Patent classifications
H
ELECTRICITY
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H01
ELECTRIC ELEMENTS
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H01H
ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
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H01H50/86
Means for introducing a predetermined time delay between the initiation of the switching operation and the opening or closing of the contacts
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H01H50/88
Mechanical means, e.g. dash-pot
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H01H50/90
the delay effective in both directions of operation
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H01H50/90

Multipole electromechanical switching device
09805883 · 2017-10-31 · ·

A method and apparatus using electromagnetic switching in a two-step connection process is provided to minimize surge currents and torque oscillations in three-phase motors during starts.

Multipole electromechanical switching device
09805883 · 2017-10-31 · ·

A method and apparatus using electromagnetic switching in a two-step connection process is provided to minimize surge currents and torque oscillations in three-phase motors during starts.

Multipole electromechanical switching device
10347440 · 2019-07-09 · ·

A method and apparatus using electromagnetic switching in a two-step connection process is provided to minimize surge currents and torque oscillations in three-phase motors during starts.

Multipole electromechanical switching device
10347440 · 2019-07-09 · ·

A method and apparatus using electromagnetic switching in a two-step connection process is provided to minimize surge currents and torque oscillations in three-phase motors during starts.

MULTIPOLE ELECTROMECHANICAL SWITCHING DEVICE
20180047527 · 2018-02-15 ·

A method and apparatus using electromagnetic switching in a two-step connection process is provided to minimize surge currents and torque oscillations in three-phase motors during starts.

MULTIPOLE ELECTROMECHANICAL SWITCHING DEVICE
20180047527 · 2018-02-15 ·

A method and apparatus using electromagnetic switching in a two-step connection process is provided to minimize surge currents and torque oscillations in three-phase motors during starts.