Communications: radio wave antennas – Antennas – With reel for antenna
Patent
1988-08-31
1990-04-17
Hille, Rolf
Communications: radio wave antennas
Antennas
With reel for antenna
343883, 343901, H01Q 112
Patent
active
049184601
ABSTRACT:
A telescopic mast is provided in kit form with stays wound on reels in a predetermined order. This order is such that when erecting the mast it is only necessary to walk between the mast and pegs fixed into the ground and not between two pegs at a distance from the mast. This minimizes the amount of walking which is necessary in erecting the mast. Clamps between sections are formed from a strap around the outer of two concentric sections. The ends of the strap are secured together and attached to a member with a pressure face. A camming device between this member and the mast which acts against the pressure face and the mast enables the strap to be tightened thus gripping the outer mast portion against the inner mast portion. The top section of a telescopic mast is less inherent rigidity than the bottom section and this it is preferable to construct it from material with a greater resistance to longitudinal bending than the lower section and to vary the resistance of the intermediate sections accordingly.
REFERENCES:
patent: 959100 (1910-05-01), Von Arco
patent: 2890902 (1959-06-01), Gindre
patent: 2983342 (1961-05-01), Howard
patent: 3189906 (1965-06-01), Kulik et al.
patent: 3380059 (1968-04-01), Pearlman
patent: 3950756 (1976-04-01), Tisler
patent: 4047821 (1977-09-01), Hoke et al.
patent: 4212015 (1980-07-01), Graf et al.
Batters Reginald F.
Brameld Mervyn
Collins Brian S.
Price Timothy
C&S Antennas Limited
Hille Rolf
Johnson Doris J.
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