Curtis W Meverden

US Patent:

6431788, Aug 13, 2002

Filed:

Nov 13, 1998

Appl. No.:

09/191330

Inventors:

Thomas P. Hedblom - Eagan MN
Eric E. Rice - Woodbury MN
Curtis W. Meverden - White Bear Township MN
Gregory E. Gilligan - Hastings MN
Thomas D. Krech - Cottage Grove MN

Assignee:

3M Innovative Properties Company - St. Paul MN

International Classification:

E01F 906

US Classification:

404 14, 404 12, 404 17

Abstract:

A pavement marking and methods of making pavement markings are disclosed in which the pavement markings exhibit enhanced wear resistance to, e. g. , snowplow blades. The pavement markings include elongated protuberances in which successive elongated protuberances overlap along at least the longitudinal direction and may also overlap in a direction transverse to the longitudinal axis. Other protuberances are interspersed between the elongated protuberances to improve retroreflectivity. The elongated protuberances are provided to support, e. g. , a snowplow blade moving over the pavement marking.