Hurdle with automatic displacement of counterweights
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United States of America Patent
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Mar 3, 2015
Grant Date -
Feb 28, 2013
app pub date -
Apr 28, 2011
filing date -
May 3, 2010
priority date (Note) -
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status (Latency Note)
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Abstract
A hurdle includes two base parts, each base part having a hollow space; a counterweight; a gear transmission arranged in each base part to displace the counterweight; tubular elements that include first second tubes displaceable telescopically relative to one another, each of the first tubes being fixed to one of the base parts; locking elements that lock the first and second tubes relative to one another; a bar connecting upper ends of the second tubes; a force-transmitting unit that extends from the hollow space in each base part and is connected to an associated second tube; and guides arranged in each base part, where the gear transmission engages both with the force-transmitting unit and with a driver for the counterweight, where the force-transmitting unit is received in the guides, and where the gear transmission is adapted to cooperate with openings provided in the force transmitting unit.
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