Abstract A limb attaching lock formed in a manner of a hoop comprising two semicircular segments pivotally attached at one end thereof to a floating center bracket. The semicircular hoop segments are furthermore pivotally supported on a corresponding set of pivotal standoffs attached to a mounting fixture which also connects to two biasing springs for maintaining the hoop segments open. The mounting fixture, in turn, is secured to an attachment brace adapted to engage the end of the ladder. To allow for selective alignment of the limb attaching lock relative the brace and, therefore, accommodate various angles of the limb, the attachment fixture includes a rotatable mount which can furthermore be secured at any desired angle of orientation. A cord connected at one end to the floating bracket extends through openings in the fixture end brace for securing the hoop lock in a closed position.
A locking device for use in securing the upper end of a ladder to an object comprising: a mounting structure adapted for selective engagement to said ladder; a support fixture secured for rotation to said structure, including means for selective angular attachment thereof relative said structure; a first and second pivotal mount respectively attached to the ends of said fixture; a first and second arcuate element respectively secured for substantially coplanar pivotal motion to said first and second pivotal mounts; a joining bracket pivotally secured at the ends thereof to the proximate ends of said first and second elements; securing means connected to said bracket for engagement thereof in a predetermined alignment relative said fixture; an arcuate support pad connected to said bracket and disposed to extend on the interior of said elements in overlapping arrangement relative the proximate ends thereof; said bracket comprises a substantially triangular segment pivotally joined at two corners thereof to said proximate ends of said first and second elements; and said securing means comprises a flexible cord secured at one end to the third corner of said segment and disposed to selectively secure said segment relative said fixture.
Claim 2
Dependent Claim
193 words
A locking device for use in securing the upper end of a ladder to an object comprising: a mounting structure adapted for selective engagement to said ladder; a support fixture secured for rotation to said structure, including means for selective angular attachment thereof relative said structure; a first and second pivotal mount respectively attached to the ends of said fixture; a first and second arcuate element respectively secured for substantially coplanar pivotal motion to said first and second pivotal mounts; a joining bracket pivotally secured at the ends thereof to the proximate ends of said first and second elements; securing means connected to said bracket for engagement thereof in a predetermined alignment relative said fixture; an arcuate support pad connected to said bracket and disposed to extend on the interior of said elements in overlapping arrangement relative the proximate ends thereof; said bracket comprises a substantially triangular segment pivotally joined at two corners thereof to said proximate ends of said first and second elements; and said securing means comprises a flexible cord secured at one end to the third corner of said segment and disposed to selectively secure said segment relative said fixture.