Traversing hoists – With motor control – Remote control or at dual control positions
Reexamination Certificate
2011-07-19
2011-07-19
Brahan, Thomas J. (Department: 3654)
Traversing hoists
With motor control
Remote control or at dual control positions
C340S870030, C341S176000
Reexamination Certificate
active
07980402
ABSTRACT:
The invention relates to a radio remote control unit for an operating device, comprising a radio transmitter for transmitting control command signals for the operating device and a radio reception unit assigned to the operating device for receiving control command signals of the radio transmitter and for converting the control command signals into control signals for controlling the operating functions of the operating device, characterized in that the radio transmitter has a sensor unit for detecting at least one irregular force induction state and/or an irregular movement state and/or at least one irregular positional state of the radio transmitter and is equipped to change its radio transmission performance in a specific manner on detection of the irregular state, and the radio reception unit is equipped to trigger an emergency control signal on detecting the specific change in the radio transmission performance of the radio transmitter to influence the operating functions of the operating device in a predetermined manner.
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patent: 5030955 (1991-07-01), Durst et al.
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patent: 6545607 (2003-04-01), Bredow et al.
patent: 6634514 (2003-10-01), Ducrot
patent: 32 34 395 (1984-03-01), None
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patent: 08 169685 (1996-07-01), None
Brahan Thomas J.
Huber und Brendel Inhaber: Wolfgang Brendel
Rothwell Figg Ernst & Manbeck P.C.
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