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US 12,281,681 B2Granted
Latch activation between members
AssigneeSureWerx USA, Inc.
InventorsChristopher James Allington, Andrew Karl Diehl, Kevin A. Wright, Weston Hill, Dave Walters
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Abstract
Described herein is a system, method of use and Self Retracting Lifeline (SRL) apparatus using a system that governs a dynamic response between members causing a halt in relative motion between the members. Magnetic interactions, eddy current drag forces and centrifugal and/or inertial forces may provide various mechanisms of governing movement.
Claims9
An eddy current brake configuration comprising:
- a cylinder;
- and
- a tube, the tube configured to move rotationally relative to the cylinder and axially as a stroke into the cylinder, the tube and cylinder comprising at least one magnet and at least one conductor that interact when the tube enters the cylinder at different rates of relative rotational movement to impose an eddy current braking force against relative movement between the tube and cylinder;
- wherein the eddy current brake configuration is further configured to have a bi-stable attractive force arrangement wherein tube stroke movement comprises:
- a first magnetic attraction force between the tube and an external element acts to delay relative motion of the tube relative to the cylinder;
- and
- when the first magnetic attraction force is overcome, the tube is free to travel axially into the cylinder;
- and
- a second magnetic attraction force between the tube and a cylinder end acts to latch the tube in the cylinder.
6 more elements
Dependencies are inferred from the claim text.