Locks – Portable – Padlocks
Patent
1979-09-10
1981-07-14
Wolfe, Robert L.
Locks
Portable
Padlocks
70230, E05B 6738
Patent
active
042779618
ABSTRACT:
A security lock nut assembly for padlocks is provided which effectively prevents prying off or cutting of the padlock during use thereof. The assembly preferably includes a T-shaped padlock-engaging keeper nut having a bored main shaft, and a complemental screw secured to and extending from a support surface adjacent the padlock. In use, the keeper is positioned for engagement with a closed padlock, with the keeper shaft extending throuh the region defined by the padlock shackle and base and connected to the bolt. In this manner the padlock is held in place adjacent the support surface to restrict access to the padlock and thus prevent prying or cutting thereof. The transverse, padlock-engaging section of the keeper is sized to pass between the shackle and base only when the padlock is opened, and the keeper shaft is configured relative to the shackle to preclude rotation of the keeper when the padlock is locked in place. Simultaneous rotation of the padlock and keeper is prevented by means of projection structure located adjacent the padlock. The keeper can thus be unscrewed only when the padlock is opened and removed from the keeper.
REFERENCES:
patent: 2825218 (1958-03-01), O'Brien
patent: 2955453 (1960-10-01), Mitchell
patent: 3561236 (1971-02-01), Loughlin
patent: 3834195 (1974-09-01), Winkhaus
patent: 4003228 (1977-01-01), Lievens
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