US 4,085,600 AGranted

Double contact locking mechanism

OwnerAhmed El Bindariinventor

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Abstract

A double contact padlock is provided wherein the locking pin thereof replaces the cam and pins of conventional padlocks and further engages both arms of the padlock shackle to form a high strength padlock. The locking pin bridges the shackle arms and axially rotates into and out of engagement therewith. In a preferred embodiment the locking pin rotates into slots in the shackle arms to secure the shackle. The padlock of the invention can be employed to lock structures, equipment and vehicles including cycles. In another embodiment of the invention a padlock is provided wherein the upper or arch end of the shackles is of greater width and the lower portion of the shackle is narrower in width near the lock housing, to provide a protective shackle arm overhang at the locking spindle end of such lock housing. Additionally, a bracket is provided which tightens around the fixed column of, e.g. a steering wheel of a vehicle. A padlock shackle fits over a spoke of the wheel and locks to the bracket, restricting turning of the wheel and securing the vehicle or other equipment.

Claims1

Dependent claims

A padlock comprising a shackle terminating in a pair of spaced arms, said arms each having a lip thereon proximate the ends thereof, a locking pin of sufficient length, to bridge the shackle arms, said pin having at least one indented portion which rotates about the longitudinal axis of rotation of said pin, said indented portion being positioned to engage both shackle lips upon axial rotation thereof and to swing clear from said shackle arms when further rotated, lock housing means for holding said shackle lips and said indented portion in engaging proximity, means to axially rotate said locking pin into locking engagement with said shackle arms and means to further rotate said locking pin to disengage said indented portion from said shackle arms to release said shackle to permit the opening of said padlock;

one of said shackle arms extending substantially straight to the end thereof and the other of said shackle arms extending substantially parallel to the first arm part way then bending inwardly toward said first arm then bending again to substantially parallel said first arm proximate said lock housing means to provide a protective shackle arm overhang which prevents direct blows to the lock housing said overhang limited to the axial extent of said lock housing.

Dependencies are inferred from the claim text.