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US 4,733,210 AGranted
Auxiliary switch hookup assembly in a motor contactor
AssigneeSiemens Aktiengesellschaft
InventorsJohann Bauer, Klaus-Dieter Paul
Life of this patent
Estimating the term…
Abstract
An auxiliary switch hookup assembly in a motor contactor includes a slide member biased by a spring and forming a portion of the limiting wall for the reception of an auxiliary switch. The spring force exerted by the biasing spring can be greater than a total force exerted by restoring and contact compression springs of the motor contactor.
Claims12
An auxiliary switch hookup assembly in a motor contactor, comprising:
- a motor contactor housing;
- an auxiliary switch including an auxiliary switch housing and an operating projection protruding from said housing;
- mounting means for releasably mounting said auxiliary switch housing to said motor contactor housing;
- support means movably disposed in said motor contactor housing for supporting a contact bridge, said support means being provided with an opening, said operating projection being insertable through said opening and engageable with edges in said support means defining said opening so that said operating projection and said support means are entrained to one another to enable said operating projection to shift said support means;
- a slide member slidably mounted to said support means and defining at least a portion of an aperture limiting wall for operation of said auxiliary switch;
- first spring means including a contact compression spring and a return pressure spring disposed in said auxiliary switch for ensuring conductive engagement of contacts upon actuation of said auxiliary switch and for restoring said auxiliary switch to a neutral position upon a deactuation of said auxiliary swtich, said first spring means having a combined spring constant;
- and
- second spring means for biasing said slide member against said operating projection to hold said operating projection against said support means, said second spring means having a spring constant greater than said combined spring constant, whereby said second spring means can exert a spring force greater than a total force exerted by said first spring means.
5 more elements
Dependencies are inferred from the claim text.