دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: in roller chain, the plate into which the pin link pins ends are immovably fixed. The pins are riveted to the link plate on one side and either riveted or fixed with cotters to the other pin link plate. pin packer n: a packer in which the packing element is held in position by brass or steel pins. When weight is put on the packer, two metal sleeves telescope, shearing the pins and allowing the element to fold and pack off.