公开(公告)号：MX9303874A

公开(公告)日：1994-01-31

申请号：MX9303874

申请日：1993-06-28

Applicant: MOTOROLA INC

Inventor： BRINKLEY GERALD EUGENE ,  MCKEE JOHN MICHAEL ,  MOONEY CHARLES W ,  HOLDEN IRVIN HAROLD

IPC: B06B1/04 ,  G08B6/00 ,  H04Q7/14 ,  H04M1/00

Abstract: A resonant armature system (109, 114, 116) for generating a vibrating motion in response to an alternating excitation force includes at least two planar suspension members (109), substantially parallel to each other and separated by a distance. The planar suspension member (109) includes a plurality of independent planar spring members (112) arranged regularly about a central planar region (110) within a planar perimeter region (108). The resonant armature system (109, 114, 116) further includes at least one movable mass (114) positioned between and coupled to the at least two planar suspension members (109) for resonating with the at least two planar suspension members (109) at a fundamental mode resonant frequency.