Internal door lock security reinforcement and method of assembly

Details Internal door lock security reinforcement and method of assembly Internal door lock security reinforcement and method of assembly

1980-03-17

1981-08-04

Kannan, Philip C.

Movable or removable closures

Panel with closure feature

Modified to accommodate lock or latch

E06B 300

Patent

active

042814790

ABSTRACT:
A hollow door containing a core or filler is provided with a door lock security reinforcement which is assembled by means of a series of steps accomplished subsequent to fabrication of a core filled door. The assembly is achieved by forming a bore through the core extending from a horizontally aligned lock provision and hinge provision. One end of a security tube inserted within the core bore engages a positioner element in turn engaging a subsequently installed lock set while the other end of the security tube is precluded from outward axial displacement by the overlying fixation of a hinge leaf to the hinge provision.

REFERENCES:
patent: 2948366 (1960-08-01), Kelly et al.
patent: 3250041 (1966-05-01), Anger
patent: 3383802 (1968-05-01), Janssens
patent: 3512305 (1970-05-01), Multer
patent: 3623757 (1971-11-01), Schlage
patent: 3633312 (1972-01-01), Yeager
patent: 3821884 (1974-07-01), Walsh
patent: 3894357 (1975-07-01), Stanfield
patent: 3987588 (1976-10-01), Imperial et al.
patent: 4118895 (1978-10-01), Governale
patent: 4218848 (1980-08-01), Nelson

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