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A portable door lock is provided for a door having a latch engageable in an aperture in a latch plate secured to a door frame, the latch plate having a tongue extending into the aperture from a front edge of the latch plate, and the tongue being spaced from the top and bottom of the aperture. The do

A portable door lock is provided for a door having a latch engageable in an aperture in a latch plate secured to a door frame, the latch plate having a tongue extending into the aperture from a front edge of the latch plate, and the tongue being spaced from the top and bottom of the aperture. The door lock includes a retainer positionable against the latch plate to permit closing of the door and having a pair of vertically spaced fingers insertable into the latch plate aperture to engage the front edge thereof above and below the latch plate tongue. A retainer shaft extends forwardly from the retainer and has a screw-thread portion, and a holding bracket has a medial portion slidably mounted on the shaft and rearwardly projecting holding arms at opposite ends. A holding nut threadingly engages the screw-threaded portion of the retainer shaft to hold the bracket arms against the door frame and the door respectively, when the door is closed and the retainer is engaged with the latch plate, to prevent the door from being opened.

대표청구항 ▼

A locked door assembly comprising a door frame, a latch plate secured to the door frame, said latch frame having an aperture and a tongue extending from a front edge of the aperture into a recess in the door frame, said tongue being spaced from the top and bottom of the aperture, a door in a closed

A locked door assembly comprising a door frame, a latch plate secured to the door frame, said latch frame having an aperture and a tongue extending from a front edge of the aperture into a recess in the door frame, said tongue being spaced from the top and bottom of the aperture, a door in a closed position in the door frame, said door having a latch engaged in the aperture in the latch plate and in the recess in the door frame to retain the door in the closed positon, and a portable door lock, said portable door lock comprising a retainer with a plate-like body portion positioned against the latch plate between the door and the door frame, said plate-like body portion having a pair of vertically spaced coplanar fingers extending from a rear end of the plate-like body portion substantially perpendicularly to the plate-like body portion into the latch plate aperture and engaging the front edge thereof above and below the latch plate tongue, a retainer shaft extending forwardly from the retainer and having a screw-threaded portion, a holding bracket having a medial portion slidably mounted on the shaft and having rearwardly projecting holding arms at opposite ends, and a holding nut threadingly engaging the screw-threaded portion of the retainer shaft and engaging the bracket to hold the arms against the door frame and the door respectively and prevent the door from being opened.