Speed Responsive Engagement Device
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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Issued Date -
Feb 9, 2012
app pub date -
Oct 7, 2009
filing date -
Oct 7, 2008
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A speed responsive engagement device for use in a fall arrest system has a ratchet wheel having outwardly projecting spaced apart teeth and a pawl arranged for pivotal movement to engage the ratchet wheel teeth. The pawl and the ratchet wheel are rotatable relative to one another such that when relative rotation occurs between the ratchet wheel and the pawl in a first direction the pawl contacts the ratchet wheel, generating an oscillating movement of the pawl with an amplitude dependent on the speed of the rotation, and when the speed of rotation reaches a predetermined value the increased oscillating movement causes the pawl to move into the engaged orientation brakingly engaging with the ratchet wheel teeth preventing further relative rotation between the ratchet wheel and the pawl in the first direction. A biasing arrangement arranged to bias the pawl towards the disengaged orientation. A capture arrangement arranged to capture the pawl in the engaged orientation when the pawl is brakingly engaged with the ratchet wheel.
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