Patent ID: 7225649

Claim:
A locking device, comprising: (A) a shackle member including (1) an elongated shank portion having a longitudinally extending axis, (2) a stop portion at a first end of said shank portion, and (3) a latch portion at a second end of said shank portion, said shank portion having an outer surface margin adjacent to said latch portion; (B) a locking head including a casing having a surrounding sidewall surface and a generally flat transverse inner head face with an entryway sized and adapted to mate with said latch portion in a longitudinal axial direction and a locking mechanism disposed in said casing, said locking mechanism being movable between (1) a locked state to lockably retain said latch portion in said locking head when said latch portion is in an engaged state and (2) an unlocked state to release said latch portion therefrom; and (C) a head cover including (1) a cover portion operative to engage the sidewall surface of said casing in surrounding relation thereto and extending therealong in the longitudinal axial direction so as to be secured thereto, and (2) a flexible, resilient flange portion extending inwardly from said cover portion to define an opening having a surrounding flange edge that defines a seal structure, the opening being sized such that said latch portion may be inserted into and removed from said locking head through the opening with said seal structure operative when said latch portion is in the engaged state to sealably engage the outer surface margin of said shank portion.