ES245571U - A perfected dynamometric key. (Machine-translation by Google Translate, not legally binding) - Google Patents

Abstract

An improved key comprising a hollow tubular lever arm, an elongated hinge member housed within said hollow lever arm and carrying means of application to the load at one end thereof; and connected for rotation to said tubular lever arm next to it, with which it can be applied by said lever arm to said application means to the load, and said articulation member has a channel with inclined walls formed through the entire width of an end surface thereof that runs perpendicular to the direction of the elongation and located away from said application means to the load, and said channel is oriented transversely with respect to the plane of application of the pair; a pivot located within said tubular lever arm and shaped in the form of a rectangular prism and adapted for movement between a position seated in said channel and an angularly displaced position of said seated position; a piston member located inside said tubular lever arm and formed with an end surface perpendicular thereto with a channel defined therein oriented transversely relative to the application plane of the pair and extending over the entire width of said end surface at the end thereof closest to said means of application to the load and arranged to receive said pivot; load means anchored in relation to said tubular lever arm and positioned to elastically load said piston member toward said load applying means for urging said pivot toward said seated position with a predetermined force; and pivot retaining means located inside said tubular lever arm to define lateral limitations to inhibit the movement of said pivot perpendicular to the plane of application of the pair. (Machine-translation by Google Translate, not legally binding)