Self-adjusting contact lever
AssigneeGeneral Electric Company
InventorClaus-Peter Schulze
Life of this patent
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AssigneeGeneral Electric Company
InventorClaus-Peter Schulze
Estimating the term…
The invention pertains to a contact lever for an electrical switch designed for automatic adjustment of the main contacts. During assembly the pivot shaft is inserted in an oblong opening in the contact lever. The switch position is changed from open to closed by rotating the contact lever on the pivot shaft. The pivot shaft includes two conically extending shoulders that correspond in shape to chamfers located at the edge of the oblong opening. The conical shoulders and chamfers comprise a portion of the bearing surface between the contact lever and the pivot shaft. A sliding bearing pair is formed during switch operation wherein the contact lever is limited to a centrally aligned position in the open position and allowed additional freedom of motion at the end of the closing operation. The additional freedom of motion allows for precise automatic contact alignment.
Switch, containing a contact lever, that is arranged on a shaft and provided with a first main contact, wherein the contact lever can be pivoted relative to a second main contact, wherein the pivot shaft is accommodated in a receptacle opening of the contact lever, wherein said receptacle opening contains at least a first opening section having chamfered edges that are engaged with a pair of conically extending shoulders, and wherein the receptacle opening contains a second opening section which is arranged adjacent to the first opening section and also includes chamfered edges that carry the contact lever on the pivot shaft during a pivoting motion of the contact lever which is continued after the main contacts mutually contact one another, allowing a pivoting motion of the contact lever in a plane that extends parallel to the pivot shaft.
A switch comprising:
A switch comprising:
Dependencies are inferred from the claim text.