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Abb Schweiz Ag

Jari Elomaa

Mikko Välivainio

Juha Soldan

Rainer Kolmonen

Timo Jokiniemi

Patrik Rabb

Marko Takala

Matti Kähkipuro

Tommi Forsberg

Pertti Arjanne

Mikko Helminen

Mikko Vehkaperä

Veikko Puumala

Lauri Kettunen

The electrical switch includes a first and a second fixed contact, and a movable knife contact including at least one longitudinal pair of blades being flexibly connected to each other, wherein the blades form, in a switching event, contact with contact portions of the first and/or the second fixed contact. Opposite surfaces of the contact portions of the first and the second fixed contact include a roughened area and the inner surface of each blade includes a protruded area or opposite surfaces of the contact portions of the first and the second fixed contact include a protruded area and the inner surface of each blade includes a roughened area.

Electrical switch

A rotary switch assembly, including a rotary contact and a stationary contact, and a rotary actuator for rotating the rotary contact such as to connect with and disconnect from the stationary contact. The rotary actuator includes a shield for shielding the rotary contact from a side that faces the stationary contact when the rotary contact and the stationary contacted are being disconnected from each other.

Electric switch assembly

A switch assembly () for switching electric circuits comprises a contributory switch (), a main switch (), and a flexible element (). The contributory switch () and the main switch () are connected electrically in series, the contributory switch () and the main switch () each comprise at least one movable contact and the flexible element is connected to one movable contact of the contributory switch, a first contact (), and one movable contact of the main switch, a second contact ().

Switch assembly

A rotary switch housing (), comprising a bottom wall () for mounting of the switch housing () to a mounting base, and side walls () extending from the bottom wall (), the switch housing further comprising an arc chamber () for extinguishing an electric arc, and a gas exhaust channel () for exhausting gas developed in the arc chamber () out of the housing (). The gas exhaust channel () comprises a guiding portion (A), which is substantially parallel to a side wall () of the housing () for leading the gases to a direction away from the bottom wall () of the housing ().

Electric switch housing

Growing community of inventors

Vaasa, Finland

Jari Elomaa