Thread tensioner
AssigneeIro AB
InventorRenato Comotto
Life of this patent
Estimating the term…
Abstract
The invention relates to a thread tensioner comprising tensioning elements that define a thread tensioning zone. In said tensioner, the first tensioning element rests on a stop and the second tensioning element can be pressed against the first tensioning element by means of an adjustable magnet contact force produced by a magnet armature and a repelling magnet actuator. The stop is located on the opposite side of the thread tensioning zone from the first tensioning element. The first tensioning element is stressed by a spring force in the direction of the second tensioning element against the stop. Said spring force is greater in the thread tensioning zone than the respectively adjusted maximum magnetic contact force. The mass of the first tensioning element is smaller than the mass of the magnet armature.
Claims14
Thread tensioner, comprising first and second tensioning elements defining a thread tensioning zone, of which tensioning elements the first tensioning element is co-acting with a stationary stop, while the second tensioning element is pressed against the first tensioning element with an adjustable pressing force by means of a magnet armature connected to the second tensioning element and a repelling magnet actuator, wherein the stationary stop is provided at the side of the thread tensioning zone remote from the first tensioning element, that the first tensioning element is loaded by a spring force in the direction towards the second tensioning element and against the stationary stop, that the spring force is larger in the tensioning zone than the respective adjusted maximum pressing force, and that the mass of the first tensioning element is smaller than the mass of the magnet armature.
Dependencies are inferred from the claim text.