Hinge for repairing a column-mounted device

Abstract

A controlled motion hinge assembly includes: a base having a first actuator mount; a pivot arm having a second actuator mount; a hinge pivotally connecting the base to the pivot arm to be movable between an extended position and a retracted position; and an actuator shaft. The shaft has a first end, a second end, and a threaded body extending between the first and second ends. The first end is configured to receive a drive torque about an axis of the actuator shaft. The second end is rotatably connected to a second actuator mount but fixed to the second actuator mount along the axis of the actuator shaft. The threaded body engages a threaded hole in the first actuator mount such that rotation of the body causes movement of the first actuator mount along the axis of the actuator shaft. A rod assembly and a method for modifying a rod using a controlled motion hinge are also provided.

Description

[0001] Cross-references to related applications

[0002] This application claims priority to U.S. Provisional Patent Application No. 63 / 065,187, filed August 13, 2020, entitled “HINGE FOR SERVICING POLE-MOUNTEDEQUIPMENT,” the entire disclosure of which is incorporated herein by reference for all purposes. Technical Field

[0003] The present invention relates to a hinge system for mounting rods of a certain length together, and particularly to a hinge system for a rod assembly having a lower rod and an upper rod, wherein the hinge system is configured to allow an operator to retract the upper rod toward the ground to provide maintenance for components mounted on the end of the upper rod. Background Technology

[0004] There has long been a need to mount various types of equipment on poles. For example, it is often desirable to mount signs, streetlights, surveillance equipment, and telecommunications equipment at high elevations to better perform their various functions. Pole-mounted structures can be erected to hold the equipment when buildings or other existing structures are unavailable. It is also common to retrofit existing poles with new equipment. For example, telecommunications antennas or surveillance cameras can be mounted directly on existing streetlight poles or via extension poles that are connected to raise the pole above the existing one.

[0005] Such column-mounted equipment may be difficult to repair.

[0006] In some cases, poles may lack any access features, necessitating the use of personnel lifts (e.g., bucket trucks or elevator platforms) for maintenance. Operating such equipment can be hazardous, especially on uneven ground, and incurs maintenance costs associated with renting and / or operating the equipment. Personnel lifts also require specialized training to operate. Using such equipment may also involve road closures, traffic route changes, obtaining work permits, and other complexities and inconveniences.

[0007] In other cases, poles may have access features that limit the need for personnel lifts. For example, a pole may have a cable and pulley system for lowering equipment for servicing. Such systems typically require power equipment to raise and lower the equipment, and they are limited by the pole's original height and cannot be used for servicing equipment that is extended to the original pole via an extension pole.

[0008] The aforementioned problems can be addressed at least partially by providing a two-part pole with a pivot operable at ground level. For example, so-called base-hinged poles (such as those available from Abacus Lighting Ltd. in the UK) have hinges located very close to the ground (less than two meters) to allow maintenance technicians to raise and lower the upper pole section from the ground. In such a device, most of the components are located above the pivot point, and the weight of the upper pole and attached equipment must be supported during raising and lowering. To address this problem, the pole can be provided with an external spring balance or mechanical or hydraulic actuator permanently attached to the pole, or only attached during raising and lowering. Examples of such devices are shown in U.S. Patents Nos. 5,634,759 and 5,899,651 and British Patent GB 2,205,392 B. In some other cases, the weight of the upper pole and equipment is managed by integrally forming the balance into the pole, as shown in British Patent GB 2,396,631 B. As a general rule, base articulated posts require additional equipment and training and must be configured to provide protection against misuse by unauthorized users and vandals. For example, UK Patent GB 2551 772 B provides a locking system to prevent unauthorized use of base articulated posts. Another disadvantage of base articulated posts is that they are only intended for use as new devices and not for integration with existing posts.

[0009] It has been found that there are ways to improve the current state of articulated columns. Summary of the Invention

[0010] In a first exemplary aspect, a controlled motion hinge assembly is provided, comprising: a base; a first actuator mount rotatably connected to the base for rotation about a rotation axis of the first mount; a pivot arm pivotally connected to the base for pivoting about an arm pivot axis parallel to the rotation axis of the first mount; a second actuator mount rotatably connected to the pivot arm for rotation about a second mount rotation axis parallel to and spaced apart from the arm pivot axis; and a hinge pivotally connecting the base to the pivot arm. The pivot arm is movable relative to the base about the arm pivot axis between an extended position and a retracted position, in the extended position being spaced apart by a first distance from the rotation axis of the first mount and the rotation axis of the second mount by a second distance, the second distance being less than the first distance. An actuator shaft is provided to control the position of the pivot arm. The actuator shaft has a first end, a second end, and a threaded body extending along the actuator shaft axis between the first and second ends. The first end is configured to receive a drive torque about the actuator shaft axis. The second end is connected to a second actuator mount to be rotatable about the actuator shaft axis at a fixed position along the actuator shaft axis. The threaded body threadedly engages with a threaded hole in the first actuator mount. The threaded hole extends along a hole axis perpendicular to the axis of rotation of the first mount. The interaction between the threaded body and the threaded hole causes the application of the drive torque to cause the first actuator mount to move along the actuator shaft axis toward and away from the second actuator mount, thereby moving the pivot arm toward a retracted position and an extended position, respectively.

[0011] In some exemplary embodiments of the controlled motion hinge assembly, the pivot arm is displaced at an angle greater than 90 degrees about the arm pivot axis between the extended position and the retracted position.

[0012] In some exemplary embodiments of the controlled motion hinge assembly, the pivot arm is displaced at an angle of at least 110 degrees about the arm pivot axis between an extended position and a retracted position.

[0013] In some exemplary embodiments of the controlled motion hinge assembly, the pivot arm is displaced at an angle of at least 135 degrees about the arm pivot axis between an extended position and a retracted position.

[0014] In some exemplary embodiments of the controlled motion hinge assembly, the base and pivot arm are configured such that when the pivot arm is in the extended position, the base and pivot arm contact at a corresponding stop surface adjacent to the hinge, thereby preventing rotation about the arm pivot axis beyond the extended position.

[0015] In some exemplary embodiments of the controlled motion hinge assembly, the base is configured to be fastened to an adjacent structure, wherein the arm pivot axis is perpendicular to the direction of gravity.

[0016] In some exemplary embodiments of the controlled motion hinge assembly, the base is configured to be fastened to an adjacent structure in a plurality of different orientations, wherein the arm pivot axis is perpendicular to the direction of gravity in each of the plurality of different orientations.

[0017] In some exemplary embodiments of the controlled motion hinge assembly, the adjacent structure includes a first rod extending in the direction of gravity.

[0018] In some exemplary embodiments of the controlled motion hinge assembly, the pivot arm is configured to be fastened to the second link such that the second link is parallel to the first link when the pivot arm is in the extended position.

[0019] In some exemplary embodiments of the controlled motion hinge assembly, the pivot arm is configured to be fastened to a second rod extending from a proximal second rod end connected to the pivot arm to a distal second rod end connected to one or more objects of an electrical device.

[0020] In some exemplary embodiments of the controlled motion hinge assembly, the one or more objects of the electrical device include one or more objects of the wireless transmission device.

[0021] In some exemplary embodiments of the controlled motion hinge assembly, the hinge includes a first hinge bracket mounted to a base, a second hinge bracket mounted to a pivot arm, and a pivot pin connecting the first hinge bracket to the second hinge bracket.

[0022] In some exemplary embodiments of the controlled motion hinge assembly, the first shaft end includes a drive fitting.

[0023] In some exemplary embodiments of the controlled motion hinge assembly, the drive fitting is not closed when the hinge assembly is configured for use.

[0024] In some exemplary embodiments of the controlled motion hinge assembly, the drive accessory includes an eyelet.

[0025] In some exemplary embodiments of the controlled motion hinge assembly, the assembly further includes a drive member comprising a hook configured to be removably inserted into the eyelet and to apply a drive torque to the eyelet when inserted.

[0026] In some exemplary embodiments of the controlled motion hinge assembly, the drive member includes an elongated shaft having a hook at one end and a crank arm at the other end.

[0027] In some exemplary embodiments of the controlled motion hinge assembly, the assembly further includes a sheath surrounding a threaded body between a first actuator mount and a second actuator mount.

[0028] In some exemplary embodiments of the controlled motion hinge assembly, the sheath is flexible between a first configuration and a second configuration. In the first configuration, when the pivot arm is in the extended position, the sheath covers the entire threaded body between the first actuator mount and the second actuator mount. In the second configuration, when the pivot arm is in the retracted position, the sheath covers the entire threaded body between the first actuator mount and the second actuator mount.

[0029] In some exemplary embodiments of the controlled motion hinge assembly, the sheath also surrounds the second actuator mount.

[0030] In some exemplary embodiments of the controlled motion hinge assembly, the second shaft end is connected to the second actuator mount via one or more bushings or bearings.

[0031] In some exemplary embodiments of the controlled motion hinge assembly, the second shaft end is connected to the second actuator mount via a thrust bearing assembly configured to hold the second shaft end to the second actuator mount at a fixed position relative to the actuator shaft axis.

[0032] In another exemplary aspect, a lever assembly is provided, the lever assembly comprising: a first lever extending in the direction of gravity from a lower first lever end to an upper first lever end, the lower first lever end being configured to be fastened to a bottom surface and the upper first lever end being configured to overhang above the bottom surface; a second lever extending from a proximal second lever end to a distal second lever end; and a controlled motion hinge assembly. The controlled motion hinge assembly includes: a base fastened adjacent to an upper first rod end; a pivot arm fastened to a proximal second rod end; a hinge pivotally connecting the base to the pivot arm such that the pivot arm is movable relative to the base about an arm pivot axis oriented perpendicular to the direction of gravity, wherein the pivot arm is movable between an extended position and a retracted position, in the extended position the second rod extends along the direction of gravity, with the distal second rod end above the proximal second rod end, and in the retracted position the second rod is oriented such that the distal second rod end is below the proximal second rod end; and an actuator configured to be manually operated by an operator located on a bottom surface to selectively move the pivot arm between the extended and retracted positions. When the pivot arm is in the retracted position, the distal second rod end is positioned for maintenance by an operator located on the bottom surface.

[0033] In some exemplary embodiments of the lever assembly, the pivot arm is displaced at an angle greater than 90 degrees about the arm pivot axis between the extended position and the retracted position.

[0034] In some exemplary embodiments of the lever assembly, the pivot arm is displaced at an angle of at least 110 degrees about the arm pivot axis between an extended position and a retracted position.

[0035] In some exemplary embodiments of the lever assembly, the pivot arm is angularly displaced by at least 135 degrees about the arm pivot axis between an extended position and a retracted position.

[0036] In some exemplary embodiments of the rod assembly, the controlled motion hinge assembly includes a threaded body configured to engage a base and a pivot arm to move the pivot arm between an extended position and a retracted position, and has an exposed drive fitting positioned adjacent to the base.

[0037] In some exemplary embodiments of the lever assembly, the lever assembly further includes a drive member having a first end and a second end, the first end being removably connected to a drive accessory, and the second end being configured to receive a drive torque applied by an operator located on a bottom surface when the first end is connected to the drive accessory.

[0038] In some exemplary embodiments of the lever assembly, the second end of the drive member includes a crank arm.

[0039] In some exemplary embodiments of the lever assembly, the controlled motion hinge assembly further includes: a first actuator mount pivotally connected to the base to rotate about a first mount rotation axis parallel to the arm pivot axis, wherein the first actuator mount includes a threaded hole extending along a hole axis perpendicular to the first mount rotation axis; and a second actuator mount pivotally connected to the pivot arm to rotate about a second mount rotation axis parallel to and spaced from the arm pivot axis, and parallel to the arm pivot axis; wherein a threaded body is positioned on an actuator shaft having a first shaft end, a second shaft end, and a threaded body extending along the actuator shaft axis between the first and second shaft ends. Furthermore, the first shaft end is configured to receive drive torque about the actuator shaft axis, and the second shaft end is connected to the second actuator mount to be able to rotate about the actuator shaft axis at a fixed position along the actuator shaft axis. The threaded body is threadedly engaged with the threaded hole of the first actuator mount such that the application of the drive torque causes the first actuator mount to move along the actuator shaft axis toward and away from the second actuator mount, thereby moving the pivot arm toward the retracted position and the extended position, respectively.

[0040] In some exemplary embodiments of the rod assembly, the second shaft end is connected to the second actuator mount via a thrust bearing assembly configured to hold the second shaft end to the second actuator mount at a fixed position relative to the actuator shaft axis.

[0041] In some exemplary embodiments of the rod assembly, the base and the pivot arm are configured such that, when the pivot arm is in the extended position, the base and the pivot arm contact at a corresponding stop surface adjacent to the hinge, thereby preventing rotation about the arm pivot axis beyond the extended position.

[0042] In some exemplary embodiments of the rod assembly, the base is configured to be fastened to the first rod in a plurality of different orientations, wherein the arm pivot axis is perpendicular to the direction of gravity in each of the plurality of different orientations.

[0043] In some exemplary embodiments of the rod assembly, the distal second rod end is configured to mount one or more electronic devices positioned for maintenance by an operator located on the bottom surface when the pivot arm is in the retracted position.

[0044] In some exemplary embodiments of the rod assembly, the lower first rod end is at least 3 meters away from the upper first rod end.

[0045] In some exemplary embodiments of the rod assembly, the first length from the bottom surface to the pivot arm axis is no more than two meters greater than the second length from the pivot arm axis to the distal second rod end.

[0046] In another exemplary aspect, a method for modifying a rod assembly is provided, the rod assembly including a first rod extending in the direction of gravity from a lower first rod end fastened to a base surface to an upper first rod end overhanging above the base surface. The method includes: providing a controlled motion hinge assembly including: a base; a pivot arm having a mounting structure; a hinge pivotally connecting the base to the pivot arm such that the pivot arm is movable relative to the base about an arm pivot axis oriented perpendicular to the direction of gravity, wherein the pivot arm is movable between an extended position and a retracted position, in the extended position the mounting structure is along the arm pivot axis relative to the direction of gravity, and in the retracted position the mounting structure is located below the arm pivot axis relative to the direction of gravity; and an actuator configured to be manually operated by an operator located on the base surface to selectively move the pivot arm between the extended and retracted positions. The method further includes: fastening the base to the upper first rod end; providing a second post extending from the proximal second rod end to the distal second rod end; and fastening the proximal second rod end to the pivot arm such that when the pivot arm is in the extended position, the second rod is oriented above the first rod along the direction of gravity, and when the pivot arm is in the retracted position, the distal second rod end is located below the pivot axis of the arm.

[0047] In some exemplary embodiments of the method, when the pivot arm is in the retracted position, the distal second rod end is positioned for maintenance by an operator located on the bottom surface.

[0048] In some exemplary embodiments of the method, the pivot arm is displaced at an angle greater than 90 degrees around the pivot axis between the extended position and the retracted position.

[0049] In some exemplary embodiments of the method, the pivot arm is displaced at an angle of at least 110 degrees about the pivot axis between the extended position and the retracted position.

[0050] In some exemplary embodiments of the method, the pivot arm is displaced at an angle of at least 135 degrees about the pivot axis between the extended position and the retracted position.

[0051] In some exemplary embodiments of the method, the controlled motion hinge assembly includes a threaded body configured to engage a base and a pivot arm to move the pivot arm between an extended position and a retracted position, and has an exposed drive fitting positioned adjacent to the base.

[0052] In some exemplary embodiments of the method, the method includes manually operating the actuator from a position on the bottom surface adjacent to the lower first rod end to move the pivot arm from a retracted position to an extended position.

[0053] In some exemplary embodiments of the method, the method includes mounting one or more parts of an electrical device onto a distal second rod end before operating the actuator from a position adjacent to the lower first rod end on the bottom surface to move the pivot arm from a retracted position to an extended position. Attached Figure Description

[0054] The above and other aspects and features of the invention will become more apparent to those skilled in the art from the detailed description of exemplary embodiments of the invention with reference to the accompanying drawings, wherein like features are indicated by like reference numerals.

[0055] Figure 1 This is an isometric view of an exemplary embodiment of a controlled motion hinge assembly.

[0056] Figure 2 yes Figure 1 A top plan view of the actuator system of the embodiment, along Figure 3 Line II-II is shown.

[0057] Figure 3 yes Figure 1 A front view of the actuator system.

[0058] Figure 4 yes Figure 1 An exploded isometric view of a controlled motion hinge assembly.

[0059] Figures 5A-5CThis is an isometric view of an embodiment of the controlled motion hinge assembly installation, shown in its extended position. Figure 5A ), retraction position ( Figure 5C ) and middle position ( Figure 5B )middle.

[0060] Figure 6 This is a side view showing another controlled motion hinge assembly mounted in an extended position, with an exemplary drive member attached thereto.

[0061] Figure 7 It is a side view showing another controlled motion hinge assembly mounted in an extended position, with another exemplary drive member attached thereto.

[0062] Figure 8 A rod assembly with a controlled motion hinge assembly is shown, depicted in an extended and retracted position. Detailed Implementation

[0063] Although the invention has been described and illustrated herein with reference to specific embodiments, the invention is not intended to be limited to the details shown. Rather, various modifications to the details may be made within the scope and equivalents of the claims without departing from the invention. In the drawings, the same reference numerals denote the same elements.

[0064] Terms relating to attachment, connection, etc. (such as “installation,” “connection,” and “interconnection”) refer to a relationship in which structures are directly or indirectly fastened or attached to each other, either through an intermediate structure, and to a movable or rigid attachment or relationship, unless otherwise expressly stated.

[0065] Referring now to the accompanying drawings, the exemplary embodiments described and illustrated herein generally relate to a controlled motion hinge assembly 100 having a base 102 and a pivot arm 104 attached to the base 102 via a hinge 106. The base 102 and pivot arm 104 are shown in this example as tubular members having a square cross-sectional shape. For example, the base 102 and pivot arm 104 can be formed from a 1 square inch welded steel tubing, extruded aluminum, etc. Such materials are readily available and provide simplicity in processing. Other embodiments may use other materials (such as tubular steel or aluminum with a circular cross-section) or components having other cross-sectional shapes (such as L-shapes, H-shapes, etc.). The base 102 and pivot arm 104 may also be made from constituent parts, composite materials, cast as a single piece (e.g., including other components with bolted connections as described below), etc.

[0066] An exemplary hinge 106 includes: a hinge pin 108 fastened in a double-shear configuration to a hinge leaf 110, which is fastened to a base 102; and a pair of hinge plates 112 fastened to a pivot arm 104. A single hinge pin 108 is shown, but in other embodiments two or more separate and axially spaced hinge pins may be used. The hinge pin 108 may be a solid pin (as shown) or a tubular pin or rivet known in the art. The hinge 106 connects the base 102 to the pivot arm 104 such that the pivot arm 104 is movable relative to the base about an arm pivot axis 114 collinear with the hinge pin 108. The hinge pin 108 and the arm pivot axis 114 may be offset from the base 102 and the pivot arm 104 (as shown) to facilitate a greater range of motion.

[0067] The hinge assembly 100 also includes an actuator system 116 configured to control rotation of the pivot arm 104 relative to the base 102. In the example shown, the actuator system 116 includes a first actuator mount 118 fixed to the base 102, a second actuator mount 120 fixed to the pivot arm 104, and an actuator shaft 122 operatively connected to the first actuator mount 116 and the second actuator mount 118 (see [link to documentation]). Figure 2 and Figure 4 ).

[0068] like Figure 2 and Figure 4As best shown, a first actuator mount 118 is rotatably connected to a base 102 for rotation about a first mount rotation axis 124, and a second actuator mount is rotatably connected to a pivot arm 104 for rotation about a second mount rotation axis 126. For example, the first actuator mount 118 includes a pair of collinear mounting pins 118' extending along the first mount rotation axis 124 and rotatably engaging with a corresponding pair of collinear first mounting holes 128 disposed on the base 102. The first mounting holes 128 may be integrally formed with the base 102, or they may be formed separately and attached to the base 102. In this example, the first mounting holes 128 are disposed in corresponding first mounting plates 130, which are fastened to the base 102 to rigidly hold the first mounting holes 128 in place relative to the base 102. Similarly, the second actuator mount 120 includes a pair of collinear mounting pins 120' extending along the rotation axis 126 of the second mount and rotatably fitted into a corresponding pair of collinear second mounting holes 132 provided on the pivot arm 104. The second mounting holes 132 are fastened to the pivot arm 104 by being formed in the hinge plate 112, but alternatively, they can be provided in a corresponding second mounting plate separate from the hinge plate 112. In this example, the first mounting plate 130 and the hinge plate 112 are fastened to the base 102 and the pivot arm 104 respectively by bolts, washers, and nuts, but other fastening mechanisms can be used in other cases.

[0069] In the example shown, the first actuator mount 118, the second actuator mount 120, and the hinge pin 108 are secured at each end by a corresponding spring clip 136, which fits into a corresponding annular groove 138 on each pin 108, 118', 120'. This provides a relatively simple and durable structure while allowing for regular maintenance or repair.

[0070] The first mounting axis of rotation 124, the second mounting axis of rotation 126, and the arm pivot axis 114 are parallel to each other and spaced apart (i.e., parallel but not collinear). Therefore, rotation of the pivot arm 104 relative to the base 102 causes the distance between the first mounting axis of rotation 124 and the second mounting axis of rotation 126 to change with angular rotation, a behavior consistent with familiar trigonometric functions. The actuator system 116 is configured to control this movement by rotating the actuator shaft 122.

[0071] An exemplary actuator shaft 122 has a threaded body 140 extending along the actuator shaft axis 142 between a first shaft end 144 and a second shaft end 146. The threaded body 140 is screwed into a corresponding threaded hole 148 extending through a first actuator mount 118 along a hole axis 150 perpendicular to the first mount rotation axis 124. When the threaded body 140 is mounted in the threaded hole 148, the actuator shaft axis 142 and the hole axis 150 are collinear. Rotation of the threaded body 140 relative to the first actuator mount 118 causes the first actuator mount 118 and the threaded body 140 to be displaced relative to each other along the collinear actuator shaft axis 142 and hole axis 150. The threaded body 140 and the threaded hole 148 may each have any suitable external and internal thread configurations. Such threads are preferably selected to have a self-locking pitch angle to prevent the weight of the pivot arm 104 and the attached equipment from driving the thread body 140 in the opposite direction. The threads can have any suitable form, such as square, triangular or trapezoidal (e.g., so-called trapezoidal (Acme) thread or trapezoidal metric thread form).

[0072] A first shaft end 144 is used to rotate the actuator shaft 122. For this purpose, the first shaft end protrudes from a threaded hole 148 in the first actuator mount 118, where it is configured to receive drive torque about the actuator shaft axis 142. The first shaft end 144 can have any suitable shape to receive such drive torque. In this example, the first shaft end 144 includes a drive fitting 152 in the shape of an eyelet. As described below, this eyelet-type drive fitting 152 can engage with a hook or crossbar to transmit drive torque to the actuator shaft 122. The drive fitting 152 can be attached to the first shaft end 144 using any suitable attachment system, such as corresponding mating threads, friction fits, welding, cotter pins, key shaft connections, etc. The first shaft end 144 can also have an integrally formed drive fitting 152. For example, the first shaft end 144 can be formed with a square or hexagonal outer profile to be received in a corresponding drive socket, or it can have an internal socket to receive an inserted tool.

[0073] In some cases, hinge assembly 100 may be provided with a first shaft end 144 configured to receive drive fitting 152, but without drive fitting 152 itself. For example, hinge assembly 100 may be provided to an end user or retailer who will attach their desired drive fitting 152 to the first shaft end 144. In other cases, the first shaft end 144 may simply comprise a continuation of the threaded body 140. In still other cases, the first shaft end 144 may comprise a bare cylindrical shape that may be welded or machined to mate with a particular drive fitting 152. As yet another example, the first shaft end 144 may comprise a tapered shape, such as a Morse taper, for frictional engagement with drive fitting 152. It should be understood that in any of these examples, the first shaft end 144 is configured to receive drive torque by means of extending from the first actuator mount 118 to connect to some drive fitting. Other alternatives and variations will be apparent to those skilled in the art based on this disclosure.

[0074] The second shaft end 146 is connected to the second actuator mount 120 to be rotatable about the actuator shaft axis 142, but is axially fixed to the second actuator mount 120 to be held in a fixed position relative to the second actuator mount along the actuator shaft axis 142. For example, in the illustrated embodiment, the second shaft end 146 extends through a hole 154 (which passes through the second actuator mount 120) and is fastened on each side of the hole 154 to resist axial movement. In this case, the second shaft end 146 is fastened by a nut 156 and a washer 158 to resist axial movement toward the first shaft end 142, and by a bushing 160 and a thrust bearing 162 to resist axial movement toward the second shaft end 146. The nut 156 is screwed onto the end of the second shaft end 146, which may include a continuation of the threaded body 140, and the washer 158 facilitates rotation of the actuator shaft 122 relative to the second actuator mount 120. Bushing 160 is axially and rotatably fixed to the second shaft end 146 by bonding (adhesive, epoxy resin, etc.), friction fit, pin, machined shoulder, one or more nuts, etc., and thrust bearing 162 is positioned between bushing 160 and second actuator mount 120 to allow low-friction relative rotation between actuator shaft 122 and second actuator mount 120. In this case, the weight of pivot arm 104 and the connected equipment is primarily supported on the joint between second actuator mount 120 and bushing 160, so it is desirable for thrust bearing 162 to reduce operating friction while lowering and raising pivot arm 104. In other cases, different types of friction-reducing elements (e.g., lubricated metal-to-metal joints, lubricated bushings, etc.) can be used.

[0075] Actuator system 116 may also include various features to enhance maintainability and service life. For example, one or more grease fittings (not shown) may be provided at the location of frictional contact between the components. As another example, actuator system 116 may include a protective shield or sleeve 164 surrounding a portion of threaded body 140 located between first actuator mount 118 and second actuator mount 120. Such sleeve 164 may include an accordion-shaped body to allow expansion and contraction to completely cover that portion of threaded body 140 throughout its range of motion. Sleeve 164 may also wrap around second actuator mount 120 and include a cap 166 to completely enclose second shaft end 146.

[0076] exist Figures 5A-5C The installation and operation of the hinge assembly 100 are shown in the figure. Figure 5A A hinge assembly 100 is shown, wherein a base 102 is attached to a first link 168 and a pivot arm 104 is attached to a second link 170. It should be understood that the first link 168 can be replaced by any adjacent structure capable of supporting the assembled components, such as a building, rafters, etc. Furthermore, the second link 170 can be replaced by other structures, such as signs, etc.

[0077] Figure 5A The hinge assembly 100 is shown in its extended position, and Figure 5C The hinge assembly 100 is shown in the retracted position. Figure 5B It is the horizontal position between the extended position and the retracted position. In the extended position, the rotation axis 124 of the first mounting component and the rotation axis 126 of the second mounting component are separated by a first distance D1, while in the retracted position, the rotation axis 124 of the first mounting component and the rotation axis 126 of the second mounting component are separated by a second distance D2, wherein the second distance D2 is less than the first distance D1.

[0078] The actuator system 116 operates by applying torque to the drive fitting 152, causing the actuator shaft 122 to rotate about the actuator shaft axis 142 and changing the distance between the first mounting axis of rotation 124 and the second mounting axis of rotation 126. For example, if the threads of the threaded body 140 and the threaded hole 148 are right-hand threads, when viewed from the first shaft end 144 to the second shaft end 146, clockwise rotation of the actuator shaft 122 causes the first actuator mounting 118 to move along the actuator shaft 122 toward the first shaft end 144, while the second actuator mounting 120 remains fixed at the second shaft end 146 relative to the actuator shaft axis 142. This movement causes the first mounting axis of rotation 124 to move away from the second mounting axis of rotation 126 and toward the second shaft end 146. Figure 5AThe extended position shown in the diagram moves. Conversely, counterclockwise rotation of actuator shaft 122 causes the first actuator mount 118 to move along actuator shaft 122 toward the second shaft end 126, which causes the first mount rotation axis 124 to move toward the second mount rotation axis 126, and toward... Figure 5C The retracted position shown has been moved.

[0079] The positions of the first actuator mount 118, the second actuator mount 120, and the hinge 106 affect the overall range of motion of the pivot arm 104 relative to the base 102, as will be understood by applying the familiar principle of trigonometry. It should be understood that the hinge assembly 100 can be configured to provide a wide range of rotational motion between the pivot arm 104 and the base 102. For example, the actuator system 116, the base 102, the pivot arm 104, and the hinge 106 can be configured such that the pivot arm 104 displaces at an angle greater than 90 degrees between its fully extended and fully retracted positions about the arm pivot axis 114. Even greater displacements are possible. For example, the pivot arm 104 can be configured to rotate at least 110 degrees, or at least 135 degrees or more, relative to the base 102 about the arm pivot axis 114. The advantages of such a large range of motion are discussed below.

[0080] Preferably, but not necessarily, the first actuator mount 118 and the second actuator mount 120 are positioned such that the straight line between the rotation axis 124 of the first mount and the rotation axis 126 of the second mount does not intersect the pivot axis 114 of the arm at any point during the travel range. This prevents the components from presenting an "eccentric" position, in which the applied force moving the second actuator mount 120 toward the first actuator mount 118 causes the components to contact each other in a position that prevents relative rotation. Such eccentric movement can be prevented by providing travel stops that prevent the components from presenting an eccentric position. For example, the base 102 and the pivot arm 104 may include corresponding stop surfaces 172, 174, which are positioned adjacent to the hinge 106 and are positioned to contact each other when the pivot arm 104 is in the extended position to prevent further rotation beyond the extended position.

[0081] If desired, the hinge assembly 100 may also include one or more locks or locking features that can be used to hold the pivot arm 104 in an extended position or in any other position relative to the base 102. For example, the hinge plate 112 may include a hole 176 corresponding to a hole 176' through the base 102 to allow a locking pin to pass through it when the component is in the extended position.

[0082] Figure 6 and Figure 7Further examples of the hinge assembly 100 and related features are provided. In each case, the base 102 is mounted adjacent to the upper first end 178 of the first link 168, and the pivot arm 104 is connected adjacent to the proximal end 180 of the second link 170. The first link 168 extends in the direction of gravity V (i.e., vertically in a broad sense). The second link 170 is connected to the pivot arm 104 such that when the hinge assembly 100 is in the extended position, the second link 170 is parallel to the first link 128, as... Figure 6 and Figure 7 As shown.

[0083] The base 102 can be mounted to the first rod 168 using any suitable connection. In the example shown, the base 102 has one or more pre-formed fastener positions 182 that provide fixing points for connection to corresponding fastener positions 184 on the first rod 168. In this case, the base 102 has three sets of bolt holes, one set on each side of the box-section body of the base 102 except for the side facing the actuator system 116 (see also...). Figure 1 and Figure 4 The first rod 168 may also have multiple pre-formed fastener locations 184, such as bolt holes as shown. This provides the option to mount the base 102 relative to the first rod 168 in different orientations. In each orientation, the hinge assembly 100 may be oriented such that the arm pivot axis 114, the first mounting rotation axis 124, and the second mounting rotation axis 126 are perpendicular to the direction of gravity V.

[0084] Similarly, the second rod 170 can be fastened to the pivot arm 104 using any suitable connecting mechanism. In this case, the pivot arm 104 includes a hollow box section into which the proximal end of the second rod 180 is fitted and fastened by pins 186, rivets, screws, etc.

[0085] The second rod 170 extends from the proximal second rod end 180 to the distal second rod end 188 and can have any desired length, provided that it and the attached load can be properly supported by the hinge assembly 100 and the first rod 168. In some cases, the second rod 170 can hold one or more objects (such as electrical equipment 190). Such objects may include surveillance cameras, lights, or electronic beacons. In some cases, electrical equipment 190 may include wireless transmission equipment, such as repeaters, communication nodes, antennas (e.g., 5G telecommunications antennas), satellite receivers, or transceivers.

[0086] like Figure 6 and Figure 7As shown, when the hinge assembly 100 is configured for use, the drive accessory 152 is uncovered (i.e., it is exposed to external contact). This allows easy access to the drive accessory 152 in all situations and is particularly useful when the drive accessory 152 is not within reach of the operator (who is standing on the ground supporting the first column 168). Figure 6 and Figure 7 Two different alternatives for operating drive accessory 152 are shown. Figure 6 In this embodiment, the drive accessory 152 includes an eyelet operated by a drive member 192 having a hook 194 connected to the crank arm 196 via an elongated shaft 198. The drive member 192 is preferably removable from the drive accessory 152, such as by removing the hook 194 from the eyelet. This allows a service technician to operate the drive accessory 152 from a greater distance beyond his or her arm's reach and prevents access to the drive accessory 152 when it is removed. In other embodiments, the drive member 192 may be permanently fixed to the drive accessory 152 and, if unauthorized access is dangerous, secured to the lower rod 168 or another structure to prevent unauthorized interference. Similarly, Figure 7 A drive member 192 in the form of an elongated shaft 198 driven by an electric drill motor 200 is shown. Figure 7 An alternative drive accessory 152 is also shown, which is configured for a plug-in type connection as described above.

[0087] Figure 8 A complete rod assembly 202 is shown, having a first rod 168, a second rod 170, and a hinge assembly 100 (such as those described herein) connecting the first rod 168 to the second rod 170. The first rod 168 extends from a lower first rod end 204 to an upper first rod end 178 in the gravitational direction V. The lower first rod end 204 is configured to be fastened to a base surface 206 (such as the ground or building structure) via conventional attachment mechanisms (e.g., embedded concrete, break-away bolts, etc.), such that the upper first rod end 178 cantilevered over the base surface 206. When the hinge assembly 100 is in the extended position, the second rod 170 extends parallel to the first rod 168.

[0088] In normal use, the proximal second rod end 180 is located below the distal second rod end 188, and one or more parts of the device 208 (such as electrical equipment) are secured to the second rod 170 in an elevated position above the first rod 168. Figure 8 The device 208 is shown located at the distal end 188 of the second rod, but the device 208 can be positioned at any desired location along the second rod 170.

[0089] Installation and maintenance of device 208 can be performed by operating hinge assembly 100 to the retracted position (as shown by the dashed line). In this position, the second rod is oriented such that the distal second rod end 188 is below the proximal second rod end 180. Figure 8 As shown, the hinge assembly 100 can be positioned above the reach of the operator 210's arm. However, the operator 210 can operate the actuator system 116 of the hinge assembly 100 by using the drive member 192 (such as those described herein or having any other suitable configuration) to move the second lever 170 between an extended position and a retracted position.

[0090] In a preferred embodiment, when the second rod 170 is in the retracted position, the distal end 188 of the second rod is within reach of the operator 210's arm, allowing the operator 210 to perform maintenance without leaving the bottom surface 206. For this purpose, the second rod 170 can have a length equal to or even greater than the first rod 168. For example, if the hinge assembly 100 is configured to position the second rod at 180 degrees relative to the first rod 168 when the second rod 170 is in the retracted position, the second rod 170 could be as long as the first rod 168 minus approximately two meters. When the second rod 170 is fully retracted, this would place the distal end 188 approximately two meters from the bottom surface 206. Therefore, for maintenance to be performed at the height of the bottom surface 206, the first length L1 from the bottom surface 206 to the pivot arm axis 114 is no more than two meters greater than the second length from the pivot arm axis 114 to the distal end 188 or the device 208 to be maintained.

[0091] As is evident from the foregoing, this type of hinge assembly 100 mounting offers significant advantages over conventional pole-mounted systems. For example, the use of a simple and inexpensive drive component 192 allows the hinge assembly 100 to be mounted at a high position (e.g., greater than 3 meters from the base surface 206) while still remaining easily accessible for maintenance. This high position allows the hinge assembly 100 and its actuator system 116 to remain out of reach of unauthorized personnel and reduces the weight that must be borne by the hinge assembly 100 by allowing the use of a smaller second pole 170 compared to the base hinge post. This type of mounting also allows the second pole 170 to be customized to the requirements of the device. For example, if the device is lightweight (e.g., a single 5G antenna or repeater), the second pole 170 can be made of a lightweight material that allows the second pole 170 to be longer, or allows the hinge assembly 100 to be manufactured less rigidly to bear the load.

[0092] Furthermore, the hinge assembly 100 can be used to position the equipment for maintenance at or near the junction of the lower pole 168 and the bottom surface 206. This contrasts with a base-hinged post, where the upper part of the post is substantially horizontal to the ground during maintenance, requiring the operator 210 to traverse the entire length of the upper part of the post to reach the equipment at the top. Therefore, this arrangement is more convenient and also allows the pole assembly 202 to be used on small raised platforms or in areas where maintenance is unsafe or impossible (such as near a driveway or in confined spaces) adjacent to or near the ground.

[0093] With the drive member 192 removable, the upper limit of the placement of the hinge assembly 100 is limited only by the operator's ability to maneuver the drive member 192 into position. However, the drive member 192 may have multiple segments, of which only the lowest segment is removable. Thus, the operator can use the short, removable lower segment of the drive member 192 (e.g., one or two meters long) to engage the permanently fixed upper segment, which remains connected to the lower rod 168 and the first shaft end 144.

[0094] It should also be understood that the embodiments can be used to retrofit existing pole assemblies to include a second pole. For example, a controlled-motion hinge assembly 100, such as that described herein, can be attached to existing light poles, telecommunication poles, buildings, signs, water towers, etc., and equipped with a second pole 170 that extends above the existing structure when the hinge assembly 100 is moved to the extended position. Once the hinge assembly 100 and the second pole 170 are installed, an operator can lower the second pole 170 to the retracted position, install the desired equipment, and move the second pole 170 to the extended position.

[0095] It should also be noted that the base 102 and pivot arm 104 can be conveniently used to hold and / or arrange wires or cables leading to the device. For example, in embodiments where the base 102 and pivot arm 104 are formed of a hollow tube (e.g., a box-shaped cross-section), the wire can pass through the hollow tube. In other cases, wire harness connectors, etc., can be externally attached to the base 102 and pivot arm 104.

[0096] While the foregoing advantages are contemplated using one or more embodiments, the invention is not limited to providing any particular advantage or set of advantages. Furthermore, other advantages and uses are expected to become apparent through practice of the invention as provided herein.

[0097] Various embodiments of the invention have been shown and described herein, but it should be understood that these embodiments are provided by way of example only. Many variations, modifications, and substitutions will occur to those skilled in the art without departing from the spirit of the invention. For example, the components described herein can be constructed or assembled in any manner. For instance, bolted connections can be replaced by rivets, pins, adhesives (e.g., epoxy resin or bonding agents), or welded connections, and multi-part assemblies can be replaced by integral castings or machined parts. As another example, components secured with spring clips can alternatively be secured by welding, threaded nuts, or integrally formed flanges, etc. Other alternatives and variations will be apparent to those skilled in the art based on this disclosure. Therefore, the appended claims are intended to cover all such variations falling within the spirit and scope of the invention.

Claims

1. A controlled motion hinge assembly, comprising: Base; A first actuator mount is rotatably connected to the base to rotate about a rotation axis of the first mount, wherein the first actuator mount includes a threaded hole extending along a hole axis perpendicular to the rotation axis of the first mount; A pivot arm is pivotally connected to the base to pivot about an arm pivot axis, which is parallel to and spaced apart from the rotation axis of the first mounting member. A second actuator mount is rotatably connected to the pivot arm to rotate about a rotation axis of the second mount, the rotation axis of the second mount being parallel to and spaced apart from the rotation axis of the first mount and the pivot axis of the arm; A hinge pivotally connects the base to the pivot arm, such that the pivot arm is movable relative to the base about the arm's pivot axis, wherein the pivot arm is movable between an extended position and a retracted position, in the extended position being a first distance spaced apart from the second rotation axis of the mounting member, and in the retracted position being a second distance spaced apart from the second rotation axis of the mounting member, the second distance being less than the first distance; and An actuator shaft has a first shaft end, a second shaft end, and a threaded body, the threaded body extending along the actuator shaft axis between the first shaft end and the second shaft end, wherein: The first shaft end is configured to receive drive torque about the axis of the actuator shaft; The second shaft end is connected to the second actuator mounting member so as to be able to rotate about the actuator shaft axis at a fixed position along the actuator shaft axis; and The threaded body engages with the threaded hole of the first actuator mount such that the application of the drive torque causes the first actuator mount to move toward and away from the second actuator mount along the actuator shaft axis, thereby causing the pivot arm to move toward the retracted position and the extended position, respectively. The pivot arm is displaced at an angle greater than 90 degrees around the pivot axis between the extended position and the retracted position.

2. The controlled motion hinge assembly according to claim 1, wherein, The pivot arm is angularly displaced by at least 110 degrees about the pivot axis between the extended position and the retracted position.

3. The controlled motion hinge assembly according to claim 1, wherein, The pivot arm is angularly displaced by at least 135 degrees about the pivot axis between the extended position and the retracted position.

4. The controlled motion hinge assembly according to claim 1, wherein, The base and the pivot arm are configured such that when the pivot arm is in the extended position, the base and the pivot arm contact at a corresponding stop surface adjacent to the hinge, thereby preventing rotation about the arm pivot axis beyond the extended position.

5. The controlled motion hinge assembly according to claim 1, wherein, The base is configured to be fastened to an adjacent structure, wherein the pivot axis of the arm is perpendicular to the direction of gravity.

6. The controlled motion hinge assembly according to claim 5, wherein, The base is configured to be fastened to the adjacent structure in multiple different orientations, wherein the arm pivot axis is perpendicular to the direction of gravity in each of the multiple different orientations.

7. The controlled motion hinge assembly according to claim 5, wherein, The adjacent structure includes a first rod extending in the direction of gravity.

8. The controlled motion hinge assembly according to claim 7, wherein, The pivot arm is configured to be fastened to the second rod such that when the pivot arm is in the extended position, the second rod is parallel to the first rod.

9. The controlled motion hinge assembly according to claim 7, wherein, The pivot arm is configured to be fastened to a second rod, which extends from a proximal second rod end connected to the pivot arm to a distal second rod end connected to one or more objects of the electrical equipment.

10. The controlled motion hinge assembly according to claim 9, wherein, One or more components of the electrical equipment include one or more components of a wireless transmission device.

11. The controlled motion hinge assembly according to claim 1, wherein, The first shaft end includes a drive component.

12. The controlled motion hinge assembly according to claim 11, wherein, When the hinge assembly is configured for use, the drive accessory is not closed.

13. The controlled motion hinge assembly according to claim 11, wherein, The drive accessory includes an eye ring.

14. The controlled motion hinge assembly of claim 13, further comprising a drive member including a hook configured to be removably inserted into the eyelet and to apply the drive torque to the eyelet when inserted into the eyelet.

15. The controlled motion hinge assembly according to claim 14, wherein, The drive component includes an elongated shaft having the hook at one end and a crank arm at the other end.

16. The controlled motion hinge assembly according to claim 1, wherein, The second shaft end is connected to the second actuator mounting via one or more bushings or bearings.

17. The controlled motion hinge assembly according to claim 16, wherein, The second shaft end is connected to the second actuator mount via a thrust bearing assembly configured to hold the second shaft end to the second actuator mount at a fixed position relative to the actuator shaft axis.

18. A controlled motion hinge assembly, comprising: Base; A first actuator mount is rotatably connected to the base to rotate about a rotation axis of the first mount, wherein the first actuator mount includes a threaded hole extending along a hole axis perpendicular to the rotation axis of the first mount; A pivot arm is pivotally connected to the base to pivot about an arm pivot axis, which is parallel to and spaced apart from the rotation axis of the first mounting member. A second actuator mount is rotatably connected to the pivot arm to rotate about a rotation axis of the second mount, the rotation axis of the second mount being parallel to and spaced apart from the rotation axis of the first mount and the pivot axis of the arm; A hinge pivotally connects the base to the pivot arm, such that the pivot arm is movable relative to the base about the arm's pivot axis, wherein the pivot arm is movable between an extended position and a retracted position, in the extended position being a first distance spaced apart from the second rotation axis of the mounting member, and in the retracted position being a second distance spaced apart from the second rotation axis of the mounting member, the second distance being less than the first distance; and An actuator shaft has a first shaft end, a second shaft end, and a threaded body, the threaded body extending along the actuator shaft axis between the first shaft end and the second shaft end, wherein: The first shaft end is configured to receive drive torque about the axis of the actuator shaft; The second shaft end is connected to the second actuator mounting member so as to be able to rotate about the actuator shaft axis at a fixed position along the actuator shaft axis; and The threaded body engages with the threaded hole of the first actuator mount such that the application of the drive torque causes the first actuator mount to move toward and away from the second actuator mount along the actuator shaft axis, thereby causing the pivot arm to move toward the retracted position and the extended position, respectively. The hinge includes a first hinge bracket mounted to the base, a second hinge bracket mounted to the pivot arm, and a pivot pin connecting the first hinge bracket to the second hinge bracket.

19. A controlled motion hinge assembly, comprising: Base; A first actuator mount is rotatably connected to the base to rotate about a rotation axis of the first mount, wherein the first actuator mount includes a threaded hole extending along a hole axis perpendicular to the rotation axis of the first mount; A pivot arm is pivotally connected to the base to pivot about an arm pivot axis, which is parallel to and spaced apart from the rotation axis of the first mounting member. A second actuator mount is rotatably connected to the pivot arm to rotate about a rotation axis of the second mount, the rotation axis of the second mount being parallel to and spaced apart from the rotation axis of the first mount and the pivot axis of the arm; A hinge pivotally connects the base to the pivot arm, such that the pivot arm is movable relative to the base about the arm's pivot axis, wherein the pivot arm is movable between an extended position and a retracted position, in the extended position being a first distance spaced apart from the second rotation axis of the mounting member, and in the retracted position being a second distance spaced apart from the second rotation axis of the mounting member, the second distance being less than the first distance; and An actuator shaft has a first shaft end, a second shaft end, and a threaded body, the threaded body extending along the actuator shaft axis between the first shaft end and the second shaft end, wherein: The first shaft end is configured to receive drive torque about the axis of the actuator shaft; The second shaft end is connected to the second actuator mounting member so as to be able to rotate about the actuator shaft axis at a fixed position along the actuator shaft axis; and The threaded body engages with the threaded hole of the first actuator mount such that the application of the drive torque causes the first actuator mount to move toward and away from the second actuator mount along the actuator shaft axis, thereby causing the pivot arm to move toward the retracted position and the extended position, respectively. The controlled motion hinge assembly further includes a sheath surrounding the threaded body between the first actuator mount and the second actuator mount.

20. The controlled motion hinge assembly according to claim 19, wherein, The sheath is flexible between a first configuration and a second configuration. In the first configuration, when the pivot arm is in the extended position, the sheath covers the entire threaded body between the first actuator mount and the second actuator mount. In the second configuration, when the pivot arm is in the retracted position, the sheath covers the entire threaded body between the first actuator mount and the second actuator mount.

21. The controlled motion hinge assembly according to claim 20, wherein, The sheath also surrounds the second actuator mounting component.

22. A rod assembly, comprising: A first rod extends from a lower first rod end to an upper first rod end in the direction of gravity, the lower first rod end being configured to be fastened to a bottom surface, and the upper first rod end being configured to extend above the bottom surface; The second pole extends from the near end of the second pole to the far end of the second pole. as well as Controlled motion hinge assembly, including: The base is fastened adjacent to the upper first rod end. The pivot arm is fastened to the proximal second rod end. A hinge pivotally connects the base to the pivot arm, such that the pivot arm is movable relative to the base about an arm pivot axis oriented perpendicular to the direction of gravity, wherein the pivot arm is movable between an extended position and a retracted position, wherein in the extended position the second rod extends along the direction of gravity, wherein the distal end of the second rod is above the proximal end of the second rod, and in the retracted position the second rod is oriented such that the distal end of the second rod is below the proximal end of the second rod. An actuator is configured to be manually operated by an operator located on the bottom surface to selectively move the pivot arm between the extended position and the retracted position; When the pivot arm is in the retracted position, the distal second rod end is positioned for maintenance by an operator located on the bottom surface.

23. The rod assembly of claim 22, wherein, The pivot arm is displaced at an angle greater than 90 degrees around the pivot axis between the extended position and the retracted position.

24. The rod assembly of claim 22, wherein, The pivot arm is angularly displaced by at least 110 degrees about the pivot axis between the extended position and the retracted position.

25. The rod assembly according to claim 22, wherein, The pivot arm is angularly displaced by at least 135 degrees about the pivot axis between the extended position and the retracted position.

26. The rod assembly of claim 22, wherein, The controlled motion hinge assembly includes a threaded body configured to engage the base and the pivot arm to move the pivot arm between the extended position and the retracted position, and has an exposed drive fitting positioned adjacent to the base.

27. The lever assembly of claim 26, further comprising a drive member having a first end and a second end, the first end being removably connected to the drive accessory, and the second end being configured to receive a drive torque applied by an operator located on the underlying surface while the first end is connected to the drive accessory.

28. The rod assembly of claim 27, wherein, The second end of the drive member includes a crank arm.

29. The rod assembly of claim 26, wherein, The controlled motion hinge assembly also includes: A first actuator mount is pivotally connected to the base to rotate about a first mount rotation axis parallel to the pivot axis of the arm, wherein the first actuator mount includes a threaded hole extending along a hole axis perpendicular to the rotation axis of the first mount; and A second actuator mount is pivotally connected to the pivot arm to rotate about a second mount rotation axis that is parallel to and spaced apart from the pivot axis of the arm, and is parallel to the pivot axis of the arm; The threaded body is positioned on an actuator shaft, the actuator shaft having a first shaft end, a second shaft end, and the threaded body extending along the actuator shaft axis between the first shaft end and the second shaft end; and in: The first shaft end is configured to receive drive torque about the axis of the actuator shaft. The second shaft end is connected to the second actuator mounting member so that it can rotate about the actuator shaft axis at a fixed position along the actuator shaft axis, and The threaded body engages with the threaded hole of the first actuator mount such that the application of the drive torque causes the first actuator mount to move toward and away from the second actuator mount along the actuator shaft axis, thereby moving the pivot arm toward the retracted position and the extended position, respectively.

30. The rod assembly of claim 29, wherein, The second shaft end is connected to the second actuator mount via a thrust bearing assembly configured to hold the second shaft end to the second actuator mount at a fixed position relative to the actuator shaft axis.

31. The rod assembly according to claim 22, wherein, The base and the pivot arm are configured such that when the pivot arm is in the extended position, the base and the pivot arm contact at a corresponding stop surface adjacent to the hinge, thereby preventing rotation about the arm pivot axis beyond the extended position.

32. The rod assembly according to claim 22, wherein, The base is configured to be fastened to the first rod in multiple different orientations, wherein the arm pivot axis is perpendicular to the direction of gravity in each of the multiple different orientations.

33. The rod assembly according to claim 22, wherein, The distal second rod end is configured to mount one or more electronic devices, which are positioned such that they can be serviced by an operator located on the bottom surface when the pivot arm is in the retracted position.

34. The rod assembly of claim 22, wherein, The lower first pole end is at least 3 meters away from the upper first pole end.

35. The rod assembly according to claim 22, wherein, The first length from the bottom surface to the arm pivot axis is no more than two meters greater than the second length from the arm pivot axis to the distal second rod end.

36. A method for modifying a rod assembly, the rod assembly including a first rod extending in the direction of gravity from a lower first rod end fastened to a bottom surface to an upper first rod end overhanging above the bottom surface, the method comprising: A controlled motion hinge assembly is provided, the controlled motion hinge assembly comprising: base Pivoting arm with mounting structure, A hinge pivotally connects the base to the pivot arm, such that the pivot arm is movable relative to the base about an arm pivot axis oriented perpendicular to the direction of gravity, wherein the pivot arm is movable between an extended position and a retracted position, in the extended position the mounting structure is along the arm pivot axis relative to the direction of gravity, and in the retracted position the mounting structure is below the arm pivot axis relative to the direction of gravity. An actuator is configured to be manually operated by an operator located on the bottom surface to selectively move the pivot arm between the extended position and the retracted position; Secure the base to the upper first rod end; Provide a second club extending from the proximal end of the second club to the distal end of the second club; and The proximal second rod end is fastened to the pivot arm such that when the pivot arm is in the extended position, the second rod is oriented above the first rod along the direction of gravity, and when the pivot arm is in the retracted position, the distal second rod end is located below the pivot axis of the arm.

37. The method according to claim 36, wherein, When the pivot arm is in the retracted position, the distal second rod end is positioned for maintenance by an operator located on the bottom surface.

38. The method according to claim 36, wherein, The pivot arm is displaced at an angle greater than 90 degrees around the pivot axis between the extended position and the retracted position.

39. The method according to claim 36, wherein, The pivot arm is angularly displaced by at least 110 degrees about the pivot axis between the extended position and the retracted position.

40. The method of claim 36, wherein, The pivot arm is angularly displaced by at least 135 degrees about the pivot axis between the extended position and the retracted position.

41. The method according to claim 36, wherein, The controlled motion hinge assembly includes a threaded body configured to engage the base and the pivot arm to move the pivot arm between the extended position and the retracted position, and has an exposed drive fitting positioned adjacent to the base.

42. The method of claim 36, further comprising manually operating the actuator from a position on the bottom surface adjacent to the lower first rod end to move the pivot arm from the retracted position to the extended position.

43. The method of claim 42, further comprising mounting one or more parts of the electrical equipment to the distal second rod end before operating the actuator from a position adjacent to the lower first rod end on the bottom surface to move the pivot arm from the retracted position to the extended position.

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