Patent ID: 6238121
Filing Date: 2001-05-29
Classification: B23K,Y10T

Abstract:
A friction welded assembly comprising:a. a fastening member having a lower end with a central projection extending a predetermined distance from the bottom thereof and an annular face formed at the bottom radially outwardly from the central projection in spaced relation thereto;b. an annular recess extending upwardly from the bottom and formed in the space between the annular face and the central projection;c. a plate member of predetermined thickness that is less than the length of the central projection of the fastening member;d. a hole formed in the plate member adopted to receive the central projection of the fastening member in a close-fitting and stable manner, and with the central projection projecting outwardly therefrom;e. an axis formed at the center of the hole in the plate member with the central projection lying in the axis;f. the fastening member positioned upon the plate member by the central projection engagement in the hole in the plate member; andg. the fastening member rotated along the axis for a predetermined time to form a friction weld at the annular face to fasten fastening member to the plate member.