3m Innovative Properties Company

Other

Eric E Rice

Thomas P Hedblom

Joseph M McGrath

Terry L Bescup

Gary W Maier

Randall H Helland

Gregory Edward Gilligan

Thomas D Krech

Curtis W Meverden

Thomas P Heblom

Golf tee

A multi-purpose tee has a head that terminates into an elongated shaft. The head has a first sidewall and a second sidewall that are joined. The first sidewall has a flat inner surface and an outer surface that angles inwardly from a top edge as the outer surface extends toward the shaft. The second sidewall is cone or bowl shaped and creates a space between the first and second sidewall. The shaft has a first surface, a second surface, a square end and sides.

Multi-purpose golf tee

The invention relates to a pavement marking composition comprising ceramic fibers. The ceramic fibers are preferably randomly dispersed within a polymeric material. The polymeric material preferably comprises a substantially non-crosslinked elastomer. The pavement marking composition is preferably formed into a sheet material such as a tape.

Pavement marking composition comprising ceramic fibers

Composite pavement markings with improved wear resistance and other advantages are disclosed. The composite pavement markings typically include a unitary retroreflective article attached to a base pavement marking. With the composite construction, different portions of the pavement marking are provided at different heights. The taller portions of the pavement marking may preferably offer some protection to the shorter portions from wear caused by vehicle traffic and/or snowplow blades. By combining two different retroreflective pavement markings to form the composite pavement markings of the present invention, a combination of features and properties may be obtained that is provided by neither of the pavement markings alone. Methods of manufacturing composite pavement markings are also disclosed.

Composite pavement markings

The articles of the present invention comprise pavement marking articles which are retroreflective under dry and/or wet conditions. The articles comprise a monolayer of exposed-lens optical elements, a spacing layer, and a reflective layer. The present invention also provides a method of making said pavement marking articles.

Pavement marking articles having enhanced retroreflectivity under dry or wet conditions and method for making same

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.

Wear resistant pavement marking

The present invention comprises a method for making retroreflective elements which are retroreflective under dry and/or wet conditions. The method provides a means for placing optical elements and/or skid-resistant particles on selected surfaces.

Method for making retroreflective elements having enhanced retroreflectivity under dry and/or wet conditions

Retroreflective articles of the invention comprise a continuous base layer and a multi-color polymeric top layer. The invention also includes methods of making such retroreflective articles. The retroreflective articles of the invention provide excellent daytime contrast while maintaining nighttime retroreflectivity. Variously colored segments of polymer are directly and either sequentially or simultaneously coated onto a continuous backing to form a multi-colored top layer. Durability over existing multi-colored retroreflective articles is enhanced by use of a continuous base layer.

Growing community of inventors

Woodbury, MN, United States of America

Eric E Rice