legs that are symmetrically placed about the vertical post or support structure. To facilitate the manufacturing and packing due to the height limitation, floor lamps generally comprise a bulb socket, a lamp base, and three sections of supporting rods or tubes. The elongated post is generally consisted of several tubes that can be conveniently detached from each other. Several methods have been known and used in connecting each two adjacent tube sections into a line. For example, two tube sections may be connected into a line by means of a screw joint. In another known method, two tube sections may be connected into a line by engaging a spring retainer on one tube section into a retaining hole on the other tube section. The top section of the supporting tube is usually mounted with a rotary switch to control the power supply. The power wires mounted on the rotary switch have only a given additional length without any fixedly fastening means. A reflector member is disposed internally of the pan, which has a concave reflecting surface supported by a planar lip. The planar lip includes a holding means for receiving a high voltage halogen bulb, which is facing up toward the ceiling of our home, and also for supporting a protective shielding glass which is utilized to protect the light bulb from accidentally damage. Touch responsive sockets have been designed for receiving an electric light bulb and for controlling the power delivered to the light bulb in response to the touching of an electrically conductive part of the floor lamp. When parabolic reflector fixtures are used as in the floor lamps, the parabolic reflector is generally very flat and one of the characteristics of prior art reflector fixtures of this type is that the light can be blinding to an observer. The blinding effect of the light can be avoided by shielding the light source in a cup so that a direct line of sight between a person and the light source cannot occur.

In floor lamps, a rotary dimmer switch is generally fastened inside the lamp support thereof and controlled by a rotatable control shaft to regulate a variable resistor so as to change the intensity of light. In other floor lamps, the power switch is installed on the lamp base or on the wires outside the lamp body. The power wires are directly connected to the bulb socket with a given length to facilitate the packing and disassembling operation. Many floor lamps contain multi-position switches for changing the level of illumination provided by the general area lighting means incorporated within such lamps. Halogen bulbs are provided with very high wattage of from 100W up to 500W and can reach temperatures well over 350.degree.. Thus, a halogen floor lamp that has a typical large diameter inverted shade, in which the halogen bulb is exposed can readily come in contact with loose articles such as decorative household items and more particularly to freely hung draperies. Low light level lamps, commonly referred to as night lights, are also well known in the lighting industry and are constructed having many different configurations. It is also known to incorporate a low light level light bulb into a floor lamp. In many instances, the incorporation of the low light level light bulb accomplishes the additional function of providing a more decorative appearance to the body of the lamp. A standard floor lamp stands rigidly rising up vertically ending above and over our head level. The floor lamp has a general area lighting lamp head which includes an upwardly directed dome, bowl or pan. With floor lamps, there is a need for a fairly substantial base portion that supports the remainder of the floor lamp.