Anti-theft device with extractable armored column

Details Anti-theft device with extractable armored column Anti-theft device with extractable armored column

1990-09-17

1991-12-10

Lindsey, Rodney M.

Movable or removable closures

With traffic director or controller; e.g., one-way

404 6, E01F 1300

Patent

active

050706462

ABSTRACT:
Anti-theft device with extractable armored column for protecting areas in general and for barring doors and the like, having a steel base which has the shape of an at least partially box-like body and which has walls which are at least partially covered with plates of a drill-proof metallic alloy or the like; the base is horizontally buriably in the walking surface and is centrally provided with a through opening; a vertical prism-shaped container made of steel is rigidly applied to the opening, has both longitudinal and transverse reinforcement ridges and is completely embeddable below the walking surface; an armored column is telescopically and removably inserted in the container, is at least partially internally filled with material which has high resistance to abrasion and high hardness and has means for its anchoring to locking means present within the base.

REFERENCES:
patent: 693061 (1902-02-01), Pegg
patent: 3606258 (1971-09-01), Fitch
patent: 3660935 (1972-05-01), Boots
patent: 3698135 (1972-10-01), Boots et al.
patent: 4003161 (1977-01-01), Collins
patent: 4290585 (1981-09-01), Glaesever
patent: 4576508 (1986-03-01), Dickinson
patent: 4711608 (1987-12-01), Ghusn
patent: 4715742 (1987-12-01), Dickinson
patent: 4879554 (1989-11-01), Diaz-Silveira
patent: 4919563 (1990-04-01), Stace

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