Spring Protection Device And Spring Drive Unit Including Spring Protection Device
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United States of America Patent
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N/A
Issued Date -
Jul 2, 2009
app pub date -
Dec 15, 2008
filing date -
Dec 28, 2007
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
The invention relates to spring protection device for a spring drive unit and adapted to surround a spring of the spring drive unit, the protection device comprising a frame plate, against which a first end of the spring rests, and the frame plate being provided with an opening passage for a pullrod connected to the spring. The spring protection device comprises bars with first end parts that are connected to the frame plate, externally of the first end of the spring, and which bars are arranged to extend externally of and along the sides of the spring and externally of a second end of the spring, thereby forming an open cage surrounding the spring. The invention also relates to a spring drive unit comprising a spring protection device.
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