Abstract: Disclosed herein is an adjustable tongue assembly for a trailer including an elongate substantially enclosed housing with a lengthwise slot disposed horizontally at the front of the trailer bed. A guide carriage is movably seated in the housing, and the guide carriage is attached to a bracket attached exteriorly of the housing through the lengthwise slot. The guide carriage is journalled to a positioning screw that is rotatably seated lengthwise inside the housing. The positioning screw is coupled to a motor which drives the guide carriage laterally along the internal chamber. A trailer tongue is attached to the external bracket. Selective actuation of the drive motor causes the positioning screw to rotate, thereby moving the roller guide carriage laterally left or right, and thus carrying the bracket and trailer tongue therewith.

Abstract: An adjustable trailer hitch which provides an operator improved remote control of the lateral position of a trailer hitch, and simplifies the procedure of hooking a trailer to a tow vehicle. The trailer hitch comprises a hitch assembly (such as a ball receptacle) attached to a roller carriage which moves from side-to-side along a bumper-like housing. The roller carriage engages a positioning screw, and an electric motor mounted in a sealed end cap powers the positioning screw. Rotation of the screw translates into rightward or leftward lateral movement of the roller carriage and consequently of the ball receptacle assembly. Motion of the ball receptacle assembly is controlled via a wireless remote control unit. Such direct control over the precise lateral position of the trailer hitch enables the operator to accurately steer the trailer when traveling in reverse.

Abstract: A dental floss or tape has a multifilament polyamide core and a continuous PTFE coating applied by passing the core through an aqueous PTFE dispersion and heating the deposited particles such that they coalesce into a layer without substantially effecting the structure of the core.