Electricity: motive power systems – Automatic and/or with time-delay means – Movement – position – or limit-of-travel
Patent
1977-09-06
1978-11-21
Hohauser, Herman
Electricity: motive power systems
Automatic and/or with time-delay means
Movement, position, or limit-of-travel
H02H 708
Patent
active
041268202
ABSTRACT:
An antenna adapted to be extended and retracted for car radio receivers, which is actuated by means of an on-off switch of the radio receiver and is driven by an electric motor reversible in its direction of rotation; the control circuit for the electric motor includes two limit switch contacts adapted to be opened by switching cams on a disk that moves proportional to the movement of the antenna, and a further switching contact which is adapted to be actuated by a further switching cam of the disk; the further switching contact is thereby opened at and above a predetermined extended length of the antenna while a manual switch with push-button function and possibly with detent function is provided for the further selective extension or retraction of the antenna.
REFERENCES:
patent: 2650302 (1953-08-01), Geyer
patent: 2949608 (1960-08-01), Fischer
Frey Egon
Hormann Bernt O.
Daimler-Benz Aktiengesellschaft
Hohauser Herman
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