Abstract: A padlock protector for use with swing-out type closures. The protector includes a block pivotably connected to one of the lock arm catch and closure member. The block includes peripheral flanges and a recessed body to partially surround the shackle and housing of the padlock and prevents opening thereof by cutting or prying the shackle and separating it from the housing.

Abstract: A security device for padlocks used in conjunction with a locking mechanism for a roll-up type truck door. The security device includes a block which has upstanding projecting walls to shield the shackle and housing of the padlock and prevent tampering or unauthorized opening.

Abstract: A protective device for padlocks applied to interlock relatively shiftable members to which cooperating releasably interfitting retainer parts are anchored, which retainer parts are respectively shaped when interfitting to define a recess to receive the shackle of a padlock which engages and interlocks said interfitting retainer parts and is protected by said parts from unauthorized release by cutting of said shackle.

Abstract: This security device is designed for padlocks, so as to prevent their shackle members from being cut by a bolt cutter or a hacksaw. Primarily, it consists of a main body, which nestles the padlock, and which leaves no room for the operation of a bolt cutter or hacksaw to remove it from the assembly. The assembly further includes a strap for engaging with whatever is to be locked, and it includes a clevis pin for retaining the assembly together, in combination with the lock.