High-voltage switches with arc preventing or extinguishing devic – Arc preventing or extinguishing devices – Operating mechanism structure or arrangement
Reexamination Certificate
2005-11-22
2005-11-22
Scott, James R. (Department: 2832)
High-voltage switches with arc preventing or extinguishing devic
Arc preventing or extinguishing devices
Operating mechanism structure or arrangement
C200S400000, C192S066100
Reexamination Certificate
active
06967302
ABSTRACT:
A spring-loaded operating mechanism for a high-voltage circuit-breaker comprises, between a motor and a trigger shaft, a freewheel-type coupling device which comprises first and second friction members (5, 6) coaxially mounted on a secondary shaft (1). The first friction member (5) is screwed onto the secondary shaft (1) and the second friction member can freewheel about the secondary shaft (1) while being disposed between the first member and an axial abutment (8). The two members (5, 6) are substantially in abutment one against the other along the secondary shaft (1), and the first member is screwed or is unscrewed along the secondary shaft depending on whether it is rotated by the shaft or by the second member. The device does not require any greasing; it operates without maintenance. In addition, the forces exerted by one friction member on the other are low, thereby improving the reliability of the operating mechanism.
REFERENCES:
patent: 4762971 (1988-08-01), Yabe
patent: 6041902 (2000-03-01), Wiley
patent: 657 552 (1929-03-01), None
patent: 1 434 962 (1966-04-01), None
Alstom T & D S.A.
Scott James R.
LandOfFree
Freewheel coupling device for a spring-loaded operating... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Freewheel coupling device for a spring-loaded operating..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Freewheel coupling device for a spring-loaded operating... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3485356