Communications: radio wave antennas – Antennas – Balanced doublet - centerfed
Patent
1974-06-12
1976-02-03
Yusko, Donald J.
Communications: radio wave antennas
Antennas
Balanced doublet - centerfed
325119, H04B 103
Patent
active
039368335
ABSTRACT:
An assembly is provided which is particularly suited for use as a mounting means for supporting a garage door radio control transmitter within a motor vehicle. The assembly consists of the garage door radio control transmitter and a housing therefor provided in the dashboard of the vehicle. The assembly is designed to be operable to permit the transmitter to be used either when supported in the aforesaid housing or when removed therefrom. The transmitter comprises an enclosure within which suitable electrical circuitry embodying conventional construction is housed operable to produce a signal which in turn is effective to actuate control mechanism for causing a garage door to open and close. The enclosure which is substantially rectangular in configuration is provided with a pair of end walls, one of which has mounted thereon terminal means operable for connecting the transmitter in electrical circuit relation with a suitable externally located electrical power supply. The other of the pair of end walls has embodied thereon switch means operable for selectively providing the transmitter with an ON or an OFF operating state. In addition, on one of the side walls of the enclosure there is provided contact means operable for connecting the transmitter in electrical circuit relation with antenna means when the transmitter is positioned in the aforesaid housing thereby to improve the characteristics of the signal transmitted from the transmitter. A disconnect switch is also provided on one of the side walls of the enclosure operable for automatically disconnecting the internal power supply of the transmitter when the latter is inserted into the housing and thereby connected in electrical circuit relation with an external power supply. The housing formed in the dashboard of the vehicle is defined by a top and a bottom wall, a pair of suitably spaced side walls, an open end wall and a closed end wall. Terminal means are suitably mounted on the closed end wall of the housing so as to be capable of being cooperatively associated with the terminal means of the transmitter when the latter is received in the housing through the open end wall thereof. Moreover, camming means are supported on one of the side walls of the housing so as to be suitably located thereon thereby to be effective when the transmitter is being inserted into the housing to actuate the disconnect switch of the transmitter. Also, one of the side walls of the housing is provided with antenna contact means engageable with the contact means of the transmitter so as to be effective to complete an electrical circuit therethrough between an antenna with which the vehicle is provided and the signal producing electrical circuitry of the transmitter.
REFERENCES:
patent: 3090959 (1963-05-01), Marmont
patent: 3364427 (1968-01-01), Bennett
The Stanley Works
Yusko Donald J.
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