Collapsible marker cone

Details Collapsible marker cone Collapsible marker cone

1995-10-13

1996-10-22

Will, Thomas B.

Signals and indicators

Street traffic

Portable

404 10, E01F 900

Patent

active

055666388

ABSTRACT:
A collapsible marker cone for use with sporting events, such as in-line skating, comprising a base and a conical portion. The conical portion is attached to the base along a vertical axis and includes weakened regions such as vertically disposed slots which allow the conical portion to easily collapse, along the vertical axis, when a predetermined force, such as the weight of a falling person, is applied to the marker cone along the vertical axis. The weakened regions allow the conical portion to collapse prior to injuring the falling person.

REFERENCES:
patent: D327231 (1992-06-01), Mazzola
patent: 3081054 (1963-03-01), Westervelt
patent: 3521596 (1970-07-01), Schlein
patent: 3555550 (1971-01-01), Walters
patent: 4197807 (1980-04-01), Campbell
patent: 4245050 (1981-03-01), Barnard
patent: 5036791 (1991-08-01), Thurston
patent: 5305705 (1994-04-01), Gagliano

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