Twin screw spur gear drive
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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N/A
Issued Date -
N/A
app pub date -
Nov 20, 2001
filing date -
Mar 20, 2000
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A twin screw spur gear drive in the form of an electromotive linear drive, useful for furniture in the field of hospital and nursing care, includes a housing for attachment of a flanged tube, and a screw drive having at least two spur wheels and a screw, which is wedged onto a journal of an electric motor and engaging the spur wheels, for operating a spindle. A drive nut is placed in threaded engagement with the spindle and secured against rotation. The drive nut carries a lifting tube which is connected to a component to be operated and moves back and forth as the spindle rotates and the nut is advanced along the spindle. In order to protect the twin screw drive from ingress of contaminants such as cleaning liquid, seals are provided for sealing at least some of the abutting surfaces between the housing and adjoining components.
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