Communications: radio wave antennas – Antennas – With radio cabinet
Patent
1992-11-13
1993-09-07
Wimer, Michael C.
Communications: radio wave antennas
Antennas
With radio cabinet
343895, H01Q 124, H01Q 136
Patent
active
052433552
ABSTRACT:
An antenna apparatus for a radiotelephone (100) comprises a shroud (207), an antenna (209) and releasable latch means (231, 219, 223, 229). The shroud (207) is movable between a first and a second position. The antenna is an extendable helical coil (209) having a shortened axial length when the shroud is moved to the first position and a lengthened axial length when the shroud is moved to the second position. The extendable helical coil (209) exerts biasing forces on the shroud (207) when the shroud is moved to the second position to urge the shroud (207) towards the first position. The releasable latch means, including a platform (205) having a flexible end portion (231) adapted for cooperative engagement with the shroud (207), latches the shroud (207) at the second position when the shroud (207) is moved to the second position and releases the shroud (207) from the second position, responsive to flexing the flexible end portion (231), permitting the biasing forces to return the shroud (207 ) to the first position.
REFERENCES:
patent: 2491629 (1949-12-01), Vernier et al.
patent: 3154785 (1964-10-01), Taylor
patent: 4121218 (1978-10-01), Irwin et al.
patent: 4725845 (1988-02-01), Phillips
Carlson Kenneth W.
Emmert Steven C.
Mischenko Nicholas
Kaschke Kevin D.
Le Hoang-anh
Motorola Inc.
Wimer Michael C.
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