Abstract:
ELECTROMAGNETIC RESONANT VIBRATOR An apparatus (58) for effecting a vibrating motion comprises a resonant planar armature (2), a housing, an electromagnetic device attached to the housing for effecting an alternating electromagnetic field, a magnetic device coupled to the armature (2) and to the electromagnetic field for alternatively moving the armature (2) in a first and a second direction in response to the electromagnetic field. The resonant planar armature (2) comprises a plurality of planar spring members (50, 52, 52, and 56) arranged regularly about a central planar region within a planar perimeter region of the armature (2), and the spring members provide a restoring force normal to a movement of the central region of the armature (2) caused by the alternating electromagnetic field.
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.
Abstract:
A resonant armature system (109, 114, 116) for generating a vibrating motion in response to an alternating excitation force comprises at least two planar suspension members (109), substantially parallel t o each other and separated by a distance. The planar suspension member (109) comprises a plurality of independent planar sprin g members (112) arranged regularly about a central planar region (110) within a planar perimeter region (108). The resonant armature system (109, 114, 116) further comprises 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 fundamenta l mode resonant frequency.