Communications: radio wave antennas – Antennas – Combined
Patent
1976-09-20
1977-09-06
Smith, Alfred E.
Communications: radio wave antennas
Antennas
Combined
174 42, 188 1B, 343DIG1, H01Q 1300
Patent
active
040471829
ABSTRACT:
This invention pertains to a new and inexpensive apparatus for inhibiting vibrations of existing or to be installed antennas such as are provided for use with VHF, UHF, FM and the like. These antennas include a longitudinal metal rail or spine from which transverse tubular elements extend. Usually these elements are pivotally held on one end of this spine. In and with a snapping action these elements are swung into extending position and are secured in detents formed in the spine. When in the desired transverse orientation the tubular elements are secured on this spine member. High winds as they pass by or buffet the mounted antenna tend to vibrate these elements. When the duration of vibration is prolonged one or more of the elements often break off. The loss of one or more elements affects the efficiency and effectiveness of this antenna. Replacement of these missing or broken elements is often difficult and expensive. The present invention provides an inexpensive device to inhibit such vibrations and includes a tubular plastic member which is secured to like oppositely disposed elements by plastic hook-like members. This plastic beam at its midlength has a threaded aperture formed to receive and retain a plastic screw which is turned to bring the extending or inner end of the screw into engagement with the longitudinal spine of the antenna. As this screw is turned, it brings the secured metal tubular elements into a tensioned condition. The element guard extends between midlength of the metal tubular elements as the screw engages the longitudinal spine of the antenna.
REFERENCES:
patent: 3188644 (1965-06-01), Sielaff
Moore David K.
Roberts Ralph R.
Smith Alfred E.
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