公开(公告)号：CA2102293A1

公开(公告)日：1992-11-14

申请号：CA2102293

申请日：1992-03-02

Applicant: MOTOROLA INC

Inventor： ROLLINS THOMAS J ,  MOONEY CHARLES W ,  HOLDEN IRVING H

IPC: H04B1/08 ,  H04Q7/14 ,  H05K7/14 ,  H04Q7/18

Abstract: A shock isolator (30) is provided within the housing (38) of a selective call receiver to substantially increase the natural frequency of vibration of the housing (38) and the printed circuit boards (54, 56) within the housing. The shock isolator (30) is a body of elastomeric material, preferably butyl rubber, which has component receiving apertures (32) molded therein for receiving the components (46, 48, 50) on the printed circuit board while at the same time contacting the printed circuit board. Th? ??yl rubber has a damping of at least 25 % (preferably 50 %) and a Durometer of between 50 and 70 type A (prererably 60).

公开(公告)号：CA2056990C

公开(公告)日：1993-09-21

申请号：CA2056990

申请日：1990-08-03

Applicant: MOTOROLA INC

Inventor： MOONEY CHARLES W ,  HOLDEN IRVING H ,  SELINKO GEORGE J

IPC: B06B1/04 ,  G08B1/08 ,  G08B6/00 ,  H04Q7/14 ,  H04R1/46 ,  H04R11/06 ,  H04R25/00 ,  H02K33/18 ,  H02K33/02

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.

公开(公告)号：CA2139579A1

公开(公告)日：1994-01-20

申请号：CA2139579

申请日：1993-06-15

Applicant: MOTOROLA INC

Inventor： BRINKLEY GERALD E ,  HOLDEN IRVING H ,  MOONEY CHARLES W ,  MCKEE JOHN M

IPC: B06B1/04 ,  G08B6/00 ,  H04Q7/14 ,  G08B5/22 ,  H04B1/16

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.

公开(公告)号：CA2139579C

公开(公告)日：1998-04-14

申请号：CA2139579

申请日：1993-06-15

Applicant: MOTOROLA INC

Inventor： MCKEE JOHN M ,  MOONEY CHARLES W ,  HOLDEN IRVING H ,  BRINKLEY GERALD E

IPC: B06B1/04 ,  G08B6/00 ,  H04Q7/14 ,  H04B1/16

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.

公开(公告)号：CA2056990A1

公开(公告)日：1991-03-08

申请号：CA2056990

申请日：1990-08-03

Applicant: MOTOROLA INC

Inventor： MOONEY CHARLES W ,  HOLDEN IRVING H ,  SELINKO GEORGE J

IPC: B06B1/04 ,  G08B1/08 ,  G08B6/00 ,  H04Q7/14 ,  H04R1/46 ,  H04R11/06 ,  H04R25/00

Abstract: An apparatus for effecting a vibrating motion comprises a resonant planar armature, a housing, an electromagnetic device attached to the housing for effecting an alternating electromagnetic field, a magnetic device coupled to the armature and to the electromagnetic field for alternatively moving the armature in a first and a second direction in response to the electromagnetic field. The resonant planar armature comprises a plurality of planar spring members arranged regularly about a central planar region within a planar perimeter region of the armature, and the spring members provide a restoring force normal to a movement of the central region of the armature caused by the alternating electromagnetic field.