Abstract: A first steer tube has a first upper side and a first lower side. A second steer tube has a second upper side and a second lower side. A first axle mounting structure is configured to connect the first lower side to a first end of an axle assembly of a wheel. A second axle mounting structure is configured to connect the second lower side to a second end of the axle assembly. A first head tube assembly is disposed to the first lower side. A second head tube assembly is disposed to the second lower side. A support structure includes a first pivot connection and a second pivot connection. A first arm connects the first head tube assembly and the first pivot connection. A second arm connects the second head tube assembly and the second pivot connection.

Abstract: Earbuds with one or more enhanced features, including sound quality, perceived auditory effects, audio control, and user interface. Sound quality is improved using multiple speakers and isobaric chambers. Additional speaker and isobaric chamber can be in an ear hook. Elongated scalar coils modify or enhance the audio quality of an earbud and its auditory effects on a user. A users voice is utilized to record and to generate a user-specific audio filter that is applied to stored audio files to generate modified audio files. An earbud can include an array of capacitive sensors arranged on a stem extending from the earbud. An earbud device can also have a user interface that incorporates a rotary switch that is part of a stem that extends from the main body of the earbud. The interface can include a pressure switch positioned on the stem.

Abstract: A first steer tube has a first upper side and a first lower side. A second steer tube has a second upper side and a second lower side. A first axle mounting structure is configured to connect the first lower side to a first end of an axle assembly of a wheel. A second axle mounting structure is configured to connect the second lower side to a second end of the axle assembly. A first head tube assembly is disposed to the first lower side. A second head tube assembly is disposed to the second lower side. A support structure includes a first pivot connection and a second pivot connection. A first arm connects the first head tube assembly and the first pivot connection. A second arm connects the second head tube assembly and the second pivot connection.

Abstract: A coated material contains a substrate and a protective coating in which the protective coating is formed of a plurality of monomer units covalently bonded to a surface of a substrate such that each monomer unit contains a hydrophobic tail group covalently bonded to the surface of the substrate through an organic linking group. The protective coating is formed by a process including the steps of contacting the surface of the substrate with a surface activator containing a fluoride-containing compound and an organic solvent to form an activated surface, contacting the activated surface with a protective reagent to form an initial coated surface, and contacting the initial coated surface with a thinning agent containing a fluoride-containing compound and a surfactant to form the protective coating.

Abstract: A method for coating a surface of a material involves contacting a surface of a material with a surface activator containing a fluoride-containing compound and an organic solvent to form an activated surface, contacting the activated surface with a protective reagent to form an initial coated surface, and contacting the initial coated surface with a thinning agent containing a fluoride-containing compound and a surfactant to from a final coated surface, wherein the final coated surface is coated with a protective coating that is covalently bonded to the surface of the material.

Abstract: Methods and apparatuses are provided for creation of discrete corrosion defects with a wide range of diameter to depth aspect ratios for painted test standards. Also provided are methods for use of those test standards to characterize the corrosion under paint detection threshold, statistical reliability, and accuracy of NDI and/or NDT techniques including but not limited to flash thermography, ultrasonic testing, eddy current testing, microwave testing, shearography, and infrared testing.

Abstract: Methods and apparatuses are provided for creation of discrete corrosion defects with a wide range of diameter to depth aspect ratios for painted test standards. Also provided are methods for use of those test standards to characterize the corrosion under paint detection threshold, statistical reliability, and accuracy of NDI and/or NDT techniques including but not limited to flash thermography, ultrasonic testing, eddy current testing, microwave testing, shearography, and infrared testing.