Breakaway sign post with magnetically coupled sections

Details Breakaway sign post with magnetically coupled sections Breakaway sign post with magnetically coupled sections

2008-03-11

2008-03-11

Hoge, Gary C. (Department: 3611)

Card, picture, or sign exhibiting

Signs

Magnetic attaching feature

C040S607040, C404S010000

Reexamination Certificate

active

11419725

ABSTRACT:
An improved sign post assembly (10) for roadway use is provided wherein a sign post (12) includes a lower section (16) adapted for anchoring to the earth, a mating upper section (20) and a magnetic coupling assembly (24) for maintaining the sections during normal use while permitting breakaway of the upper section (20) when the host (10) is struck by a vehicle. Preferably, the coupling assembly (24) includes a magnetic body (26) and a corresponding component (28) which is magnetically attracted to the body (26). In order to cause breakaway in a predetermined direction, the coupling assembly (24) has mating surfaces for the body (26) and component (28) which are in a stairstep configuration.

REFERENCES:
patent: 4171919 (1979-10-01), Willis
patent: 4236843 (1980-12-01), Chisholm
patent: 4619456 (1986-10-01), Meggs
patent: 5039100 (1991-08-01), Cortese
patent: 5340065 (1994-08-01), Thomas
patent: 5895169 (1999-04-01), Holm et al.
patent: 6390436 (2002-05-01), Barnes et al.
patent: 6422783 (2002-07-01), Jordan
patent: 6540196 (2003-04-01), Ellsworth
patent: 6739567 (2004-05-01), Curtis

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