Mechanical barrier

Details Mechanical barrier Mechanical barrier

1976-03-01

1977-01-18

Kannan, Philip C.

Movable or removable closures

Check or key controlled

49 49, 49131, E01F 1300

Patent

active

040031616

ABSTRACT:
A collapsible or removable post which may be keylocked in its upright position and in its stowed position. The post may be used to hold a sign or to act as a temporary barrier in order to block a traffic lane, a driveway or the access to, or egress from, a parking spot. The device comprises a movable inner post telescopically inserted into a ground imbedded container. A locking lever inside the post, actuated by a keylock, secures it at various height positions above ground level.

REFERENCES:
patent: 1515611 (1924-11-01), O'Connor
patent: 3061960 (1962-11-01), Dull
patent: 3086430 (1963-04-01), Emmel
patent: 3417508 (1968-12-01), Sprung
patent: 3564769 (1971-02-01), Wilson et al.
patent: 3673734 (1972-07-01), Goldberg
patent: 3698135 (1972-10-01), Boots et al.

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