Patent Application
20080067322
a is a bottom view of a cupola base according to one embodiment of the present invention.
b shows an expanded view of the cupola base features shown in
a is a perspective view of a fixture housing according to one embodiment of the present invention.
b shows an expanded view of the fixture housing ribs shown in
a shows a cupola base prior to engagement with a fixture housing according to one embodiment of the present invention.
b shows the cupola base shown in
a is a bottom view of a photocontrol receptacle according to one embodiment of the present invention.
b is an expanded view of the photocontrol receptacle connection member shown in
a is a perspective view of a cupola base according to one embodiment of the present invention.
b is an expanded view of the cupola base opening shown in
a shows a photocontrol receptacle and a cupola base prior to engagement according to one embodiment of the present invention.
b shows the photocontrol receptacle engaging the cupola base shown in
The cupola base 112 includes a window 114 to allow the photocontrol 106 to monitor the presence of light outside of the cupola base 112 and an opening 116 in the bottom of the cupola base 112. The cupola base 112 also includes one or more features (not shown) located on the bottom surface. The cupola base opening 116 is configured to receive the connection member 108 and includes notches 118 configured to receive the connection member flanges 110. When the connection member flanges 110 are received by the notches 118, the rotational movement of the photocontrol receptacle is restricted. As described in more detail below, some embodiments provide a cupola base opening 116 with notches 118 of different sizes and a connection member 108 with flanges 110 of different sizes such that the photocontrol receptacle 102 is received in the cupola base opening 116 in one orientation to ensure alignment between the cupola base window 114 and the photocontrol sensor.
The unit 100 also includes a fixture housing 120 adapted to be connected to a light fixture (not shown). The fixture housing 120 includes an opening 122 on the top of the fixture housing for receiving the connection member 108 and a plurality of ribs 124 surrounding the opening 122. The ribs 124 detachably engage the cupola base features to restrict rotational movement by the cupola base 112 relative to the housing 120. For instance, the cupola base features can receive the fixture housing ribs 124 and prevent movement except in the upward direction. As shown in
When the unit 100 is assembled, the connection member 108 may extend into the fixture housing 120 and may be attached to a spring 126. The spring 126 may be disk shaped and adapted to exert a downward force on the connection member 108 and thus the photocontrol receptacle 102. The base portion 104 exerts the downward force on the cupola base 112, thereby assisting in the engagement between the cupola base features and the fixture housing ribs 124. The spring 126 may be adapted to allow the cupola base 112 and photocontrol receptacle 102 to be lifted vertically upward a limited distance by a user. When the user lifts the cupola base 112, the photocontrol receptacle 102 is also lifted. After the user lifts the cupola base 112, the user may rotate the cupola base 112 such that the cupola base window 114 and, since the photocontrol receptacle 102 rotates with the cupola base 112, the photocontrol sensor are in a desired position.
The photocontrol receptacle 102, cupola base 112, and fixture housing 120 may be made from any suitable material. Examples of such material include polymers or metal molded, cast, or otherwise configured to selected shapes and specifications. The spring 126 may be made from metal or other material capable of having a resilient configuration and, in some embodiments, provide a recoil.
a and 3b illustrate one embodiment of the cupola base features 130 that may be used on a cupola base, such as cupola base 112. The features 130 may be located on the bottom surface 132 of the cupola base 112. The features 130 may be formed by extending areas of the cupola base outwardly relative to the cupola base bottom surface 132, thereby creating features 130 and depressed areas or grooves 134 between the features 130 or by creating grooves 134 in the bottom surface 132, thereby creating the features 130. The features 130 may include primary features 136 around an outer portion of the bottom surface 132 and at least one stop feature 138 closer to the center opening 116. In some cupolas, the wiring connecting the photocontrol to the light fixture and/or electric power source may be tangled if the cupola base 112 was allowed to rotate 360° or more. The stop feature 138 engages a stop rib (described below) associated with the fixture housing to prevent the cupola base 112 from rotating 360° or more. The features 130 may be any type of structure. Examples of features 130 include ribs, slots, protrusions, flanges, extensions, bumps, holes, knobs, hooks, and dimples.
a and 4b illustrate one embodiment of the fixture housing ribs 124 that may be used in a housing such as fixture housing 120. The ribs 124 may be located on the top surface 140 of the fixture housing 120 and surround the fixture housing opening 122. The ribs 124 may be formed using similar methods as those used to form the cupola base features. For instance, areas of the fixture housing outer surface 148 may be extended inwardly relative to the fixture housing top surface 140, thereby creating ribs 124 and lowered areas 142 between the ribs 124 or portions of the top surface 140 may be added, thereby creating ribs 124 and areas 142 between the ribs 124. When the ribs 124 engage or connect with the features 130, as shown in
In some embodiments of the present invention, the cupola base does not include features or only includes a stop feature and the fixture housing does not include ribs or only includes a stop rib. In these embodiments, the cupola base may be rotated with or without lifting the cupola base and, due to the engagement of the photocontrol receptacle and the cupola base described in more detail below, the photocontrol receptacle, and thus the photocontrol sensor, does not rotate relative to the cupola base. Furthermore, embodiments of the present invention may include any desired number of ribs and features.
a and 6b show one embodiment of the bottom of a photocontrol receptacle 102. The photocontrol receptacle 102 includes a base portion 104 and a connection member 108 extending from the base portion 104. The connection member 108 may include a central portion 152 and support flanges 154. The support flanges 154 may extend from the base portion 104 to the central portion 152 for supporting the connection member 108 and decreasing the chance that the connection member 108 becomes disconnected from the base portion 104. The support flanges 154 may include connection flanges 110 that are adapted to engage notches 118 in the cupola base opening 116, as shown in
In some embodiments, the support flanges 154 include at least one flange 160 having a different size than the other support flanges 154. The cupola base 112 may include at least one notch 162 having a different size than the other notches 118. The different sized notch 162 may be configured to only receive the different sized flange 160, thereby requiring the photocontrol receptacle to be oriented in a particular direction relative to the cupola base 112. For instance, the photocontrol receptacle 102 may be required to engage the cupola base 112 in a direction such that when the photocontrol is connected to the photocontrol receptacle 102, the photocontrol sensor is aligned with a cupola base window 114.
The foregoing description of the exemplary embodiments of the invention has been presented only for the purposes of illustration and description and is not intended to be exhaustive or to limit the invention to the precise forms disclosed. Many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to explain the principles of the invention and their practical application so as to enable others skilled in the art to utilize the invention and various embodiments and with various modifications as are suited to the particular use contemplated. Alternative embodiments will become apparent to those skilled in the art to which the present invention pertains without departing from its spirit and scope.
