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US 6,641,185 B2Granted
Door lock having U-bar and custom striker plate
OwnerDaniel Hale, Ross Gunninventors
Life of this patent
Estimating the term…
Abstract
A door locking apparatus for use on a door and an associated door jamb is provided. The door locking apparatus includes a custom striker plate and a U-shaped element or U-Bar. The U-shaped element has two arm portions and the custom striker plate has two arm receiving apertures for receiving the arm portions of the U-shaped element. The U-shaped element partially encircles the shank of a door knob assembly and the two arm portions fit into the two arm receiving apertures to lock the door. A device for keeping the U-shaped element in a locked position is built into the U-shaped element. A preferred embodiment utilizes a notch on the U-shaped element to keep the device in a locked position.
Claims20
A door locking apparatus for use on a door and an associated door jamb, said door locking apparatus having a custom strike plate and a U-shaped element;
- said U-shaped element having two arm portions;
- said door jamb having said strike plate mounted there on;
- said door having a door knob assembly attached to said door, said door knob assembly having a shank and a door knob on the inside side of said door, said door locking apparatus comprising:
- a strike plate that can be securely fastened to a door jamb, said strike plate having apertures configured so that screws can be utilized to fasten said strike plate to said door jamb;
- said strike plate having an aperture so that a bolt of said door knob assembly can be placed therein in order to hold said door in a closed position;
- said strike plate having an extended section extending outwardly from said door jamb;
- said extended section of said strike plate having two arm receiving apertures thereon, said two arm receiving apertures configured so that said two arm portions of said U-shaped element can be placed therein;
- a U-shaped element having a U-shaped section configured to partially encircle said shank portion of said door knob assembly between said door knob and said door;
- said U-shaped element having two arm portions extending in a generally horizontal direction;
- said strike plate and said U-shaped element configured so that when said door is closed and said U-shaped element partially encircles said shank of said door knob assembly, and said two arm portions of said U-shaped element are inserted into said two arm receiving apertures of said strike plate, said door locking apparatus is in a locked position, and said door is in a locked condition;
- said two arm portions of said U-shaped element having notches thereon, said notches configured so that gravitational forces on said arm portions of said U-shaped element will cause said arm portions to catch on said two arm receiving apertures on said strike plate in order to prevent said U-shaped element from inadvertently slipping out of said arm apertures of said strike plate;
- thereby keeping said door locking apparatus in a locked position, and keeping said door locked.
9 more elements
A door locking apparatus for use on a door and an associated door jamb, said door locking apparatus having a custom strike plate and a U-shaped element;
- said U-shaped element having two arm portions;
- said door jamb having said strike plate mounted there on;
- said door having a door knob assembly attached to said door, said door knob assembly having a shank and a door knob on the inside of said door, said door locking apparatus comprising:
- a strike plate that can be securely fastened to a door jamb, said strike plate having apertures configured so that screws can be utilized to fasten said strike plate to said door jamb;
- said strike plate having an aperture so that a bolt of said door knob assembly can be placed therein in order to hold said door in a closed position;
- said strike plate having an extended section extending outwardly from said door jamb;
- said extended section of said strike plate having two arm receiving apertures thereon, said two arm receiving apertures configured so that said two arm portions of said U-shaped element can be placed therein;
- a U-shaped element having a U-shaped section configured to partially encircle said shank portion of said door knob assembly between said door knob and said door;
- said U-shaped element having two arm portions extending in a generally horizontal direction;
- said strike plate and said U-shaped element configured so that when said door is closed and said U-shaped element partially encircles said shank of said door knob assembly, and said two arm portions of said U-shaped element are inserted into said two arm receiving apertures of said strike plate, said door locking apparatus is in a locked position, and said door is in a locked condition;
- said two arm portions of said U-shaped element having a built in means for keeping said U-shaped element in a locked position;
- thereby preventing said U-shaped element from inadvertently slipping out of said arm apertures of said strike plate;
- thereby keeping said door locking apparatus in a locked position, and keeping said door locked.
10 more elements
The door locking apparatus of claim 18 wherein said U-shaped element is made of steel.
A door locking apparatus for use on a door and an associated door jamb, said door locking apparatus having a custom strike plate and a U-shaped element;
- said U-shaped element having two arm portions;
- said door jamb having said strike plate mounted there on;
- said door having a door knob assembly attached to said door, said door knob assembly having a shank and a door knob on the inside side of said door;
- said door locking apparatus comprising:
- a metal strike plate that can be securely fastened to a door jamb, said strike plate having apertures configured so that screws can be utilized to fasten said strike plate to said door jamb;
- said strike plate having an aperture so that a bolt of said door knob assembly can be placed therein in order to hold said door in a closed position;
- said strike plate having an extended section extending outwardly from said door jamb;
- said extended section of said strike plate having two arm receiving apertures thereon, said two arm receiving apertures configured so that said two arm portions of said U-shaped element can be placed therein;
- a metal U-shaped element having a U-shaped section configured to partially encircle said shank portion of said door knob assembly between said door knob and said door;
- said U-shaped element having two arm portions extending in a generally horizontal direction;
- said strike plate and said U-shaped element configured so that when said door is closed and said U-shaped element partially encircles said shank of said door knob assembly, and said two arm portions of said U-shaped element are inserted into said two arm receiving apertures of said strike plate, said door locking apparatus is in a locked position, and said door is in a locked condition locked;
- said two arm portions of said U-shaped element having notches thereon, said notches configured so that gravitational forces on said arm portions of said U-shaped element will cause said arm portions to catch on said two arm receiving apertures on said strike plate in order to prevent said U-shaped element from inadvertently slipping out of said arm apertures of said strike plate;
- thereby keeping said door locking apparatus in a locked position, and keeping said door locked.
10 more elements
Dependencies are inferred from the claim text.