Abstract:
A bracket for mounting an antenna along with a transmitter or receiver on a pole or wall. The bracket is able to pivot in two perpendicular planes, and can be quickly and precisely aimed in a given direction, and clamped. The bracket comprises an intermediate member pivotally mounted to a base member and a support member. The bracket includes a plurality of fins forming a heat sink unitary with the bracket to dissipate heat generated by the electronics.

Description:
FIELD OF THE INVENTION 
     This invention relates to the field of brackets, and more particularly to a mounting bracket for electronic instruments, the bracket being able to pivot in two perpendicular planes, and having a unitary heat sink. 
     BACKGROUND OF THE INVENTION 
     Certain types of electronic instruments are typically mounted on a building or pole or wall, and must be pointed in a given direction to function. With PCS and other wireless communication systems, antennas are aligned to provide coverage in predetermined sectors. In many cases, a transmitter, receiver, or amplifier is mounted along with the antenna. This equipment generates heat, and requires the use of heat sinks to prevent damage to the instrument. Brackets currently in use offer no such heat dissipating capability, so an additional heat sink must be installed. Active heat dissipating devices such as fans are prone to failure and require periodic maintenance. 
     Accordingly, there is a need to provide a mounting bracket having a heat sink unitary with the bracket. A bracket that can be quickly and precisely aimed in the given direction, and clamped. A bracket that is sturdy and vibration-free, yet cost-effective to manufacture. 
     SUMMARY OF THE INVENTION 
     In accordance with the present invention, there is provided a bracket for mounting an electronic instrument upon a foundation. The bracket comprises a base member having an outer surface and an opposite mounting surface for mounting the base member on the foundation. The bracket also comprises a support member having an outer surface and an opposite mounting surface for mounting the support member on the electronic instrument, the support member having a unitary heat sink for dissipating heat from the electronic instrument. The bracket further comprises an intermediate member extending between the base member and the support member. The intermediate member is pivotally attached to the base member. The intermediate member is pivotally attached to the support member. 
    
    
     BRIEF DESCRIPTION OF THE DRAWING 
     A more complete understanding of the present invention may be obtained from consideration of the following description in conjunction with the drawings, in which: 
     FIG. 1 is a perspective view of a mounting bracket constructed in accordance with the invention; 
     FIG. 2 is a perspective view of another mounting bracket constructed in accordance with the invention; 
     FIG. 3 is a side elevational view of the mounting bracket of FIG. 1; 
     FIG. 4 is a bottom plan view of the mounting bracket of FIG. 3; 
    
    
     DESCRIPTION OF THE PREFERRED EMBODIMENTS 
     Referring now to the drawings, and especially to FIG. 1, a bracket is shown at 10 for mounting an electronic instrument 8, such as an antenna and additional circuitry, upon a foundation (not shown), such as a building, poll or wall. The bracket 10 comprises a base member 12 having an outer surface 14 and an opposite mounting surface 16 for mounting the base member 12 on the foundation. The base member 12 includes a base pivot hole 18, and a base slot 19 generally parallel to the base pivot hole 18. The base slot 19 communicates with the base pivot hole 18 and extends to the base member outer surface 14. The base slot 19 has opposite sides 20. Base mounting screws 48 fasten the base member to the foundation. 
     The bracket 10 also comprises a support member 23 having an outer surface 23 and an opposite mounting surface 24 for mounting the support member 23 on the instrument 8. The support member 23 is attached to the instrument 8 proximal to the heat producing source in order to optimize thermal transfer from the heat producing source through the instrument 8 to the bracket 10. The support member 23 includes a support pivot hole 26, and a support slot 44, generally parallel to the support pivot hole 26. The support slot 44 communicates with the support pivot hole 26 and extends to the support member outer surface 23. The support slot 44 has opposite sides 46. The support member 23 further includes a plurality of fins 28 arrayed on the outer surface 23, forming a heat sink unitary with the support member 23 for dissipating heat from the instrument 8. The base member 12, as an option, could be made with identical fins and dimensions, to simplify production, warehousing, and shipping. 
     The bracket 10 further comprises an intermediate member 30 extending between the base member 12 and the support member 23. The intermediate member 30 is thermally connected to the support member 23 providing an additional element for dissipating heat into the environment as well as to base member 12. The intermediate member 30 includes an elongated element 32 extending between opposite first 34 and second 36 ends. The intermediate member 30 has a first arm 38 extending generally perpendicularly from the elongated element first end 34. The first arm 38 and the elongated element 32 lie within a first plane. The first arm 38 pivotally engages the base pivot hole 18. The intermediate member 30 has a second arm 40 extending generally perpendicularly from the elongated element second end 36. The second arm 40 and the elongated element 32 lie within a second plane generally perpendicular to the first plane. The second arm 40 pivotally engages the support pivot hole 26. 
     A first clamping means is provided for releasably clamping the first arm 38 in the base pivot hole 18. This allows adjustment of a base angle of the elongated element 32 with respect to the base member 12 and selective locking of the base angle, shown by arrow 50 in FIG. 4. The first clamping means includes at least one clamping screw 42 disposed transversely to the base slot 19 and threadingly engaging the base member 12. Thus, as the clamping screw 42 is advanced, the opposite sides 20 of the base slot 19 will be drawn together, thereby clamping the first arm 38 in the base pivot hole 18. 
     A second clamping means is provided for releasably clamping the second arm 40 in the support pivot hole 26. This allows adjustment of a support angle of the support member 22 with respect to the elongated element 30 and selective locking of the support angle, shown by arrow 52 in FIG. 3. The second clamping means includes at least one clamping screw 42 disposed transversely to the support slot 44 and threadingly engaging the support member 22, so that as the clamping screw 42 is advanced, opposite sides 46 of the support slot 44 will be drawn together, thereby clamping the second arm 40 in the support pivot hole 26. 
     Turning now to FIG. 2, another embodiment of the bracket is shown at 110. The bracket 110 comprises a base member 112 having an outer surface 114 and an opposite mounting surface 116 for mounting the base member 112 on the foundation. The base member 112 includes a base pivot hole 118, and a base slot 119 generally parallel to the base pivot hole 118. The base slot 119 communicates with the base pivot hole 118 and extends to the base member outer surface 114. The base slot 119 has opposite sides 120. 
     The bracket 110 also comprises a support member 123 having an outer surface 123 and an opposite mounting surface 124 for mounting the support member 123 on the instrument. The support member 123 includes a support pivot hole 126, and a support slot 144, generally parallel to the support pivot hole 126. The support slot 144 communicates with the support pivot hole 126 and extends to the support member outer surface 123. The support slot 144 has opposite sides 146. The support member 123 further includes a plurality of fins 128 arrayed on the outer surface 123, forming a heat sink unitary with the support member 123 for dissipating heat from the instrument. The base member 112, as an option, could be made with identical fins and dimensions, to simplify production, warehousing, and shipping. 
     The bracket 110 further comprises an intermediate member 130 extending between the base member 112 and the support member 123. The intermediate member 130 includes an elongated element 132 extending between opposite first 134 and second 136 ends. The intermediate member 130 has a first arm 138 extending generally perpendicularly from the elongated element first end 134. 
     The first arm 138 and the elongated element 132 lie within a first plane. The first arm 138 pivotally engages the base pivot hole 118. The intermediate member 130 has a second arm 140 extending generally perpendicularly from the elongated element second end 136. The second arm 140 and the elongated element 132 lie within a second plane generally perpendicular to the first plane. The second arm 140 pivotally engages the support pivot hole 126. 
     A first clamping means is provided for releasably clamping the first arm 138 in the base pivot hole 118. This allows adjustment of a base angle of the elongated element 132 with respect to the base member 112 and selective locking of the base angle. The first clamping means includes at least one clamping screw 142 disposed transversely to the base slot 119 and threadingly engaging the base member 112. Thus, as the clamping screw 142 is advanced, the opposite sides 120 of the base slot 119 will be drawn together, thereby clamping the first arm 138 in the base pivot hole 118. 
     A second clamping means is provided for releasably clamping the second arm 140 in the support pivot hole 126. This allows adjustment of a support angle of the support member 122 with respect to the elongated element 130 and selective locking of the support angle. The second clamping means includes at least one clamping screw 142 disposed transversely to the support slot 144 and threadingly engaging the support member 122, so that as the clamping screw 142 is advanced, opposite sides 146 of the support slot 144 will be drawn together, thereby clamping the second arm 140 in the support pivot hole 126. 
     Numerous modifications and alternative embodiments of the invention will be apparent to those skilled in the art in view of the foregoing description. Accordingly, this description is to be construed as illustrative only and is for the purpose of teaching those skilled in the art the best mode of carrying out the invention. Details of the structure may be varied substantially without departing from the spirit of the invention and the exclusive use of all modifications which will come within the scope of the appended claims is reserved.