Implements or apparatus for applying pushing or pulling force – Device or member for contacting and guiding moving cable – Including rotatable – cable contacting – pulley wheel element
Reexamination Certificate
2006-07-11
2006-07-11
Marcelo, Emmanuel M (Department: 3654)
Implements or apparatus for applying pushing or pulling force
Device or member for contacting and guiding moving cable
Including rotatable, cable contacting, pulley wheel element
C024S1340KA, C024S1340KB
Reexamination Certificate
active
07073780
ABSTRACT:
A failsafe cleat with automatic in-line locking cam includes a frame having proximate and a remote sides on substantially opposite sides of the frame and formed with a passageway, extending between said proximate and remote sides, for receiving a line that can move along a first line releasing direction from said proximate to said remote sides and a line pulling direction from said remote to said proximate sides. A locking cam on the frame on one side of said passageway has a line engaging portion, the cam being movable between a line releasing position and a line locking position. The line engaging portion includes a first engaging portion normally spaced a distance Δ from the line to form a clearance gap in the line releasing position and a second engaging portion bridging the gap a distance equal to at least Δ for arresting the line and preventing movement of the line in the line releasing direction. A pusher on the frame on an opposite side of said passageway in relation to said cam means selectively applies a force on the line in the direction of said cam for urging the line across the clearance gap the distance Δ into contact with the first engaging portion only when tension in the line on the proximate side is less relative to the tension in the line at the remote side, continued contact between the line and the line engaging portion causing the second engaging portion of the cam to bridge the distance Δ while the cam moves from the releasing to said locking positions until a tension is applied by the user to the line on the proximate side that at least equals the tension at the remote side. The cam is biased to urge the cam to disengage from the line. The pusher is also biased to normally move the line across the gap into contact with the cam while permitting the line to return to the passageway out of contact with the cam when sufficient tension is applied by the user off the cleat center line to create a force component to offset the pushing force created by the pusher including its biasing force thereby promoting unlocking of the line and allowing the line to move in the first line releasing direction.
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