Electricity: magnetically operated switches – magnets – and electr – Electromagnetically actuated switches – Automatic circuit-interrupting devices
Reexamination Certificate
2006-04-25
2006-04-25
Donovan, Lincoln (Department: 2832)
Electricity: magnetically operated switches, magnets, and electr
Electromagnetically actuated switches
Automatic circuit-interrupting devices
C218S147000
Reexamination Certificate
active
07034642
ABSTRACT:
A moving contact assembly for a high-current interruption electric power switching apparatus has an inner carrier for the contact fingers that is rigidly held in a withstand position in an outer carrier by a spring biased cam follower pin engaging a cam profile on the inner carrier and configured to positively seat an inner carrier stop against an outer carrier stop on the outer carrier and to rapidly drive the inner carrier to a blow open position in response to a fault. The cam profile has an extended width divided between spaced apart cam profile sections to absorb the high closing and withstand forces. An abutment on the outer carrier resists bowing of the cam follower pin between the cam profile sections. Complementary convex and concave partial cylindrical surfaces on the inner carrier and a gas shield on the moving assembly carrier body maintain an arc gas seal during blow open.
REFERENCES:
patent: 4887057 (1989-12-01), Gula et al.
patent: 4891617 (1990-01-01), Beatty et al.
patent: 4891618 (1990-01-01), Paton
patent: 4916419 (1990-04-01), Winter
patent: 5089795 (1992-02-01), Morgan et al.
patent: 5337031 (1994-08-01), Castonguay et al.
patent: 5552754 (1996-09-01), Sharaf
patent: 5874874 (1999-02-01), Helms et al.
patent: 5912605 (1999-06-01), Eberts
patent: 6570116 (2003-05-01), Maulandi et al.
Chien Yun-Ko N.
Miller Jeffrey A.
Pendrick Thomas C.
Rakus Paul R.
Schulman Michael B.
Donovan Lincoln
Eaton Corporation
Moran Martin J.
LandOfFree
Blow open moving contact assembly for electric power... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Blow open moving contact assembly for electric power..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Blow open moving contact assembly for electric power... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3603284