Device for producing tactile-detectable warning surfaces and method for employing same

A stamp for forming a tactile-detectable warning surface in a moldable material, comprising:

• a. a mold member substantially planar in form and having an upper surface and a lower surface, the lower surface having a plurality of indentations distributed therein in a warning pattern;
• b. a plurality of form rails distributed between indentations on the lower surface of the mold member, projecting downward there from and bracketing each of said indentations on two or more sides so as to force an even and consistent distribution of the moldable material into the indentations when the form rails are worked downward into the surface of the moldable material;
• and,
• c. one or more handles affixed to the upper surface of the mold member.

A stamp for forming a tactile-detectable warning surface in a moldable material, comprising:

• a. a mold member substantially planar in form and having an upper surface and a lower surface, the lower surface having a plurality of indentations distributed therein in a warning pattern, each indentation comprising an air hole located centrally therein in communication with the upper surface;
• b. a plurality of form rails distributed between indentations on the lower surface of the mold member, projecting downward there from and bracketing each of said indentations on two or more sides so as to force an even and consistent distribution of the moldable material into the indentations when the form rails are worked downward into the surface of the moldable material;
• and,
• c. one or more handles affixed to the upper surface of the mold member.

A method for forming a tactile-detectable warning surface in a moldable material, the method comprising:

• a. providing a stamp, the stamp comprising:
• i. a mold member substantially planar in form and having an upper surface and a lower surface, the lower surface having a plurality of indentations distributed therein in a warning pattern, and,
• ii. a plurality of form rails distributed between indentations on the lower surface of the mold, member projecting downward there from and bracketing each of said indentations on two or more sides so as to force an even and consistent distribution of the moldable material into the indentations when the form rails are worked downward into the surface of the moldable material;
• b. applying a release agent to the stamp and to an area of the moldable material to be stamped;
• c. placing the stamp on the area of moldable material to be stamped when the moldable material is prepared to a consistency appropriate to stamping;
• d. working the form rails downward into the moldable material;
• and,
• e. removing the stamp from the surface of the moldable material.

A method for forming a tactile-detectable waming surface in a moldable material, the method comprising:

• a. providing a stamp, the stamp comprising:
• i. a mold member substantially planar in form and having an upper surface and a lower surface, the lower surface having a plurality of indentations distributed therein in a warning pattern, each indentation comprising an air hole located centrally therein in communication with the upper surface;
• ii. a plurality of form rails distributed between indentations on the lower surface of the mold member, projecting downward there from and bracketing each of said indentations on two or more sides so as to force an even and consistent distribution of the moldable material into the indentations when the form rails are worked downward into the surface of the moldable material;
• and,
• iii. one or more handles affixed to the upper surface of the mold member;
• b. applying a release agent to the stamp and to an area of the moldable material to be stamped;
• c. placing the stamp on the area of moldable material to be stamped when the moldable material is prepared to a consistency appropriate to stamping;
• d. working the form rails downward into the moldable material until a portion of the moldable material is visible at each air hole;
• and,
• e. removing the stamp from the surface of the moldable material by lifting up on the one or more handles.