High security door lock
First Claim
Patent Images
1. A high security door lock comprising:
- crossbar means adapted for mounting on a door;
keeper means adapted for mounting on a door frame;
pin means for mechanically coupling said crossbar means to said keeper means;
said pin means including projection means integrally formed therewith;
said keeper means including at least one slot for receiving said pin means and said projection means;
locking channel means integrally formed with said keeper means and oriented at an angle to said slot for receiving said projection means upon insertion of said projection means through said slot and rotation of said pin means; and
biasing means coacting with said pin means for holding said projection means in said locking channel means and preventing coupling of said crossbar means for said crossbar means from said keeper means absent depression and rotation of said pin means.
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Abstract
A high security door lock having a crossbar mounted on a door and a keeper mounted on the door frame. A pin with at least one projection is provided to secure the crossbar to the keeper by inserting the pin through at least one slot in the keeper. A locking channel is provided integral with the keeper and located at an angle to the slot in the keeper. When the pin is inserted into the keeper and rotated, the pin projection seats in the locking channel. A biasing means is provided to coact with the pin to hold the projection in the locking channel and prevent uncoupling of the crossbar from the keeper absent depression and rotation of the pin.
22 Citations
19 Claims
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1. A high security door lock comprising:
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crossbar means adapted for mounting on a door; keeper means adapted for mounting on a door frame; pin means for mechanically coupling said crossbar means to said keeper means; said pin means including projection means integrally formed therewith; said keeper means including at least one slot for receiving said pin means and said projection means; locking channel means integrally formed with said keeper means and oriented at an angle to said slot for receiving said projection means upon insertion of said projection means through said slot and rotation of said pin means; and biasing means coacting with said pin means for holding said projection means in said locking channel means and preventing coupling of said crossbar means for said crossbar means from said keeper means absent depression and rotation of said pin means. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An improved door lock having a crossbar, a keeper having spaced members for receiving the crossbar therebetween and a pin, the spaced members having apertures for receiving said pin;
- the improvement comprising;
projection means integrally formed with said pin; slots adjoining said apertures for enabling said projection means to pass therethrough upon receiving said pin; said pin mechanically coupling the crossbar to the keeper; locking channel means integral with one of said spaced members and at an angle to said slot in said spaced member, said locking channel means adapted to receive said projection means; biasing means for holding said projection means in said locking channel to prevent uncoupling of the crossbar from the keeper absent depression and rotation of the pin.
- the improvement comprising;
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12. A high security door lock comprising:
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a crossbar means for mounting on a door; a yoke shaped keeper means for mounting on a door frame; said yoke shaped keeper means having upper and lower spaced members for receipt of said crossbar therebetween; said uper and lower spaced members including apertures with slots in communication with said apertures; a pin means for receipt in aid apertures to mechanically secure said crossbar means to said keeper means, said pin means including projection means for passage through said slots; locking channel means integrally formed with one of said spaced members of said keeper means and oriented at an angle to said slot in said one spaced member for receiving said projection means upon rotation of said pin means after said projection means has passed through said aperture of said one spaced member; an outward projection means integral with said crossbar means and located at the end remote from the door which in cooperation with the upper and lower members of the keeper means and said pin inhibits jimmying of the door; and biasing means coacting with said pin means for holding said projection means in said locking channel means to prevent withdrawal therefrom absent depression and rotation of said pin means. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19)
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Specification