Abstract: Hollow composite dowel bar assemblies, their manufacture, and apparatus for manufacture. The dowel bar assemblies may include an elongate and hollow core, a protective jacket coating at least the sidewall exterior of the core, and a sealing structure coupled with each end of the combined core and jacket, that are configured to protect the core from the environment.

Abstract: Hollow composite dowel bar assemblies, their manufacture, and apparatus for manufacture. The dowel bar assemblies may include an elongate and hollow core, a protective jacket coating at least the sidewall exterior of the core, and a sealing structure coupled with each end of the combined core and jacket, that are configured to protect the core from the environment.

Abstract: Hollow composite dowel bar assemblies, their manufacture, and apparatus for manufacture. The dowel bar assemblies may include an elongate and hollow core, a protective jacket coating at least the sidewall exterior of the core, and a sealing structure coupled with each end of the combined core and jacket, that are configured to protect the core from the environment.

Abstract: An easel for use with a back-loading picture frame, which easel is readily attachable and detachable therefrom and intended for use primarily with picture frames formed from metal in extruded channel shapes. The easel preferably is of resilient extruded material and has a flat land member and a resilient yoke member extending at an angle thereto. The yoke is provided with a pair of spaced members, one member being adapted to be fit within the channel in one frame section adjacent a forward face of the frame and the other member fit within the channel adjacent a rear face of the frame section, said members adapted to be secured by means of spring pressure into locking engagement with means on the frame section and easily detached therefrom.