Abstract: A system and method of deploying a plurality of aesthetically unobtrusive radio frequency (RF) antenna systems or complying with zoning ordinances and other restrictive covenants, and for providing an array configuration which is intelligently controlled to overcome many of the limitations of conventional RF antenna systems. Antennas and communications systems components including filter-preamplifier, frequency-converter, and beam-selection/manipulation subsystems are concealed by packaging and integrating them within common pole-like objects and panel-like structures. The pole-like objects include utility poles, street lamps, flagpoles, signs, church steeples, columns, railings, and roof balconies. Panel-like structures include advertising billboards and road signs, and building panels. The concealed antennas and related components are then integrated into larger scale antenna subsystems.

Abstract: An attaching mechanism for a GPS antenna is disclosed. The attaching mechanism comprises a clip for gripping a plate-shaped member and having a shaft supporting member, a shaft in which one end thereof is supported by the shaft supporting member, and a base member fixed to the other end of the shaft and on which a GPS antenna is mounted.

Abstract: An apparatus for mounting antennas is disclosed herein. The apparatus includes an enclosure having at least three adjoining side walls defining an interior space. Each of the walls includes an exterior surface and means on the exterior surfaces for mounting a plurality of antennas to the walls. The enclosure defines at least one opening to allow access to said interior space. The antennas may thus be mounted to the enclosure to be pointed in at least three opposing directions approximately 120 degrees apart, while the interior space and exterior walls of the enclosure provides a convenient and substantially weatherproof area to store support equipment for operation of the antennas.

Abstract: The device has a transmitting and receiving device for electromagnetic radiation which is arranged in the region of a bumper and includes an RF circuit arranged on a support plate and at least two substantially planar antennas that interact with the RF circuit. The antennas are fixed on a plastic sheet. A printed circuit board has perforations for the passage of radiation from the RF circuit to the antennas. Spacers having a precise longitudinal extent are inserted into the perforations, and the plastic sheet is bonded onto the underside of the printed circuit board such that the antennas each bear on a spacer.

Abstract: A biaxially rotational structure for a planar antenna comprises a biaxial base having a vertical direction and a horizontal direction, a vertical shaft assembly disposed at the vertical direction of the biaxial base, the vertical shaft assembly has a rotation limiting member; a support frame pivotally mounted on the vertical shaft assembly, the support frame having a stopper extending downwardly in a manner that the rotation limiting member limits the stopper to rotate within one turn with respect to the vertical shaft assembly; a first resilient member disposed between the vertical shaft assembly and the support frame for exerting a pressing force on the support frame; a horizontal shaft assembly disposed at the horizontal direction; and a second resilient member disposed between the horizontal shaft assembly and the biaxial base for exerting a friction force therebetween.

Abstract: According to the present invention an antenna support structure for at least three directional antenna sub-systems provided, wherein the antenna sub-systems can be preferably planar antenna arrays. The antenna support structure (1) comprises at least four panels (3, 4) adapted to support respectively one of the antenna sub-systems (2). The panels (3, 4) include a main panel (3) and at least three secondary panels (4) respectively adjacent to the main panel (3). The secondary panels (4) can be respectively attached by hinge means (5) to the main panel (3). Therefore the secondary panels (4) can be individually adjusted in a predetermined angle to the main panel (3). The antenna support structure according to the present invention can be particularly used in combination with wide-band printed dipole antennas for micro-wave and millimeter-wave applications.

Abstract: The invention is directed to a self supporting cantilever support apparatus for mounting a satellite dish antenna to a building having a sidewall. The apparatus consists of a square, steel receiver tube having a foot plate mounted on one end and a square, steel telescope tube inserted and adjustably mounted within the receiver tube. The satellite dish is screwed onto the hour glass shaped plate affixed to the telescope tube. Slotted holes formed in the hour glass shaped plate to accommodate the many different types of satellite dishes. The co-axial cable is threaded through a hole in the telescope tube, through the two tubes and out through a hole formed in the bottom of the receiver tube.

Abstract: Extendable/stowable antenna apparatus includes a molded elongated antenna stem with fixed and free ends. The stem is molded with an outer bearing surface, anti-rotation surfaces extending between the fixed and free ends, and a detent surface including a detent stow slot and a detent extend slot. A molded antenna radome includes an elongated opening molded therein with a mating inner bearing surface and anti-rotation surfaces designed to mate with the outer bearing surface and the anti-rotation surfaces of the stem. The opening slidably engages the stem for sliding movements between a stow position and an extended position at the free end. A spring biased detent mechanism in the opening engages the detent stow slot in the stow position and the detent extend slot in the extended position.

Abstract: A retractable antenna clamp that allows for easy and quick adjustment of an antenna, especially an antenna attached to an RV, boat or camper. The retractable antenna clamp comprises a tension device which holds the antenna shaft in place within a mounting bracket that is attached to a support surface of an RV, camper, boat, or the like. Antenna adjustment is accomplished by releasing the grip of the tension device on the antenna shaft so that the antenna may be raised, lowered or rotated as needed.

Abstract: A memory device comprises a substrate, an antenna on a first surface of the substrate, a microelectronic structure coupled to the antenna, a selectively deformable intermediate layer covering the first surface, the antenna and the microelectronic structure and conforming thereto, and an adhesive layer covering the intermediate layer. The intermediate layer may be deformable for selectively positioning the antenna with respect to the adhesive, and positioning the antenna with respect to an item to which the memory device is secured. The intermediate layer may be compressed, creating a relatively low profile for printing on the memory device. The intermediate layer may be an elastomerically compressible material, such as foam, or may be a selectively pressurizable and deformable envelope.

Abstract: A mobile relay station including a mobile base having mounted thereon a mast for holding antenna, the mast being guyed over spreaders and connected to the sides of the base without permanent connection to the ground.

Abstract: A device (10) for mounting a radar antenna to a support structure such as a mast (M) includes a generally U-shaped frame (12). A proximal end (14) of the frame is adapted for securement to the support structure while the frame extends generally horizontally outward from the support structure and terminates at a closed distal end (16). A radar antenna mounting platform assembly (20) has a longitudinal axis (L) and is pivotally connected between the support structure and the distal end of the frame at a position within the U-shaped frame. The device includes means (60) for selectively pivoting the radar platform bi-directionally about its longitudinal axis. The platform is preferably pivotable at least 20.degree. in either direction from horizontal to define an overall arc of at least 40.degree.. The pivoting means is remotely operable, e.g.

Abstract: An antenna system including a support structure and an antenna assembly having an open grid reflector structure in a closed ring and dipole elements. The antenna assembly includes a number of antenna panels, each including a number of the dipole elements, the closed ring is self-supporting and connected to the support structure by radial beams and struts, and the antenna panels are interconnected by a variable angle connection.

Abstract: This invention relates to radio communication systems and in particular relates to a method of installation for a fixed wireless access subscriber antenna. According to one aspect of the present invention there is provided a method of installing a fixed wireless access arrangement comprising one or more directive antennas operable to be directed at a base station; the method steps comprising: determining the absolute position of the location of the subscribers premises employing a radio position determining receiver; referencing data relating to the absolute position of the location of a fixed wireless access base station; positioning an antenna relative to the base station given the absolute position of the whereby initial set-up of the antenna is sufficiently accurate whereby fine tuning of the antenna is possible. By configuring the antenna mount prior to attachment on the structure, then the time required to deploy fixed wireless access subscriber equipment is much reduced.

Abstract: An attaching mechanism for a GPS antenna is disclosed. The attaching mechanism comprises a clip for gripping a plate-shaped member and having a shaft supporting member, a shaft in which one end thereof is supported by the shaft supporting member, and a base member fixed to the other end of the shaft and on which a GPS antenna is mounted.

Abstract: A Radio Frequency Identification (RFID) security tag for attachment to a small article of merchandise to monitor the tagged item. The security tag uses a thin flexible strip. An RFID tag device is coupled to the thin flexible strip and is used for storing data related to the small article of merchandise to be monitored. A plurality of conductors are laid on the thin flexible strip. The plurality of conductors are coupled together to form a multiple turn coil for providing energy to the RFID tag device when a first end of the thin flexible strip is coupled to a second end of the thin flexible strip to form a loop.

Abstract: An antenna adjuster includes a clamp unit 10 including an upper and a lower clamp disposed one above another in the height direction of a pole 2, the upper and lower clamps including paired clamp members 11 and 14, and 12 and 13, respectively. The paired clamp members face each other via the pole and are secured to the pole so as to be capable of position adjustment in the height and peripheral directions of the pole 2. An antenna mounting member 20 is mounted on the upper clamp member 11 for rotation about an elevation angle rotation axis member 23 and secured to the antenna 1. An azimuth angle adjusting member 30 is capable of being displaced through an elongate hole 32 formed in the upper clamp member 11 and a threaded hole 33 formed in the lower clamp member 13. An elevation angle adjusting member 40 is capable of being screwed through an engagement hole 42 formed in the antenna mounting member 20 and a nut portion 43 of the upper clamp 11 to push and pull the antenna mounting member 20.

Abstract: A personnel platform assembly and antenna support assembly for wireless communication transmitting and receiving devices such as antennas used in at least cellular telephone networks. The support assembly includes a support frame connectable upon an aerial tower which is adapted for supporting wireless communication transmitting and receiving devices thereupon. A connecting assembly is provided for fixing the support assembly at an above-ground elevation upon the aerial tower and a guide rail is suspended at a distance about the connecting assembly or central column of the tower. The guide rail is adapted for accepting a coupling to the wireless communication transmitting or receiving device and the coupling is continuously positionable along a length of the guide rail for accommodating variable positioning of the wireless communication transmitting or receiving device about the aerial tower.

Abstract: A drive unit for adjusting satellite components requiring orientation such as thrusts includes two linear drives on which steering rods are articulated via gimbals. The rods, like the additional bracing struts, are connected via globe joints to the components requiring orientation such as the platform of the thrusters. An alternative or additional articulation is provided via a globe joint on the main satellite body.

Abstract: An antenna unit for measuring the velocity of a flowing material by the Doppler effect is particularly suited for use where only a limited space is available. The antenna unit comprises a support block having first and second surfaces disposed at an acute angle (optimally 45.degree.) relative to each other. A printed circuit antenna card having thereon a high gain antenna comprising a phased array of antenna elements is mounted to the second surface and radiates microwave energy toward the first surface. A plate having an opening therein is disposed adjacent the first surface, the plate being made of a material which absorbs radiated energy incident thereon. The support block is provided with a recess for receiving an absorber wedge which absorbs the energy radiated in near side lobes. The absorber wedge and plate shape the radiation pattern so that energy radiated by the antenna intercepts the material at an angle of 45.degree..+-.15.degree. when the first surface is disposed parallel to the axis of flow.

Abstract: A wireless LAN system is configured using a communication apparatus for a wireless LAN including an antenna unit comprising an antenna, or an antenna and at least a part of a circuit of the system provided as one body, and a support for supporting the antenna unit. In addition, a pedestal for the support configured so that a terminal device for transmission or reception can be disposed thereon.

Abstract: An antenna mounting system has a pole secured at a first end to a base. A platform is connected to the pole via a tiltable joint which is rotationally fixed with respect to the pole. An antenna is secured to the platform, having a beam which is aligned to a desired elevation and azimuth orientation. Three flexible cables are connected at their first ends to the platform and at their second ends to a fixed reference plane mounting member which is rotationally fixed to the pole nearer its first end. The force of high winds will cause the pole to bend and, if unaccounted for, change the planar orientation of the platform and mispoint the beam. The platform, mounting member, and cables form a system of parallelograms whose sides remain parallel when the pole is deflected. Thus, the platform maintains its original angular orientation as the pole bends, preserving the desired orientation of the beam.

Abstract: A radio frequency (RF) antenna supporting and holding device. The antenna supporting and holding device is a molded dielectric substrate which may be used to hold, support, and position upper and lower RF antennas prior to attachment of the upper and lower RF antennas to underlying circuitry, such as a printed circuit board (PCB). The antenna supporting and holding device includes molded features for attachment to the PCB. After attachment of the upper and lower RF antennas to the antenna supporting and holding device, the device may be connected to the PCB independent of the attachment of the leads of the upper and lower RF antennas to the PCB. Thus, the antenna supporting and holding device allows the upper and lower RF antennas to be accurately positioned on the PCB prior to soldering the leads of the RF antennas to corresponding connection points on the PCB.

Abstract: An antenna driving apparatus includes an antenna driving gear (3) which has a tooth portion (3a) on part of its periphery and is rotated by rotation of a driving force transmitting gear (2) which is engaged with the tooth portion (3a) of the antenna driving gear (3). A gear cover (12) which has a plurality of cover elements (12a) and is pivotally supported on the tooth portion (3a) of the antenna driving gear (3) at each of both ends tracks around an opposite side of the driving force transmitting gear (2) and back to the antenna driving gear to cover the tooth portion (3a) and the driving force transmitting gear (2). Each of the cover element (12a) is designed to have a substantially U-shaped cross-section to form a space to which the tooth portion (3a) faces. Adjacent ones of the cover elements are swingably linked to each other.

Abstract: A support assembly for supporting a plurality of inclined plates (22) arranged in an array around a central axis includes a top support bracket (25) for supporting the upper edges (40) of the plates (22) and a plurality of base brackets (26) for supporting the lower edges (62) of the respective plates (22). The top support bracket (25) has a central axis aligned with the central axis of the array, and a plurality of side edges (28). Each side edge (28) has a downwardly inclined rim (32) at a predetermined angle corresponding to the desired plate orientation and a downwardly facing groove (42) for receiving the upper edge (40) of the respective plate (22).

Abstract: An antenna support fabric including an arm (10), a support table (20), a fixing plate (60) which is rotatably secured to the support table (20), a reflection mirror (50) which is detachably fixed to one surface of the fixing plate (60), a primary radiator (40) which is detachably fixed to one surface of the fixing plate (60) through a through hole (51) provided to the reflection mirror (50), and a transceiver (30) which is detachably fixed to the other surface of the fixing plate (60), and engaged with and connected to a projecting portion (41) of the primary radiator (40) through a through hole (62) of the fixing plate (60).

Abstract: In accordance with the present invention, a radio communications system is disclosed that can operate in one of several Modes which integrate in-building security, location determination, messaging, and data communications capabilities. The radio communication system includes at least one Interrogator for generating and transmitting a radio signal. One or more Tags of the system receive the radio signal. A Backscatter Modulator modulates the reflection of the radio signal using a subcarrier signal, thereby forming a reflected modulated signal. The Interrogator receives and demodulates the reflected modulated signal. The Interrogator can also transmit a first information signal to one or more tags, specifying which tags should respond using the Backscatter Modulator. In the Interrogation Mode, the Interrogator can determine the identity of the Tags in the reading field, and can exchange data with those Tags that have been identified.

Abstract: The antenna mount is for use in mounting a GPS antenna and a differential antenna on an aircraft. The antenna mount is fixed externally of the aircraft on an outer surface of a curved rear wall of the cockpit canopy. The antenna mount comprises a shell having a top wall for mounting at least one antenna, a front wall, side walls of substantially equal length, and a rear wall. The antenna mount is sized such that electronics required by the antenna may be placed such that they are enclosed therein. The mounting bolts are provided for fixing the antenna mount to the outer surface of the rear wall of the cockpit canopy.

Abstract: A compact patch antenna having a housing (110) for holding a patch antenna hinged by hinge (130) to a planar member (120) by a clip (140). The planar member (120) is capable of hinging to an open position for use and to a closed position for storage. The clip (140) is adaptable for connection to the edge of the glass of a window of an automobile or the like.

Abstract: An indoor/outdoor antenna mounting enclosure that may be mounted either vertically or horizontally comprises a front shell and a rear shell fastened together to enclose an interior space for a printed circuit board, the shells each have a plurality of cooling fins oriented obliquely to a longitudinal axis of the enclosure. Each of the front and rear shells includes mounting bosses for two receive antennas and a transmit antenna, the transmit antenna mounting location separated by a predetermined longitudinal distance from the first and second receive antenna mounting locations. The mounting bosses allow the antennas to be oriented either with the longitudinal or transverse axis of the enclosure. Keying holes in the shells ensure that the receive and transmit antennas are mountable only in the designated mounting location in the correct orientation.

Abstract: An adapter for facilitating the portability of satellite antennas includes a first side adapted for attachment to a satellite base and a second side adapted to releasably engaging a base unit. A plurality of base units are typically attached to desired locations for the satellite antenna, such as a home, recreational vehicle, cabin or boat. By simply releasing the adapter from the base unit, the satellite antenna may be conveniently moved to another desired location. To further facilitate transport, the receiver arm of the satellite antenna can be modified to readily fold inwardly with the release of a pin.

Abstract: An antenna mount is comprised of a base plate, an antenna mounting base to be mounted on the base surface of an antenna, and guide pins having a frange which are secured to the base plate. The antenna mounting base have insertion portions and retaining portions. The flanges of the guide pins are retained by the retaining portion, by inserting the guide pins into the insertion portion and rotaing the base plate and the antenna mounting base relative to one another. Accordingly, an antenna is obtained whereby mounting and removing of the antenna can be easily performed.

Abstract: An antenna base has a holding structure for installing an antenna directly thereon. The base also has a base plate with an axis perpendicular to the axis of an installed antenna. An antenna mounting plate is suitable for having the base plate affixed to it. The antenna mounting plate is supported relative to a pole clamp by a spherical shell. The mounting plate, exposed through an opening in the shell, is supported for rotating about a horizontal axis passing through the plate to provide for elevation angle adjustment. Locking screws are used to secure the adjusted elevation angle. The pole clamp has a pair of axially spaced tracks that define an arcuate path that extends circumferentially around at least a portion of the clamp. The shell is held in position adjacent to the clamp by two pairs of guide elements in a way that allows the shell to move along the arcuate path.

Abstract: The radio frequency unit of a millimeter wave terrestrial radio includes a housing with a front face and a back face, a microwave radio frequency transceiver electronics package within the housing, an antenna affixed to the front face of the housing, and appropriate signal connections and feeds. One portion of a dovetail support structure, preferably the male dovetail fitting, is affixed to the back face of the housing. The other portion of the dovetail support structure, preferably the female dovetail fitting, is mounted to a mounting structure. The dovetail support structure allows the radio frequency unit to be readily mounted to and demounted from the mounting structure. A reference plane defined between the radio frequency unit and the mounting structure allows the radio frequency unit to be precisely oriented relative to the mounting structure.

Abstract: An antenna for broadcasting omnidirectionally is disclosed. The antenna includes a cylindrical housing which has a lip which includes slots adapted to receive a patch antenna strip and a conductive ring. A GPS receiver and electronics package may be placed in the center of the housing. The patch antenna strip which includes a number of patch antennas broadcasts and receives radio signals. The conductive ring absorbs energy broadcast from the patch antennas and rebroadcasts the signal omnidirectionally. The resulting signal has a high gain and a wide bandwidth. A third embodiment in which the conductive ring is incorporated into a housing cover is also disclosed. The antenna is easily and inexpensively assembled and is more durable and reliable than prior art antennas.

Abstract: An external rear view mirror for motor vehicles, particularly commercial trucks, includes a support arm and mounting devices for mounting the support arm to the motor vehicle. A housing defining an interior volume is provided with the support arm having a vertical portion extending completely through the housing interior volume. At least one support plate is removably attached directly to the support arm vertical portion. An adjustable mirror assembly is mounted to the support plate front side so as to be variably positionable relative thereto. An antenna mounting bracket is formed integral with and extends from the support plate back side into the housing interior volume. The antenna mounting bracket is configured for receipt of an antenna which extends out of the housing. The entire weight of the antenna and the antenna mounting bracket is supported by the support plate which is in turn attached directly to the support arm.

Abstract: A thin antenna 20 having a satisfactory length, its making method, and an electronic device such as a wristwatch having such antenna. The antenna 20 is formed on a lower surface of a transparent plate 5 by printing an ornamental layer 22 on a lower surface of the transparent plate 5, forming a conductive ink layer 23 on the ornamental layer 22, and further forming plated metal layers 24, 25 on the conductive ink layer 23. Since the antenna 20 is thin as a whole, it may be provided within a small electronic device such as a wristwatch.

Abstract: A portable mount for a satellite dish antenna. The mount is comprised of a hollow base designed be to filled with liquid ballast. The top surface of the base contains an indentation for receiving an antenna support mounting bracket and a second, connected indentation for receiving an antenna support when not in use. When in use the base is filled with ballast material, the antenna support is rotated to a generally vertical position, and a satellite dish is attached. When in transport, the ballast is emptied, the satellite dish is removed, and the support is rotated into its indentation in the base. The base is generally rectangular, with a handle formed therein.

Abstract: An array antenna especially adapted for spacecraft use includes a support frame made up of intersecting beams which form an "eggcrate" of square openings. A plurality of subarrays or radiating tiles are dimensioned to fit within the openings. Distortion of the support frame due to external forces, or due to expansion and contraction of the radiating tiles, is accommodated andor resisted by a four-point mounting arrangement for each tile. Each mounting is located on the center of the sides of the radiating tile, and the corresponding center of the side of the opening in which it fits. Each mounting consists of a thin, flexible mounting beam, extending parallel to the associated support beam, and fastened to the support beam at the ends of the mounting beam. The center of the side of the tile is fastened to the center of the flexible support beam, so expansion and contraction of the tile are compensated by bending of the flexible beam.

Abstract: A light-weight, collapsible, single or multi element rhombic antenna is disclosed having at least two wire antenna elements for receiving and transmitting electromagnetic waves. The antenna elements are supported in a rhombic shape by an antenna frame. The frame includes four nonconductive legs extending radially outwardly from a center support. At least one of the legs is detachably engaged to the center support. Each leg has a nonconductive cross arm support orthogonally mounted to its outwardly extending end for supporting the antenna wire elements in parallel rhombic formations. An integrated feed network combines the electromagnetic waves. A translation device is coupled to the integrated feed network to convert the electromagnetic waves into a desired output signal. The antenna can be mounted on a mast for either horizontally or vertically polarized operation.

Abstract: A variable capacitance antenna allows individual adjustment of linear resonators on a beam antenna. A linear resonator is associated with each dipole element on a common support boom. A variable capacitance is positioned inside the boom and created using an arrangement of two coaxial conductive tubes as capacitive plates. One of the conductive tubes may be axially moved by a motor using a remote drive control. The movement of one conductive tube relative to the other can vary the capacitance from 0 to 100 picofarads, for example. The variable capacitance antenna can be used for both horizontal and vertical signal polarization applications. Such a variable capacitance antenna can receive and transmit electromagnetic signals on multiple frequency bands and in between frequency bands with high gain, high directivity, high efficiency, and low wind loading.

Abstract: A satellite dish is mounted on a bracket which in turn is mounted over an uneven surface of a roof or a wall of a house. The bracket has an elevated bridge portion for supporting a mounting foot of the satellite dish. The bridge portion is integrally connected to and supported by two narrow leg portions which in turn are integrally connected to and supported by two narrow foot portions. The bridge portion is elevated from two foot portions by the leg portions in order to clear the uneven surface of the roof or wall of the house.

Abstract: An antenna assembly for cellular and PCS systems for mounting on a ceiling or wall surface of a building. The assembly includes a radome covering the antenna and a base, and a concealed mounting assembly including pins having snap retainers secured to the base and snap retainers secured to a bracket fixed to the wall or ceiling.

Abstract: An antenna unit for a car navigation device includes a unit casing accommodating a circuit board and an antenna body and having a bottom cover in which a bottom recess is formed. A permanent magnet ring magnetically held on a back yoke is fixedly set in the bottom recess, the permanent magnet ring being used to magnetically hold the bottom cover on the surface of an object so that the antenna unit is detachably mounted on the object. In the antenna unit, an adhesive seal is bonded to the of the permanent magnet ring which surface confronts the surface of the object.

Abstract: A positioning device orients an antenna element, or an entire antenna of multiple elements, or other payload requiring positioning relative to a supporting base. The antenna element is pivotally mounted upon the base, and a strut extends from the antenna element to an actuator assembly which moves the strut to adjust the orientation of the antenna element. The actuator assembly has two linear actuators which extend from the base, respectively, to opposite ends of a lever which, in turn, connects via a pivot to an end of the strut distant from the antenna element. The lever pivot is located between the ends of the lever at a location closer to one of the ends than to the other of the ends of the lever, such as a two-to-one ratio of lever arm lengths. Use of a first of the actuators by itself serves for the primary source of adjustment of the position of the antenna element.

Abstract: A structure comprises a first component subject to loading and connected to a second component via a load transmitting member so that the loading exerted by the first component is imposed on the second component. The first component includes a surface secured to a complementary first surface of said load transmitting member and the second component includes a surface secured to a complementary second surface of said load transmitting member. The load transmitting member and the second component are formed of materials having relatively superior and inferior mechanical properties, respectively and the area of said surface of the second component is greater than the area of said surface of the first component. The first component may be an antenna and the second component a radome for a submarine formed of, for example, syntactic foam. The load transmitting member may be formed from fibre-reinforced plastics material.

Abstract: A transportable broadcast antenna supported on a moveable carriage comprising a telescoping tower having plurality of nesting sections, including an outer section, and intermediate and inner sections, each section slidable relative to the adjacent exterior tower section between retracted, deployed and release positions, and latches to hold the section in the deployed position. The latches disengage when the section is further extended to the release position, and is prevented from locking when the tower is retracted. Radials join the tower and extending outwardly therefrom.

Abstract: The invention is a two-ended fastener having one end suitable for attaching the fastener to a base with a second end having a special thread that is substantially cylindrical at its root and sharp at its crown. This thread is designed to mate with the radially inward surfaces of a round wire helical spring so that the helical spring may simply be threaded to the fastener. By utilizing the special thread described, a high degree of surface contact between the fastener and the spring is made possible, increasing spring retention. The special thread inner diameter may be made slightly larger than the interior diameter of the spring so that the helical spring will be slightly expanded when threaded to the fastener. An elastic force between the threaded portion of the spring and the fastener further helps retain the spring to the fastener. This elastic force increases as an attempt is made to unthread the spring from the fastener.