Measuring and testing – Speed – velocity – or acceleration – Acceleration determination utilizing inertial element
Reexamination Certificate
2011-01-18
2011-01-18
Kwok, Helen C. (Department: 2856)
Measuring and testing
Speed, velocity, or acceleration
Acceleration determination utilizing inertial element
C073S514170, C073S649000
Reexamination Certificate
active
07870788
ABSTRACT:
An accelerometer or a seismometer using an in-plane suspension geometry having a suspension plate and at least one fixed capacitive plate. The suspension plate is formed from a single piece and includes an external frame, a pair of flexural elements, and an integrated proof mass between the flexures. The flexural elements allow the proof mass to move in the sensitive direction in the plane of suspension while restricting movement in all off-axis directions. Off-axis motion of the proof mass is minimized by the use of intermediate frames disbursed within and between the flexural elements. Intermediate frames can include motion stops to prevent further relative motion during overload conditions. The device can also include a dampening structure, such as a spring or gas structure that includes a trapezoidal piston and corresponding cylinder, to provide damping during non-powered states. The capacitive plate is made of insulating material. A new method of soldering the capacitive plate to the suspension plate is also disclosed.
REFERENCES:
patent: 6808955 (2004-10-01), Ma
patent: 6852926 (2005-02-01), Ma
patent: 6857183 (2005-02-01), Famworth
patent: 6883638 (2005-04-01), Maxwell et al.
patent: 6900702 (2005-05-01), Youngner
patent: 6903452 (2005-06-01), Ma
patent: 6916731 (2005-07-01), Shimokawa
patent: 7030432 (2006-04-01), Ma
patent: 7036374 (2006-05-01), Pike et al.
patent: 7406002 (2008-07-01), Schleisiek et al.
Pike William T.
Standley Ian
Kinemetrics, Inc.
Kwok Helen C.
Trojan Law Offices
LandOfFree
Fabrication process and package design for use in a... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Fabrication process and package design for use in a..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Fabrication process and package design for use in a... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2716266