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US 4,290,635 AGranted
Door locking device
AssigneePort-A-Lock Incorporated
InventorKenneth B. McKenzie
Life of this patent
Estimating the term…
Abstract
There is provided a portable door lock having an elongated flat bar for insertion between a door and a door frame, a slide block on the flat bar, and a brace member which supports two spaced apart contact surfaces such that one surface can rest against the door and the other can rest against either the frame or the wall adjacent the frame. The brace member is pivotally mounted, and releasable means are provided to prevent the slide block from moving along the flat bar away from the door. The slide block thus maintains the brace member close to and against the door/frame surfaces.
Claims7
A portable door lock comprising:
- an elongated flat bar for insertion between a door and a door frame, the flat bar having flat sides, narrow upper and lower edges, and hook means at one end for engaging the frame,
- a slide block having an internal opening for receiving said flat bar such that the slide block is slidable along the flat bar,
- a brace member pivotally mounted on the slide block and supporting two spaced contact surfaces projecting in the direction of the hook means, whereby one surface can rest against the door and the other against either the frame or the wall adjacent the frame, the contact surfaces being formed by resilient plastic tubes mounted on metal posts,
- and releasable means for preventing the slide block from moving along the flat bar in the direction away from the hook means.
1 more element
Dependencies are inferred from the claim text.