TH15399U - Door lock enhancement device - Google Patents

Abstract

Page 1 of 1. Summary of the Invention: A door locking device made of aluminum or stainless steel in a C-shape, pressed and secured to the door and frame. The two C-shaped legs are formed by cutting, planing, drilling, and turning. A screw hole is drilled in the center of the top to allow the screw end to be inserted from the end of the plate that attaches to the doorknob slot. The two parts are assembled and secured with a female nut. The plate that attaches to the doorknob slot is made of stainless steel, formed by bending, cutting, rolling, and welding with a bending and cutting machine. The end has a screw to be inserted into the aluminum or stainless steel C-shape that presses against the door and frame, and is secured with a female nut to prevent movement or wobbling.

Claims (1)

Revised 15/03/2019, Page 1 of 1 page. Claims 1. Door locking device has special characteristics: It consists of a rectangular plate folded into a C shape (1) with a hole (6) in the center at the top for the end of the nut (5) to be inserted through for attachment to the door; a fastening plate (2) with a doorknob slot on the door frame, which is a plate with two folded claws at the center hole (4) for attaching to the doorknob slot on the door frame where it will be installed, where a male nut (5) at the end of the fastening plate is attached to the doorknob slot for insertion into the rectangular plate folded into a C shape (1) to press and fasten to the door and door frame; a female nut (3) which has an internal thread (7) at the end to be tightened to the male nut (5) that has been assembled with the fastening plate attached to the door slot. -------------------------------------------------------------------------- Page 1 of 1 page Claim 1. Door locking device consists of an aluminum or stainless steel C-shaped (1) with a hole (6) at the top center for inserting the end of the aluminum male nut (5) through for attachment to the door; a fastening plate (2) for attaching to the doorknob slot on the door frame, which is a stainless steel plate with teeth that fold at two sides at the hole in the center (4) for attaching to the doorknob slot on the door frame to be installed, where the male nut (5) at the end of the fastening plate is attached to the doorknob slot for inserting into the aluminum or stainless steel C-shaped (1) to press and fasten to the door and door frame; it has a special feature: a female nut (3) which is square in shape with a hole drilled in the center but not through, and the end is made of internal thread (7) for fastening to the male nut (5) that has been assembled with the fastening plate to the door slot.